Merge branch 'master' into index-lifecycle

buildSrc/src/main/groovy/org/elasticsearch/gradle/BuildPlugin.groovy

@@ -131,6 +131,9 @@ class BuildPlugin implements Plugin<Project> {
                 runtimeJavaVersionEnum = JavaVersion.toVersion(findJavaSpecificationVersion(project, runtimeJavaHome))
             }
 
+            String inFipsJvmScript = 'print(java.security.Security.getProviders()[0].name.toLowerCase().contains("fips"));'
+            boolean inFipsJvm = Boolean.parseBoolean(runJavascript(project, runtimeJavaHome, inFipsJvmScript))
+
             // Build debugging info
             println '======================================='
             println 'Elasticsearch Build Hamster says Hello!'
@@ -202,6 +205,7 @@ class BuildPlugin implements Plugin<Project> {
             project.rootProject.ext.buildChecksDone = true
             project.rootProject.ext.minimumCompilerVersion = minimumCompilerVersion
             project.rootProject.ext.minimumRuntimeVersion = minimumRuntimeVersion
+            project.rootProject.ext.inFipsJvm = inFipsJvm
         }
 
         project.targetCompatibility = project.rootProject.ext.minimumRuntimeVersion
@@ -213,6 +217,7 @@ class BuildPlugin implements Plugin<Project> {
         project.ext.compilerJavaVersion = project.rootProject.ext.compilerJavaVersion
         project.ext.runtimeJavaVersion = project.rootProject.ext.runtimeJavaVersion
         project.ext.javaVersions = project.rootProject.ext.javaVersions
+        project.ext.inFipsJvm = project.rootProject.ext.inFipsJvm
     }
 
     private static String findCompilerJavaHome() {
@@ -770,7 +775,11 @@ class BuildPlugin implements Plugin<Project> {
                     systemProperty property.getKey(), property.getValue()
                 }
             }
-
+            // Set the system keystore/truststore password if we're running tests in a FIPS-140 JVM
+            if (project.inFipsJvm) {
+                systemProperty 'javax.net.ssl.trustStorePassword', 'password'
+                systemProperty 'javax.net.ssl.keyStorePassword', 'password'
+            }
             boolean assertionsEnabled = Boolean.parseBoolean(System.getProperty('tests.asserts', 'true'))
             enableSystemAssertions assertionsEnabled
             enableAssertions assertionsEnabled

client/rest-high-level/src/test/java/org/elasticsearch/client/RankEvalIT.java

@@ -80,7 +80,7 @@ public class RankEvalIT extends ESRestHighLevelClientTestCase {
         RankEvalResponse response = execute(rankEvalRequest, highLevelClient()::rankEval, highLevelClient()::rankEvalAsync);
         // the expected Prec@ for the first query is 5/7 and the expected Prec@ for the second is 1/7, divided by 2 to get the average
         double expectedPrecision = (1.0 / 7.0 + 5.0 / 7.0) / 2.0;
-        assertEquals(expectedPrecision, response.getEvaluationResult(), Double.MIN_VALUE);
+        assertEquals(expectedPrecision, response.getMetricScore(), Double.MIN_VALUE);
         Map<String, EvalQueryQuality> partialResults = response.getPartialResults();
         assertEquals(2, partialResults.size());
         EvalQueryQuality amsterdamQueryQuality = partialResults.get("amsterdam_query");

client/rest-high-level/src/test/java/org/elasticsearch/client/documentation/SearchDocumentationIT.java

@@ -1136,14 +1136,14 @@ public class SearchDocumentationIT extends ESRestHighLevelClientTestCase {
             // end::rank-eval-execute
 
             // tag::rank-eval-response
-            double evaluationResult = response.getEvaluationResult();   // <1>
+            double evaluationResult = response.getMetricScore();   // <1>
             assertEquals(1.0 / 3.0, evaluationResult, 0.0);
             Map<String, EvalQueryQuality> partialResults =
                     response.getPartialResults();
             EvalQueryQuality evalQuality =
                     partialResults.get("kimchy_query");                 // <2>
             assertEquals("kimchy_query", evalQuality.getId());
-            double qualityLevel = evalQuality.getQualityLevel();        // <3>
+            double qualityLevel = evalQuality.metricScore();        // <3>
             assertEquals(1.0 / 3.0, qualityLevel, 0.0);
             List<RatedSearchHit> hitsAndRatings = evalQuality.getHitsAndRatings();
             RatedSearchHit ratedSearchHit = hitsAndRatings.get(2);

distribution/packages/build.gradle

@@ -125,27 +125,18 @@ Closure commonPackageConfig(String type, boolean oss) {
         fileMode 0644
       }
       into('lib') {
-        with copySpec {
         with libFiles(oss)
-          // we need to specify every intermediate directory so we iterate through the parents; duplicate calls with the same part are fine
-          eachFile { FileCopyDetails fcp ->
-            String[] segments = fcp.relativePath.segments
-            for (int i = segments.length - 2; i > 0 && segments[i] != 'lib'; --i) {
-              directory('/' + segments[0..i].join('/'), 0755)
-            }
-            fcp.mode = 0644
-          }
-        }
       }
       into('modules') {
-        with copySpec {
         with modulesFiles(oss)
-          // we need to specify every intermediate directory so we iterate through the parents; duplicate calls with the same part are fine
+      }
+      // we need to specify every intermediate directory in these paths so the package managers know they are explicitly
+      // intended to manage them; otherwise they may be left behind on uninstallation. duplicate calls of the same
+      // directory are fine
       eachFile { FileCopyDetails fcp ->
         String[] segments = fcp.relativePath.segments
-            for (int i = segments.length - 2; i > 0 && segments[i] != 'modules'; --i) {
+        for (int i = segments.length - 2; i > 2; --i) {
           directory('/' + segments[0..i].join('/'), 0755)
-            }
           if (segments[-2] == 'bin') {
             fcp.mode = 0755
           } else {
@@ -154,7 +145,6 @@ Closure commonPackageConfig(String type, boolean oss) {
         }
       }
     }
-    }
 
     // license files
     if (type == 'deb') {
@@ -333,12 +323,6 @@ Closure commonRpmConfig(boolean oss) {
 
     // without this the rpm will have parent dirs of any files we copy in, eg /etc/elasticsearch
     addParentDirs false
-
-    // Declare the folders so that the RPM package manager removes
-    // them when upgrading or removing the package
-    directory('/usr/share/elasticsearch/bin', 0755)
-    directory('/usr/share/elasticsearch/lib', 0755)
-    directory('/usr/share/elasticsearch/modules', 0755)
   }
 }
 

docs/build.gradle

@@ -379,9 +379,9 @@ buildRestTests.setups['exams'] = '''
           refresh: true
           body: |
             {"index":{}}
-            {"grade": 100}
+            {"grade": 100, "weight": 2}
             {"index":{}}
-            {"grade": 50}'''
+            {"grade": 50, "weight": 3}'''
 
 buildRestTests.setups['stored_example_script'] = '''
   # Simple script to load a field. Not really a good example, but a simple one.

docs/plugins/analysis-phonetic.asciidoc

@@ -17,15 +17,15 @@ The `phonetic` token filter takes the following settings:
 `encoder`::
 
     Which phonetic encoder to use.  Accepts `metaphone` (default),
-    `doublemetaphone`, `soundex`, `refinedsoundex`, `caverphone1`,
+    `double_metaphone`, `soundex`, `refined_soundex`, `caverphone1`,
     `caverphone2`, `cologne`, `nysiis`, `koelnerphonetik`, `haasephonetik`,
-    `beidermorse`, `daitch_mokotoff`.
+    `beider_morse`, `daitch_mokotoff`.
 
 `replace`::
 
     Whether or not the original token should be replaced by the phonetic
     token. Accepts `true` (default) and `false`.  Not supported by
-    `beidermorse` encoding.
+    `beider_morse` encoding.
 
 [source,js]
 --------------------------------------------------

docs/reference/aggregations/metrics.asciidoc

@@ -13,6 +13,8 @@ bucket aggregations (some bucket aggregations enable you to sort the returned bu
 
 include::metrics/avg-aggregation.asciidoc[]
 
+include::metrics/weighted-avg-aggregation.asciidoc[]
+
 include::metrics/cardinality-aggregation.asciidoc[]
 
 include::metrics/extendedstats-aggregation.asciidoc[]

docs/reference/aggregations/metrics/weighted-avg-aggregation.asciidoc

@@ -0,0 +1,202 @@
+[[search-aggregations-metrics-weight-avg-aggregation]]
+=== Weighted Avg Aggregation
+
+A `single-value` metrics aggregation that computes the weighted average of numeric values that are extracted from the aggregated documents.
+These values can be extracted either from specific numeric fields in the documents.
+
+When calculating a regular average, each datapoint has an equal "weight" ... it contributes equally to the final value.  Weighted averages,
+on the other hand, weight each datapoint differently.  The amount that each datapoint contributes to the final value is extracted from the
+document, or provided by a script.
+
+As a formula, a weighted average is the `∑(value * weight) / ∑(weight)`
+
+A regular average can be thought of as a weighted average where every value has an implicit weight of `1`.
+
+.`weighted_avg` Parameters
+|===
+|Parameter Name |Description |Required |Default Value
+|`value` | The configuration for the field or script that provides the values |Required |
+|`weight` | The configuration for the field or script that provides the weights |Required |
+|`format` | The numeric response formatter |Optional |
+|`value_type` | A hint about the values for pure scripts or unmapped fields |Optional |
+|===
+
+The `value` and `weight` objects have per-field specific configuration:
+
+.`value` Parameters
+|===
+|Parameter Name |Description |Required |Default Value
+|`field` | The field that values should be extracted from |Required |
+|`missing` | A value to use if the field is missing entirely |Optional |
+|`script` | A script which provides the values for the document.  This is mutually exclusive with `field` |Optional
+|===
+
+.`weight` Parameters
+|===
+|Parameter Name |Description |Required |Default Value
+|`field` | The field that weights should be extracted from |Required |
+|`missing` | A weight to use if the field is missing entirely |Optional |
+|`script` | A script which provides the weights for the document.  This is mutually exclusive with `field` |Optional
+|===
+
+
+==== Examples
+
+If our documents have a `"grade"` field that holds a 0-100 numeric score, and a `"weight"` field which holds an arbitrary numeric weight,
+we can calculate the weighted average using:
+
+[source,js]
+--------------------------------------------------
+POST /exams/_search
+{
+    "size": 0,
+    "aggs" : {
+        "weighted_grade": {
+            "weighted_avg": {
+                "value": {
+                    "field": "grade"
+                },
+                "weight": {
+                    "field": "weight"
+                }
+            }
+        }
+    }
+}
+--------------------------------------------------
+// CONSOLE
+// TEST[setup:exams]
+
+Which yields a response like:
+
+[source,js]
+--------------------------------------------------
+{
+    ...
+    "aggregations": {
+        "weighted_grade": {
+            "value": 70.0
+        }
+    }
+}
+--------------------------------------------------
+// TESTRESPONSE[s/\.\.\./"took": $body.took,"timed_out": false,"_shards": $body._shards,"hits": $body.hits,/]
+
+
+While multiple values-per-field are allowed, only one weight is allowed.  If the aggregation encounters
+a document that has more than one weight (e.g. the weight field is a multi-valued field) it will throw an exception.
+If you have this situation, you will need to specify a `script` for the weight field, and use the script
+to combine the multiple values into a single value to be used.
+
+This single weight will be applied independently to each value extracted from the `value` field.
+
+This example show how a single document with multiple values will be averaged with a single weight:
+
+[source,js]
+--------------------------------------------------
+POST /exams/_doc?refresh
+{
+    "grade": [1, 2, 3],
+    "weight": 2
+}
+
+POST /exams/_search
+{
+    "size": 0,
+    "aggs" : {
+        "weighted_grade": {
+            "weighted_avg": {
+                "value": {
+                    "field": "grade"
+                },
+                "weight": {
+                    "field": "weight"
+                }
+            }
+        }
+    }
+}
+--------------------------------------------------
+// CONSOLE
+// TEST
+
+The three values (`1`, `2`, and `3`) will be included as independent values, all with the weight of `2`:
+
+[source,js]
+--------------------------------------------------
+{
+    ...
+    "aggregations": {
+        "weighted_grade": {
+            "value": 2.0
+        }
+    }
+}
+--------------------------------------------------
+// TESTRESPONSE[s/\.\.\./"took": $body.took,"timed_out": false,"_shards": $body._shards,"hits": $body.hits,/]
+
+The aggregation returns `2.0` as the result, which matches what we would expect when calculating by hand:
+`((1*2) + (2*2) + (3*2)) / (2+2+2) == 2`
+
+==== Script
+
+Both the value and the weight can be derived from a script, instead of a field.  As a simple example, the following
+will add one to the grade and weight in the document using a script:
+
+[source,js]
+--------------------------------------------------
+POST /exams/_search
+{
+    "size": 0,
+    "aggs" : {
+        "weighted_grade": {
+            "weighted_avg": {
+                "value": {
+                    "script": "doc.grade.value + 1"
+                },
+                "weight": {
+                    "script": "doc.weight.value + 1"
+                }
+            }
+        }
+    }
+}
+--------------------------------------------------
+// CONSOLE
+// TEST[setup:exams]
+
+
+==== Missing values
+
+The `missing` parameter defines how documents that are missing a value should be treated.
+The default behavior is different for `value` and `weight`:
+
+By default, if the `value` field is missing the document is ignored and the aggregation moves on to the next document.
+If the `weight` field is missing, it is assumed to have a weight of `1` (like a normal average).
+
+Both of these defaults can be overridden with the `missing` parameter:
+
+[source,js]
+--------------------------------------------------
+POST /exams/_search
+{
+    "size": 0,
+    "aggs" : {
+        "weighted_grade": {
+            "weighted_avg": {
+                "value": {
+                    "field": "grade",
+                    "missing": 2
+                },
+                "weight": {
+                    "field": "weight",
+                    "missing": 3
+                }
+            }
+        }
+    }
+}
+--------------------------------------------------
+// CONSOLE
+// TEST[setup:exams]
+

docs/reference/search/rank-eval.asciidoc

@@ -270,10 +270,10 @@ that shows potential errors of individual queries. The response has the followin
 --------------------------------
 {
     "rank_eval": {
-        "quality_level": 0.4, <1>
+        "metric_score": 0.4, <1>
         "details": {  
             "my_query_id1": { <2>
-                "quality_level": 0.6, <3>
+                "metric_score": 0.6, <3>
                 "unrated_docs": [ <4>
                     {
                         "_index": "my_index",
@@ -308,7 +308,7 @@ that shows potential errors of individual queries. The response has the followin
 
 <1> the overall evaluation quality calculated by the defined metric
 <2> the `details` section contains one entry for every query in the original `requests` section, keyed by the search request id
-<3> the `quality_level` in the `details` section shows the contribution of this query to the global quality score
+<3> the `metric_score` in the `details` section shows the contribution of this query to the global quality metric score
 <4> the `unrated_docs` section contains an `_index` and `_id` entry for each document in the search result for this
 query that didn't have a ratings value. This can be used to ask the user to supply ratings for these documents
 <5> the `hits` section shows a grouping of the search results with their supplied rating

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/matrix/stats/MatrixStatsAggregationBuilder.java

@@ -26,7 +26,7 @@ import org.elasticsearch.search.MultiValueMode;
 import org.elasticsearch.search.aggregations.AggregationBuilder;
 import org.elasticsearch.search.aggregations.AggregatorFactories;
 import org.elasticsearch.search.aggregations.AggregatorFactory;
-import org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregationBuilder;
+import org.elasticsearch.search.aggregations.support.ArrayValuesSourceAggregationBuilder;
 import org.elasticsearch.search.aggregations.support.ValueType;
 import org.elasticsearch.search.aggregations.support.ValuesSource;
 import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
@@ -38,7 +38,7 @@ import java.io.IOException;
 import java.util.Map;
 
 public class MatrixStatsAggregationBuilder
-    extends MultiValuesSourceAggregationBuilder.LeafOnly<ValuesSource.Numeric, MatrixStatsAggregationBuilder> {
+    extends ArrayValuesSourceAggregationBuilder.LeafOnly<ValuesSource.Numeric, MatrixStatsAggregationBuilder> {
     public static final String NAME = "matrix_stats";
 
     private MultiValueMode multiValueMode = MultiValueMode.AVG;

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/matrix/stats/MatrixStatsAggregator.java

@@ -30,7 +30,7 @@ import org.elasticsearch.search.aggregations.LeafBucketCollector;
 import org.elasticsearch.search.aggregations.LeafBucketCollectorBase;
 import org.elasticsearch.search.aggregations.metrics.MetricsAggregator;
 import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
-import org.elasticsearch.search.aggregations.support.MultiValuesSource.NumericMultiValuesSource;
+import org.elasticsearch.search.aggregations.support.ArrayValuesSource.NumericArrayValuesSource;
 import org.elasticsearch.search.aggregations.support.ValuesSource;
 import org.elasticsearch.search.internal.SearchContext;
 
@@ -43,7 +43,7 @@ import java.util.Map;
  **/
 final class MatrixStatsAggregator extends MetricsAggregator {
     /** Multiple ValuesSource with field names */
-    private final NumericMultiValuesSource valuesSources;
+    private final NumericArrayValuesSource valuesSources;
 
     /** array of descriptive stats, per shard, needed to compute the correlation */
     ObjectArray<RunningStats> stats;
@@ -53,7 +53,7 @@ final class MatrixStatsAggregator extends MetricsAggregator {
                                  Map<String,Object> metaData) throws IOException {
         super(name, context, parent, pipelineAggregators, metaData);
         if (valuesSources != null && !valuesSources.isEmpty()) {
-            this.valuesSources = new NumericMultiValuesSource(valuesSources, multiValueMode);
+            this.valuesSources = new NumericArrayValuesSource(valuesSources, multiValueMode);
             stats = context.bigArrays().newObjectArray(1);
         } else {
             this.valuesSources = null;

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/matrix/stats/MatrixStatsAggregatorFactory.java

@@ -23,7 +23,7 @@ import org.elasticsearch.search.aggregations.Aggregator;
 import org.elasticsearch.search.aggregations.AggregatorFactories;
 import org.elasticsearch.search.aggregations.AggregatorFactory;
 import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
-import org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregatorFactory;
+import org.elasticsearch.search.aggregations.support.ArrayValuesSourceAggregatorFactory;
 import org.elasticsearch.search.aggregations.support.ValuesSource;
 import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
 import org.elasticsearch.search.internal.SearchContext;
@@ -33,7 +33,7 @@ import java.util.List;
 import java.util.Map;
 
 final class MatrixStatsAggregatorFactory
-    extends MultiValuesSourceAggregatorFactory<ValuesSource.Numeric, MatrixStatsAggregatorFactory> {
+    extends ArrayValuesSourceAggregatorFactory<ValuesSource.Numeric, MatrixStatsAggregatorFactory> {
 
     private final MultiValueMode multiValueMode;
 

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/matrix/stats/MatrixStatsParser.java

@@ -21,14 +21,14 @@ package org.elasticsearch.search.aggregations.matrix.stats;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.search.MultiValueMode;
-import org.elasticsearch.search.aggregations.support.MultiValuesSourceParser.NumericValuesSourceParser;
+import org.elasticsearch.search.aggregations.support.ArrayValuesSourceParser.NumericValuesSourceParser;
 import org.elasticsearch.search.aggregations.support.ValueType;
 import org.elasticsearch.search.aggregations.support.ValuesSourceType;
 
 import java.io.IOException;
 import java.util.Map;
 
-import static org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregationBuilder.MULTIVALUE_MODE_FIELD;
+import static org.elasticsearch.search.aggregations.support.ArrayValuesSourceAggregationBuilder.MULTIVALUE_MODE_FIELD;
 
 public class MatrixStatsParser extends NumericValuesSourceParser {
 

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/support/ArrayValuesSource.java

@@ -28,13 +28,13 @@ import java.util.Map;
 /**
  * Class to encapsulate a set of ValuesSource objects labeled by field name
  */
-public abstract class MultiValuesSource <VS extends ValuesSource> {
+public abstract class ArrayValuesSource<VS extends ValuesSource> {
     protected MultiValueMode multiValueMode;
     protected String[] names;
     protected VS[] values;
 
-    public static class NumericMultiValuesSource extends MultiValuesSource<ValuesSource.Numeric> {
-        public NumericMultiValuesSource(Map<String, ValuesSource.Numeric> valuesSources, MultiValueMode multiValueMode) {
+    public static class NumericArrayValuesSource extends ArrayValuesSource<ValuesSource.Numeric> {
+        public NumericArrayValuesSource(Map<String, ValuesSource.Numeric> valuesSources, MultiValueMode multiValueMode) {
             super(valuesSources, multiValueMode);
             if (valuesSources != null) {
                 this.values = valuesSources.values().toArray(new ValuesSource.Numeric[0]);
@@ -51,8 +51,8 @@ public abstract class MultiValuesSource <VS extends ValuesSource> {
         }
     }
 
-    public static class BytesMultiValuesSource extends MultiValuesSource<ValuesSource.Bytes> {
-        public BytesMultiValuesSource(Map<String, ValuesSource.Bytes> valuesSources, MultiValueMode multiValueMode) {
+    public static class BytesArrayValuesSource extends ArrayValuesSource<ValuesSource.Bytes> {
+        public BytesArrayValuesSource(Map<String, ValuesSource.Bytes> valuesSources, MultiValueMode multiValueMode) {
             super(valuesSources, multiValueMode);
             this.values = valuesSources.values().toArray(new ValuesSource.Bytes[0]);
         }
@@ -62,14 +62,14 @@ public abstract class MultiValuesSource <VS extends ValuesSource> {
         }
     }
 
-    public static class GeoPointValuesSource extends MultiValuesSource<ValuesSource.GeoPoint> {
+    public static class GeoPointValuesSource extends ArrayValuesSource<ValuesSource.GeoPoint> {
         public GeoPointValuesSource(Map<String, ValuesSource.GeoPoint> valuesSources, MultiValueMode multiValueMode) {
             super(valuesSources, multiValueMode);
             this.values = valuesSources.values().toArray(new ValuesSource.GeoPoint[0]);
         }
     }
 
-    private MultiValuesSource(Map<String, ?> valuesSources, MultiValueMode multiValueMode) {
+    private ArrayValuesSource(Map<String, ?> valuesSources, MultiValueMode multiValueMode) {
         if (valuesSources != null) {
             this.names = valuesSources.keySet().toArray(new String[0]);
         }

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/support/ArrayValuesSourceAggregationBuilder.java

@@ -44,13 +44,13 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 
-public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSource, AB extends MultiValuesSourceAggregationBuilder<VS, AB>>
+public abstract class ArrayValuesSourceAggregationBuilder<VS extends ValuesSource, AB extends ArrayValuesSourceAggregationBuilder<VS, AB>>
     extends AbstractAggregationBuilder<AB> {
 
     public static final ParseField MULTIVALUE_MODE_FIELD = new ParseField("mode");
 
-    public abstract static class LeafOnly<VS extends ValuesSource, AB extends MultiValuesSourceAggregationBuilder<VS, AB>>
-            extends MultiValuesSourceAggregationBuilder<VS, AB> {
+    public abstract static class LeafOnly<VS extends ValuesSource, AB extends ArrayValuesSourceAggregationBuilder<VS, AB>>
+        extends ArrayValuesSourceAggregationBuilder<VS, AB> {
 
         protected LeafOnly(String name, ValuesSourceType valuesSourceType, ValueType targetValueType) {
             super(name, valuesSourceType, targetValueType);
@@ -94,7 +94,7 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
     private Object missing = null;
     private Map<String, Object> missingMap = Collections.emptyMap();
 
-    protected MultiValuesSourceAggregationBuilder(String name, ValuesSourceType valuesSourceType, ValueType targetValueType) {
+    protected ArrayValuesSourceAggregationBuilder(String name, ValuesSourceType valuesSourceType, ValueType targetValueType) {
         super(name);
         if (valuesSourceType == null) {
             throw new IllegalArgumentException("[valuesSourceType] must not be null: [" + name + "]");
@@ -103,7 +103,7 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
         this.targetValueType = targetValueType;
     }
 
-    protected MultiValuesSourceAggregationBuilder(MultiValuesSourceAggregationBuilder<VS, AB> clone,
+    protected ArrayValuesSourceAggregationBuilder(ArrayValuesSourceAggregationBuilder<VS, AB> clone,
                                                   Builder factoriesBuilder, Map<String, Object> metaData) {
         super(clone, factoriesBuilder, metaData);
         this.valuesSourceType = clone.valuesSourceType;
@@ -115,7 +115,7 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
         this.missing = clone.missing;
     }
 
-    protected MultiValuesSourceAggregationBuilder(StreamInput in, ValuesSourceType valuesSourceType, ValueType targetValueType)
+    protected ArrayValuesSourceAggregationBuilder(StreamInput in, ValuesSourceType valuesSourceType, ValueType targetValueType)
         throws IOException {
         super(in);
         assert false == serializeTargetValueType() : "Wrong read constructor called for subclass that provides its targetValueType";
@@ -124,7 +124,7 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
         read(in);
     }
 
-    protected MultiValuesSourceAggregationBuilder(StreamInput in, ValuesSourceType valuesSourceType) throws IOException {
+    protected ArrayValuesSourceAggregationBuilder(StreamInput in, ValuesSourceType valuesSourceType) throws IOException {
         super(in);
         assert serializeTargetValueType() : "Wrong read constructor called for subclass that serializes its targetValueType";
         this.valuesSourceType = valuesSourceType;
@@ -239,10 +239,10 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
     }
 
     @Override
-    protected final MultiValuesSourceAggregatorFactory<VS, ?> doBuild(SearchContext context, AggregatorFactory<?> parent,
+    protected final ArrayValuesSourceAggregatorFactory<VS, ?> doBuild(SearchContext context, AggregatorFactory<?> parent,
                                                                       AggregatorFactories.Builder subFactoriesBuilder) throws IOException {
         Map<String, ValuesSourceConfig<VS>> configs = resolveConfig(context);
-        MultiValuesSourceAggregatorFactory<VS, ?> factory = innerBuild(context, configs, parent, subFactoriesBuilder);
+        ArrayValuesSourceAggregatorFactory<VS, ?> factory = innerBuild(context, configs, parent, subFactoriesBuilder);
         return factory;
     }
 
@@ -255,8 +255,9 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
         return configs;
     }
 
-    protected abstract MultiValuesSourceAggregatorFactory<VS, ?> innerBuild(SearchContext context,
-            Map<String, ValuesSourceConfig<VS>> configs, AggregatorFactory<?> parent,
+    protected abstract ArrayValuesSourceAggregatorFactory<VS, ?> innerBuild(SearchContext context,
+                                                                Map<String, ValuesSourceConfig<VS>> configs,
+                                                                AggregatorFactory<?> parent,
                                                                 AggregatorFactories.Builder subFactoriesBuilder) throws IOException;
 
     public ValuesSourceConfig<VS> config(SearchContext context, String field, Script script) {
@@ -362,7 +363,7 @@ public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSourc
 
     @Override
     protected final boolean doEquals(Object obj) {
-        MultiValuesSourceAggregationBuilder<?, ?> other = (MultiValuesSourceAggregationBuilder<?, ?>) obj;
+        ArrayValuesSourceAggregationBuilder<?, ?> other = (ArrayValuesSourceAggregationBuilder<?, ?>) obj;
         if (!Objects.equals(fields, other.fields))
             return false;
         if (!Objects.equals(format, other.format))

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/support/ArrayValuesSourceAggregatorFactory.java

@@ -30,13 +30,14 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-public abstract class MultiValuesSourceAggregatorFactory<VS extends ValuesSource, AF extends MultiValuesSourceAggregatorFactory<VS, AF>>
+public abstract class ArrayValuesSourceAggregatorFactory<VS extends ValuesSource, AF extends ArrayValuesSourceAggregatorFactory<VS, AF>>
     extends AggregatorFactory<AF> {
 
     protected Map<String, ValuesSourceConfig<VS>> configs;
 
-    public MultiValuesSourceAggregatorFactory(String name, Map<String, ValuesSourceConfig<VS>> configs,
-            SearchContext context, AggregatorFactory<?> parent, AggregatorFactories.Builder subFactoriesBuilder,
+    public ArrayValuesSourceAggregatorFactory(String name, Map<String, ValuesSourceConfig<VS>> configs,
+                                              SearchContext context, AggregatorFactory<?> parent,
+                                              AggregatorFactories.Builder subFactoriesBuilder,
                                               Map<String, Object> metaData) throws IOException {
         super(name, context, parent, subFactoriesBuilder, metaData);
         this.configs = configs;
@@ -63,6 +64,7 @@ public abstract class MultiValuesSourceAggregatorFactory<VS extends ValuesSource
                                                  Map<String, Object> metaData) throws IOException;
 
     protected abstract Aggregator doCreateInternal(Map<String, VS> valuesSources, Aggregator parent, boolean collectsFromSingleBucket,
-        List<PipelineAggregator> pipelineAggregators, Map<String, Object> metaData) throws IOException;
+                                                   List<PipelineAggregator> pipelineAggregators,
+                                                   Map<String, Object> metaData) throws IOException;
 
 }

modules/aggs-matrix-stats/src/main/java/org/elasticsearch/search/aggregations/support/ArrayValuesSourceParser.java

@@ -33,30 +33,30 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-public abstract class MultiValuesSourceParser<VS extends ValuesSource> implements Aggregator.Parser {
+public abstract class ArrayValuesSourceParser<VS extends ValuesSource> implements Aggregator.Parser {
 
-    public abstract static class AnyValuesSourceParser extends MultiValuesSourceParser<ValuesSource> {
+    public abstract static class AnyValuesSourceParser extends ArrayValuesSourceParser<ValuesSource> {
 
         protected AnyValuesSourceParser(boolean formattable) {
             super(formattable, ValuesSourceType.ANY, null);
         }
     }
 
-    public abstract static class NumericValuesSourceParser extends MultiValuesSourceParser<ValuesSource.Numeric> {
+    public abstract static class NumericValuesSourceParser extends ArrayValuesSourceParser<ValuesSource.Numeric> {
 
         protected NumericValuesSourceParser(boolean formattable) {
             super(formattable, ValuesSourceType.NUMERIC, ValueType.NUMERIC);
         }
     }
 
-    public abstract static class BytesValuesSourceParser extends MultiValuesSourceParser<ValuesSource.Bytes> {
+    public abstract static class BytesValuesSourceParser extends ArrayValuesSourceParser<ValuesSource.Bytes> {
 
         protected BytesValuesSourceParser(boolean formattable) {
             super(formattable, ValuesSourceType.BYTES, ValueType.STRING);
         }
     }
 
-    public abstract static class GeoPointValuesSourceParser extends MultiValuesSourceParser<ValuesSource.GeoPoint> {
+    public abstract static class GeoPointValuesSourceParser extends ArrayValuesSourceParser<ValuesSource.GeoPoint> {
 
         protected GeoPointValuesSourceParser(boolean formattable) {
             super(formattable, ValuesSourceType.GEOPOINT, ValueType.GEOPOINT);
@@ -67,14 +67,14 @@ public abstract class MultiValuesSourceParser<VS extends ValuesSource> implement
     private ValuesSourceType valuesSourceType = null;
     private ValueType targetValueType = null;
 
-    private MultiValuesSourceParser(boolean formattable, ValuesSourceType valuesSourceType, ValueType targetValueType) {
+    private ArrayValuesSourceParser(boolean formattable, ValuesSourceType valuesSourceType, ValueType targetValueType) {
         this.valuesSourceType = valuesSourceType;
         this.targetValueType = targetValueType;
         this.formattable = formattable;
     }
 
     @Override
-    public final MultiValuesSourceAggregationBuilder<VS, ?> parse(String aggregationName, XContentParser parser)
+    public final ArrayValuesSourceAggregationBuilder<VS, ?> parse(String aggregationName, XContentParser parser)
         throws IOException {
 
         List<String> fields = null;
@@ -140,7 +140,7 @@ public abstract class MultiValuesSourceParser<VS extends ValuesSource> implement
             }
         }
 
-        MultiValuesSourceAggregationBuilder<VS, ?> factory = createFactory(aggregationName, this.valuesSourceType, this.targetValueType,
+        ArrayValuesSourceAggregationBuilder<VS, ?> factory = createFactory(aggregationName, this.valuesSourceType, this.targetValueType,
             otherOptions);
         if (fields != null) {
             factory.fields(fields);
@@ -182,7 +182,7 @@ public abstract class MultiValuesSourceParser<VS extends ValuesSource> implement
     /**
      * Creates a {@link ValuesSourceAggregationBuilder} from the information
      * gathered by the subclass. Options parsed in
-     * {@link MultiValuesSourceParser} itself will be added to the factory
+     * {@link ArrayValuesSourceParser} itself will be added to the factory
      * after it has been returned by this method.
      *
      * @param aggregationName
@@ -197,11 +197,13 @@ public abstract class MultiValuesSourceParser<VS extends ValuesSource> implement
      *            method
      * @return the created factory
      */
-    protected abstract MultiValuesSourceAggregationBuilder<VS, ?> createFactory(String aggregationName, ValuesSourceType valuesSourceType,
-        ValueType targetValueType, Map<ParseField, Object> otherOptions);
+    protected abstract ArrayValuesSourceAggregationBuilder<VS, ?> createFactory(String aggregationName,
+                                                                                ValuesSourceType valuesSourceType,
+                                                                                ValueType targetValueType,
+                                                                                Map<ParseField, Object> otherOptions);
 
     /**
-     * Allows subclasses of {@link MultiValuesSourceParser} to parse extra
+     * Allows subclasses of {@link ArrayValuesSourceParser} to parse extra
      * parameters and store them in a {@link Map} which will later be passed to
      * {@link #createFactory(String, ValuesSourceType, ValueType, Map)}.
      *

modules/lang-painless/src/main/java/org/elasticsearch/painless/lookup/PainlessLookupBuilder.java

@@ -24,10 +24,12 @@ import org.elasticsearch.painless.spi.WhitelistClass;
 import org.elasticsearch.painless.spi.WhitelistConstructor;
 import org.elasticsearch.painless.spi.WhitelistField;
 import org.elasticsearch.painless.spi.WhitelistMethod;
-import org.objectweb.asm.Type;
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -38,8 +40,13 @@ import java.util.Objects;
 import java.util.Stack;
 import java.util.regex.Pattern;
 
-import static org.elasticsearch.painless.lookup.PainlessLookupUtility.DEF_TYPE_NAME;
+import static org.elasticsearch.painless.lookup.PainlessLookupUtility.CONSTRUCTOR_NAME;
+import static org.elasticsearch.painless.lookup.PainlessLookupUtility.DEF_CLASS_NAME;
+import static org.elasticsearch.painless.lookup.PainlessLookupUtility.buildPainlessFieldKey;
 import static org.elasticsearch.painless.lookup.PainlessLookupUtility.buildPainlessMethodKey;
+import static org.elasticsearch.painless.lookup.PainlessLookupUtility.typeToCanonicalTypeName;
+import static org.elasticsearch.painless.lookup.PainlessLookupUtility.typeToJavaType;
+import static org.elasticsearch.painless.lookup.PainlessLookupUtility.typesToCanonicalTypeNames;
 
 public class PainlessLookupBuilder {
 
@@ -123,17 +130,17 @@ public class PainlessLookupBuilder {
     private final List<Whitelist> whitelists;
 
     private final Map<String, Class<?>> canonicalClassNamesToClasses;
-    private final Map<Class<?>, PainlessClassBuilder> classesToPainlessClasses;
+    private final Map<Class<?>, PainlessClassBuilder> classesToPainlessClassBuilders;
 
     public PainlessLookupBuilder(List<Whitelist> whitelists) {
         this.whitelists = whitelists;
 
         canonicalClassNamesToClasses = new HashMap<>();
-        classesToPainlessClasses = new HashMap<>();
+        classesToPainlessClassBuilders = new HashMap<>();
 
-        canonicalClassNamesToClasses.put(DEF_TYPE_NAME, def.class);
-        classesToPainlessClasses.put(def.class,
-                new PainlessClassBuilder(DEF_TYPE_NAME, Object.class, Type.getType(Object.class)));
+        canonicalClassNamesToClasses.put(DEF_CLASS_NAME, def.class);
+        classesToPainlessClassBuilders.put(def.class,
+                new PainlessClassBuilder(DEF_CLASS_NAME, Object.class, org.objectweb.asm.Type.getType(Object.class)));
     }
 
     private Class<?> canonicalTypeNameToType(String canonicalTypeName) {
@@ -141,7 +148,7 @@ public class PainlessLookupBuilder {
     }
 
     private void validateType(Class<?> type) {
-        PainlessLookupUtility.validateType(type, classesToPainlessClasses.keySet());
+        PainlessLookupUtility.validateType(type, classesToPainlessClassBuilders.keySet());
     }
 
     public void addPainlessClass(ClassLoader classLoader, String javaClassName, boolean importClassName) {
@@ -174,10 +181,10 @@ public class PainlessLookupBuilder {
         Objects.requireNonNull(clazz);
 
         if (clazz == def.class) {
-            throw new IllegalArgumentException("cannot add reserved class [" + DEF_TYPE_NAME + "]");
+            throw new IllegalArgumentException("cannot add reserved class [" + DEF_CLASS_NAME + "]");
         }
 
-        String canonicalClassName = clazz.getCanonicalName();
+        String canonicalClassName = typeToCanonicalTypeName(clazz);
 
         if (clazz.isArray()) {
             throw new IllegalArgumentException("cannot add array type [" + canonicalClassName + "] as a class");
@@ -187,13 +194,14 @@ public class PainlessLookupBuilder {
             throw new IllegalArgumentException("invalid class name [" + canonicalClassName + "]");
         }
 
-        PainlessClassBuilder existingPainlessClassBuilder = classesToPainlessClasses.get(clazz);
+        PainlessClassBuilder existingPainlessClassBuilder = classesToPainlessClassBuilders.get(clazz);
 
         if (existingPainlessClassBuilder == null) {
-            PainlessClassBuilder painlessClassBuilder = new PainlessClassBuilder(canonicalClassName, clazz, Type.getType(clazz));
+            PainlessClassBuilder painlessClassBuilder =
+                    new PainlessClassBuilder(canonicalClassName, clazz, org.objectweb.asm.Type.getType(clazz));
 
             canonicalClassNamesToClasses.put(canonicalClassName, clazz);
-            classesToPainlessClasses.put(clazz, painlessClassBuilder);
+            classesToPainlessClassBuilders.put(clazz, painlessClassBuilder);
         } else if (existingPainlessClassBuilder.clazz.equals(clazz) == false) {
             throw new IllegalArgumentException("class [" + canonicalClassName + "] " +
                     "cannot represent multiple java classes with the same name from different class loaders");
@@ -207,308 +215,459 @@ public class PainlessLookupBuilder {
                 throw new IllegalArgumentException("must use only_fqn parameter on class [" + canonicalClassName + "] with no package");
             }
         } else {
-            Class<?> importedPainlessType = canonicalClassNamesToClasses.get(importedCanonicalClassName);
+            Class<?> importedPainlessClass = canonicalClassNamesToClasses.get(importedCanonicalClassName);
 
-            if (importedPainlessType == null) {
+            if (importedPainlessClass == null) {
                 if (importClassName) {
                     if (existingPainlessClassBuilder != null) {
-                        throw new IllegalArgumentException(
-                                "inconsistent only_fqn parameters found for painless type [" + canonicalClassName + "]");
+                        throw new IllegalArgumentException("inconsistent only_fqn parameters found for class [" + canonicalClassName + "]");
                     }
 
                     canonicalClassNamesToClasses.put(importedCanonicalClassName, clazz);
                 }
-            } else if (importedPainlessType.equals(clazz) == false) {
-                throw new IllegalArgumentException("painless type [" + importedCanonicalClassName + "] illegally represents multiple " +
-                        "java types [" + clazz.getCanonicalName() + "] and [" + importedPainlessType.getCanonicalName() + "]");
+            } else if (importedPainlessClass.equals(clazz) == false) {
+                throw new IllegalArgumentException("imported class [" + importedCanonicalClassName + "] cannot represent multiple " +
+                        "classes [" + canonicalClassName + "] and [" + typeToCanonicalTypeName(importedPainlessClass) + "]");
             } else if (importClassName == false) {
-                throw new IllegalArgumentException("inconsistent only_fqn parameters found for painless type [" + canonicalClassName + "]");
+                throw new IllegalArgumentException("inconsistent only_fqn parameters found for class [" + canonicalClassName + "]");
             }
         }
     }
 
-    private void addConstructor(String ownerStructName, WhitelistConstructor whitelistConstructor) {
-        PainlessClassBuilder ownerStruct = classesToPainlessClasses.get(canonicalClassNamesToClasses.get(ownerStructName));
+    public void addPainlessConstructor(String targetCanonicalClassName, List<String> typeNameParameters) {
+        Objects.requireNonNull(targetCanonicalClassName);
+        Objects.requireNonNull(typeNameParameters);
 
-        if (ownerStruct == null) {
-            throw new IllegalArgumentException("owner struct [" + ownerStructName + "] not defined for constructor with " +
-                "parameters " + whitelistConstructor.painlessParameterTypeNames);
+        Class<?> targetClass = canonicalClassNamesToClasses.get(targetCanonicalClassName);
+
+        if (targetClass == null) {
+            throw new IllegalArgumentException("target class [" + targetCanonicalClassName + "] not found" +
+                    "for constructor [[" + targetCanonicalClassName + "], " + typeNameParameters  + "]");
         }
 
-        List<Class<?>> painlessParametersTypes = new ArrayList<>(whitelistConstructor.painlessParameterTypeNames.size());
-        Class<?>[] javaClassParameters = new Class<?>[whitelistConstructor.painlessParameterTypeNames.size()];
-
-        for (int parameterCount = 0; parameterCount < whitelistConstructor.painlessParameterTypeNames.size(); ++parameterCount) {
-            String painlessParameterTypeName = whitelistConstructor.painlessParameterTypeNames.get(parameterCount);
+        List<Class<?>> typeParameters = new ArrayList<>(typeNameParameters.size());
 
+        for (String typeNameParameter : typeNameParameters) {
             try {
-                Class<?> painlessParameterClass = canonicalTypeNameToType(painlessParameterTypeName);
-
-                painlessParametersTypes.add(painlessParameterClass);
-                javaClassParameters[parameterCount] = PainlessLookupUtility.typeToJavaType(painlessParameterClass);
+                Class<?> typeParameter = canonicalTypeNameToType(typeNameParameter);
+                typeParameters.add(typeParameter);
             } catch (IllegalArgumentException iae) {
-                throw new IllegalArgumentException("struct not defined for constructor parameter [" + painlessParameterTypeName + "] " +
-                    "with owner struct [" + ownerStructName + "] and constructor parameters " +
-                    whitelistConstructor.painlessParameterTypeNames, iae);
+                throw new IllegalArgumentException("type parameter [" + typeNameParameter + "] not found " +
+                        "for constructor [[" + targetCanonicalClassName + "], " + typeNameParameters  + "]", iae);
             }
         }
 
-        java.lang.reflect.Constructor<?> javaConstructor;
+        addPainlessConstructor(targetClass, typeParameters);
+    }
+
+    public void addPainlessConstructor(Class<?> targetClass, List<Class<?>> typeParameters) {
+        Objects.requireNonNull(targetClass);
+        Objects.requireNonNull(typeParameters);
+
+        if (targetClass == def.class) {
+            throw new IllegalArgumentException("cannot add constructor to reserved class [" + DEF_CLASS_NAME + "]");
+        }
+
+        String targetCanonicalClassName = targetClass.getCanonicalName();
+        PainlessClassBuilder painlessClassBuilder = classesToPainlessClassBuilders.get(targetClass);
+
+        if (painlessClassBuilder == null) {
+            throw new IllegalArgumentException("target class [" + targetCanonicalClassName + "] not found" +
+                    "for constructor [[" + targetCanonicalClassName + "], " + typesToCanonicalTypeNames(typeParameters)  + "]");
+        }
+
+        int typeParametersSize = typeParameters.size();
+        List<Class<?>> javaTypeParameters = new ArrayList<>(typeParametersSize);
+
+        for (Class<?> typeParameter : typeParameters) {
+            try {
+                validateType(typeParameter);
+            } catch (IllegalArgumentException iae) {
+                throw new IllegalArgumentException("type parameter [" + typeToCanonicalTypeName(typeParameter) + "] not found " +
+                        "for constructor [[" + targetCanonicalClassName + "], " + typesToCanonicalTypeNames(typeParameters) + "]", iae);
+            }
+
+            javaTypeParameters.add(typeToJavaType(typeParameter));
+        }
+
+        Constructor<?> javaConstructor;
 
         try {
-            javaConstructor = ownerStruct.clazz.getConstructor(javaClassParameters);
-        } catch (NoSuchMethodException exception) {
-            throw new IllegalArgumentException("constructor not defined for owner struct [" + ownerStructName + "] " +
-                " with constructor parameters " + whitelistConstructor.painlessParameterTypeNames, exception);
+            javaConstructor = targetClass.getConstructor(javaTypeParameters.toArray(new Class<?>[typeParametersSize]));
+        } catch (NoSuchMethodException nsme) {
+            throw new IllegalArgumentException("constructor reflection object " +
+                    "[[" + targetCanonicalClassName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found", nsme);
         }
 
-        String painlessMethodKey = buildPainlessMethodKey("<init>", whitelistConstructor.painlessParameterTypeNames.size());
-        PainlessMethod painlessConstructor = ownerStruct.constructors.get(painlessMethodKey);
+        String painlessMethodKey = buildPainlessMethodKey(CONSTRUCTOR_NAME, typeParametersSize);
+        PainlessMethod painlessConstructor = painlessClassBuilder.constructors.get(painlessMethodKey);
 
         if (painlessConstructor == null) {
             org.objectweb.asm.commons.Method asmConstructor = org.objectweb.asm.commons.Method.getMethod(javaConstructor);
-            MethodHandle javaHandle;
+            MethodHandle methodHandle;
 
             try {
-                javaHandle = MethodHandles.publicLookup().in(ownerStruct.clazz).unreflectConstructor(javaConstructor);
-            } catch (IllegalAccessException exception) {
-                throw new IllegalArgumentException("constructor not defined for owner struct [" + ownerStructName + "] " +
-                    " with constructor parameters " + whitelistConstructor.painlessParameterTypeNames);
+                methodHandle = MethodHandles.publicLookup().in(targetClass).unreflectConstructor(javaConstructor);
+            } catch (IllegalAccessException iae) {
+                throw new IllegalArgumentException("constructor method handle " +
+                        "[[" + targetCanonicalClassName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found", iae);
             }
 
             painlessConstructor = painlessMethodCache.computeIfAbsent(
-                new PainlessMethodCacheKey(ownerStruct.clazz, "<init>", painlessParametersTypes),
-                key -> new PainlessMethod("<init>", ownerStruct.clazz, null, void.class, painlessParametersTypes,
-                    asmConstructor, javaConstructor.getModifiers(), javaHandle));
-            ownerStruct.constructors.put(painlessMethodKey, painlessConstructor);
-        } else if (painlessConstructor.arguments.equals(painlessParametersTypes) == false){
-            throw new IllegalArgumentException(
-                "illegal duplicate constructors [" + painlessMethodKey + "] found within the struct [" + ownerStruct.name + "] " +
-                    "with parameters " + painlessParametersTypes + " and " + painlessConstructor.arguments);
+                    new PainlessMethodCacheKey(targetClass, CONSTRUCTOR_NAME, typeParameters),
+                    key -> new PainlessMethod(CONSTRUCTOR_NAME, targetClass, null, void.class, typeParameters,
+                                              asmConstructor, javaConstructor.getModifiers(), methodHandle)
+            );
+
+            painlessClassBuilder.constructors.put(painlessMethodKey, painlessConstructor);
+        } else if (painlessConstructor.arguments.equals(typeParameters) == false){
+            throw new IllegalArgumentException("cannot have constructors " +
+                    "[[" + targetCanonicalClassName + "], " + typesToCanonicalTypeNames(typeParameters) + "] and " +
+                    "[[" + targetCanonicalClassName + "], " + typesToCanonicalTypeNames(painlessConstructor.arguments) + "] " +
+                    "with the same arity and different type parameters");
         }
     }
 
-    private void addMethod(ClassLoader whitelistClassLoader, String ownerStructName, WhitelistMethod whitelistMethod) {
-        PainlessClassBuilder ownerStruct = classesToPainlessClasses.get(canonicalClassNamesToClasses.get(ownerStructName));
+    public void addPainlessMethod(ClassLoader classLoader, String targetCanonicalClassName, String augmentedCanonicalClassName,
+            String methodName, String returnCanonicalTypeName, List<String> typeNameParameters) {
 
-        if (ownerStruct == null) {
-            throw new IllegalArgumentException("owner struct [" + ownerStructName + "] not defined for method with " +
-                "name [" + whitelistMethod.javaMethodName + "] and parameters " + whitelistMethod.painlessParameterTypeNames);
+        Objects.requireNonNull(classLoader);
+        Objects.requireNonNull(targetCanonicalClassName);
+        Objects.requireNonNull(methodName);
+        Objects.requireNonNull(returnCanonicalTypeName);
+        Objects.requireNonNull(typeNameParameters);
+
+        Class<?> targetClass = canonicalClassNamesToClasses.get(targetCanonicalClassName);
+
+        if (targetClass == null) {
+            throw new IllegalArgumentException("target class [" + targetCanonicalClassName + "] not found for method " +
+                    "[[" + targetCanonicalClassName + "], [" + methodName + "], " + typeNameParameters + "]");
         }
 
-        if (METHOD_NAME_PATTERN.matcher(whitelistMethod.javaMethodName).matches() == false) {
-            throw new IllegalArgumentException("invalid method name" +
-                " [" + whitelistMethod.javaMethodName + "] for owner struct [" + ownerStructName + "].");
-        }
+        Class<?> augmentedClass = null;
 
-        Class<?> javaAugmentedClass;
-
-        if (whitelistMethod.javaAugmentedClassName != null) {
+        if (augmentedCanonicalClassName != null) {
             try {
-                javaAugmentedClass = Class.forName(whitelistMethod.javaAugmentedClassName, true, whitelistClassLoader);
+                augmentedClass = Class.forName(augmentedCanonicalClassName, true, classLoader);
             } catch (ClassNotFoundException cnfe) {
-                throw new IllegalArgumentException("augmented class [" + whitelistMethod.javaAugmentedClassName + "] " +
-                    "not found for method with name [" + whitelistMethod.javaMethodName + "] " +
-                    "and parameters " + whitelistMethod.painlessParameterTypeNames, cnfe);
+                throw new IllegalArgumentException("augmented class [" + augmentedCanonicalClassName + "] not found for method " +
+                        "[[" + targetCanonicalClassName + "], [" + methodName + "], " + typeNameParameters + "]", cnfe);
             }
-        } else {
-            javaAugmentedClass = null;
         }
 
-        int augmentedOffset = javaAugmentedClass == null ? 0 : 1;
-
-        List<Class<?>> painlessParametersTypes = new ArrayList<>(whitelistMethod.painlessParameterTypeNames.size());
-        Class<?>[] javaClassParameters = new Class<?>[whitelistMethod.painlessParameterTypeNames.size() + augmentedOffset];
-
-        if (javaAugmentedClass != null) {
-            javaClassParameters[0] = ownerStruct.clazz;
-        }
-
-        for (int parameterCount = 0; parameterCount < whitelistMethod.painlessParameterTypeNames.size(); ++parameterCount) {
-            String painlessParameterTypeName = whitelistMethod.painlessParameterTypeNames.get(parameterCount);
+        List<Class<?>> typeParameters = new ArrayList<>(typeNameParameters.size());
 
+        for (String typeNameParameter : typeNameParameters) {
             try {
-                Class<?> painlessParameterClass = canonicalTypeNameToType(painlessParameterTypeName);
-
-                painlessParametersTypes.add(painlessParameterClass);
-                javaClassParameters[parameterCount + augmentedOffset] =
-                        PainlessLookupUtility.typeToJavaType(painlessParameterClass);
+                Class<?> typeParameter = canonicalTypeNameToType(typeNameParameter);
+                typeParameters.add(typeParameter);
             } catch (IllegalArgumentException iae) {
-                throw new IllegalArgumentException("struct not defined for method parameter [" + painlessParameterTypeName + "] " +
-                    "with owner struct [" + ownerStructName + "] and method with name [" + whitelistMethod.javaMethodName + "] " +
-                    "and parameters " + whitelistMethod.painlessParameterTypeNames, iae);
+                throw new IllegalArgumentException("parameter type [" + typeNameParameter + "] not found for method " +
+                        "[[" + targetCanonicalClassName + "], [" + methodName + "], " + typeNameParameters + "]", iae);
             }
         }
 
-        Class<?> javaImplClass = javaAugmentedClass == null ? ownerStruct.clazz : javaAugmentedClass;
-        java.lang.reflect.Method javaMethod;
+        Class<?> returnType;
 
         try {
-            javaMethod = javaImplClass.getMethod(whitelistMethod.javaMethodName, javaClassParameters);
+            returnType = canonicalTypeNameToType(returnCanonicalTypeName);
+        } catch (IllegalArgumentException iae) {
+            throw new IllegalArgumentException("parameter type [" + returnCanonicalTypeName + "] not found for method " +
+                    "[[" + targetCanonicalClassName + "], [" + methodName + "], " + typeNameParameters + "]", iae);
+        }
+
+        addPainlessMethod(targetClass, augmentedClass, methodName, returnType, typeParameters);
+    }
+
+    public void addPainlessMethod(Class<?> targetClass, Class<?> augmentedClass, String methodName,
+            Class<?> returnType, List<Class<?>> typeParameters) {
+        Objects.requireNonNull(targetClass);
+        Objects.requireNonNull(methodName);
+        Objects.requireNonNull(returnType);
+        Objects.requireNonNull(typeParameters);
+
+        if (targetClass == def.class) {
+            throw new IllegalArgumentException("cannot add method to reserved class [" + DEF_CLASS_NAME + "]");
+        }
+
+        String targetCanonicalClassName = typeToCanonicalTypeName(targetClass);
+
+        if (METHOD_NAME_PATTERN.matcher(methodName).matches() == false) {
+            throw new IllegalArgumentException(
+                    "invalid method name [" + methodName + "] for target class [" + targetCanonicalClassName + "].");
+        }
+
+        PainlessClassBuilder painlessClassBuilder = classesToPainlessClassBuilders.get(targetClass);
+
+        if (painlessClassBuilder == null) {
+            throw new IllegalArgumentException("target class [" + targetCanonicalClassName + "] not found for method " +
+                    "[[" + targetCanonicalClassName + "], [" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "]");
+        }
+
+        int typeParametersSize = typeParameters.size();
+        int augmentedParameterOffset = augmentedClass == null ? 0 : 1;
+        List<Class<?>> javaTypeParameters = new ArrayList<>(typeParametersSize + augmentedParameterOffset);
+
+        if (augmentedClass != null) {
+            javaTypeParameters.add(targetClass);
+        }
+
+        for (Class<?> typeParameter : typeParameters) {
+            try {
+                validateType(typeParameter);
+            } catch (IllegalArgumentException iae) {
+                throw new IllegalArgumentException("type parameter [" + typeToCanonicalTypeName(typeParameter) + "] " +
+                        "not found for method [[" + targetCanonicalClassName + "], [" + methodName + "], " +
+                        typesToCanonicalTypeNames(typeParameters) + "]", iae);
+            }
+
+            javaTypeParameters.add(typeToJavaType(typeParameter));
+        }
+
+        try {
+            validateType(returnType);
+        } catch (IllegalArgumentException iae) {
+            throw new IllegalArgumentException("return type [" + typeToCanonicalTypeName(returnType) + "] not found for method " +
+                    "[[" + targetCanonicalClassName + "], [" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "]", iae);
+        }
+
+        Method javaMethod;
+
+        if (augmentedClass == null) {
+            try {
+                javaMethod = targetClass.getMethod(methodName, javaTypeParameters.toArray(new Class<?>[typeParametersSize]));
             } catch (NoSuchMethodException nsme) {
-            throw new IllegalArgumentException("method with name [" + whitelistMethod.javaMethodName + "] " +
-                "and parameters " + whitelistMethod.painlessParameterTypeNames + " not found for class [" +
-                javaImplClass.getName() + "]", nsme);
-        }
-
-        Class<?> painlessReturnClass;
-
-        try {
-            painlessReturnClass = canonicalTypeNameToType(whitelistMethod.painlessReturnTypeName);
-        } catch (IllegalArgumentException iae) {
-            throw new IllegalArgumentException("struct not defined for return type [" + whitelistMethod.painlessReturnTypeName + "] " +
-                "with owner struct [" + ownerStructName + "] and method with name [" + whitelistMethod.javaMethodName + "] " +
-                "and parameters " + whitelistMethod.painlessParameterTypeNames, iae);
-        }
-
-        if (javaMethod.getReturnType() != PainlessLookupUtility.typeToJavaType(painlessReturnClass)) {
-            throw new IllegalArgumentException("specified return type class [" + painlessReturnClass + "] " +
-                "does not match the return type class [" + javaMethod.getReturnType() + "] for the " +
-                "method with name [" + whitelistMethod.javaMethodName + "] " +
-                "and parameters " + whitelistMethod.painlessParameterTypeNames);
-        }
-
-        String painlessMethodKey =
-            buildPainlessMethodKey(whitelistMethod.javaMethodName, whitelistMethod.painlessParameterTypeNames.size());
-
-        if (javaAugmentedClass == null && Modifier.isStatic(javaMethod.getModifiers())) {
-            PainlessMethod painlessMethod = ownerStruct.staticMethods.get(painlessMethodKey);
-
-            if (painlessMethod == null) {
-                org.objectweb.asm.commons.Method asmMethod = org.objectweb.asm.commons.Method.getMethod(javaMethod);
-                MethodHandle javaMethodHandle;
-
-                try {
-                    javaMethodHandle = MethodHandles.publicLookup().in(javaImplClass).unreflect(javaMethod);
-                } catch (IllegalAccessException exception) {
-                    throw new IllegalArgumentException("method handle not found for method with name " +
-                        "[" + whitelistMethod.javaMethodName + "] and parameters " + whitelistMethod.painlessParameterTypeNames);
-                }
-
-                painlessMethod = painlessMethodCache.computeIfAbsent(
-                    new PainlessMethodCacheKey(ownerStruct.clazz, whitelistMethod.javaMethodName, painlessParametersTypes),
-                    key -> new PainlessMethod(whitelistMethod.javaMethodName, ownerStruct.clazz, null, painlessReturnClass,
-                        painlessParametersTypes, asmMethod, javaMethod.getModifiers(), javaMethodHandle));
-                ownerStruct.staticMethods.put(painlessMethodKey, painlessMethod);
-            } else if ((painlessMethod.name.equals(whitelistMethod.javaMethodName) && painlessMethod.rtn == painlessReturnClass &&
-                painlessMethod.arguments.equals(painlessParametersTypes)) == false) {
-                throw new IllegalArgumentException("illegal duplicate static methods [" + painlessMethodKey + "] " +
-                    "found within the struct [" + ownerStruct.name + "] with name [" + whitelistMethod.javaMethodName + "], " +
-                    "return types [" + painlessReturnClass + "] and [" + painlessMethod.rtn + "], " +
-                    "and parameters " + painlessParametersTypes + " and " + painlessMethod.arguments);
+                throw new IllegalArgumentException("method reflection object [[" + targetCanonicalClassName + "], " +
+                        "[" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found", nsme);
             }
         } else {
-            PainlessMethod painlessMethod = ownerStruct.methods.get(painlessMethodKey);
+            try {
+                javaMethod = augmentedClass.getMethod(methodName, javaTypeParameters.toArray(new Class<?>[typeParametersSize]));
+            } catch (NoSuchMethodException nsme) {
+                throw new IllegalArgumentException("method reflection object [[" + targetCanonicalClassName + "], " +
+                        "[" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found " +
+                        "with augmented target class [" + typeToCanonicalTypeName(augmentedClass) + "]", nsme);
+            }
+        }
+
+        if (javaMethod.getReturnType() != typeToJavaType(returnType)) {
+            throw new IllegalArgumentException("return type [" + typeToCanonicalTypeName(javaMethod.getReturnType()) + "] " +
+                    "does not match the specified returned type [" + typeToCanonicalTypeName(returnType) + "] " +
+                    "for method [[" + targetClass.getCanonicalName() + "], [" + methodName + "], " +
+                    typesToCanonicalTypeNames(typeParameters) + "]");
+        }
+
+        String painlessMethodKey = buildPainlessMethodKey(methodName, typeParametersSize);
+
+        if (augmentedClass == null && Modifier.isStatic(javaMethod.getModifiers())) {
+            PainlessMethod painlessMethod = painlessClassBuilder.staticMethods.get(painlessMethodKey);
 
             if (painlessMethod == null) {
                 org.objectweb.asm.commons.Method asmMethod = org.objectweb.asm.commons.Method.getMethod(javaMethod);
                 MethodHandle javaMethodHandle;
 
                 try {
-                    javaMethodHandle = MethodHandles.publicLookup().in(javaImplClass).unreflect(javaMethod);
-                } catch (IllegalAccessException exception) {
-                    throw new IllegalArgumentException("method handle not found for method with name " +
-                        "[" + whitelistMethod.javaMethodName + "] and parameters " + whitelistMethod.painlessParameterTypeNames);
+                    javaMethodHandle = MethodHandles.publicLookup().in(targetClass).unreflect(javaMethod);
+                } catch (IllegalAccessException iae) {
+                    throw new IllegalArgumentException("static method handle [[" + targetClass.getCanonicalName() + "], " +
+                            "[" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found", iae);
                 }
 
                 painlessMethod = painlessMethodCache.computeIfAbsent(
-                    new PainlessMethodCacheKey(ownerStruct.clazz, whitelistMethod.javaMethodName, painlessParametersTypes),
-                    key -> new PainlessMethod(whitelistMethod.javaMethodName, ownerStruct.clazz, javaAugmentedClass, painlessReturnClass,
-                        painlessParametersTypes, asmMethod, javaMethod.getModifiers(), javaMethodHandle));
-                ownerStruct.methods.put(painlessMethodKey, painlessMethod);
-            } else if ((painlessMethod.name.equals(whitelistMethod.javaMethodName) && painlessMethod.rtn.equals(painlessReturnClass) &&
-                painlessMethod.arguments.equals(painlessParametersTypes)) == false) {
-                throw new IllegalArgumentException("illegal duplicate member methods [" + painlessMethodKey + "] " +
-                    "found within the struct [" + ownerStruct.name + "] with name [" + whitelistMethod.javaMethodName + "], " +
-                    "return types [" + painlessReturnClass + "] and [" + painlessMethod.rtn + "], " +
-                    "and parameters " + painlessParametersTypes + " and " + painlessMethod.arguments);
+                        new PainlessMethodCacheKey(targetClass, methodName, typeParameters),
+                        key -> new PainlessMethod(methodName, targetClass, null, returnType,
+                                typeParameters, asmMethod, javaMethod.getModifiers(), javaMethodHandle));
+
+                painlessClassBuilder.staticMethods.put(painlessMethodKey, painlessMethod);
+            } else if ((painlessMethod.name.equals(methodName) && painlessMethod.rtn == returnType &&
+                    painlessMethod.arguments.equals(typeParameters)) == false) {
+                throw new IllegalArgumentException("cannot have static methods " +
+                        "[[" + targetCanonicalClassName + "], [" + methodName + "], " +
+                        "[" + typeToCanonicalTypeName(returnType) + "], " +
+                        typesToCanonicalTypeNames(typeParameters) + "] and " +
+                        "[[" + targetCanonicalClassName + "], [" + methodName + "], " +
+                        "[" + typeToCanonicalTypeName(painlessMethod.rtn) + "], " +
+                        typesToCanonicalTypeNames(painlessMethod.arguments) + "] " +
+                        "with the same arity and different return type or type parameters");
+            }
+        } else {
+            PainlessMethod painlessMethod = painlessClassBuilder.staticMethods.get(painlessMethodKey);
+
+            if (painlessMethod == null) {
+                org.objectweb.asm.commons.Method asmMethod = org.objectweb.asm.commons.Method.getMethod(javaMethod);
+                MethodHandle javaMethodHandle;
+
+                if (augmentedClass == null) {
+                    try {
+                        javaMethodHandle = MethodHandles.publicLookup().in(targetClass).unreflect(javaMethod);
+                    } catch (IllegalAccessException iae) {
+                        throw new IllegalArgumentException("method handle [[" + targetClass.getCanonicalName() + "], " +
+                                "[" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found", iae);
+                    }
+                } else {
+                    try {
+                        javaMethodHandle = MethodHandles.publicLookup().in(augmentedClass).unreflect(javaMethod);
+                    } catch (IllegalAccessException iae) {
+                        throw new IllegalArgumentException("method handle [[" + targetClass.getCanonicalName() + "], " +
+                                "[" + methodName + "], " + typesToCanonicalTypeNames(typeParameters) + "] not found " +
+                                "with augmented target class [" + typeToCanonicalTypeName(augmentedClass) + "]", iae);
+                    }
+                }
+
+                painlessMethod = painlessMethodCache.computeIfAbsent(
+                        new PainlessMethodCacheKey(targetClass, methodName, typeParameters),
+                        key -> new PainlessMethod(methodName, targetClass, augmentedClass, returnType,
+                                typeParameters, asmMethod, javaMethod.getModifiers(), javaMethodHandle));
+
+                painlessClassBuilder.methods.put(painlessMethodKey, painlessMethod);
+            } else if ((painlessMethod.name.equals(methodName) && painlessMethod.rtn == returnType &&
+                    painlessMethod.arguments.equals(typeParameters)) == false) {
+                throw new IllegalArgumentException("cannot have methods " +
+                        "[[" + targetCanonicalClassName + "], [" + methodName + "], " +
+                        "[" + typeToCanonicalTypeName(returnType) + "], " +
+                        typesToCanonicalTypeNames(typeParameters) + "] and " +
+                        "[[" + targetCanonicalClassName + "], [" + methodName + "], " +
+                        "[" + typeToCanonicalTypeName(painlessMethod.rtn) + "], " +
+                        typesToCanonicalTypeNames(painlessMethod.arguments) + "] " +
+                        "with the same arity and different return type or type parameters");
             }
         }
     }
 
-    private void addField(String ownerStructName, WhitelistField whitelistField) {
-        PainlessClassBuilder ownerStruct = classesToPainlessClasses.get(canonicalClassNamesToClasses.get(ownerStructName));
+    public void addPainlessField(String targetCanonicalClassName, String fieldName, String typeNameParameter) {
+        Objects.requireNonNull(targetCanonicalClassName);
+        Objects.requireNonNull(fieldName);
+        Objects.requireNonNull(typeNameParameter);
 
-        if (ownerStruct == null) {
-            throw new IllegalArgumentException("owner struct [" + ownerStructName + "] not defined for method with " +
-                "name [" + whitelistField.javaFieldName + "] and type " + whitelistField.painlessFieldTypeName);
+        Class<?> targetClass = canonicalClassNamesToClasses.get(targetCanonicalClassName);
+
+        if (targetClass == null) {
+            throw new IllegalArgumentException("class [" + targetCanonicalClassName + "] not found");
         }
 
-        if (FIELD_NAME_PATTERN.matcher(whitelistField.javaFieldName).matches() == false) {
-            throw new IllegalArgumentException("invalid field name " +
-                "[" + whitelistField.painlessFieldTypeName + "] for owner struct [" + ownerStructName + "].");
-        }
-
-        java.lang.reflect.Field javaField;
+        Class<?> typeParameter;
 
         try {
-            javaField = ownerStruct.clazz.getField(whitelistField.javaFieldName);
-        } catch (NoSuchFieldException exception) {
-            throw new IllegalArgumentException("field [" + whitelistField.javaFieldName + "] " +
-                "not found for class [" + ownerStruct.clazz.getName() + "].");
-        }
-
-        Class<?> painlessFieldClass;
-
-        try {
-            painlessFieldClass = canonicalTypeNameToType(whitelistField.painlessFieldTypeName);
+            typeParameter = canonicalTypeNameToType(typeNameParameter);
         } catch (IllegalArgumentException iae) {
-            throw new IllegalArgumentException("struct not defined for return type [" + whitelistField.painlessFieldTypeName + "] " +
-                "with owner struct [" + ownerStructName + "] and field with name [" + whitelistField.javaFieldName + "]", iae);
+            throw new IllegalArgumentException("type parameter [" + typeNameParameter + "] not found " +
+                    "for field [[" + targetCanonicalClassName + "], [" + fieldName + "]");
         }
 
+
+        addPainlessField(targetClass, fieldName, typeParameter);
+    }
+
+    public void addPainlessField(Class<?> targetClass, String fieldName, Class<?> typeParameter) {
+        Objects.requireNonNull(targetClass);
+        Objects.requireNonNull(fieldName);
+        Objects.requireNonNull(typeParameter);
+
+        if (targetClass == def.class) {
+            throw new IllegalArgumentException("cannot add field to reserved class [" + DEF_CLASS_NAME + "]");
+        }
+
+        String targetCanonicalClassName = typeToCanonicalTypeName(targetClass);
+
+        if (FIELD_NAME_PATTERN.matcher(fieldName).matches() == false) {
+            throw new IllegalArgumentException(
+                    "invalid field name [" + fieldName + "] for target class [" + targetCanonicalClassName + "].");
+        }
+
+
+        PainlessClassBuilder painlessClassBuilder = classesToPainlessClassBuilders.get(targetClass);
+
+        if (painlessClassBuilder == null) {
+            throw new IllegalArgumentException("class [" + targetCanonicalClassName + "] not found");
+        }
+
+        try {
+            validateType(typeParameter);
+        } catch (IllegalArgumentException iae) {
+            throw new IllegalArgumentException("type parameter [" + typeToCanonicalTypeName(typeParameter) + "] not found " +
+                    "for field [[" + targetCanonicalClassName + "], [" + fieldName + "]", iae);
+        }
+
+        Field javaField;
+
+        try {
+            javaField = targetClass.getField(fieldName);
+        } catch (NoSuchFieldException nsme) {
+            throw new IllegalArgumentException(
+                    "field reflection object [[" + targetCanonicalClassName + "], [" + fieldName + "] not found", nsme);
+        }
+
+        if (javaField.getType() != typeToJavaType(typeParameter)) {
+            throw new IllegalArgumentException("type parameter [" + typeToCanonicalTypeName(javaField.getType()) + "] " +
+                    "does not match the specified type parameter [" + typeToCanonicalTypeName(typeParameter) + "] " +
+                    "for field [[" + targetCanonicalClassName + "], [" + fieldName + "]");
+        }
+
+        String painlessFieldKey = buildPainlessFieldKey(fieldName);
+
         if (Modifier.isStatic(javaField.getModifiers())) {
             if (Modifier.isFinal(javaField.getModifiers()) == false) {
-                throw new IllegalArgumentException("static [" + whitelistField.javaFieldName + "] " +
-                    "with owner struct [" + ownerStruct.name + "] is not final");
+                throw new IllegalArgumentException("static field [[" + targetCanonicalClassName + "]. [" + fieldName + "]] must be final");
             }
 
-            PainlessField painlessField = ownerStruct.staticMembers.get(whitelistField.javaFieldName);
+            PainlessField painlessField = painlessClassBuilder.staticMembers.get(painlessFieldKey);
 
             if (painlessField == null) {
                 painlessField = painlessFieldCache.computeIfAbsent(
-                    new PainlessFieldCacheKey(ownerStruct.clazz, whitelistField.javaFieldName, painlessFieldClass),
-                    key -> new PainlessField(whitelistField.javaFieldName, javaField.getName(),
-                        ownerStruct.clazz, painlessFieldClass, javaField.getModifiers(), null, null));
-                ownerStruct.staticMembers.put(whitelistField.javaFieldName, painlessField);
-            } else if (painlessField.clazz != painlessFieldClass) {
-                throw new IllegalArgumentException("illegal duplicate static fields [" + whitelistField.javaFieldName + "] " +
-                    "found within the struct [" + ownerStruct.name + "] with type [" + whitelistField.painlessFieldTypeName + "]");
+                        new PainlessFieldCacheKey(targetClass, fieldName, typeParameter),
+                        key -> new PainlessField(fieldName, javaField.getName(), targetClass,
+                                typeParameter, javaField.getModifiers(), null, null));
+
+                painlessClassBuilder.staticMembers.put(painlessFieldKey, painlessField);
+            } else if (painlessField.clazz != typeParameter) {
+                throw new IllegalArgumentException("cannot have static fields " +
+                        "[[" + targetCanonicalClassName + "], [" + fieldName + "], [" +
+                        typeToCanonicalTypeName(typeParameter) + "] and " +
+                        "[[" + targetCanonicalClassName + "], [" + painlessField.name + "], " +
+                        typeToCanonicalTypeName(painlessField.clazz) + "] " +
+                        "with the same and different type parameters");
             }
         } else {
-            MethodHandle javaMethodHandleGetter;
-            MethodHandle javaMethodHandleSetter;
+            MethodHandle methodHandleGetter;
 
             try {
-                if (Modifier.isStatic(javaField.getModifiers()) == false) {
-                    javaMethodHandleGetter = MethodHandles.publicLookup().unreflectGetter(javaField);
-                    javaMethodHandleSetter = MethodHandles.publicLookup().unreflectSetter(javaField);
-                } else {
-                    javaMethodHandleGetter = null;
-                    javaMethodHandleSetter = null;
-                }
-            } catch (IllegalAccessException exception) {
-                throw new IllegalArgumentException("getter/setter [" + whitelistField.javaFieldName + "]" +
-                    " not found for class [" + ownerStruct.clazz.getName() + "].");
+                methodHandleGetter = MethodHandles.publicLookup().unreflectGetter(javaField);
+            } catch (IllegalAccessException iae) {
+                throw new IllegalArgumentException(
+                        "method handle getter not found for field [[" + targetCanonicalClassName + "], [" + fieldName + "]]");
             }
 
-            PainlessField painlessField = ownerStruct.members.get(whitelistField.javaFieldName);
+            MethodHandle methodHandleSetter;
+
+            try {
+                methodHandleSetter = MethodHandles.publicLookup().unreflectSetter(javaField);
+            } catch (IllegalAccessException iae) {
+                throw new IllegalArgumentException(
+                        "method handle setter not found for field [[" + targetCanonicalClassName + "], [" + fieldName + "]]");
+            }
+
+            PainlessField painlessField = painlessClassBuilder.members.get(painlessFieldKey);
 
             if (painlessField == null) {
                 painlessField = painlessFieldCache.computeIfAbsent(
-                    new PainlessFieldCacheKey(ownerStruct.clazz, whitelistField.javaFieldName, painlessFieldClass),
-                    key -> new PainlessField(whitelistField.javaFieldName, javaField.getName(),
-                        ownerStruct.clazz, painlessFieldClass, javaField.getModifiers(), javaMethodHandleGetter, javaMethodHandleSetter));
-                ownerStruct.members.put(whitelistField.javaFieldName, painlessField);
-            } else if (painlessField.clazz != painlessFieldClass) {
-                throw new IllegalArgumentException("illegal duplicate member fields [" + whitelistField.javaFieldName + "] " +
-                    "found within the struct [" + ownerStruct.name + "] with type [" + whitelistField.painlessFieldTypeName + "]");
+                        new PainlessFieldCacheKey(targetClass, painlessFieldKey, typeParameter),
+                        key -> new PainlessField(fieldName, javaField.getName(), targetClass,
+                                typeParameter, javaField.getModifiers(), methodHandleGetter, methodHandleSetter));
+
+                painlessClassBuilder.members.put(fieldName, painlessField);
+            } else if (painlessField.clazz != typeParameter) {
+                throw new IllegalArgumentException("cannot have fields " +
+                        "[[" + targetCanonicalClassName + "], [" + fieldName + "], [" +
+                        typeToCanonicalTypeName(typeParameter) + "] and " +
+                        "[[" + targetCanonicalClassName + "], [" + painlessField.name + "], " +
+                        typeToCanonicalTypeName(painlessField.clazz) + "] " +
+                        "with the same and different type parameters");
             }
         }
     }
 
     private void copyStruct(String struct, List<String> children) {
-        final PainlessClassBuilder owner = classesToPainlessClasses.get(canonicalClassNamesToClasses.get(struct));
+        final PainlessClassBuilder owner = classesToPainlessClassBuilders.get(canonicalClassNamesToClasses.get(struct));
 
         if (owner == null) {
             throw new IllegalArgumentException("Owner struct [" + struct + "] not defined for copy.");
@@ -516,7 +675,7 @@ public class PainlessLookupBuilder {
 
         for (int count = 0; count < children.size(); ++count) {
             final PainlessClassBuilder child =
-                    classesToPainlessClasses.get(canonicalClassNamesToClasses.get(children.get(count)));
+                    classesToPainlessClassBuilders.get(canonicalClassNamesToClasses.get(children.get(count)));
 
             if (child == null) {
                 throw new IllegalArgumentException("Child struct [" + children.get(count) + "]" +
@@ -690,7 +849,7 @@ public class PainlessLookupBuilder {
                 for (WhitelistClass whitelistStruct : whitelist.whitelistStructs) {
                     String painlessTypeName = whitelistStruct.javaClassName.replace('$', '.');
                     PainlessClassBuilder painlessStruct =
-                        classesToPainlessClasses.get(canonicalClassNamesToClasses.get(painlessTypeName));
+                        classesToPainlessClassBuilders.get(canonicalClassNamesToClasses.get(painlessTypeName));
 
                     if (painlessStruct != null && painlessStruct.clazz.getName().equals(whitelistStruct.javaClassName) == false) {
                         throw new IllegalArgumentException("struct [" + painlessStruct.name + "] cannot represent multiple classes " +
@@ -701,8 +860,8 @@ public class PainlessLookupBuilder {
                     addPainlessClass(
                             whitelist.javaClassLoader, whitelistStruct.javaClassName, whitelistStruct.onlyFQNJavaClassName == false);
 
-                    painlessStruct = classesToPainlessClasses.get(canonicalClassNamesToClasses.get(painlessTypeName));
-                    classesToPainlessClasses.put(painlessStruct.clazz, painlessStruct);
+                    painlessStruct = classesToPainlessClassBuilders.get(canonicalClassNamesToClasses.get(painlessTypeName));
+                    classesToPainlessClassBuilders.put(painlessStruct.clazz, painlessStruct);
                 }
             }
 
@@ -715,17 +874,19 @@ public class PainlessLookupBuilder {
 
                     for (WhitelistConstructor whitelistConstructor : whitelistStruct.whitelistConstructors) {
                         origin = whitelistConstructor.origin;
-                        addConstructor(painlessTypeName, whitelistConstructor);
+                        addPainlessConstructor(painlessTypeName, whitelistConstructor.painlessParameterTypeNames);
                     }
 
                     for (WhitelistMethod whitelistMethod : whitelistStruct.whitelistMethods) {
                         origin = whitelistMethod.origin;
-                        addMethod(whitelist.javaClassLoader, painlessTypeName, whitelistMethod);
+                        addPainlessMethod(whitelist.javaClassLoader, painlessTypeName, whitelistMethod.javaAugmentedClassName,
+                                whitelistMethod.javaMethodName, whitelistMethod.painlessReturnTypeName,
+                                whitelistMethod.painlessParameterTypeNames);
                     }
 
                     for (WhitelistField whitelistField : whitelistStruct.whitelistFields) {
                         origin = whitelistField.origin;
-                        addField(painlessTypeName, whitelistField);
+                        addPainlessField(painlessTypeName, whitelistField.javaFieldName, whitelistField.painlessFieldTypeName);
                     }
                 }
             }
@@ -735,8 +896,8 @@ public class PainlessLookupBuilder {
 
         // goes through each Painless struct and determines the inheritance list,
         // and then adds all inherited types to the Painless struct's whitelist
-        for (Class<?> javaClass : classesToPainlessClasses.keySet()) {
-            PainlessClassBuilder painlessStruct = classesToPainlessClasses.get(javaClass);
+        for (Class<?> javaClass : classesToPainlessClassBuilders.keySet()) {
+            PainlessClassBuilder painlessStruct = classesToPainlessClassBuilders.get(javaClass);
 
             List<String> painlessSuperStructs = new ArrayList<>();
             Class<?> javaSuperClass = painlessStruct.clazz.getSuperclass();
@@ -747,7 +908,7 @@ public class PainlessLookupBuilder {
             // adds super classes to the inheritance list
             if (javaSuperClass != null && javaSuperClass.isInterface() == false) {
                 while (javaSuperClass != null) {
-                    PainlessClassBuilder painlessSuperStruct = classesToPainlessClasses.get(javaSuperClass);
+                    PainlessClassBuilder painlessSuperStruct = classesToPainlessClassBuilders.get(javaSuperClass);
 
                     if (painlessSuperStruct != null) {
                         painlessSuperStructs.add(painlessSuperStruct.name);
@@ -763,7 +924,7 @@ public class PainlessLookupBuilder {
                 Class<?> javaInterfaceLookup = javaInteraceLookups.pop();
 
                 for (Class<?> javaSuperInterface : javaInterfaceLookup.getInterfaces()) {
-                    PainlessClassBuilder painlessInterfaceStruct = classesToPainlessClasses.get(javaSuperInterface);
+                    PainlessClassBuilder painlessInterfaceStruct = classesToPainlessClassBuilders.get(javaSuperInterface);
 
                     if (painlessInterfaceStruct != null) {
                         String painlessInterfaceStructName = painlessInterfaceStruct.name;
@@ -784,7 +945,7 @@ public class PainlessLookupBuilder {
 
             // copies methods and fields from Object into interface types
             if (painlessStruct.clazz.isInterface() || (def.class.getSimpleName()).equals(painlessStruct.name)) {
-                PainlessClassBuilder painlessObjectStruct = classesToPainlessClasses.get(Object.class);
+                PainlessClassBuilder painlessObjectStruct = classesToPainlessClassBuilders.get(Object.class);
 
                 if (painlessObjectStruct != null) {
                     copyStruct(painlessStruct.name, Collections.singletonList(painlessObjectStruct.name));
@@ -793,14 +954,14 @@ public class PainlessLookupBuilder {
         }
 
         // precompute runtime classes
-        for (PainlessClassBuilder painlessStruct : classesToPainlessClasses.values()) {
+        for (PainlessClassBuilder painlessStruct : classesToPainlessClassBuilders.values()) {
             addRuntimeClass(painlessStruct);
         }
 
         Map<Class<?>, PainlessClass> javaClassesToPainlessClasses = new HashMap<>();
 
         // copy all structs to make them unmodifiable for outside users:
-        for (Map.Entry<Class<?>,PainlessClassBuilder> entry : classesToPainlessClasses.entrySet()) {
+        for (Map.Entry<Class<?>,PainlessClassBuilder> entry : classesToPainlessClassBuilders.entrySet()) {
             entry.getValue().functionalMethod = computeFunctionalInterfaceMethod(entry.getValue());
             javaClassesToPainlessClasses.put(entry.getKey(), entry.getValue().build());
         }

modules/lang-painless/src/main/java/org/elasticsearch/painless/lookup/PainlessLookupUtility.java

@@ -36,7 +36,9 @@ import java.util.Objects;
  * classes to be represented. The set of available classes will always be a subset of the available types.
  *
  * Under ambiguous circumstances most variable names are prefixed with asm, java, or painless. If the variable value is the same for asm,
- * java, and painless, no prefix is used.
+ * java, and painless, no prefix is used. Target is used as a prefix to represent if a constructor, method, or field is being
+ * called/accessed on that specific class.  Parameter is often a postfix used to represent if a type is used as a parameter to a
+ * constructor, method, or field.
  *
  * <ul>
  *     <li> - javaClassName     (String)         - the fully qualified java class name where '$' tokens represent inner classes excluding
@@ -150,8 +152,8 @@ public final class PainlessLookupUtility {
 
         String canonicalTypeName = type.getCanonicalName();
 
-        if (canonicalTypeName.startsWith(def.class.getName())) {
-            canonicalTypeName = canonicalTypeName.replace(def.class.getName(), DEF_TYPE_NAME);
+        if (canonicalTypeName.startsWith(def.class.getCanonicalName())) {
+            canonicalTypeName = canonicalTypeName.replace(def.class.getCanonicalName(), DEF_CLASS_NAME);
         }
 
         return canonicalTypeName;
@@ -351,7 +353,7 @@ public final class PainlessLookupUtility {
     /**
      * The def type name as specified in the source for a script.
      */
-    public static final String DEF_TYPE_NAME = "def";
+    public static final String DEF_CLASS_NAME = "def";
 
     /**
      * The method name for all constructors.

modules/lang-painless/src/main/resources/org/elasticsearch/painless/spi/java.lang.txt

@@ -148,7 +148,7 @@ class java.lang.Character {
   int MAX_RADIX
   char MAX_SURROGATE
   char MAX_VALUE
-  char MIN_CODE_POINT
+  int MIN_CODE_POINT
   char MIN_HIGH_SURROGATE
   char MIN_LOW_SURROGATE
   int MIN_RADIX

modules/rank-eval/src/main/java/org/elasticsearch/index/rankeval/DiscountedCumulativeGain.java

@@ -126,8 +126,6 @@ public class DiscountedCumulativeGain implements EvaluationMetric {
     @Override
     public EvalQueryQuality evaluate(String taskId, SearchHit[] hits,
             List<RatedDocument> ratedDocs) {
-        List<Integer> allRatings = ratedDocs.stream().mapToInt(RatedDocument::getRating).boxed()
-                .collect(Collectors.toList());
         List<RatedSearchHit> ratedHits = joinHitsWithRatings(hits, ratedDocs);
         List<Integer> ratingsInSearchHits = new ArrayList<>(ratedHits.size());
         int unratedResults = 0;
@@ -144,6 +142,8 @@ public class DiscountedCumulativeGain implements EvaluationMetric {
         double idcg = 0;
 
         if (normalize) {
+            List<Integer> allRatings = ratedDocs.stream().mapToInt(RatedDocument::getRating).boxed()
+                    .collect(Collectors.toList());
             Collections.sort(allRatings, Comparator.nullsLast(Collections.reverseOrder()));
             idcg = computeDCG(allRatings.subList(0, Math.min(ratingsInSearchHits.size(), allRatings.size())));
             if (idcg != 0) {

modules/rank-eval/src/main/java/org/elasticsearch/index/rankeval/EvalQueryQuality.java

@@ -41,19 +41,19 @@ import java.util.Objects;
 public class EvalQueryQuality implements ToXContentFragment, Writeable {
 
     private final String queryId;
-    private final double evaluationResult;
+    private final double metricScore;
     private MetricDetail optionalMetricDetails;
     private final List<RatedSearchHit> ratedHits;
 
-    public EvalQueryQuality(String id, double evaluationResult) {
+    public EvalQueryQuality(String id, double metricScore) {
         this.queryId = id;
-        this.evaluationResult = evaluationResult;
+        this.metricScore = metricScore;
         this.ratedHits = new ArrayList<>();
     }
 
     public EvalQueryQuality(StreamInput in) throws IOException {
         this.queryId = in.readString();
-        this.evaluationResult = in.readDouble();
+        this.metricScore = in.readDouble();
         this.ratedHits = in.readList(RatedSearchHit::new);
         this.optionalMetricDetails = in.readOptionalNamedWriteable(MetricDetail.class);
     }
@@ -61,7 +61,7 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
     // only used for parsing internally
     private EvalQueryQuality(String queryId, ParsedEvalQueryQuality builder) {
         this.queryId = queryId;
-        this.evaluationResult = builder.evaluationResult;
+        this.metricScore = builder.evaluationResult;
         this.optionalMetricDetails = builder.optionalMetricDetails;
         this.ratedHits = builder.ratedHits;
     }
@@ -69,7 +69,7 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
     @Override
     public void writeTo(StreamOutput out) throws IOException {
         out.writeString(queryId);
-        out.writeDouble(evaluationResult);
+        out.writeDouble(metricScore);
         out.writeList(ratedHits);
         out.writeOptionalNamedWriteable(this.optionalMetricDetails);
     }
@@ -78,8 +78,8 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
         return queryId;
     }
 
-    public double getQualityLevel() {
-        return evaluationResult;
+    public double metricScore() {
+        return metricScore;
     }
 
     public void setMetricDetails(MetricDetail breakdown) {
@@ -101,7 +101,7 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
     @Override
     public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
         builder.startObject(queryId);
-        builder.field(QUALITY_LEVEL_FIELD.getPreferredName(), this.evaluationResult);
+        builder.field(METRIC_SCORE_FIELD.getPreferredName(), this.metricScore);
         builder.startArray(UNRATED_DOCS_FIELD.getPreferredName());
         for (DocumentKey key : EvaluationMetric.filterUnratedDocuments(ratedHits)) {
             builder.startObject();
@@ -122,7 +122,7 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
         return builder;
     }
 
-    private static final ParseField QUALITY_LEVEL_FIELD = new ParseField("quality_level");
+    static final ParseField METRIC_SCORE_FIELD = new ParseField("metric_score");
     private static final ParseField UNRATED_DOCS_FIELD = new ParseField("unrated_docs");
     private static final ParseField HITS_FIELD = new ParseField("hits");
     private static final ParseField METRIC_DETAILS_FIELD = new ParseField("metric_details");
@@ -136,7 +136,7 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
     }
 
     static {
-        PARSER.declareDouble((obj, value) -> obj.evaluationResult = value, QUALITY_LEVEL_FIELD);
+        PARSER.declareDouble((obj, value) -> obj.evaluationResult = value, METRIC_SCORE_FIELD);
         PARSER.declareObject((obj, value) -> obj.optionalMetricDetails = value, (p, c) -> parseMetricDetail(p),
                 METRIC_DETAILS_FIELD);
         PARSER.declareObjectArray((obj, list) -> obj.ratedHits = list, (p, c) -> RatedSearchHit.parse(p), HITS_FIELD);
@@ -164,13 +164,13 @@ public class EvalQueryQuality implements ToXContentFragment, Writeable {
         }
         EvalQueryQuality other = (EvalQueryQuality) obj;
         return Objects.equals(queryId, other.queryId) &&
-                Objects.equals(evaluationResult, other.evaluationResult) &&
+                Objects.equals(metricScore, other.metricScore) &&
                 Objects.equals(ratedHits, other.ratedHits) &&
                 Objects.equals(optionalMetricDetails, other.optionalMetricDetails);
     }
 
     @Override
     public final int hashCode() {
-        return Objects.hash(queryId, evaluationResult, ratedHits, optionalMetricDetails);
+        return Objects.hash(queryId, metricScore, ratedHits, optionalMetricDetails);
     }
 }

modules/rank-eval/src/main/java/org/elasticsearch/index/rankeval/EvaluationMetric.java

@@ -39,23 +39,22 @@ import java.util.stream.Collectors;
 public interface EvaluationMetric extends ToXContentObject, NamedWriteable {
 
     /**
-     * Returns a single metric representing the ranking quality of a set of returned
-     * documents wrt. to a set of document ids labeled as relevant for this search.
+     * Evaluates a single ranking evaluation case.
      *
      * @param taskId
-     *            the id of the query for which the ranking is currently evaluated
+     *            an identifier of the query for which the search ranking is
+     *            evaluated
      * @param hits
-     *            the result hits as returned by a search request
+     *            the search result hits
      * @param ratedDocs
-     *            the documents that were ranked by human annotators for this query
-     *            case
-     * @return some metric representing the quality of the result hit list wrt. to
-     *         relevant doc ids.
+     *            the documents that contain the document rating for this query case
+     * @return an {@link EvalQueryQuality} instance that contains the metric score
+     *         with respect to the provided search hits and ratings
      */
     EvalQueryQuality evaluate(String taskId, SearchHit[] hits, List<RatedDocument> ratedDocs);
 
     /**
-     * join hits with rated documents using the joint _index/_id document key
+     * Joins hits with rated documents using the joint _index/_id document key.
      */
     static List<RatedSearchHit> joinHitsWithRatings(SearchHit[] hits, List<RatedDocument> ratedDocs) {
         Map<DocumentKey, RatedDocument> ratedDocumentMap = ratedDocs.stream()
@@ -74,7 +73,7 @@ public interface EvaluationMetric extends ToXContentObject, NamedWriteable {
     }
 
     /**
-     * filter @link {@link RatedSearchHit} that don't have a rating
+     * Filter {@link RatedSearchHit}s that do not have a rating.
      */
     static List<DocumentKey> filterUnratedDocuments(List<RatedSearchHit> ratedHits) {
         return ratedHits.stream().filter(hit -> hit.getRating().isPresent() == false)
@@ -82,11 +81,11 @@ public interface EvaluationMetric extends ToXContentObject, NamedWriteable {
     }
 
     /**
-     * how evaluation metrics for particular search queries get combined for the overall evaluation score.
-     * Defaults to averaging over the partial results.
+     * Combine several {@link EvalQueryQuality} results into the overall evaluation score.
+     * This defaults to averaging over the partial results, but can be overwritten to obtain a different behavior.
      */
     default double combine(Collection<EvalQueryQuality> partialResults) {
-        return partialResults.stream().mapToDouble(EvalQueryQuality::getQualityLevel).sum() / partialResults.size();
+        return partialResults.stream().mapToDouble(EvalQueryQuality::metricScore).sum() / partialResults.size();
     }
 
     /**

modules/rank-eval/src/main/java/org/elasticsearch/index/rankeval/MeanReciprocalRank.java

@@ -110,8 +110,7 @@ public class MeanReciprocalRank implements EvaluationMetric {
      * Compute ReciprocalRank based on provided relevant document IDs.
      **/
     @Override
-    public EvalQueryQuality evaluate(String taskId, SearchHit[] hits,
-            List<RatedDocument> ratedDocs) {
+    public EvalQueryQuality evaluate(String taskId, SearchHit[] hits, List<RatedDocument> ratedDocs) {
         List<RatedSearchHit> ratedHits = joinHitsWithRatings(hits, ratedDocs);
         int firstRelevant = -1;
         int rank = 1;

modules/rank-eval/src/main/java/org/elasticsearch/index/rankeval/RankEvalResponse.java

@@ -48,15 +48,15 @@ import java.util.stream.Collectors;
 public class RankEvalResponse extends ActionResponse implements ToXContentObject {
 
     /** The overall evaluation result. */
-    private double evaluationResult;
+    private double metricScore;
     /** details about individual ranking evaluation queries, keyed by their id */
     private Map<String, EvalQueryQuality> details;
     /** exceptions for specific ranking evaluation queries, keyed by their id */
     private Map<String, Exception> failures;
 
-    public RankEvalResponse(double qualityLevel, Map<String, EvalQueryQuality> partialResults,
+    public RankEvalResponse(double metricScore, Map<String, EvalQueryQuality> partialResults,
             Map<String, Exception> failures) {
-        this.evaluationResult = qualityLevel;
+        this.metricScore = metricScore;
         this.details =  new HashMap<>(partialResults);
         this.failures = new HashMap<>(failures);
     }
@@ -65,8 +65,8 @@ public class RankEvalResponse extends ActionResponse implements ToXContentObject
         // only used in RankEvalAction#newResponse()
     }
 
-    public double getEvaluationResult() {
-        return evaluationResult;
+    public double getMetricScore() {
+        return metricScore;
     }
 
     public Map<String, EvalQueryQuality> getPartialResults() {
@@ -85,7 +85,7 @@ public class RankEvalResponse extends ActionResponse implements ToXContentObject
     @Override
     public void writeTo(StreamOutput out) throws IOException {
         super.writeTo(out);
-        out.writeDouble(evaluationResult);
+        out.writeDouble(metricScore);
         out.writeVInt(details.size());
         for (String queryId : details.keySet()) {
             out.writeString(queryId);
@@ -101,7 +101,7 @@ public class RankEvalResponse extends ActionResponse implements ToXContentObject
     @Override
     public void readFrom(StreamInput in) throws IOException {
         super.readFrom(in);
-        this.evaluationResult = in.readDouble();
+        this.metricScore = in.readDouble();
         int partialResultSize = in.readVInt();
         this.details = new HashMap<>(partialResultSize);
         for (int i = 0; i < partialResultSize; i++) {
@@ -120,7 +120,7 @@ public class RankEvalResponse extends ActionResponse implements ToXContentObject
     @Override
     public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
         builder.startObject();
-        builder.field("quality_level", evaluationResult);
+        builder.field("metric_score", metricScore);
         builder.startObject("details");
         for (String key : details.keySet()) {
             details.get(key).toXContent(builder, params);
@@ -137,7 +137,6 @@ public class RankEvalResponse extends ActionResponse implements ToXContentObject
         return builder;
     }
 
-    private static final ParseField QUALITY_LEVEL_FIELD = new ParseField("quality_level");
     private static final ParseField DETAILS_FIELD = new ParseField("details");
     private static final ParseField FAILURES_FIELD = new ParseField("failures");
     @SuppressWarnings("unchecked")
@@ -147,7 +146,7 @@ public class RankEvalResponse extends ActionResponse implements ToXContentObject
                     ((List<EvalQueryQuality>) a[1]).stream().collect(Collectors.toMap(EvalQueryQuality::getId, Function.identity())),
                     ((List<Tuple<String, Exception>>) a[2]).stream().collect(Collectors.toMap(Tuple::v1, Tuple::v2))));
     static {
-        PARSER.declareDouble(ConstructingObjectParser.constructorArg(), QUALITY_LEVEL_FIELD);
+        PARSER.declareDouble(ConstructingObjectParser.constructorArg(), EvalQueryQuality.METRIC_SCORE_FIELD);
         PARSER.declareNamedObjects(ConstructingObjectParser.optionalConstructorArg(), (p, c, n) -> EvalQueryQuality.fromXContent(p, n),
                 DETAILS_FIELD);
         PARSER.declareNamedObjects(ConstructingObjectParser.optionalConstructorArg(), (p, c, n) -> {

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/DiscountedCumulativeGainTests.java

@@ -76,7 +76,7 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
             hits[i].shard(new SearchShardTarget("testnode", new Index("index", "uuid"), 0, null));
         }
         DiscountedCumulativeGain dcg = new DiscountedCumulativeGain();
-        assertEquals(EXPECTED_DCG, dcg.evaluate("id", hits, rated).getQualityLevel(), DELTA);
+        assertEquals(EXPECTED_DCG, dcg.evaluate("id", hits, rated).metricScore(), DELTA);
 
         /**
          * Check with normalization: to get the maximal possible dcg, sort documents by
@@ -94,7 +94,7 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
          * idcg = 14.595390756454922 (sum of last column)
          */
         dcg = new DiscountedCumulativeGain(true, null, 10);
-        assertEquals(EXPECTED_NDCG, dcg.evaluate("id", hits, rated).getQualityLevel(), DELTA);
+        assertEquals(EXPECTED_NDCG, dcg.evaluate("id", hits, rated).metricScore(), DELTA);
     }
 
     /**
@@ -127,7 +127,7 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
         }
         DiscountedCumulativeGain dcg = new DiscountedCumulativeGain();
         EvalQueryQuality result = dcg.evaluate("id", hits, rated);
-        assertEquals(12.779642067948913, result.getQualityLevel(), DELTA);
+        assertEquals(12.779642067948913, result.metricScore(), DELTA);
         assertEquals(2, filterUnratedDocuments(result.getHitsAndRatings()).size());
 
         /**
@@ -146,7 +146,7 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
          * idcg = 13.347184833073591 (sum of last column)
          */
         dcg = new DiscountedCumulativeGain(true, null, 10);
-        assertEquals(12.779642067948913 / 13.347184833073591, dcg.evaluate("id", hits, rated).getQualityLevel(), DELTA);
+        assertEquals(12.779642067948913 / 13.347184833073591, dcg.evaluate("id", hits, rated).metricScore(), DELTA);
     }
 
     /**
@@ -184,7 +184,7 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
         }
         DiscountedCumulativeGain dcg = new DiscountedCumulativeGain();
         EvalQueryQuality result = dcg.evaluate("id", hits, ratedDocs);
-        assertEquals(12.392789260714371, result.getQualityLevel(), DELTA);
+        assertEquals(12.392789260714371, result.metricScore(), DELTA);
         assertEquals(1, filterUnratedDocuments(result.getHitsAndRatings()).size());
 
         /**
@@ -204,7 +204,7 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
          * idcg = 13.347184833073591 (sum of last column)
          */
         dcg = new DiscountedCumulativeGain(true, null, 10);
-        assertEquals(12.392789260714371 / 13.347184833073591, dcg.evaluate("id", hits, ratedDocs).getQualityLevel(), DELTA);
+        assertEquals(12.392789260714371 / 13.347184833073591, dcg.evaluate("id", hits, ratedDocs).metricScore(), DELTA);
     }
 
     /**
@@ -223,13 +223,13 @@ public class DiscountedCumulativeGainTests extends ESTestCase {
         SearchHit[] hits = new SearchHit[0];
         DiscountedCumulativeGain dcg = new DiscountedCumulativeGain();
         EvalQueryQuality result = dcg.evaluate("id", hits, ratedDocs);
-        assertEquals(0.0d, result.getQualityLevel(), DELTA);
+        assertEquals(0.0d, result.metricScore(), DELTA);
         assertEquals(0, filterUnratedDocuments(result.getHitsAndRatings()).size());
 
         // also check normalized
         dcg = new DiscountedCumulativeGain(true, null, 10);
         result = dcg.evaluate("id", hits, ratedDocs);
-        assertEquals(0.0d, result.getQualityLevel(), DELTA);
+        assertEquals(0.0d, result.metricScore(), DELTA);
         assertEquals(0, filterUnratedDocuments(result.getHitsAndRatings()).size());
     }
 

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/EvalQueryQualityTests.java

@@ -129,7 +129,7 @@ public class EvalQueryQualityTests extends ESTestCase {
 
     private static EvalQueryQuality mutateTestItem(EvalQueryQuality original) {
         String id = original.getId();
-        double qualityLevel = original.getQualityLevel();
+        double metricScore = original.metricScore();
         List<RatedSearchHit> ratedHits = new ArrayList<>(original.getHitsAndRatings());
         MetricDetail metricDetails = original.getMetricDetails();
         switch (randomIntBetween(0, 3)) {
@@ -137,7 +137,7 @@ public class EvalQueryQualityTests extends ESTestCase {
             id = id + "_";
             break;
         case 1:
-            qualityLevel = qualityLevel + 0.1;
+            metricScore = metricScore + 0.1;
             break;
         case 2:
             if (metricDetails == null) {
@@ -152,7 +152,7 @@ public class EvalQueryQualityTests extends ESTestCase {
         default:
             throw new IllegalStateException("The test should only allow four parameters mutated");
         }
-        EvalQueryQuality evalQueryQuality = new EvalQueryQuality(id, qualityLevel);
+        EvalQueryQuality evalQueryQuality = new EvalQueryQuality(id, metricScore);
         evalQueryQuality.setMetricDetails(metricDetails);
         evalQueryQuality.addHitsAndRatings(ratedHits);
         return evalQueryQuality;

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/ExpectedReciprocalRankTests.java

@@ -76,10 +76,10 @@ public class ExpectedReciprocalRankTests extends ESTestCase {
         Integer[] relevanceRatings = new Integer[] { 3, 2, 0, 1};
         SearchHit[] hits = createSearchHits(rated, relevanceRatings);
         ExpectedReciprocalRank err = new ExpectedReciprocalRank(3, 0, 3);
-        assertEquals(0.8984375, err.evaluate("id", hits, rated).getQualityLevel(), DELTA);
+        assertEquals(0.8984375, err.evaluate("id", hits, rated).metricScore(), DELTA);
         // take 4th rank into window
         err = new ExpectedReciprocalRank(3, 0, 4);
-        assertEquals(0.8984375 + 0.00244140625, err.evaluate("id", hits, rated).getQualityLevel(), DELTA);
+        assertEquals(0.8984375 + 0.00244140625, err.evaluate("id", hits, rated).metricScore(), DELTA);
     }
 
     /**
@@ -102,11 +102,11 @@ public class ExpectedReciprocalRankTests extends ESTestCase {
         SearchHit[] hits = createSearchHits(rated, relevanceRatings);
         ExpectedReciprocalRank err = new ExpectedReciprocalRank(3, null, 4);
         EvalQueryQuality evaluation = err.evaluate("id", hits, rated);
-        assertEquals(0.875 + 0.00390625, evaluation.getQualityLevel(), DELTA);
+        assertEquals(0.875 + 0.00390625, evaluation.metricScore(), DELTA);
         assertEquals(1, ((ExpectedReciprocalRank.Detail) evaluation.getMetricDetails()).getUnratedDocs());
         // if we supply e.g. 2 as unknown docs rating, it should be the same as in the other test above
         err = new ExpectedReciprocalRank(3, 2, 4);
-        assertEquals(0.8984375 + 0.00244140625, err.evaluate("id", hits, rated).getQualityLevel(), DELTA);
+        assertEquals(0.8984375 + 0.00244140625, err.evaluate("id", hits, rated).metricScore(), DELTA);
     }
 
     private SearchHit[] createSearchHits(List<RatedDocument> rated, Integer[] relevanceRatings) {
@@ -126,7 +126,7 @@ public class ExpectedReciprocalRankTests extends ESTestCase {
      */
     public void testNoResults() throws Exception {
         ExpectedReciprocalRank err = new ExpectedReciprocalRank(5, 0, 10);
-        assertEquals(0.0, err.evaluate("id", new SearchHit[0], Collections.emptyList()).getQualityLevel(), DELTA);
+        assertEquals(0.0, err.evaluate("id", new SearchHit[0], Collections.emptyList()).metricScore(), DELTA);
     }
 
     public void testParseFromXContent() throws IOException {

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/MeanReciprocalRankTests.java

@@ -95,14 +95,14 @@ public class MeanReciprocalRankTests extends ESTestCase {
 
         int rankAtFirstRelevant = relevantAt + 1;
         EvalQueryQuality evaluation = reciprocalRank.evaluate("id", hits, ratedDocs);
-        assertEquals(1.0 / rankAtFirstRelevant, evaluation.getQualityLevel(), Double.MIN_VALUE);
+        assertEquals(1.0 / rankAtFirstRelevant, evaluation.metricScore(), Double.MIN_VALUE);
         assertEquals(rankAtFirstRelevant, ((MeanReciprocalRank.Detail) evaluation.getMetricDetails()).getFirstRelevantRank());
 
         // check that if we have fewer search hits than relevant doc position,
-        // we don't find any result and get 0.0 quality level
+        // we don't find any result and get 0.0 score
         reciprocalRank = new MeanReciprocalRank();
         evaluation = reciprocalRank.evaluate("id", Arrays.copyOfRange(hits, 0, relevantAt), ratedDocs);
-        assertEquals(0.0, evaluation.getQualityLevel(), Double.MIN_VALUE);
+        assertEquals(0.0, evaluation.metricScore(), Double.MIN_VALUE);
     }
 
     public void testEvaluationOneRelevantInResults() {
@@ -120,7 +120,7 @@ public class MeanReciprocalRankTests extends ESTestCase {
         }
 
         EvalQueryQuality evaluation = reciprocalRank.evaluate("id", hits, ratedDocs);
-        assertEquals(1.0 / (relevantAt + 1), evaluation.getQualityLevel(), Double.MIN_VALUE);
+        assertEquals(1.0 / (relevantAt + 1), evaluation.metricScore(), Double.MIN_VALUE);
         assertEquals(relevantAt + 1, ((MeanReciprocalRank.Detail) evaluation.getMetricDetails()).getFirstRelevantRank());
     }
 
@@ -140,7 +140,7 @@ public class MeanReciprocalRankTests extends ESTestCase {
 
         MeanReciprocalRank reciprocalRank = new MeanReciprocalRank(2, 10);
         EvalQueryQuality evaluation = reciprocalRank.evaluate("id", hits, rated);
-        assertEquals((double) 1 / 3, evaluation.getQualityLevel(), 0.00001);
+        assertEquals((double) 1 / 3, evaluation.metricScore(), 0.00001);
         assertEquals(3, ((MeanReciprocalRank.Detail) evaluation.getMetricDetails()).getFirstRelevantRank());
     }
 
@@ -158,13 +158,13 @@ public class MeanReciprocalRankTests extends ESTestCase {
         SearchHit[] hits = createSearchHits(0, 9, "test");
         List<RatedDocument> ratedDocs = new ArrayList<>();
         EvalQueryQuality evaluation = reciprocalRank.evaluate("id", hits, ratedDocs);
-        assertEquals(0.0, evaluation.getQualityLevel(), Double.MIN_VALUE);
+        assertEquals(0.0, evaluation.metricScore(), Double.MIN_VALUE);
     }
 
     public void testNoResults() throws Exception {
         SearchHit[] hits = new SearchHit[0];
         EvalQueryQuality evaluated = (new MeanReciprocalRank()).evaluate("id", hits, Collections.emptyList());
-        assertEquals(0.0d, evaluated.getQualityLevel(), 0.00001);
+        assertEquals(0.0d, evaluated.metricScore(), 0.00001);
         assertEquals(-1, ((MeanReciprocalRank.Detail) evaluated.getMetricDetails()).getFirstRelevantRank());
     }
 

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/PrecisionAtKTests.java

@@ -53,7 +53,7 @@ public class PrecisionAtKTests extends ESTestCase {
         List<RatedDocument> rated = new ArrayList<>();
         rated.add(createRatedDoc("test", "0", RELEVANT_RATING_1));
         EvalQueryQuality evaluated = (new PrecisionAtK()).evaluate("id", toSearchHits(rated, "test"), rated);
-        assertEquals(1, evaluated.getQualityLevel(), 0.00001);
+        assertEquals(1, evaluated.metricScore(), 0.00001);
         assertEquals(1, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(1, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }
@@ -66,7 +66,7 @@ public class PrecisionAtKTests extends ESTestCase {
         rated.add(createRatedDoc("test", "3", RELEVANT_RATING_1));
         rated.add(createRatedDoc("test", "4", IRRELEVANT_RATING_0));
         EvalQueryQuality evaluated = (new PrecisionAtK()).evaluate("id", toSearchHits(rated, "test"), rated);
-        assertEquals((double) 4 / 5, evaluated.getQualityLevel(), 0.00001);
+        assertEquals((double) 4 / 5, evaluated.metricScore(), 0.00001);
         assertEquals(4, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(5, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }
@@ -85,7 +85,7 @@ public class PrecisionAtKTests extends ESTestCase {
         rated.add(createRatedDoc("test", "4", 4));
         PrecisionAtK precisionAtN = new PrecisionAtK(2, false, 5);
         EvalQueryQuality evaluated = precisionAtN.evaluate("id", toSearchHits(rated, "test"), rated);
-        assertEquals((double) 3 / 5, evaluated.getQualityLevel(), 0.00001);
+        assertEquals((double) 3 / 5, evaluated.metricScore(), 0.00001);
         assertEquals(3, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(5, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }
@@ -99,7 +99,7 @@ public class PrecisionAtKTests extends ESTestCase {
         rated.add(createRatedDoc("test", "2", IRRELEVANT_RATING_0));
         // the following search hits contain only the last three documents
         EvalQueryQuality evaluated = (new PrecisionAtK()).evaluate("id", toSearchHits(rated.subList(2, 5), "test"), rated);
-        assertEquals((double) 2 / 3, evaluated.getQualityLevel(), 0.00001);
+        assertEquals((double) 2 / 3, evaluated.metricScore(), 0.00001);
         assertEquals(2, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(3, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }
@@ -114,14 +114,14 @@ public class PrecisionAtKTests extends ESTestCase {
         searchHits[2].shard(new SearchShardTarget("testnode", new Index("index", "uuid"), 0, null));
 
         EvalQueryQuality evaluated = (new PrecisionAtK()).evaluate("id", searchHits, rated);
-        assertEquals((double) 2 / 3, evaluated.getQualityLevel(), 0.00001);
+        assertEquals((double) 2 / 3, evaluated.metricScore(), 0.00001);
         assertEquals(2, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(3, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
 
         // also try with setting `ignore_unlabeled`
         PrecisionAtK prec = new PrecisionAtK(1, true, 10);
         evaluated = prec.evaluate("id", searchHits, rated);
-        assertEquals((double) 2 / 2, evaluated.getQualityLevel(), 0.00001);
+        assertEquals((double) 2 / 2, evaluated.metricScore(), 0.00001);
         assertEquals(2, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(2, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }
@@ -133,14 +133,14 @@ public class PrecisionAtKTests extends ESTestCase {
             hits[i].shard(new SearchShardTarget("testnode", new Index("index", "uuid"), 0, null));
         }
         EvalQueryQuality evaluated = (new PrecisionAtK()).evaluate("id", hits, Collections.emptyList());
-        assertEquals(0.0d, evaluated.getQualityLevel(), 0.00001);
+        assertEquals(0.0d, evaluated.metricScore(), 0.00001);
         assertEquals(0, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(5, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
 
         // also try with setting `ignore_unlabeled`
         PrecisionAtK prec = new PrecisionAtK(1, true, 10);
         evaluated = prec.evaluate("id", hits, Collections.emptyList());
-        assertEquals(0.0d, evaluated.getQualityLevel(), 0.00001);
+        assertEquals(0.0d, evaluated.metricScore(), 0.00001);
         assertEquals(0, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(0, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }
@@ -148,7 +148,7 @@ public class PrecisionAtKTests extends ESTestCase {
     public void testNoResults() throws Exception {
         SearchHit[] hits = new SearchHit[0];
         EvalQueryQuality evaluated = (new PrecisionAtK()).evaluate("id", hits, Collections.emptyList());
-        assertEquals(0.0d, evaluated.getQualityLevel(), 0.00001);
+        assertEquals(0.0d, evaluated.metricScore(), 0.00001);
         assertEquals(0, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRelevantRetrieved());
         assertEquals(0, ((PrecisionAtK.Detail) evaluated.getMetricDetails()).getRetrieved());
     }

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/RankEvalRequestIT.java

@@ -114,7 +114,7 @@ public class RankEvalRequestIT extends ESIntegTestCase {
         // the expected Prec@ for the first query is 4/6 and the expected Prec@ for the
         // second is 1/6, divided by 2 to get the average
         double expectedPrecision = (1.0 / 6.0 + 4.0 / 6.0) / 2.0;
-        assertEquals(expectedPrecision, response.getEvaluationResult(), Double.MIN_VALUE);
+        assertEquals(expectedPrecision, response.getMetricScore(), Double.MIN_VALUE);
         Set<Entry<String, EvalQueryQuality>> entrySet = response.getPartialResults().entrySet();
         assertEquals(2, entrySet.size());
         for (Entry<String, EvalQueryQuality> entry : entrySet) {
@@ -157,7 +157,7 @@ public class RankEvalRequestIT extends ESIntegTestCase {
         // if we look only at top 3 documente, the expected P@3 for the first query is
         // 2/3 and the expected Prec@ for the second is 1/3, divided by 2 to get the average
         expectedPrecision = (1.0 / 3.0 + 2.0 / 3.0) / 2.0;
-        assertEquals(expectedPrecision, response.getEvaluationResult(), Double.MIN_VALUE);
+        assertEquals(expectedPrecision, response.getMetricScore(), Double.MIN_VALUE);
     }
 
     /**
@@ -186,7 +186,7 @@ public class RankEvalRequestIT extends ESIntegTestCase {
                 new RankEvalRequest(task, new String[] { TEST_INDEX }));
 
         RankEvalResponse response = client().execute(RankEvalAction.INSTANCE, builder.request()).actionGet();
-        assertEquals(DiscountedCumulativeGainTests.EXPECTED_DCG, response.getEvaluationResult(), 10E-14);
+        assertEquals(DiscountedCumulativeGainTests.EXPECTED_DCG, response.getMetricScore(), 10E-14);
 
         // test that a different window size k affects the result
         metric = new DiscountedCumulativeGain(false, null, 3);
@@ -195,7 +195,7 @@ public class RankEvalRequestIT extends ESIntegTestCase {
         builder = new RankEvalRequestBuilder(client(), RankEvalAction.INSTANCE, new RankEvalRequest(task, new String[] { TEST_INDEX }));
 
         response = client().execute(RankEvalAction.INSTANCE, builder.request()).actionGet();
-        assertEquals(12.39278926071437, response.getEvaluationResult(), 10E-14);
+        assertEquals(12.39278926071437, response.getMetricScore(), 10E-14);
     }
 
     public void testMRRRequest() {
@@ -218,7 +218,7 @@ public class RankEvalRequestIT extends ESIntegTestCase {
         // the expected reciprocal rank for the berlin_query is 1/1
         // dividing by 2 to get the average
         double expectedMRR = (1.0 + 1.0 / 5.0) / 2.0;
-        assertEquals(expectedMRR, response.getEvaluationResult(), 0.0);
+        assertEquals(expectedMRR, response.getMetricScore(), 0.0);
 
         // test that a different window size k affects the result
         metric = new MeanReciprocalRank(1, 3);
@@ -231,7 +231,7 @@ public class RankEvalRequestIT extends ESIntegTestCase {
         // the reciprocal rank for the berlin_query is 1/1
         // dividing by 2 to get the average
         expectedMRR = 1.0 / 2.0;
-        assertEquals(expectedMRR, response.getEvaluationResult(), 0.0);
+        assertEquals(expectedMRR, response.getMetricScore(), 0.0);
     }
 
     /**

modules/rank-eval/src/test/java/org/elasticsearch/index/rankeval/RankEvalResponseTests.java

@@ -102,7 +102,7 @@ public class RankEvalResponseTests extends ESTestCase {
             try (StreamInput in = output.bytes().streamInput()) {
                 RankEvalResponse deserializedResponse = new RankEvalResponse();
                 deserializedResponse.readFrom(in);
-                assertEquals(randomResponse.getEvaluationResult(), deserializedResponse.getEvaluationResult(), Double.MIN_VALUE);
+                assertEquals(randomResponse.getMetricScore(), deserializedResponse.getMetricScore(), Double.MIN_VALUE);
                 assertEquals(randomResponse.getPartialResults(), deserializedResponse.getPartialResults());
                 assertEquals(randomResponse.getFailures().keySet(), deserializedResponse.getFailures().keySet());
                 assertNotSame(randomResponse, deserializedResponse);
@@ -130,7 +130,7 @@ public class RankEvalResponseTests extends ESTestCase {
         assertNotSame(testItem, parsedItem);
         // We cannot check equality of object here because some information (e.g.
         // SearchHit#shard)  cannot fully be parsed back.
-        assertEquals(testItem.getEvaluationResult(), parsedItem.getEvaluationResult(), 0.0);
+        assertEquals(testItem.getMetricScore(), parsedItem.getMetricScore(), 0.0);
         assertEquals(testItem.getPartialResults().keySet(), parsedItem.getPartialResults().keySet());
         for (EvalQueryQuality metricDetail : testItem.getPartialResults().values()) {
             EvalQueryQuality parsedEvalQueryQuality = parsedItem.getPartialResults().get(metricDetail.getId());
@@ -154,10 +154,10 @@ public class RankEvalResponseTests extends ESTestCase {
         XContentBuilder builder = XContentFactory.contentBuilder(XContentType.JSON);
         String xContent = BytesReference.bytes(response.toXContent(builder, ToXContent.EMPTY_PARAMS)).utf8ToString();
         assertEquals(("{" +
-                "    \"quality_level\": 0.123," +
+                "    \"metric_score\": 0.123," +
                 "    \"details\": {" +
                 "        \"coffee_query\": {" +
-                "            \"quality_level\": 0.1," +
+                "            \"metric_score\": 0.1," +
                 "            \"unrated_docs\": [{\"_index\":\"index\",\"_id\":\"456\"}]," +
                 "            \"hits\":[{\"hit\":{\"_index\":\"index\",\"_type\":\"\",\"_id\":\"123\",\"_score\":1.0}," +
                 "                       \"rating\":5}," +

modules/rank-eval/src/test/resources/rest-api-spec/test/rank_eval/10_basic.yml

@@ -71,8 +71,8 @@ setup:
           "metric" : { "precision": { "ignore_unlabeled" : true }}
         }
 
-  - match: { quality_level: 1}
-  - match: { details.amsterdam_query.quality_level: 1.0}
+  - match: { metric_score: 1}
+  - match: { details.amsterdam_query.metric_score: 1.0}
   - match: { details.amsterdam_query.unrated_docs:  [ {"_index": "foo", "_id": "doc4"}]}
   - match: { details.amsterdam_query.metric_details.precision: {"relevant_docs_retrieved": 2, "docs_retrieved": 2}}
   
@@ -84,7 +84,7 @@ setup:
   - match: { details.amsterdam_query.hits.2.hit._id:  "doc4"}
   - is_false: details.amsterdam_query.hits.2.rating
   
-  - match: { details.berlin_query.quality_level: 1.0}
+  - match: { details.berlin_query.metric_score: 1.0}
   - match: { details.berlin_query.unrated_docs:  [ {"_index": "foo", "_id": "doc4"}]}
   - match: { details.berlin_query.metric_details.precision: {"relevant_docs_retrieved": 1, "docs_retrieved": 1}}
   - length: { details.berlin_query.hits: 2}
@@ -118,9 +118,9 @@ setup:
           "metric" : { "precision": { "ignore_unlabeled" : true }}
         }
 
-  - match: { quality_level: 1}
-  - match: { details.amsterdam_query.quality_level: 1.0}
-  - match: { details.berlin_query.quality_level: 1.0}
+  - match: { metric_score: 1}
+  - match: { details.amsterdam_query.metric_score: 1.0}
+  - match: { details.berlin_query.metric_score: 1.0}
 
 ---
 "Mean Reciprocal Rank":
@@ -150,14 +150,14 @@ setup:
         }
 
 # average is (1/3 + 1/2)/2 = 5/12 ~ 0.41666666666666663
-  - gt: {quality_level: 0.416}
-  - lt: {quality_level: 0.417}
-  - gt: {details.amsterdam_query.quality_level: 0.333}
-  - lt: {details.amsterdam_query.quality_level: 0.334}
+  - gt: {metric_score: 0.416}
+  - lt: {metric_score: 0.417}
+  - gt: {details.amsterdam_query.metric_score: 0.333}
+  - lt: {details.amsterdam_query.metric_score: 0.334}
   - match: {details.amsterdam_query.metric_details.mean_reciprocal_rank: {"first_relevant": 3}}
   - match: {details.amsterdam_query.unrated_docs:  [ {"_index": "foo", "_id": "doc2"},
                                                                {"_index": "foo", "_id": "doc3"} ]}
-  - match: {details.berlin_query.quality_level: 0.5}
+  - match: {details.berlin_query.metric_score: 0.5}
   - match: {details.berlin_query.metric_details.mean_reciprocal_rank: {"first_relevant": 2}}
   - match: {details.berlin_query.unrated_docs:  [ {"_index": "foo", "_id": "doc1"}]}
 

modules/rank-eval/src/test/resources/rest-api-spec/test/rank_eval/20_dcg.yml

@@ -69,10 +69,10 @@
           "metric" : { "dcg": {}}
         }
 
-  - gt: {quality_level: 13.848263 }
-  - lt: {quality_level: 13.848264 }
-  - gt: {details.dcg_query.quality_level: 13.848263}
-  - lt: {details.dcg_query.quality_level: 13.848264}
+  - gt: {metric_score: 13.848263 }
+  - lt: {metric_score: 13.848264 }
+  - gt: {details.dcg_query.metric_score: 13.848263}
+  - lt: {details.dcg_query.metric_score: 13.848264}
   - match: {details.dcg_query.unrated_docs: [ ]}
 
 # reverse the order in which the results are returned (less relevant docs first)
@@ -96,10 +96,10 @@
           "metric" : { "dcg": { }}
         }
 
-  - gt: {quality_level: 10.299674}
-  - lt: {quality_level: 10.299675}
-  - gt: {details.dcg_query_reverse.quality_level: 10.299674}
-  - lt: {details.dcg_query_reverse.quality_level: 10.299675}
+  - gt: {metric_score: 10.299674}
+  - lt: {metric_score: 10.299675}
+  - gt: {details.dcg_query_reverse.metric_score: 10.299674}
+  - lt: {details.dcg_query_reverse.metric_score: 10.299675}
   - match: {details.dcg_query_reverse.unrated_docs: [ ]}
 
 # if we mix both, we should get the average
@@ -134,11 +134,11 @@
           "metric" : { "dcg": { }}
         }
 
-  - gt: {quality_level: 12.073969}
-  - lt: {quality_level: 12.073970}
-  - gt: {details.dcg_query.quality_level: 13.848263}
-  - lt: {details.dcg_query.quality_level: 13.848264}
+  - gt: {metric_score: 12.073969}
+  - lt: {metric_score: 12.073970}
+  - gt: {details.dcg_query.metric_score: 13.848263}
+  - lt: {details.dcg_query.metric_score: 13.848264}
   - match: {details.dcg_query.unrated_docs: [ ]}
-  - gt: {details.dcg_query_reverse.quality_level: 10.299674}
-  - lt: {details.dcg_query_reverse.quality_level: 10.299675}
+  - gt: {details.dcg_query_reverse.metric_score: 10.299674}
+  - lt: {details.dcg_query_reverse.metric_score: 10.299675}
   - match: {details.dcg_query_reverse.unrated_docs: [ ]}

modules/rank-eval/src/test/resources/rest-api-spec/test/rank_eval/30_failures.yml

@@ -34,8 +34,8 @@
           "metric" : { "precision": { "ignore_unlabeled" : true }}
         }
 
-  - match: { quality_level: 1}
-  - match: { details.amsterdam_query.quality_level: 1.0}
+  - match: { metric_score: 1}
+  - match: { details.amsterdam_query.metric_score: 1.0}
   - match: { details.amsterdam_query.unrated_docs:  [ ]}
   - match: { details.amsterdam_query.metric_details.precision: {"relevant_docs_retrieved": 1, "docs_retrieved": 1}}
 

modules/rank-eval/src/test/resources/rest-api-spec/test/rank_eval/40_rank_eval_templated.yml

@@ -84,7 +84,7 @@ setup:
           "metric" : { "precision": { }}
         }
 
-  - match: {quality_level: 0.9}
+  - match: {metric_score: 0.9}
   - match: {details.amsterdam_query.unrated_docs.0._id:  "6"}
 
 ---

plugins/analysis-phonetic/src/test/resources/org/elasticsearch/index/analysis/phonetic-1.yml

@@ -3,7 +3,7 @@ index:
     filter:
       doublemetaphonefilter:
         type: phonetic
-        encoder: doublemetaphone
+        encoder: double_metaphone
       metaphonefilter:
         type: phonetic
         encoder: metaphone
@@ -12,16 +12,16 @@ index:
         encoder: soundex
       refinedsoundexfilter:
         type: phonetic
-        encoder: refinedsoundex
+        encoder: refined_soundex
       caverphonefilter:
         type: phonetic
         encoder: caverphone
       beidermorsefilter:
         type: phonetic
-        encoder: beidermorse
+        encoder: beider_morse
       beidermorsefilterfrench:
         type: phonetic
-        encoder: beidermorse
+        encoder: beider_morse
         languageset : [ "french" ]
       koelnerphonetikfilter:
         type: phonetic

plugins/discovery-gce/build.gradle

@@ -22,36 +22,6 @@ dependencies {
   compile "commons-codec:commons-codec:${versions.commonscodec}"
 }
 
-
-// needed to be consistent with ssl host checking
-String host = InetAddress.getLoopbackAddress().getHostAddress();
-
-// location of keystore and files to generate it
-File keystore = new File(project.buildDir, 'keystore/test-node.jks')
-
-// generate the keystore
-task createKey(type: LoggedExec) {
-  doFirst {
-    project.delete(keystore.parentFile)
-    keystore.parentFile.mkdirs()
-  }
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  standardInput = new ByteArrayInputStream('FirstName LastName\nUnit\nOrganization\nCity\nState\nNL\nyes\n\n'.getBytes('UTF-8'))
-  args '-genkey',
-          '-alias', 'test-node',
-          '-keystore', keystore,
-          '-keyalg', 'RSA',
-          '-keysize', '2048',
-          '-validity', '712',
-          '-dname', 'CN=' + host,
-          '-keypass', 'keypass',
-          '-storepass', 'keypass'
-}
-
-// add keystore to test classpath: it expects it there
-sourceSets.test.resources.srcDir(keystore.parentFile)
-processTestResources.dependsOn(createKey)
-
 dependencyLicenses {
   mapping from: /google-.*/, to: 'google'
 }

plugins/repository-hdfs/build.gradle

@@ -1,4 +1,4 @@
-1/*
+/*
  * Licensed to Elasticsearch under one or more contributor
  * license agreements. See the NOTICE file distributed with
  * this work for additional information regarding copyright
@@ -214,25 +214,6 @@ RestIntegTestTask integTestSecureHa = project.tasks.create('integTestSecureHa',
   description = "Runs rest tests against an elasticsearch cluster with HDFS configured with HA Namenode and secured by MIT Kerberos."
 }
 
-if (rootProject.ext.compilerJavaVersion.isJava11()) {
-  // TODO remove when: https://github.com/elastic/elasticsearch/issues/31498
-  integTestRunner {
-    systemProperty 'tests.rest.blacklist', [
-            'hdfs_repository/30_snapshot/take snapshot',
-            'hdfs_repository/40_restore/Create a snapshot and then restore it',
-            'hdfs_repository/20_repository_verify/HDFS Repository Verify',
-            'hdfs_repository/30_snapshot_get/Get a snapshot',
-            'hdfs_repository/20_repository_create/HDFS Repository Creation',
-            'hdfs_repository/20_repository_delete/HDFS Delete Repository',
-            'hdfs_repository/30_snapshot_readonly/Get a snapshot - readonly',
-    ].join(',')
-  }
-}
-if (rootProject.ext.runtimeJavaVersion.isJava11() || rootProject.ext.compilerJavaVersion.isJava11()) {
-  // TODO remove when: https://github.com/elastic/elasticsearch/issues/31498
-  integTestHa.enabled = false
-}
-
 // Determine HDFS Fixture compatibility for the current build environment.
 boolean fixtureSupported = false
 if (Os.isFamily(Os.FAMILY_WINDOWS)) {

plugins/repository-hdfs/src/main/plugin-metadata/plugin-security.policy

@@ -61,6 +61,7 @@ grant {
 
   // Hadoop depends on OS level user information for simple authentication
   // Unix: UnixLoginModule: com.sun.security.auth.module.UnixSystem.UnixSystem init
+  permission java.lang.RuntimePermission "loadLibrary.jaas";
   permission java.lang.RuntimePermission "loadLibrary.jaas_unix";
   // Windows: NTLoginModule: com.sun.security.auth.module.NTSystem.loadNative
   permission java.lang.RuntimePermission "loadLibrary.jaas_nt";

plugins/repository-s3/build.gradle

@@ -114,9 +114,7 @@ if (!s3PermanentAccessKey && !s3PermanentSecretKey && !s3PermanentBucket && !s3P
 
   useFixture = true
 
-} else if (!s3PermanentAccessKey || !s3PermanentSecretKey || !s3PermanentBucket || !s3PermanentBasePath
-        || !s3EC2Bucket || !s3EC2BasePath
-        || !s3ECSBucket || !s3ECSBasePath) {
+} else if (!s3PermanentAccessKey || !s3PermanentSecretKey || !s3PermanentBucket || !s3PermanentBasePath) {
   throw new IllegalArgumentException("not all options specified to run against external S3 service")
 }
 
@@ -349,8 +347,13 @@ processTestResources {
 
 project.afterEvaluate {
   if (useFixture == false) {
-    // 30_repository_temporary_credentials is not ready for CI yet
-    integTestRunner.systemProperty 'tests.rest.blacklist', 'repository_s3/30_repository_temporary_credentials/*'
+    // temporary_credentials, ec2_credentials and ecs_credentials are not ready for third-party-tests yet
+    integTestRunner.systemProperty 'tests.rest.blacklist',
+            [
+                'repository_s3/30_repository_temporary_credentials/*',
+                'repository_s3/40_repository_ec2_credentials/*',
+                'repository_s3/50_repository_ecs_credentials/*'
+            ].join(",")
   }
 }
 

qa/vagrant/src/main/java/org/elasticsearch/packaging/test/ArchiveTestCase.java

@@ -129,7 +129,7 @@ public abstract class ArchiveTestCase extends PackagingTestCase {
         });
 
         Platforms.onLinux(() -> {
-            final String javaPath = sh.run("which java").stdout.trim();
+            final String javaPath = sh.run("command -v java").stdout.trim();
 
             try {
                 sh.run("chmod -x '" + javaPath + "'");

qa/vagrant/src/main/java/org/elasticsearch/packaging/test/PackageTestCase.java

@@ -30,16 +30,20 @@ import org.junit.BeforeClass;
 
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import static org.elasticsearch.packaging.util.Cleanup.cleanEverything;
 import static org.elasticsearch.packaging.util.FileUtils.assertPathsDontExist;
+import static org.elasticsearch.packaging.util.FileUtils.mv;
 import static org.elasticsearch.packaging.util.Packages.SYSTEMD_SERVICE;
 import static org.elasticsearch.packaging.util.Packages.assertInstalled;
 import static org.elasticsearch.packaging.util.Packages.assertRemoved;
 import static org.elasticsearch.packaging.util.Packages.install;
 import static org.elasticsearch.packaging.util.Packages.remove;
+import static org.elasticsearch.packaging.util.Packages.runInstallCommand;
 import static org.elasticsearch.packaging.util.Packages.startElasticsearch;
 import static org.elasticsearch.packaging.util.Packages.verifyPackageInstallation;
 import static org.elasticsearch.packaging.util.Platforms.getOsRelease;
@@ -75,6 +79,21 @@ public abstract class PackageTestCase extends PackagingTestCase {
         assumeTrue("only compatible distributions", distribution().packaging.compatible);
     }
 
+    public void test05InstallFailsWhenJavaMissing() {
+        final Shell sh = new Shell();
+        final Result java = sh.run("command -v java");
+
+        final Path originalJavaPath = Paths.get(java.stdout.trim());
+        final Path relocatedJavaPath = originalJavaPath.getParent().resolve("java.relocated");
+        try {
+            mv(originalJavaPath, relocatedJavaPath);
+            final Result installResult = runInstallCommand(distribution());
+            assertThat(installResult.exitCode, is(1));
+        } finally {
+            mv(relocatedJavaPath, originalJavaPath);
+        }
+    }
+
     public void test10InstallPackage() {
         assertRemoved(distribution());
         installation = install(distribution());

qa/vagrant/src/main/java/org/elasticsearch/packaging/util/Packages.java

@@ -67,7 +67,10 @@ public class Packages {
         Platforms.onDPKG(() -> {
             assertThat(status.exitCode, anyOf(is(0), is(1)));
             if (status.exitCode == 0) {
-                assertTrue(Pattern.compile("(?m)^Status:.+deinstall ok").matcher(status.stdout).find());
+                assertTrue("an uninstalled status should be indicated: " + status.stdout,
+                    Pattern.compile("(?m)^Status:.+deinstall ok").matcher(status.stdout).find() ||
+                    Pattern.compile("(?m)^Status:.+ok not-installed").matcher(status.stdout).find()
+                );
             }
         });
     }
@@ -90,13 +93,27 @@ public class Packages {
     }
 
     public static Installation install(Distribution distribution, String version) {
+        final Result result = runInstallCommand(distribution, version);
+        if (result.exitCode != 0) {
+            throw new RuntimeException("Installing distribution " + distribution + " version " + version + " failed: " + result);
+        }
+
+        return Installation.ofPackage(distribution.packaging);
+    }
+
+    public static Result runInstallCommand(Distribution distribution) {
+        return runInstallCommand(distribution, getCurrentVersion());
+    }
+
+    public static Result runInstallCommand(Distribution distribution, String version) {
         final Shell sh = new Shell();
         final Path distributionFile = getDistributionFile(distribution, version);
 
-        Platforms.onRPM(() -> sh.run("rpm -i " + distributionFile));
-        Platforms.onDPKG(() -> sh.run("dpkg -i " + distributionFile));
-
-        return Installation.ofPackage(distribution.packaging);
+        if (Platforms.isRPM()) {
+            return sh.runIgnoreExitCode("rpm -i " + distributionFile);
+        } else {
+            return sh.runIgnoreExitCode("dpkg -i " + distributionFile);
+        }
     }
 
     public static void remove(Distribution distribution) {

rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/260_weighted_avg.yml

@@ -0,0 +1,74 @@
+setup:
+  - skip:
+      version: " - 6.3.99"
+      reason: weighted_avg is only available as of 6.4.0
+  - do:
+      indices.create:
+          index: test_1
+          body:
+            settings:
+              number_of_replicas: 0
+            mappings:
+              doc:
+                properties:
+                  int_field:
+                     type : integer
+                  double_field:
+                     type : double
+                  string_field:
+                     type: keyword
+
+  - do:
+       bulk:
+         refresh: true
+         body:
+           - index:
+               _index: test_1
+               _type:  doc
+               _id:    1
+           - int_field: 1
+             double_field: 1.0
+           - index:
+               _index: test_1
+               _type:  doc
+               _id:    2
+           - int_field: 2
+             double_field: 2.0
+           - index:
+               _index: test_1
+               _type:  doc
+               _id:    3
+           - int_field: 3
+             double_field: 3.0
+           - index:
+               _index: test_1
+               _type:  doc
+               _id:    4
+           - int_field: 4
+             double_field: 4.0
+
+---
+"Basic test":
+
+  - do:
+      search:
+        body:
+          aggs:
+            the_int_avg:
+              weighted_avg:
+                value:
+                  field: "int_field"
+                weight:
+                  field: "int_field"
+            the_double_avg:
+              weighted_avg:
+                value:
+                  field: "double_field"
+                weight:
+                  field: "double_field"
+
+  - match: { hits.total: 4 }
+  - length: { hits.hits: 4 }
+  - match: { aggregations.the_int_avg.value: 3.0 }
+  - match: { aggregations.the_double_avg.value: 3.0 }
+

server/src/main/java/org/elasticsearch/index/shard/IndexShard.java

@@ -917,6 +917,7 @@ public class IndexShard extends AbstractIndexShardComponent implements IndicesCl
         try {
             return store.stats();
         } catch (IOException e) {
+            failShard("Failing shard because of exception during storeStats", e);
             throw new ElasticsearchException("io exception while building 'store stats'", e);
         }
     }

server/src/main/java/org/elasticsearch/search/SearchModule.java

@@ -181,6 +181,8 @@ import org.elasticsearch.search.aggregations.metrics.tophits.InternalTopHits;
 import org.elasticsearch.search.aggregations.metrics.tophits.TopHitsAggregationBuilder;
 import org.elasticsearch.search.aggregations.metrics.valuecount.InternalValueCount;
 import org.elasticsearch.search.aggregations.metrics.valuecount.ValueCountAggregationBuilder;
+import org.elasticsearch.search.aggregations.metrics.weighted_avg.InternalWeightedAvg;
+import org.elasticsearch.search.aggregations.metrics.weighted_avg.WeightedAvgAggregationBuilder;
 import org.elasticsearch.search.aggregations.pipeline.InternalSimpleValue;
 import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
 import org.elasticsearch.search.aggregations.pipeline.bucketmetrics.InternalBucketMetricValue;
@@ -335,6 +337,8 @@ public class SearchModule {
     private void registerAggregations(List<SearchPlugin> plugins) {
         registerAggregation(new AggregationSpec(AvgAggregationBuilder.NAME, AvgAggregationBuilder::new, AvgAggregationBuilder::parse)
                 .addResultReader(InternalAvg::new));
+        registerAggregation(new AggregationSpec(WeightedAvgAggregationBuilder.NAME, WeightedAvgAggregationBuilder::new,
+            WeightedAvgAggregationBuilder::parse).addResultReader(InternalWeightedAvg::new));
         registerAggregation(new AggregationSpec(SumAggregationBuilder.NAME, SumAggregationBuilder::new, SumAggregationBuilder::parse)
                 .addResultReader(InternalSum::new));
         registerAggregation(new AggregationSpec(MinAggregationBuilder.NAME, MinAggregationBuilder::new, MinAggregationBuilder::parse)

server/src/main/java/org/elasticsearch/search/aggregations/AggregationBuilders.java

@@ -82,6 +82,7 @@ import org.elasticsearch.search.aggregations.metrics.tophits.TopHits;
 import org.elasticsearch.search.aggregations.metrics.tophits.TopHitsAggregationBuilder;
 import org.elasticsearch.search.aggregations.metrics.valuecount.ValueCount;
 import org.elasticsearch.search.aggregations.metrics.valuecount.ValueCountAggregationBuilder;
+import org.elasticsearch.search.aggregations.metrics.weighted_avg.WeightedAvgAggregationBuilder;
 
 import java.util.Map;
 
@@ -107,6 +108,13 @@ public class AggregationBuilders {
         return new AvgAggregationBuilder(name);
     }
 
+    /**
+     * Create a new {@link Avg} aggregation with the given name.
+     */
+    public static WeightedAvgAggregationBuilder weightedAvg(String name) {
+        return new WeightedAvgAggregationBuilder(name);
+    }
+
     /**
      * Create a new {@link Max} aggregation with the given name.
      */

server/src/main/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/InternalWeightedAvg.java

@@ -0,0 +1,144 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.elasticsearch.common.io.stream.StreamInput;
+import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.elasticsearch.search.DocValueFormat;
+import org.elasticsearch.search.aggregations.InternalAggregation;
+import org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation;
+import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+public class InternalWeightedAvg extends InternalNumericMetricsAggregation.SingleValue implements WeightedAvg {
+    private final double sum;
+    private final double weight;
+
+    public InternalWeightedAvg(String name, double sum, double weight, DocValueFormat format, List<PipelineAggregator> pipelineAggregators,
+                               Map<String, Object> metaData) {
+        super(name, pipelineAggregators, metaData);
+        this.sum = sum;
+        this.weight = weight;
+        this.format = format;
+    }
+
+    /**
+     * Read from a stream.
+     */
+    public InternalWeightedAvg(StreamInput in) throws IOException {
+        super(in);
+        format = in.readNamedWriteable(DocValueFormat.class);
+        sum = in.readDouble();
+        weight = in.readDouble();
+    }
+
+    @Override
+    protected void doWriteTo(StreamOutput out) throws IOException {
+        out.writeNamedWriteable(format);
+        out.writeDouble(sum);
+        out.writeDouble(weight);
+    }
+
+    @Override
+    public double value() {
+        return getValue();
+    }
+
+    @Override
+    public double getValue() {
+        return sum / weight;
+    }
+
+    double getSum() {
+        return sum;
+    }
+
+    double getWeight() {
+        return weight;
+    }
+
+    DocValueFormat getFormatter() {
+        return format;
+    }
+
+    @Override
+    public String getWriteableName() {
+        return WeightedAvgAggregationBuilder.NAME;
+    }
+
+    @Override
+    public InternalWeightedAvg doReduce(List<InternalAggregation> aggregations, ReduceContext reduceContext) {
+        double weight = 0;
+        double sum = 0;
+        double sumCompensation = 0;
+        double weightCompensation = 0;
+        // Compute the sum of double values with Kahan summation algorithm which is more
+        // accurate than naive summation.
+        for (InternalAggregation aggregation : aggregations) {
+            InternalWeightedAvg avg = (InternalWeightedAvg) aggregation;
+            // If the weight is Inf or NaN, just add it to the running tally to "convert" to
+            // Inf/NaN.  This keeps the behavior bwc from before kahan summing
+            if (Double.isFinite(avg.weight) == false) {
+                weight += avg.weight;
+            } else if (Double.isFinite(weight)) {
+                double corrected = avg.weight - weightCompensation;
+                double newWeight = weight + corrected;
+                weightCompensation = (newWeight - weight) - corrected;
+                weight = newWeight;
+            }
+            // If the avg is Inf or NaN, just add it to the running tally to "convert" to
+            // Inf/NaN.  This keeps the behavior bwc from before kahan summing
+            if (Double.isFinite(avg.sum) == false) {
+                sum += avg.sum;
+            } else if (Double.isFinite(sum)) {
+                double corrected = avg.sum - sumCompensation;
+                double newSum = sum + corrected;
+                sumCompensation = (newSum - sum) - corrected;
+                sum = newSum;
+            }
+        }
+        return new InternalWeightedAvg(getName(), sum, weight, format, pipelineAggregators(), getMetaData());
+    }
+    @Override
+    public XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
+        builder.field(CommonFields.VALUE.getPreferredName(), weight != 0 ? getValue() : null);
+        if (weight != 0 && format != DocValueFormat.RAW) {
+            builder.field(CommonFields.VALUE_AS_STRING.getPreferredName(), format.format(getValue()));
+        }
+        return builder;
+    }
+
+    @Override
+    protected int doHashCode() {
+        return Objects.hash(sum, weight, format.getWriteableName());
+    }
+
+    @Override
+    protected boolean doEquals(Object obj) {
+        InternalWeightedAvg other = (InternalWeightedAvg) obj;
+        return Objects.equals(sum, other.sum) &&
+                Objects.equals(weight, other.weight) &&
+                Objects.equals(format.getWriteableName(), other.format.getWriteableName());
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/ParsedWeightedAvg.java

@@ -0,0 +1,65 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.elasticsearch.common.xcontent.ObjectParser;
+import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.search.aggregations.metrics.ParsedSingleValueNumericMetricsAggregation;
+
+import java.io.IOException;
+
+public class ParsedWeightedAvg extends ParsedSingleValueNumericMetricsAggregation implements WeightedAvg {
+
+    @Override
+    public double getValue() {
+        return value();
+    }
+
+    @Override
+    public String getType() {
+        return WeightedAvgAggregationBuilder.NAME;
+    }
+
+    @Override
+    protected XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
+        // InternalWeightedAvg renders value only if the avg normalizer (count) is not 0.
+        // We parse back `null` as Double.POSITIVE_INFINITY so we check for that value here to get the same xContent output
+        boolean hasValue = value != Double.POSITIVE_INFINITY;
+        builder.field(CommonFields.VALUE.getPreferredName(), hasValue ? value : null);
+        if (hasValue && valueAsString != null) {
+            builder.field(CommonFields.VALUE_AS_STRING.getPreferredName(), valueAsString);
+        }
+        return builder;
+    }
+
+    private static final ObjectParser<ParsedWeightedAvg, Void> PARSER
+        = new ObjectParser<>(ParsedWeightedAvg.class.getSimpleName(), true, ParsedWeightedAvg::new);
+
+    static {
+        declareSingleValueFields(PARSER, Double.POSITIVE_INFINITY);
+    }
+
+    public static ParsedWeightedAvg fromXContent(XContentParser parser, final String name) {
+        ParsedWeightedAvg avg = PARSER.apply(parser, null);
+        avg.setName(name);
+        return avg;
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/WeightedAvg.java

@@ -0,0 +1,32 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregation;
+
+/**
+ * An aggregation that computes the average of the values in the current bucket.
+ */
+public interface WeightedAvg extends NumericMetricsAggregation.SingleValue {
+
+    /**
+     * The average value.
+     */
+    double getValue();
+}

server/src/main/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/WeightedAvgAggregationBuilder.java

@@ -0,0 +1,128 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.io.stream.StreamInput;
+import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.common.xcontent.ObjectParser;
+import org.elasticsearch.common.xcontent.ToXContent;
+import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.search.DocValueFormat;
+import org.elasticsearch.search.aggregations.AggregationBuilder;
+import org.elasticsearch.search.aggregations.AggregatorFactories.Builder;
+import org.elasticsearch.search.aggregations.AggregatorFactory;
+import org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregationBuilder;
+import org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregatorFactory;
+import org.elasticsearch.search.aggregations.support.MultiValuesSourceFieldConfig;
+import org.elasticsearch.search.aggregations.support.MultiValuesSourceParseHelper;
+import org.elasticsearch.search.aggregations.support.ValueType;
+import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
+import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
+import org.elasticsearch.search.internal.SearchContext;
+
+import java.io.IOException;
+import java.util.Map;
+import java.util.Objects;
+
+public class WeightedAvgAggregationBuilder extends MultiValuesSourceAggregationBuilder.LeafOnly<Numeric, WeightedAvgAggregationBuilder> {
+    public static final String NAME = "weighted_avg";
+    public static final ParseField VALUE_FIELD = new ParseField("value");
+    public static final ParseField WEIGHT_FIELD = new ParseField("weight");
+
+    private static final ObjectParser<WeightedAvgAggregationBuilder, Void> PARSER;
+    static {
+        PARSER = new ObjectParser<>(WeightedAvgAggregationBuilder.NAME);
+        MultiValuesSourceParseHelper.declareCommon(PARSER, true, ValueType.NUMERIC);
+        MultiValuesSourceParseHelper.declareField(VALUE_FIELD.getPreferredName(), PARSER, true, false);
+        MultiValuesSourceParseHelper.declareField(WEIGHT_FIELD.getPreferredName(), PARSER, true, false);
+    }
+
+    public static AggregationBuilder parse(String aggregationName, XContentParser parser) throws IOException {
+        return PARSER.parse(parser, new WeightedAvgAggregationBuilder(aggregationName), null);
+    }
+
+    public WeightedAvgAggregationBuilder(String name) {
+        super(name, ValueType.NUMERIC);
+    }
+
+    public WeightedAvgAggregationBuilder(WeightedAvgAggregationBuilder clone, Builder factoriesBuilder, Map<String, Object> metaData) {
+        super(clone, factoriesBuilder, metaData);
+    }
+
+    public WeightedAvgAggregationBuilder value(MultiValuesSourceFieldConfig valueConfig) {
+        valueConfig = Objects.requireNonNull(valueConfig, "Configuration for field [" + VALUE_FIELD + "] cannot be null");
+        field(VALUE_FIELD.getPreferredName(), valueConfig);
+        return this;
+    }
+
+    public WeightedAvgAggregationBuilder weight(MultiValuesSourceFieldConfig weightConfig) {
+        weightConfig = Objects.requireNonNull(weightConfig, "Configuration for field [" + WEIGHT_FIELD + "] cannot be null");
+        field(WEIGHT_FIELD.getPreferredName(), weightConfig);
+        return this;
+    }
+
+    /**
+     * Read from a stream.
+     */
+    public WeightedAvgAggregationBuilder(StreamInput in) throws IOException {
+        super(in, ValueType.NUMERIC);
+    }
+
+    @Override
+    protected AggregationBuilder shallowCopy(Builder factoriesBuilder, Map<String, Object> metaData) {
+        return new WeightedAvgAggregationBuilder(this, factoriesBuilder, metaData);
+    }
+
+    @Override
+    protected void innerWriteTo(StreamOutput out) {
+        // Do nothing, no extra state to write to stream
+    }
+
+    @Override
+    protected MultiValuesSourceAggregatorFactory<Numeric, ?> innerBuild(SearchContext context,
+                                                                    Map<String, ValuesSourceConfig<Numeric>> configs,
+                                                                    DocValueFormat format,
+                                                                    AggregatorFactory<?> parent,
+                                                                    Builder subFactoriesBuilder) throws IOException {
+        return new WeightedAvgAggregatorFactory(name, configs, format, context, parent, subFactoriesBuilder, metaData);
+    }
+
+    @Override
+    public XContentBuilder doXContentBody(XContentBuilder builder, ToXContent.Params params) throws IOException {
+        return builder;
+    }
+
+    @Override
+    protected int innerHashCode() {
+        return 0;
+    }
+
+    @Override
+    protected boolean innerEquals(Object obj) {
+        return true;
+    }
+
+    @Override
+    public String getType() {
+        return NAME;
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/WeightedAvgAggregator.java

@@ -0,0 +1,158 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.apache.lucene.index.LeafReaderContext;
+import org.elasticsearch.common.lease.Releasables;
+import org.elasticsearch.common.util.BigArrays;
+import org.elasticsearch.common.util.DoubleArray;
+import org.elasticsearch.index.fielddata.SortedNumericDoubleValues;
+import org.elasticsearch.search.DocValueFormat;
+import org.elasticsearch.search.aggregations.AggregationExecutionException;
+import org.elasticsearch.search.aggregations.Aggregator;
+import org.elasticsearch.search.aggregations.InternalAggregation;
+import org.elasticsearch.search.aggregations.LeafBucketCollector;
+import org.elasticsearch.search.aggregations.LeafBucketCollectorBase;
+import org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator;
+import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
+import org.elasticsearch.search.aggregations.support.MultiValuesSource;
+import org.elasticsearch.search.internal.SearchContext;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+import static org.elasticsearch.search.aggregations.metrics.weighted_avg.WeightedAvgAggregationBuilder.VALUE_FIELD;
+import static org.elasticsearch.search.aggregations.metrics.weighted_avg.WeightedAvgAggregationBuilder.WEIGHT_FIELD;
+
+public class WeightedAvgAggregator extends NumericMetricsAggregator.SingleValue {
+
+    private final MultiValuesSource.NumericMultiValuesSource valuesSources;
+
+    private DoubleArray weights;
+    private DoubleArray sums;
+    private DoubleArray sumCompensations;
+    private DoubleArray weightCompensations;
+    private DocValueFormat format;
+
+    public WeightedAvgAggregator(String name, MultiValuesSource.NumericMultiValuesSource valuesSources, DocValueFormat format,
+                                 SearchContext context, Aggregator parent, List<PipelineAggregator> pipelineAggregators,
+                                 Map<String, Object> metaData) throws IOException {
+        super(name, context, parent, pipelineAggregators, metaData);
+        this.valuesSources = valuesSources;
+        this.format = format;
+        if (valuesSources != null) {
+            final BigArrays bigArrays = context.bigArrays();
+            weights = bigArrays.newDoubleArray(1, true);
+            sums = bigArrays.newDoubleArray(1, true);
+            sumCompensations = bigArrays.newDoubleArray(1, true);
+            weightCompensations = bigArrays.newDoubleArray(1, true);
+        }
+    }
+
+    @Override
+    public boolean needsScores() {
+        return valuesSources != null && valuesSources.needsScores();
+    }
+
+    @Override
+    public LeafBucketCollector getLeafCollector(LeafReaderContext ctx,
+            final LeafBucketCollector sub) throws IOException {
+        if (valuesSources == null) {
+            return LeafBucketCollector.NO_OP_COLLECTOR;
+        }
+        final BigArrays bigArrays = context.bigArrays();
+        final SortedNumericDoubleValues docValues = valuesSources.getField(VALUE_FIELD.getPreferredName(), ctx);
+        final SortedNumericDoubleValues docWeights = valuesSources.getField(WEIGHT_FIELD.getPreferredName(), ctx);
+
+        return new LeafBucketCollectorBase(sub, docValues) {
+            @Override
+            public void collect(int doc, long bucket) throws IOException {
+                weights = bigArrays.grow(weights, bucket + 1);
+                sums = bigArrays.grow(sums, bucket + 1);
+                sumCompensations = bigArrays.grow(sumCompensations, bucket + 1);
+                weightCompensations = bigArrays.grow(weightCompensations, bucket + 1);
+
+                if (docValues.advanceExact(doc) && docWeights.advanceExact(doc)) {
+                    if (docWeights.docValueCount() > 1) {
+                        throw new AggregationExecutionException("Encountered more than one weight for a " +
+                            "single document. Use a script to combine multiple weights-per-doc into a single value.");
+                    }
+                    // There should always be one weight if advanceExact lands us here, either
+                    // a real weight or a `missing` weight
+                    assert docWeights.docValueCount() == 1;
+                    final double weight = docWeights.nextValue();
+
+                    final int numValues = docValues.docValueCount();
+                    assert numValues > 0;
+
+                    for (int i = 0; i < numValues; i++) {
+                        kahanSum(docValues.nextValue() * weight, sums, sumCompensations, bucket);
+                        kahanSum(weight, weights, weightCompensations, bucket);
+                    }
+                }
+            }
+        };
+    }
+
+    private static void kahanSum(double value, DoubleArray values, DoubleArray compensations, long bucket) {
+        // Compute the sum of double values with Kahan summation algorithm which is more
+        // accurate than naive summation.
+        double sum = values.get(bucket);
+        double compensation = compensations.get(bucket);
+
+        if (Double.isFinite(value) == false) {
+            sum += value;
+        } else if (Double.isFinite(sum)) {
+            double corrected = value - compensation;
+            double newSum = sum + corrected;
+            compensation = (newSum - sum) - corrected;
+            sum = newSum;
+        }
+        values.set(bucket, sum);
+        compensations.set(bucket, compensation);
+    }
+
+    @Override
+    public double metric(long owningBucketOrd) {
+        if (valuesSources == null || owningBucketOrd >= sums.size()) {
+            return Double.NaN;
+        }
+        return sums.get(owningBucketOrd) / weights.get(owningBucketOrd);
+    }
+
+    @Override
+    public InternalAggregation buildAggregation(long bucket) {
+        if (valuesSources == null || bucket >= sums.size()) {
+            return buildEmptyAggregation();
+        }
+        return new InternalWeightedAvg(name, sums.get(bucket), weights.get(bucket), format, pipelineAggregators(), metaData());
+    }
+
+    @Override
+    public InternalAggregation buildEmptyAggregation() {
+        return new InternalWeightedAvg(name, 0.0, 0L, format, pipelineAggregators(), metaData());
+    }
+
+    @Override
+    public void doClose() {
+        Releasables.close(weights, sums, sumCompensations, weightCompensations);
+    }
+
+}

server/src/main/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/WeightedAvgAggregatorFactory.java

@@ -0,0 +1,64 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.elasticsearch.search.DocValueFormat;
+import org.elasticsearch.search.aggregations.Aggregator;
+import org.elasticsearch.search.aggregations.AggregatorFactories;
+import org.elasticsearch.search.aggregations.AggregatorFactory;
+import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
+import org.elasticsearch.search.aggregations.support.MultiValuesSource;
+import org.elasticsearch.search.aggregations.support.MultiValuesSourceAggregatorFactory;
+import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
+import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
+import org.elasticsearch.search.internal.SearchContext;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+public class WeightedAvgAggregatorFactory extends MultiValuesSourceAggregatorFactory<Numeric, WeightedAvgAggregatorFactory> {
+
+    public WeightedAvgAggregatorFactory(String name,  Map<String, ValuesSourceConfig<Numeric>> configs,
+                                        DocValueFormat format, SearchContext context, AggregatorFactory<?> parent,
+                                        AggregatorFactories.Builder subFactoriesBuilder,
+                                        Map<String, Object> metaData) throws IOException {
+        super(name, configs, format, context, parent, subFactoriesBuilder, metaData);
+    }
+
+    @Override
+    protected Aggregator createUnmapped(Aggregator parent, List<PipelineAggregator> pipelineAggregators, Map<String, Object> metaData)
+            throws IOException {
+        return new WeightedAvgAggregator(name, null, format, context, parent, pipelineAggregators, metaData);
+    }
+
+    @Override
+    protected Aggregator doCreateInternal(Map<String, ValuesSourceConfig<Numeric>> configs, DocValueFormat format,
+                                          Aggregator parent, boolean collectsFromSingleBucket,
+                                          List<PipelineAggregator> pipelineAggregators,
+                                          Map<String, Object> metaData) throws IOException {
+        MultiValuesSource.NumericMultiValuesSource numericMultiVS
+            = new MultiValuesSource.NumericMultiValuesSource(configs, context.getQueryShardContext());
+        if (numericMultiVS.areValuesSourcesEmpty()) {
+            return createUnmapped(parent, pipelineAggregators, metaData);
+        }
+        return new WeightedAvgAggregator(name, numericMultiVS, format, context, parent, pipelineAggregators, metaData);
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/support/MultiValuesSource.java

@@ -0,0 +1,93 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.search.aggregations.support;
+
+import org.apache.lucene.index.LeafReaderContext;
+import org.elasticsearch.index.fielddata.SortedNumericDoubleValues;
+import org.elasticsearch.index.query.QueryShardContext;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * Class to encapsulate a set of ValuesSource objects labeled by field name
+ */
+public abstract class MultiValuesSource <VS extends ValuesSource> {
+    protected Map<String, VS> values;
+
+    public static class NumericMultiValuesSource extends MultiValuesSource<ValuesSource.Numeric> {
+        public NumericMultiValuesSource(Map<String, ValuesSourceConfig<ValuesSource.Numeric>> valuesSourceConfigs,
+                                        QueryShardContext context) throws IOException {
+            values = new HashMap<>(valuesSourceConfigs.size());
+            for (Map.Entry<String, ValuesSourceConfig<ValuesSource.Numeric>> entry : valuesSourceConfigs.entrySet()) {
+                values.put(entry.getKey(), entry.getValue().toValuesSource(context));
+            }
+        }
+
+        public SortedNumericDoubleValues getField(String fieldName, LeafReaderContext ctx) throws IOException {
+            ValuesSource.Numeric value = values.get(fieldName);
+            if (value == null) {
+                throw new IllegalArgumentException("Could not find field name [" + fieldName + "] in multiValuesSource");
+            }
+            return value.doubleValues(ctx);
+        }
+    }
+
+    public static class BytesMultiValuesSource extends MultiValuesSource<ValuesSource.Bytes> {
+        public BytesMultiValuesSource(Map<String, ValuesSourceConfig<ValuesSource.Bytes>> valuesSourceConfigs,
+                                      QueryShardContext context) throws IOException {
+            values = new HashMap<>(valuesSourceConfigs.size());
+            for (Map.Entry<String, ValuesSourceConfig<ValuesSource.Bytes>> entry : valuesSourceConfigs.entrySet()) {
+                values.put(entry.getKey(), entry.getValue().toValuesSource(context));
+            }
+        }
+
+        public Object getField(String fieldName, LeafReaderContext ctx) throws IOException {
+            ValuesSource.Bytes value = values.get(fieldName);
+            if (value == null) {
+                throw new IllegalArgumentException("Could not find field name [" + fieldName + "] in multiValuesSource");
+            }
+            return value.bytesValues(ctx);
+        }
+    }
+
+    public static class GeoPointValuesSource extends MultiValuesSource<ValuesSource.GeoPoint> {
+        public GeoPointValuesSource(Map<String, ValuesSourceConfig<ValuesSource.GeoPoint>> valuesSourceConfigs,
+                                    QueryShardContext context) throws IOException {
+            values = new HashMap<>(valuesSourceConfigs.size());
+            for (Map.Entry<String, ValuesSourceConfig<ValuesSource.GeoPoint>> entry : valuesSourceConfigs.entrySet()) {
+                values.put(entry.getKey(), entry.getValue().toValuesSource(context));
+            }
+        }
+    }
+
+    public boolean needsScores() {
+        return values.values().stream().anyMatch(ValuesSource::needsScores);
+    }
+
+    public String[] fieldNames() {
+        return values.keySet().toArray(new String[0]);
+    }
+
+    public boolean areValuesSourcesEmpty() {
+        return values.values().stream().allMatch(Objects::isNull);
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/support/MultiValuesSourceAggregationBuilder.java

@@ -0,0 +1,268 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.search.aggregations.support;
+
+import org.elasticsearch.common.Nullable;
+import org.elasticsearch.common.io.stream.StreamInput;
+import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.elasticsearch.search.DocValueFormat;
+import org.elasticsearch.search.aggregations.AbstractAggregationBuilder;
+import org.elasticsearch.search.aggregations.AggregationInitializationException;
+import org.elasticsearch.search.aggregations.AggregatorFactories;
+import org.elasticsearch.search.aggregations.AggregatorFactories.Builder;
+import org.elasticsearch.search.aggregations.AggregatorFactory;
+import org.elasticsearch.search.internal.SearchContext;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * Similar to {@link ValuesSourceAggregationBuilder}, except it references multiple ValuesSources (e.g. so that an aggregation
+ * can pull values from multiple fields).
+ *
+ * A limitation of this class is that all the ValuesSource's being refereenced must be of the same type.
+ */
+public abstract class MultiValuesSourceAggregationBuilder<VS extends ValuesSource, AB extends MultiValuesSourceAggregationBuilder<VS, AB>>
+        extends AbstractAggregationBuilder<AB> {
+
+
+    public abstract static class LeafOnly<VS extends ValuesSource, AB extends MultiValuesSourceAggregationBuilder<VS, AB>>
+            extends MultiValuesSourceAggregationBuilder<VS, AB> {
+
+        protected LeafOnly(String name, ValueType targetValueType) {
+            super(name, targetValueType);
+        }
+
+        protected LeafOnly(LeafOnly<VS, AB> clone, Builder factoriesBuilder, Map<String, Object> metaData) {
+            super(clone, factoriesBuilder, metaData);
+            if (factoriesBuilder.count() > 0) {
+                throw new AggregationInitializationException("Aggregator [" + name + "] of type ["
+                    + getType() + "] cannot accept sub-aggregations");
+            }
+        }
+
+        /**
+         * Read from a stream that does not serialize its targetValueType. This should be used by most subclasses.
+         */
+        protected LeafOnly(StreamInput in, ValueType targetValueType) throws IOException {
+            super(in, targetValueType);
+        }
+
+        @Override
+        public AB subAggregations(Builder subFactories) {
+            throw new AggregationInitializationException("Aggregator [" + name + "] of type [" +
+                getType() + "] cannot accept sub-aggregations");
+        }
+    }
+
+
+
+    private Map<String, MultiValuesSourceFieldConfig> fields = new HashMap<>();
+    private final ValueType targetValueType;
+    private ValueType valueType = null;
+    private String format = null;
+
+    protected MultiValuesSourceAggregationBuilder(String name, ValueType targetValueType) {
+        super(name);
+        this.targetValueType = targetValueType;
+    }
+
+    protected MultiValuesSourceAggregationBuilder(MultiValuesSourceAggregationBuilder<VS, AB> clone,
+                                                  Builder factoriesBuilder, Map<String, Object> metaData) {
+        super(clone, factoriesBuilder, metaData);
+
+        this.fields = new HashMap<>(clone.fields);
+        this.targetValueType = clone.targetValueType;
+        this.valueType = clone.valueType;
+        this.format = clone.format;
+    }
+
+    protected MultiValuesSourceAggregationBuilder(StreamInput in, ValueType targetValueType)
+        throws IOException {
+        super(in);
+        assert false == serializeTargetValueType() : "Wrong read constructor called for subclass that provides its targetValueType";
+        this.targetValueType = targetValueType;
+        read(in);
+    }
+
+    /**
+     * Read from a stream.
+     */
+    @SuppressWarnings("unchecked")
+    private void read(StreamInput in) throws IOException {
+        fields = in.readMap(StreamInput::readString, MultiValuesSourceFieldConfig::new);
+        valueType = in.readOptionalWriteable(ValueType::readFromStream);
+        format = in.readOptionalString();
+    }
+
+    @Override
+    protected final void doWriteTo(StreamOutput out) throws IOException {
+        if (serializeTargetValueType()) {
+            out.writeOptionalWriteable(targetValueType);
+        }
+        out.writeMap(fields, StreamOutput::writeString, (o, value) -> value.writeTo(o));
+        out.writeOptionalWriteable(valueType);
+        out.writeOptionalString(format);
+        innerWriteTo(out);
+    }
+
+    /**
+     * Write subclass' state to the stream
+     */
+    protected abstract void innerWriteTo(StreamOutput out) throws IOException;
+
+    @SuppressWarnings("unchecked")
+    protected AB field(String propertyName, MultiValuesSourceFieldConfig config) {
+        if (config == null) {
+            throw new IllegalArgumentException("[config] must not be null: [" + name + "]");
+        }
+        this.fields.put(propertyName, config);
+        return (AB) this;
+    }
+
+    public Map<String, MultiValuesSourceFieldConfig> fields() {
+        return fields;
+    }
+
+    /**
+     * Sets the {@link ValueType} for the value produced by this aggregation
+     */
+    @SuppressWarnings("unchecked")
+    public AB valueType(ValueType valueType) {
+        if (valueType == null) {
+            throw new IllegalArgumentException("[valueType] must not be null: [" + name + "]");
+        }
+        this.valueType = valueType;
+        return (AB) this;
+    }
+
+    /**
+     * Gets the {@link ValueType} for the value produced by this aggregation
+     */
+    public ValueType valueType() {
+        return valueType;
+    }
+
+    /**
+     * Sets the format to use for the output of the aggregation.
+     */
+    @SuppressWarnings("unchecked")
+    public AB format(String format) {
+        if (format == null) {
+            throw new IllegalArgumentException("[format] must not be null: [" + name + "]");
+        }
+        this.format = format;
+        return (AB) this;
+    }
+
+    /**
+     * Gets the format to use for the output of the aggregation.
+     */
+    public String format() {
+        return format;
+    }
+
+    @Override
+    protected final MultiValuesSourceAggregatorFactory<VS, ?> doBuild(SearchContext context, AggregatorFactory<?> parent,
+            AggregatorFactories.Builder subFactoriesBuilder) throws IOException {
+        ValueType finalValueType = this.valueType != null ? this.valueType : targetValueType;
+
+        Map<String, ValuesSourceConfig<VS>> configs = new HashMap<>(fields.size());
+        fields.forEach((key, value) -> {
+            ValuesSourceConfig<VS> config = ValuesSourceConfig.resolve(context.getQueryShardContext(), finalValueType,
+                value.getFieldName(), value.getScript(), value.getMissing(), value.getTimeZone(), format);
+            configs.put(key, config);
+        });
+        DocValueFormat docValueFormat = resolveFormat(format, finalValueType);
+        return innerBuild(context, configs, docValueFormat, parent, subFactoriesBuilder);
+    }
+
+
+    private static DocValueFormat resolveFormat(@Nullable String format, @Nullable ValueType valueType) {
+        if (valueType == null) {
+            return DocValueFormat.RAW; // we can't figure it out
+        }
+        DocValueFormat valueFormat = valueType.defaultFormat;
+        if (valueFormat instanceof DocValueFormat.Decimal && format != null) {
+            valueFormat = new DocValueFormat.Decimal(format);
+        }
+        return valueFormat;
+    }
+
+    protected abstract MultiValuesSourceAggregatorFactory<VS, ?> innerBuild(SearchContext context,
+        Map<String, ValuesSourceConfig<VS>> configs, DocValueFormat format, AggregatorFactory<?> parent,
+        AggregatorFactories.Builder subFactoriesBuilder) throws IOException;
+
+
+    /**
+     * Should this builder serialize its targetValueType? Defaults to false. All subclasses that override this to true
+     * should use the three argument read constructor rather than the four argument version.
+     */
+    protected boolean serializeTargetValueType() {
+        return false;
+    }
+
+    @Override
+    public final XContentBuilder internalXContent(XContentBuilder builder, Params params) throws IOException {
+        builder.startObject();
+        if (fields != null) {
+            builder.field(CommonFields.FIELDS.getPreferredName(), fields);
+        }
+        if (format != null) {
+            builder.field(CommonFields.FORMAT.getPreferredName(), format);
+        }
+        if (valueType != null) {
+            builder.field(CommonFields.VALUE_TYPE.getPreferredName(), valueType.getPreferredName());
+        }
+        doXContentBody(builder, params);
+        builder.endObject();
+        return builder;
+    }
+
+    protected abstract XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException;
+
+    @Override
+    protected final int doHashCode() {
+        return Objects.hash(fields, format, targetValueType, valueType, innerHashCode());
+    }
+
+    protected abstract int innerHashCode();
+
+    @Override
+    protected final boolean doEquals(Object other) {
+        if (this == other) {
+            return true;
+        }
+
+        if (other == null || getClass() != other.getClass()) {
+            return false;
+        }
+
+        MultiValuesSourceAggregationBuilder that = (MultiValuesSourceAggregationBuilder) other;
+
+        return Objects.equals(this.fields, that.fields)
+            && Objects.equals(this.format, that.format)
+            && Objects.equals(this.valueType, that.valueType);
+    }
+
+    protected abstract boolean innerEquals(Object obj);
+}

server/src/main/java/org/elasticsearch/search/aggregations/support/MultiValuesSourceAggregatorFactory.java

@@ -0,0 +1,64 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.support;
+
+import org.elasticsearch.search.DocValueFormat;
+import org.elasticsearch.search.aggregations.Aggregator;
+import org.elasticsearch.search.aggregations.AggregatorFactories;
+import org.elasticsearch.search.aggregations.AggregatorFactory;
+import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
+import org.elasticsearch.search.internal.SearchContext;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+public abstract class MultiValuesSourceAggregatorFactory<VS extends ValuesSource, AF extends MultiValuesSourceAggregatorFactory<VS, AF>>
+        extends AggregatorFactory<AF> {
+
+    protected final Map<String, ValuesSourceConfig<VS>> configs;
+    protected final DocValueFormat format;
+
+    public MultiValuesSourceAggregatorFactory(String name, Map<String, ValuesSourceConfig<VS>> configs,
+                                              DocValueFormat format, SearchContext context,
+                                              AggregatorFactory<?> parent, AggregatorFactories.Builder subFactoriesBuilder,
+                                              Map<String, Object> metaData) throws IOException {
+        super(name, context, parent, subFactoriesBuilder, metaData);
+        this.configs = configs;
+        this.format = format;
+    }
+
+    @Override
+    public Aggregator createInternal(Aggregator parent, boolean collectsFromSingleBucket, List<PipelineAggregator> pipelineAggregators,
+                                     Map<String, Object> metaData) throws IOException {
+
+        return doCreateInternal(configs, format, parent, collectsFromSingleBucket,
+            pipelineAggregators, metaData);
+    }
+
+    protected abstract Aggregator createUnmapped(Aggregator parent, List<PipelineAggregator> pipelineAggregators,
+                                                 Map<String, Object> metaData) throws IOException;
+
+    protected abstract Aggregator doCreateInternal(Map<String, ValuesSourceConfig<VS>> configs,
+                                                   DocValueFormat format, Aggregator parent, boolean collectsFromSingleBucket,
+                                                   List<PipelineAggregator> pipelineAggregators,
+                                                   Map<String, Object> metaData) throws IOException;
+
+}

server/src/main/java/org/elasticsearch/search/aggregations/support/MultiValuesSourceFieldConfig.java

@@ -0,0 +1,186 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.support;
+
+import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.Strings;
+import org.elasticsearch.common.io.stream.StreamInput;
+import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.common.io.stream.Writeable;
+import org.elasticsearch.common.xcontent.ObjectParser;
+import org.elasticsearch.common.xcontent.ToXContentFragment;
+import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.script.Script;
+import org.joda.time.DateTimeZone;
+
+import java.io.IOException;
+import java.util.function.BiFunction;
+
+public class MultiValuesSourceFieldConfig implements Writeable, ToXContentFragment {
+    private String fieldName;
+    private Object missing;
+    private Script script;
+    private DateTimeZone timeZone;
+
+    private static final String NAME = "field_config";
+
+    public static final BiFunction<Boolean, Boolean, ObjectParser<MultiValuesSourceFieldConfig.Builder, Void>> PARSER
+        = (scriptable, timezoneAware) -> {
+
+        ObjectParser<MultiValuesSourceFieldConfig.Builder, Void> parser
+            = new ObjectParser<>(MultiValuesSourceFieldConfig.NAME, MultiValuesSourceFieldConfig.Builder::new);
+
+        parser.declareString(MultiValuesSourceFieldConfig.Builder::setFieldName, ParseField.CommonFields.FIELD);
+        parser.declareField(MultiValuesSourceFieldConfig.Builder::setMissing, XContentParser::objectText,
+            ParseField.CommonFields.MISSING, ObjectParser.ValueType.VALUE);
+
+        if (scriptable) {
+            parser.declareField(MultiValuesSourceFieldConfig.Builder::setScript,
+                (p, context) -> Script.parse(p),
+                Script.SCRIPT_PARSE_FIELD, ObjectParser.ValueType.OBJECT_OR_STRING);
+        }
+
+        if (timezoneAware) {
+            parser.declareField(MultiValuesSourceFieldConfig.Builder::setTimeZone, p -> {
+                if (p.currentToken() == XContentParser.Token.VALUE_STRING) {
+                    return DateTimeZone.forID(p.text());
+                } else {
+                    return DateTimeZone.forOffsetHours(p.intValue());
+                }
+            }, ParseField.CommonFields.TIME_ZONE, ObjectParser.ValueType.LONG);
+        }
+        return parser;
+    };
+
+    private MultiValuesSourceFieldConfig(String fieldName, Object missing, Script script, DateTimeZone timeZone) {
+        this.fieldName = fieldName;
+        this.missing = missing;
+        this.script = script;
+        this.timeZone = timeZone;
+    }
+
+    public MultiValuesSourceFieldConfig(StreamInput in) throws IOException {
+        this.fieldName = in.readString();
+        this.missing = in.readGenericValue();
+        this.script = in.readOptionalWriteable(Script::new);
+        this.timeZone = in.readOptionalTimeZone();
+    }
+
+    public Object getMissing() {
+        return missing;
+    }
+
+    public Script getScript() {
+        return script;
+    }
+
+    public DateTimeZone getTimeZone() {
+        return timeZone;
+    }
+
+    public String getFieldName() {
+        return fieldName;
+    }
+
+    @Override
+    public void writeTo(StreamOutput out) throws IOException {
+        out.writeString(fieldName);
+        out.writeGenericValue(missing);
+        out.writeOptionalWriteable(script);
+        out.writeOptionalTimeZone(timeZone);
+    }
+
+    @Override
+    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
+        if (missing != null) {
+            builder.field(ParseField.CommonFields.MISSING.getPreferredName(), missing);
+        }
+        if (script != null) {
+            builder.field(Script.SCRIPT_PARSE_FIELD.getPreferredName(), script);
+        }
+        if (fieldName != null) {
+            builder.field(ParseField.CommonFields.FIELD.getPreferredName(), fieldName);
+        }
+        if (timeZone != null) {
+            builder.field(ParseField.CommonFields.TIME_ZONE.getPreferredName(), timeZone);
+        }
+        return builder;
+    }
+
+    public static class Builder {
+        private String fieldName;
+        private Object missing = null;
+        private Script script = null;
+        private DateTimeZone timeZone = null;
+
+        public String getFieldName() {
+            return fieldName;
+        }
+
+        public Builder setFieldName(String fieldName) {
+            this.fieldName = fieldName;
+            return this;
+        }
+
+        public Object getMissing() {
+            return missing;
+        }
+
+        public Builder setMissing(Object missing) {
+            this.missing = missing;
+            return this;
+        }
+
+        public Script getScript() {
+            return script;
+        }
+
+        public Builder setScript(Script script) {
+            this.script = script;
+            return this;
+        }
+
+        public DateTimeZone getTimeZone() {
+            return timeZone;
+        }
+
+        public Builder setTimeZone(DateTimeZone timeZone) {
+            this.timeZone = timeZone;
+            return this;
+        }
+
+        public MultiValuesSourceFieldConfig build() {
+            if (Strings.isNullOrEmpty(fieldName) && script == null) {
+                throw new IllegalArgumentException("[" +  ParseField.CommonFields.FIELD.getPreferredName()
+                    + "] and [" + Script.SCRIPT_PARSE_FIELD.getPreferredName() + "] cannot both be null.  " +
+                    "Please specify one or the other.");
+            }
+
+            if (Strings.isNullOrEmpty(fieldName) == false && script != null) {
+                throw new IllegalArgumentException("[" +  ParseField.CommonFields.FIELD.getPreferredName()
+                    + "] and [" + Script.SCRIPT_PARSE_FIELD.getPreferredName() + "] cannot both be configured.  " +
+                    "Please specify one or the other.");
+            }
+
+            return new MultiValuesSourceFieldConfig(fieldName, missing, script, timeZone);
+        }
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/support/MultiValuesSourceParseHelper.java

@@ -0,0 +1,59 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.support;
+
+import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.ParsingException;
+import org.elasticsearch.common.xcontent.AbstractObjectParser;
+import org.elasticsearch.common.xcontent.ObjectParser;
+import org.elasticsearch.common.xcontent.XContentParser;
+
+public final class MultiValuesSourceParseHelper {
+
+    public static <VS extends ValuesSource, T> void declareCommon(
+        AbstractObjectParser<? extends MultiValuesSourceAggregationBuilder<VS, ?>, T> objectParser, boolean formattable,
+        ValueType targetValueType) {
+
+        objectParser.declareField(MultiValuesSourceAggregationBuilder::valueType, p -> {
+            ValueType valueType = ValueType.resolveForScript(p.text());
+            if (targetValueType != null && valueType.isNotA(targetValueType)) {
+                throw new ParsingException(p.getTokenLocation(),
+                    "Aggregation [" + objectParser.getName() + "] was configured with an incompatible value type ["
+                        + valueType + "]. It can only work on value of type ["
+                        + targetValueType + "]");
+            }
+            return valueType;
+        }, ValueType.VALUE_TYPE, ObjectParser.ValueType.STRING);
+
+        if (formattable) {
+            objectParser.declareField(MultiValuesSourceAggregationBuilder::format, XContentParser::text,
+                ParseField.CommonFields.FORMAT, ObjectParser.ValueType.STRING);
+        }
+    }
+
+    public static <VS extends ValuesSource, T> void declareField(String fieldName,
+        AbstractObjectParser<? extends MultiValuesSourceAggregationBuilder<VS, ?>, T> objectParser,
+        boolean scriptable, boolean timezoneAware) {
+
+        objectParser.declareField((o, fieldConfig) -> o.field(fieldName, fieldConfig.build()),
+            (p, c) -> MultiValuesSourceFieldConfig.PARSER.apply(scriptable, timezoneAware).parse(p, null),
+            new ParseField(fieldName), ObjectParser.ValueType.OBJECT);
+    }
+}

server/src/main/java/org/elasticsearch/search/aggregations/support/ValueType.java

@@ -19,6 +19,7 @@
 
 package org.elasticsearch.search.aggregations.support;
 
+import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
@@ -95,6 +96,8 @@ public enum ValueType implements Writeable {
     private final byte id;
     private String preferredName;
 
+    public static final ParseField VALUE_TYPE = new ParseField("value_type", "valueType");
+
     ValueType(byte id, String description, String preferredName, ValuesSourceType valuesSourceType,
             Class<? extends IndexFieldData> fieldDataType, DocValueFormat defaultFormat) {
         this.id = id;

server/src/main/java/org/elasticsearch/search/aggregations/support/ValuesSourceParserHelper.java

@@ -28,7 +28,6 @@ import org.elasticsearch.script.Script;
 import org.joda.time.DateTimeZone;
 
 public final class ValuesSourceParserHelper {
-    static final ParseField TIME_ZONE = new ParseField("time_zone");
 
     private ValuesSourceParserHelper() {} // utility class, no instantiation
 
@@ -62,10 +61,10 @@ public final class ValuesSourceParserHelper {
 
 
         objectParser.declareField(ValuesSourceAggregationBuilder::field, XContentParser::text,
-                new ParseField("field"), ObjectParser.ValueType.STRING);
+            ParseField.CommonFields.FIELD, ObjectParser.ValueType.STRING);
 
         objectParser.declareField(ValuesSourceAggregationBuilder::missing, XContentParser::objectText,
-                new ParseField("missing"), ObjectParser.ValueType.VALUE);
+            ParseField.CommonFields.MISSING, ObjectParser.ValueType.VALUE);
 
         objectParser.declareField(ValuesSourceAggregationBuilder::valueType, p -> {
             ValueType valueType = ValueType.resolveForScript(p.text());
@@ -76,11 +75,11 @@ public final class ValuesSourceParserHelper {
                                 + targetValueType + "]");
             }
             return valueType;
-        }, new ParseField("value_type", "valueType"), ObjectParser.ValueType.STRING);
+        }, ValueType.VALUE_TYPE, ObjectParser.ValueType.STRING);
 
         if (formattable) {
             objectParser.declareField(ValuesSourceAggregationBuilder::format, XContentParser::text,
-                    new ParseField("format"), ObjectParser.ValueType.STRING);
+                ParseField.CommonFields.FORMAT, ObjectParser.ValueType.STRING);
         }
 
         if (scriptable) {
@@ -96,7 +95,7 @@ public final class ValuesSourceParserHelper {
                 } else {
                     return DateTimeZone.forOffsetHours(p.intValue());
                 }
-            }, TIME_ZONE, ObjectParser.ValueType.LONG);
+            }, ParseField.CommonFields.TIME_ZONE, ObjectParser.ValueType.LONG);
         }
     }
 

server/src/main/java/org/elasticsearch/search/aggregations/support/ValuesSourceType.java

@@ -19,9 +19,37 @@
 
 package org.elasticsearch.search.aggregations.support;
 
-public enum ValuesSourceType  {
+import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.io.stream.StreamInput;
+import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.common.io.stream.Writeable;
+
+import java.io.IOException;
+import java.util.Locale;
+
+public enum ValuesSourceType implements Writeable {
     ANY,
     NUMERIC,
     BYTES,
     GEOPOINT;
+
+    public static final ParseField VALUE_SOURCE_TYPE = new ParseField("value_source_type");
+
+    public static ValuesSourceType fromString(String name) {
+        return valueOf(name.trim().toUpperCase(Locale.ROOT));
+    }
+
+    public static ValuesSourceType fromStream(StreamInput in) throws IOException {
+        return in.readEnum(ValuesSourceType.class);
+    }
+
+    @Override
+    public void writeTo(StreamOutput out) throws IOException {
+        ValuesSourceType state = this;
+        out.writeEnum(state);
+    }
+
+    public String value() {
+        return name().toLowerCase(Locale.ROOT);
+    }
 }

server/src/test/java/org/elasticsearch/action/admin/ReloadSecureSettingsIT.java

@@ -205,8 +205,15 @@ public class ReloadSecureSettingsIT extends ESIntegTestCase {
                             assertThat(nodesMap.size(), equalTo(cluster().size()));
                             for (final NodesReloadSecureSettingsResponse.NodeResponse nodeResponse : nodesReloadResponse.getNodes()) {
                                 assertThat(nodeResponse.reloadException(), notNullValue());
+                                // Running in a JVM with a BouncyCastle FIPS Security Provider, decrypting the Keystore with the wrong
+                                // password returns a SecurityException if the DataInputStream can't be fully consumed
+                                if (inFipsJvm()) {
+                                    assertThat(nodeResponse.reloadException(), instanceOf(SecurityException.class));
+                                } else {
                                     assertThat(nodeResponse.reloadException(), instanceOf(IOException.class));
                                 }
+
+                            }
                         } catch (final AssertionError e) {
                             reloadSettingsError.set(e);
                         } finally {

server/src/test/java/org/elasticsearch/index/shard/IndexShardTests.java

@@ -27,6 +27,8 @@ import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.TermQuery;
 import org.apache.lucene.search.TopDocs;
 import org.apache.lucene.store.AlreadyClosedException;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.FilterDirectory;
 import org.apache.lucene.store.IOContext;
 import org.apache.lucene.util.Constants;
 import org.elasticsearch.Version;
@@ -112,6 +114,7 @@ import org.elasticsearch.test.DummyShardLock;
 import org.elasticsearch.test.FieldMaskingReader;
 import org.elasticsearch.test.VersionUtils;
 import org.elasticsearch.threadpool.ThreadPool;
+import org.elasticsearch.ElasticsearchException;
 
 import java.io.IOException;
 import java.nio.charset.Charset;
@@ -138,6 +141,7 @@ import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.BiConsumer;
 import java.util.function.Consumer;
 import java.util.function.LongFunction;
+import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
@@ -1162,6 +1166,81 @@ public class IndexShardTests extends IndexShardTestCase {
         closeShards(shard);
     }
 
+
+    public void testShardStatsWithFailures() throws IOException {
+        allowShardFailures();
+        final ShardId shardId = new ShardId("index", "_na_", 0);
+        final ShardRouting shardRouting = newShardRouting(shardId, "node", true, RecoverySource.StoreRecoverySource.EMPTY_STORE_INSTANCE, ShardRoutingState.INITIALIZING);
+        final NodeEnvironment.NodePath nodePath = new NodeEnvironment.NodePath(createTempDir());
+
+
+        ShardPath shardPath = new ShardPath(false, nodePath.resolve(shardId), nodePath.resolve(shardId), shardId);
+        Settings settings = Settings.builder().put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT)
+                .put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, 0)
+                .put(IndexMetaData.SETTING_NUMBER_OF_SHARDS, 1)
+                .build();
+        IndexMetaData metaData = IndexMetaData.builder(shardRouting.getIndexName())
+                .settings(settings)
+                .primaryTerm(0, 1)
+                .build();
+
+        // Override two Directory methods to make them fail at our will
+        // We use AtomicReference here to inject failure in the middle of the test not immediately
+        // We use Supplier<IOException> instead of IOException to produce meaningful stacktrace
+        // (remember stack trace is filled when exception is instantiated)
+        AtomicReference<Supplier<IOException>> exceptionToThrow = new AtomicReference<>();
+        AtomicBoolean throwWhenMarkingStoreCorrupted = new AtomicBoolean(false);
+        Directory directory = new FilterDirectory(newFSDirectory(shardPath.resolveIndex())) {
+            //fileLength method is called during storeStats try block
+            //it's not called when store is marked as corrupted
+            @Override
+            public long fileLength(String name) throws IOException {
+                Supplier<IOException> ex = exceptionToThrow.get();
+                if (ex == null) {
+                    return super.fileLength(name);
+                } else {
+                    throw ex.get();
+                }
+            }
+
+            //listAll method is called when marking store as corrupted
+            @Override
+            public String[] listAll() throws IOException {
+                Supplier<IOException> ex = exceptionToThrow.get();
+                if (throwWhenMarkingStoreCorrupted.get() && ex != null) {
+                    throw ex.get();
+                } else {
+                    return super.listAll();
+                }
+            }
+        };
+
+        try (Store store = createStore(shardId, new IndexSettings(metaData, Settings.EMPTY), directory)) {
+            IndexShard shard = newShard(shardRouting, shardPath, metaData, store,
+                    null, new InternalEngineFactory(), () -> {
+                    }, EMPTY_EVENT_LISTENER);
+            AtomicBoolean failureCallbackTriggered = new AtomicBoolean(false);
+            shard.addShardFailureCallback((ig)->failureCallbackTriggered.set(true));
+
+            recoverShardFromStore(shard);
+
+            final boolean corruptIndexException = randomBoolean();
+
+            if (corruptIndexException) {
+                exceptionToThrow.set(() -> new CorruptIndexException("Test CorruptIndexException", "Test resource"));
+                throwWhenMarkingStoreCorrupted.set(randomBoolean());
+            } else {
+                exceptionToThrow.set(() -> new IOException("Test IOException"));
+            }
+            ElasticsearchException e = expectThrows(ElasticsearchException.class, shard::storeStats);
+            assertTrue(failureCallbackTriggered.get());
+
+            if (corruptIndexException && !throwWhenMarkingStoreCorrupted.get()) {
+                assertTrue(store.isMarkedCorrupted());
+            }
+        }
+    }
+
     public void testRefreshMetric() throws IOException {
         IndexShard shard = newStartedShard();
         assertThat(shard.refreshStats().getTotal(), equalTo(2L)); // refresh on: finalize and end of recovery
@@ -1868,6 +1947,7 @@ public class IndexShardTests extends IndexShardTestCase {
                 ShardRoutingHelper.initWithSameId(shard.routingEntry(), RecoverySource.StoreRecoverySource.EXISTING_STORE_INSTANCE),
                 shard.shardPath(),
                 shard.indexSettings().getIndexMetaData(),
+                null,
                 wrapper,
                 new InternalEngineFactory(),
                 () -> {},
@@ -2020,6 +2100,7 @@ public class IndexShardTests extends IndexShardTestCase {
                 ShardRoutingHelper.initWithSameId(shard.routingEntry(), RecoverySource.StoreRecoverySource.EXISTING_STORE_INSTANCE),
                 shard.shardPath(),
                 shard.indexSettings().getIndexMetaData(),
+                null,
                 wrapper,
                 new InternalEngineFactory(),
                 () -> {},
@@ -2506,7 +2587,7 @@ public class IndexShardTests extends IndexShardTestCase {
                 .put(IndexSettings.INDEX_CHECK_ON_STARTUP.getKey(), randomFrom("false", "true", "checksum", "fix")))
             .build();
         final IndexShard newShard = newShard(shardRouting, indexShard.shardPath(), indexMetaData,
-            null, indexShard.engineFactory, indexShard.getGlobalCheckpointSyncer(), EMPTY_EVENT_LISTENER);
+                null, null, indexShard.engineFactory, indexShard.getGlobalCheckpointSyncer(), EMPTY_EVENT_LISTENER);
 
         Store.MetadataSnapshot storeFileMetaDatas = newShard.snapshotStoreMetadata();
         assertTrue("at least 2 files, commit and data: " + storeFileMetaDatas.toString(), storeFileMetaDatas.size() > 1);
@@ -3005,7 +3086,7 @@ public class IndexShardTests extends IndexShardTestCase {
         ShardPath shardPath = new ShardPath(false, nodePath.resolve(shardId), nodePath.resolve(shardId), shardId);
         AtomicBoolean markedInactive = new AtomicBoolean();
         AtomicReference<IndexShard> primaryRef = new AtomicReference<>();
-        IndexShard primary = newShard(shardRouting, shardPath, metaData, null, new InternalEngineFactory(), () -> {
+        IndexShard primary = newShard(shardRouting, shardPath, metaData, null, null, new InternalEngineFactory(), () -> {
         }, new IndexEventListener() {
             @Override
             public void onShardInactive(IndexShard indexShard) {

server/src/test/java/org/elasticsearch/indices/cluster/IndicesClusterStateServiceRandomUpdatesTests.java

@@ -97,6 +97,7 @@ public class IndicesClusterStateServiceRandomUpdatesTests extends AbstractIndice
         terminate(threadPool);
     }
 
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/32308")
     public void testRandomClusterStateUpdates() {
         // we have an IndicesClusterStateService per node in the cluster
         final Map<DiscoveryNode, IndicesClusterStateService> clusterStateServiceMap = new HashMap<>();

server/src/test/java/org/elasticsearch/repositories/blobstore/BlobStoreRepositoryRestoreTests.java

@@ -105,6 +105,7 @@ public class BlobStoreRepositoryRestoreTests extends IndexShardTestCase {
                     shard.shardPath(),
                     shard.indexSettings().getIndexMetaData(),
                     null,
+                    null,
                     new InternalEngineFactory(),
                     () -> {},
                     EMPTY_EVENT_LISTENER);

server/src/test/java/org/elasticsearch/search/aggregations/bucket/nested/NestedAggregatorTests.java

@@ -655,6 +655,7 @@ public class NestedAggregatorTests extends AggregatorTestCase {
 
     public void testFieldAlias() throws IOException {
         int numRootDocs = randomIntBetween(1, 20);
+        int expectedNestedDocs = 0;
 
         MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType(
             NumberFieldMapper.NumberType.LONG);
@@ -665,6 +666,7 @@ public class NestedAggregatorTests extends AggregatorTestCase {
                 for (int i = 0; i < numRootDocs; i++) {
                     List<Document> documents = new ArrayList<>();
                     int numNestedDocs = randomIntBetween(0, 20);
+                    expectedNestedDocs += numNestedDocs;
                     generateDocuments(documents, numNestedDocs, i, NESTED_OBJECT, VALUE_FIELD_NAME);
 
                     Document document = new Document();
@@ -681,7 +683,6 @@ public class NestedAggregatorTests extends AggregatorTestCase {
             try (IndexReader indexReader = wrap(DirectoryReader.open(directory))) {
                 NestedAggregationBuilder agg = nested(NESTED_AGG, NESTED_OBJECT).subAggregation(
                     max(MAX_AGG_NAME).field(VALUE_FIELD_NAME));
-
                 NestedAggregationBuilder aliasAgg = nested(NESTED_AGG, NESTED_OBJECT).subAggregation(
                     max(MAX_AGG_NAME).field(VALUE_FIELD_NAME + "-alias"));
 
@@ -690,8 +691,8 @@ public class NestedAggregatorTests extends AggregatorTestCase {
                 Nested aliasNested = search(newSearcher(indexReader, false, true),
                     new MatchAllDocsQuery(), aliasAgg, fieldType);
 
-                assertTrue(nested.getDocCount() > 0);
                 assertEquals(nested, aliasNested);
+                assertEquals(expectedNestedDocs, nested.getDocCount());
             }
         }
     }

server/src/test/java/org/elasticsearch/search/aggregations/bucket/nested/ReverseNestedAggregatorTests.java

@@ -169,6 +169,7 @@ public class ReverseNestedAggregatorTests extends AggregatorTestCase {
 
     public void testFieldAlias() throws IOException {
         int numParentDocs = randomIntBetween(1, 20);
+        int expectedParentDocs = 0;
 
         MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType(
             NumberFieldMapper.NumberType.LONG);
@@ -179,6 +180,10 @@ public class ReverseNestedAggregatorTests extends AggregatorTestCase {
                 for (int i = 0; i < numParentDocs; i++) {
                     List<Document> documents = new ArrayList<>();
                     int numNestedDocs = randomIntBetween(0, 20);
+                    if (numNestedDocs > 0) {
+                        expectedParentDocs++;
+                    }
+
                     for (int nested = 0; nested < numNestedDocs; nested++) {
                         Document document = new Document();
                         document.add(new Field(IdFieldMapper.NAME, Uid.encodeId(Integer.toString(i)),
@@ -203,7 +208,6 @@ public class ReverseNestedAggregatorTests extends AggregatorTestCase {
             }
 
             try (IndexReader indexReader = wrap(DirectoryReader.open(directory))) {
-
                 MaxAggregationBuilder maxAgg = max(MAX_AGG_NAME).field(VALUE_FIELD_NAME);
                 MaxAggregationBuilder aliasMaxAgg = max(MAX_AGG_NAME).field(VALUE_FIELD_NAME + "-alias");
 
@@ -220,8 +224,8 @@ public class ReverseNestedAggregatorTests extends AggregatorTestCase {
                 ReverseNested reverseNested = nested.getAggregations().get(REVERSE_AGG_NAME);
                 ReverseNested aliasReverseNested = aliasNested.getAggregations().get(REVERSE_AGG_NAME);
 
-                assertTrue(reverseNested.getDocCount() > 0);
                 assertEquals(reverseNested, aliasReverseNested);
+                assertEquals(expectedParentDocs, reverseNested.getDocCount());
             }
         }
     }

server/src/test/java/org/elasticsearch/search/aggregations/metrics/weighted_avg/WeightedAvgAggregatorTests.java

@@ -0,0 +1,428 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.metrics.weighted_avg;
+
+import org.apache.lucene.document.IntPoint;
+import org.apache.lucene.document.NumericDocValuesField;
+import org.apache.lucene.document.SortedNumericDocValuesField;
+import org.apache.lucene.index.DirectoryReader;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.RandomIndexWriter;
+import org.apache.lucene.search.DocValuesFieldExistsQuery;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.MatchAllDocsQuery;
+import org.apache.lucene.search.Query;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.util.NumericUtils;
+import org.elasticsearch.common.CheckedConsumer;
+import org.elasticsearch.index.mapper.MappedFieldType;
+import org.elasticsearch.index.mapper.NumberFieldMapper;
+import org.elasticsearch.search.aggregations.AggregationExecutionException;
+import org.elasticsearch.search.aggregations.AggregatorTestCase;
+import org.elasticsearch.search.aggregations.support.MultiValuesSourceFieldConfig;
+import org.joda.time.DateTimeZone;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.function.Consumer;
+
+import static java.util.Collections.singleton;
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.equalTo;
+
+public class WeightedAvgAggregatorTests extends AggregatorTestCase {
+
+    public void testNoDocs() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            // Intentionally not writing any docs
+        }, avg -> {
+            assertEquals(Double.NaN, avg.getValue(), 0);
+        });
+    }
+
+    public void testNoMatchingField() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            iw.addDocument(singleton(new SortedNumericDocValuesField("wrong_number", 7)));
+            iw.addDocument(singleton(new SortedNumericDocValuesField("wrong_number", 3)));
+        }, avg -> {
+            assertEquals(Double.NaN, avg.getValue(), 0);
+        });
+    }
+
+    public void testSomeMatchesSortedNumericDocValuesNoWeight() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 7),
+                new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("weight_field", 1)));
+        }, avg -> {
+            assertEquals(4, avg.getValue(), 0);
+        });
+    }
+
+    public void testSomeMatchesSortedNumericDocValuesWeights() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 7),
+                new SortedNumericDocValuesField("weight_field", 2)));
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("weight_field", 3)));
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("weight_field", 3)));
+
+        }, avg -> {
+            // (7*2 + 2*3 + 3*3) / (2+3+3) == 3.625
+            assertEquals(3.625, avg.getValue(), 0);
+        });
+    }
+
+    public void testSomeMatchesNumericDocValues() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new DocValuesFieldExistsQuery("value_field"), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new NumericDocValuesField("value_field", 7),
+                new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new NumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new NumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("weight_field", 1)));
+        }, avg -> {
+            assertEquals(4, avg.getValue(), 0);
+        });
+    }
+
+    public void testQueryFiltering() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(IntPoint.newRangeQuery("value_field", 0, 3), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new IntPoint("value_field", 7), new SortedNumericDocValuesField("value_field", 7),
+                new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new IntPoint("value_field", 1), new SortedNumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new IntPoint("value_field", 3), new SortedNumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("weight_field", 1)));
+        }, avg -> {
+            assertEquals(2.5, avg.getValue(), 0);
+        });
+    }
+
+    public void testQueryFilteringWeights() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(IntPoint.newRangeQuery("filter_field", 0, 3), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new IntPoint("filter_field", 7), new SortedNumericDocValuesField("value_field", 7),
+                new SortedNumericDocValuesField("weight_field", 2)));
+            iw.addDocument(Arrays.asList(new IntPoint("filter_field", 2), new SortedNumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("weight_field", 3)));
+            iw.addDocument(Arrays.asList(new IntPoint("filter_field", 3), new SortedNumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("weight_field", 4)));
+        }, avg -> {
+            double value = (2.0*3.0 + 3.0*4.0) / (3.0+4.0);
+            assertEquals(value, avg.getValue(), 0);
+        });
+    }
+
+    public void testQueryFiltersAll() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(IntPoint.newRangeQuery("value_field", -1, 0), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new IntPoint("value_field", 7), new SortedNumericDocValuesField("value_field", 7)));
+            iw.addDocument(Arrays.asList(new IntPoint("value_field", 1), new SortedNumericDocValuesField("value_field", 2)));
+            iw.addDocument(Arrays.asList(new IntPoint("value_field", 3), new SortedNumericDocValuesField("value_field", 7)));
+        }, avg -> {
+            assertEquals(Double.NaN, avg.getValue(), 0);
+        });
+    }
+
+    public void testQueryFiltersAllWeights() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(IntPoint.newRangeQuery("value_field", -1, 0), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new IntPoint("filter_field", 7), new SortedNumericDocValuesField("value_field", 7),
+                new SortedNumericDocValuesField("weight_field", 2)));
+            iw.addDocument(Arrays.asList(new IntPoint("filter_field", 2), new SortedNumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("weight_field", 3)));
+            iw.addDocument(Arrays.asList(new IntPoint("filter_field", 3), new SortedNumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("weight_field", 4)));
+        }, avg -> {
+            assertEquals(Double.NaN, avg.getValue(), 0);
+        });
+    }
+
+    public void testValueSetMissing() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder()
+            .setFieldName("value_field")
+            .setMissing(2)
+            .build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            iw.addDocument(Collections.singletonList(new SortedNumericDocValuesField("weight_field", 2)));
+            iw.addDocument(Collections.singletonList(new SortedNumericDocValuesField("weight_field", 3)));
+            iw.addDocument(Collections.singletonList(new SortedNumericDocValuesField("weight_field", 4)));
+        }, avg -> {
+            double value = (2.0*2.0 + 2.0*3.0 + 2.0*4.0) / (2.0+3.0+4.0);
+            assertEquals(value, avg.getValue(), 0);
+        });
+    }
+
+    public void testWeightSetMissing() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig =  new MultiValuesSourceFieldConfig.Builder()
+            .setFieldName("weight_field")
+            .setMissing(2)
+            .build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            iw.addDocument(Collections.singletonList(new SortedNumericDocValuesField("value_field", 2)));
+            iw.addDocument(Collections.singletonList(new SortedNumericDocValuesField("value_field", 3)));
+            iw.addDocument(Collections.singletonList(new SortedNumericDocValuesField("value_field", 4)));
+        }, avg -> {
+            double value = (2.0*2.0 + 3.0*2.0 + 4.0*2.0) / (2.0+2.0+2.0);
+            assertEquals(value, avg.getValue(), 0);
+        });
+    }
+
+    public void testWeightSetTimezone() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder()
+            .setFieldName("weight_field")
+            .setTimeZone(DateTimeZone.UTC)
+            .build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+
+        IllegalArgumentException e = expectThrows(IllegalArgumentException.class,
+            () -> testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+                iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 2),
+                    new SortedNumericDocValuesField("weight_field", 1)));
+                iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 3),
+                    new SortedNumericDocValuesField("weight_field", 1)));
+                iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 4),
+                    new SortedNumericDocValuesField("weight_field", 1)));
+            }, avg -> {
+               fail("Should not have executed test case");
+            }));
+        assertThat(e.getMessage(), equalTo("Field [weight_field] of type [long] does not support custom time zones"));
+    }
+
+    public void testValueSetTimezone() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder()
+            .setFieldName("value_field")
+            .setTimeZone(DateTimeZone.UTC)
+            .build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+
+        IllegalArgumentException e = expectThrows(IllegalArgumentException.class,
+            () -> testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+                iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 2),
+                    new SortedNumericDocValuesField("weight_field", 1)));
+                iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 3),
+                    new SortedNumericDocValuesField("weight_field", 1)));
+                iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 4),
+                    new SortedNumericDocValuesField("weight_field", 1)));
+            }, avg -> {
+                fail("Should not have executed test case");
+            }));
+        assertThat(e.getMessage(), equalTo("Field [value_field] of type [long] does not support custom time zones"));
+    }
+
+    public void testMultiValues() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder()
+            .setFieldName("value_field")
+            .build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+
+        testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 2),
+                new SortedNumericDocValuesField("value_field", 3), new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 3),
+                new SortedNumericDocValuesField("value_field", 4), new SortedNumericDocValuesField("weight_field", 1)));
+            iw.addDocument(Arrays.asList(new SortedNumericDocValuesField("value_field", 4),
+                new SortedNumericDocValuesField("value_field", 5), new SortedNumericDocValuesField("weight_field", 1)));
+        }, avg -> {
+            double value = (((2.0+3.0)/2.0) + ((3.0+4.0)/2.0) + ((4.0+5.0)/2.0)) / (1.0+1.0+1.0);
+            assertEquals(value, avg.getValue(), 0);
+        });
+    }
+
+    public void testMultiWeight() throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder()
+            .setFieldName("weight_field")
+            .build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+
+        AggregationExecutionException e = expectThrows(AggregationExecutionException.class,
+            () -> testCase(new MatchAllDocsQuery(), aggregationBuilder, iw -> {
+                iw.addDocument(Arrays.asList(
+                    new SortedNumericDocValuesField("value_field", 2),
+                    new SortedNumericDocValuesField("weight_field", 2), new SortedNumericDocValuesField("weight_field", 3)));
+                iw.addDocument(Arrays.asList(
+                    new SortedNumericDocValuesField("value_field", 3),
+                    new SortedNumericDocValuesField("weight_field", 3), new SortedNumericDocValuesField("weight_field", 4)));
+                iw.addDocument(Arrays.asList(
+                    new SortedNumericDocValuesField("value_field", 4),
+                    new SortedNumericDocValuesField("weight_field", 4), new SortedNumericDocValuesField("weight_field", 5)));
+            }, avg -> {
+                fail("Should have thrown exception");
+            }));
+        assertThat(e.getMessage(), containsString("Encountered more than one weight for a single document. " +
+            "Use a script to combine multiple weights-per-doc into a single value."));
+    }
+
+
+    public void testSummationAccuracy() throws IOException {
+        // Summing up a normal array and expect an accurate value
+        double[] values = new double[]{0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.9, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7};
+        verifyAvgOfDoubles(values, 0.9, 0d);
+
+        // Summing up an array which contains NaN and infinities and expect a result same as naive summation
+        int n = randomIntBetween(5, 10);
+        values = new double[n];
+        double sum = 0;
+        for (int i = 0; i < n; i++) {
+            values[i] = frequently()
+                ? randomFrom(Double.NaN, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY)
+                : randomDoubleBetween(Double.MIN_VALUE, Double.MAX_VALUE, true);
+            sum += values[i];
+        }
+        verifyAvgOfDoubles(values, sum / n, 1e-10);
+
+        // Summing up some big double values and expect infinity result
+        n = randomIntBetween(5, 10);
+        double[] largeValues = new double[n];
+        for (int i = 0; i < n; i++) {
+            largeValues[i] = Double.MAX_VALUE;
+        }
+        verifyAvgOfDoubles(largeValues, Double.POSITIVE_INFINITY, 0d);
+
+        for (int i = 0; i < n; i++) {
+            largeValues[i] = -Double.MAX_VALUE;
+        }
+        verifyAvgOfDoubles(largeValues, Double.NEGATIVE_INFINITY, 0d);
+    }
+
+    private void verifyAvgOfDoubles(double[] values, double expected, double delta) throws IOException {
+        MultiValuesSourceFieldConfig valueConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("value_field").build();
+        MultiValuesSourceFieldConfig weightConfig = new MultiValuesSourceFieldConfig.Builder().setFieldName("weight_field").build();
+        WeightedAvgAggregationBuilder aggregationBuilder = new WeightedAvgAggregationBuilder("_name")
+            .value(valueConfig)
+            .weight(weightConfig);
+        testCase(new MatchAllDocsQuery(), aggregationBuilder,
+            iw -> {
+                for (double value : values) {
+                    iw.addDocument(Arrays.asList(new NumericDocValuesField("value_field", NumericUtils.doubleToSortableLong(value)),
+                        new SortedNumericDocValuesField("weight_field", NumericUtils.doubleToSortableLong(1.0))));
+                }
+            },
+            avg -> assertEquals(expected, avg.getValue(), delta),
+            NumberFieldMapper.NumberType.DOUBLE
+        );
+    }
+
+    private void testCase(Query query, WeightedAvgAggregationBuilder aggregationBuilder,
+                          CheckedConsumer<RandomIndexWriter, IOException> buildIndex,
+                          Consumer<InternalWeightedAvg> verify) throws IOException {
+        testCase(query, aggregationBuilder, buildIndex, verify, NumberFieldMapper.NumberType.LONG);
+    }
+
+    private void testCase(Query query, WeightedAvgAggregationBuilder aggregationBuilder,
+                          CheckedConsumer<RandomIndexWriter, IOException> buildIndex,
+                          Consumer<InternalWeightedAvg> verify,
+                          NumberFieldMapper.NumberType fieldNumberType) throws IOException {
+
+        Directory directory = newDirectory();
+        RandomIndexWriter indexWriter = new RandomIndexWriter(random(), directory);
+        buildIndex.accept(indexWriter);
+        indexWriter.close();
+        IndexReader indexReader = DirectoryReader.open(directory);
+        IndexSearcher indexSearcher = newSearcher(indexReader, true, true);
+
+        try {
+            MappedFieldType fieldType = new NumberFieldMapper.NumberFieldType(fieldNumberType);
+            fieldType.setName("value_field");
+            fieldType.setHasDocValues(true);
+
+            MappedFieldType fieldType2 = new NumberFieldMapper.NumberFieldType(fieldNumberType);
+            fieldType2.setName("weight_field");
+            fieldType2.setHasDocValues(true);
+
+            WeightedAvgAggregator aggregator = createAggregator(aggregationBuilder, indexSearcher, fieldType, fieldType2);
+            aggregator.preCollection();
+            indexSearcher.search(query, aggregator);
+            aggregator.postCollection();
+            verify.accept((InternalWeightedAvg) aggregator.buildAggregation(0L));
+        } finally {
+            indexReader.close();
+            directory.close();
+        }
+    }
+}

server/src/test/java/org/elasticsearch/search/aggregations/support/MultiValuesSourceFieldConfigTests.java

@@ -0,0 +1,38 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.elasticsearch.search.aggregations.support;
+
+import org.elasticsearch.script.Script;
+import org.elasticsearch.test.ESTestCase;
+
+import static org.hamcrest.Matchers.equalTo;
+
+public class MultiValuesSourceFieldConfigTests extends ESTestCase {
+    public void testMissingFieldScript() {
+        IllegalArgumentException e = expectThrows(IllegalArgumentException.class, () -> new MultiValuesSourceFieldConfig.Builder().build());
+        assertThat(e.getMessage(), equalTo("[field] and [script] cannot both be null.  Please specify one or the other."));
+    }
+
+    public void testBothFieldScript() {
+        IllegalArgumentException e = expectThrows(IllegalArgumentException.class,
+            () -> new MultiValuesSourceFieldConfig.Builder().setFieldName("foo").setScript(new Script("foo")).build());
+        assertThat(e.getMessage(), equalTo("[field] and [script] cannot both be configured.  Please specify one or the other."));
+    }
+}

test/framework/src/main/java/org/elasticsearch/index/replication/ESIndexLevelReplicationTestCase.java

@@ -265,7 +265,8 @@ public abstract class ESIndexLevelReplicationTestCase extends IndexShardTestCase
                     RecoverySource.PeerRecoverySource.INSTANCE);
 
             final IndexShard newReplica =
-                newShard(shardRouting, shardPath, indexMetaData, null, getEngineFactory(shardRouting), () -> {}, EMPTY_EVENT_LISTENER);
+                    newShard(shardRouting, shardPath, indexMetaData, null, null, getEngineFactory(shardRouting),
+                            () -> {}, EMPTY_EVENT_LISTENER);
             replicas.add(newReplica);
             updateAllocationIDsOnPrimary();
             return newReplica;

test/framework/src/main/java/org/elasticsearch/index/shard/IndexShardTestCase.java

@@ -163,15 +163,20 @@ public abstract class IndexShardTestCase extends ESTestCase {
         return Settings.EMPTY;
     }
 
-    private Store createStore(IndexSettings indexSettings, ShardPath shardPath) throws IOException {
-        final ShardId shardId = shardPath.getShardId();
+
+    protected Store createStore(IndexSettings indexSettings, ShardPath shardPath) throws IOException {
+        return createStore(shardPath.getShardId(), indexSettings, newFSDirectory(shardPath.resolveIndex()));
+    }
+
+    protected Store createStore(ShardId shardId, IndexSettings indexSettings, Directory directory) throws IOException {
         final DirectoryService directoryService = new DirectoryService(shardId, indexSettings) {
             @Override
             public Directory newDirectory() throws IOException {
-                return newFSDirectory(shardPath.resolveIndex());
+                return directory;
             }
         };
         return new Store(shardId, indexSettings, directoryService, new DummyShardLock(shardId));
+
     }
 
     /**
@@ -284,7 +289,7 @@ public abstract class IndexShardTestCase extends ESTestCase {
         final ShardId shardId = routing.shardId();
         final NodeEnvironment.NodePath nodePath = new NodeEnvironment.NodePath(createTempDir());
         ShardPath shardPath = new ShardPath(false, nodePath.resolve(shardId), nodePath.resolve(shardId), shardId);
-        return newShard(routing, shardPath, indexMetaData, indexSearcherWrapper, engineFactory, globalCheckpointSyncer,
+        return newShard(routing, shardPath, indexMetaData, null, indexSearcherWrapper, engineFactory, globalCheckpointSyncer,
             EMPTY_EVENT_LISTENER, listeners);
     }
 
@@ -293,20 +298,23 @@ public abstract class IndexShardTestCase extends ESTestCase {
      * @param routing                       shard routing to use
      * @param shardPath                     path to use for shard data
      * @param indexMetaData                 indexMetaData for the shard, including any mapping
+     * @param store                         an optional custom store to use. If null a default file based store will be created
      * @param indexSearcherWrapper          an optional wrapper to be used during searchers
      * @param globalCheckpointSyncer        callback for syncing global checkpoints
-     * @param indexEventListener     index even listener
+     * @param indexEventListener            index event listener
      * @param listeners                     an optional set of listeners to add to the shard
      */
     protected IndexShard newShard(ShardRouting routing, ShardPath shardPath, IndexMetaData indexMetaData,
-                                  @Nullable IndexSearcherWrapper indexSearcherWrapper,
+                                  @Nullable Store store, @Nullable IndexSearcherWrapper indexSearcherWrapper,
                                   @Nullable EngineFactory engineFactory,
                                   Runnable globalCheckpointSyncer,
                                   IndexEventListener indexEventListener, IndexingOperationListener... listeners) throws IOException {
         final Settings nodeSettings = Settings.builder().put("node.name", routing.currentNodeId()).build();
         final IndexSettings indexSettings = new IndexSettings(indexMetaData, nodeSettings);
         final IndexShard indexShard;
-        final Store store = createStore(indexSettings, shardPath);
+        if (store == null) {
+            store = createStore(indexSettings, shardPath);
+        }
         boolean success = false;
         try {
             IndexCache indexCache = new IndexCache(indexSettings, new DisabledQueryCache(indexSettings), null);
@@ -357,6 +365,7 @@ public abstract class IndexShardTestCase extends ESTestCase {
                 current.shardPath(),
                 current.indexSettings().getIndexMetaData(),
                 null,
+                null,
                 current.engineFactory,
                 current.getGlobalCheckpointSyncer(),
             EMPTY_EVENT_LISTENER, listeners);

test/framework/src/main/java/org/elasticsearch/test/ESIntegTestCase.java

@@ -176,6 +176,7 @@ import java.net.InetSocketAddress;
 import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.security.Security;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -2364,4 +2365,7 @@ public abstract class ESIntegTestCase extends ESTestCase {
         });
     }
 
+    public static boolean inFipsJvm() {
+        return Security.getProviders()[0].getName().toLowerCase(Locale.ROOT).contains("fips");
+    }
 }

x-pack/docs/en/rest-api/rollup/rollup-caps.asciidoc

@@ -33,7 +33,7 @@ live?
 
 ==== Request Body
 
-There is no request body for the Get Jobs API.
+There is no request body for the Get Rollup Caps API.
 
 ==== Authorization
 

x-pack/plugin/build.gradle

@@ -104,39 +104,28 @@ integTestRunner {
   systemProperty 'tests.rest.blacklist', blacklist.join(',')
 }
 
-// location of generated keystores and certificates
+// location for keys and certificates
 File keystoreDir = new File(project.buildDir, 'keystore')
+File nodeKey = file("$keystoreDir/testnode.pem")
+File nodeCert = file("$keystoreDir/testnode.crt")
 
-// Generate the node's keystore
-File nodeKeystore = new File(keystoreDir, 'test-node.jks')
-task createNodeKeyStore(type: LoggedExec) {
-  doFirst {
-    if (nodeKeystore.parentFile.exists() == false) {
-      nodeKeystore.parentFile.mkdirs()
+// Add key and certs to test classpath: it expects them there
+// User cert and key PEM files instead of a JKS Keystore for the cluster's trust material so that
+// it can run in a FIPS 140 JVM
+// TODO: Remove all existing uses of cross project file references when the new approach for referencing static files is available
+// https://github.com/elastic/elasticsearch/pull/32201
+task copyKeyCerts(type: Copy) {
+  from(project(':x-pack:plugin:core').file('src/test/resources/org/elasticsearch/xpack/security/transport/ssl/certs/simple/')) {
+    include 'testnode.crt', 'testnode.pem'
     }
-    if (nodeKeystore.exists()) {
-      delete nodeKeystore
+  into keystoreDir
 }
-  }
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  standardInput = new ByteArrayInputStream('FirstName LastName\nUnit\nOrganization\nCity\nState\nNL\nyes\n\n'.getBytes('UTF-8'))
-  args '-genkey',
-          '-alias', 'test-node',
-          '-keystore', nodeKeystore,
-          '-keyalg', 'RSA',
-          '-keysize', '2048',
-          '-validity', '712',
-          '-dname', 'CN=smoke-test-plugins-ssl',
-          '-keypass', 'keypass',
-          '-storepass', 'keypass'
-}
-
 // Add keystores to test classpath: it expects it there
 sourceSets.test.resources.srcDir(keystoreDir)
-processTestResources.dependsOn(createNodeKeyStore)
+processTestResources.dependsOn(copyKeyCerts)
 
 integTestCluster {
-  dependsOn createNodeKeyStore
+  dependsOn copyKeyCerts
   setting 'xpack.ml.enabled', 'true'
   setting 'xpack.security.enabled', 'true'
   setting 'logger.org.elasticsearch.xpack.ml.datafeed', 'TRACE'
@@ -145,17 +134,19 @@ integTestCluster {
   setting 'xpack.monitoring.exporters._local.enabled', 'false'
   setting 'xpack.security.authc.token.enabled', 'true'
   setting 'xpack.security.transport.ssl.enabled', 'true'
-  setting 'xpack.security.transport.ssl.keystore.path', nodeKeystore.name
+  setting 'xpack.security.transport.ssl.key', nodeKey.name
+  setting 'xpack.security.transport.ssl.certificate', nodeCert.name
   setting 'xpack.security.transport.ssl.verification_mode', 'certificate'
   setting 'xpack.security.audit.enabled', 'true'
   setting 'xpack.license.self_generated.type', 'trial'
   keystoreSetting 'bootstrap.password', 'x-pack-test-password'
-  keystoreSetting 'xpack.security.transport.ssl.keystore.secure_password', 'keypass'
+  keystoreSetting 'xpack.security.transport.ssl.secure_key_passphrase', 'testnode'
   distribution = 'zip' // this is important since we use the reindex module in ML
 
   setupCommand 'setupTestUser', 'bin/elasticsearch-users', 'useradd', 'x_pack_rest_user', '-p', 'x-pack-test-password', '-r', 'superuser'
 
-  extraConfigFile nodeKeystore.name, nodeKeystore
+  extraConfigFile nodeKey.name, nodeKey
+  extraConfigFile nodeCert.name, nodeCert
 
   waitCondition = { NodeInfo node, AntBuilder ant ->
       File tmpFile = new File(node.cwd, 'wait.success')

x-pack/plugin/core/src/test/java/org/elasticsearch/license/StartBasicLicenseTests.java

@@ -5,6 +5,7 @@
  */
 package org.elasticsearch.license;
 
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -67,12 +68,14 @@ public class StartBasicLicenseTests extends AbstractLicensesIntegrationTestCase
         }
 
         RestClient restClient = getRestClient();
-        Response response = restClient.performRequest("GET", "/_xpack/license/basic_status");
+        Response response = restClient.performRequest(new Request("GET", "/_xpack/license/basic_status"));
         String body = Streams.copyToString(new InputStreamReader(response.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response.getStatusLine().getStatusCode());
         assertEquals("{\"eligible_to_start_basic\":true}", body);
 
-        Response response2 = restClient.performRequest("POST", "/_xpack/license/start_basic?acknowledge=true");
+        Request ackRequest = new Request("POST", "/_xpack/license/start_basic");
+        ackRequest.addParameter("acknowledge", "true");
+        Response response2 = restClient.performRequest(ackRequest);
         String body2 = Streams.copyToString(new InputStreamReader(response2.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response2.getStatusLine().getStatusCode());
         assertTrue(body2.contains("\"acknowledged\":true"));
@@ -86,20 +89,19 @@ public class StartBasicLicenseTests extends AbstractLicensesIntegrationTestCase
         long expirationMillis = licensingClient.prepareGetLicense().get().license().expiryDate();
         assertEquals(LicenseService.BASIC_SELF_GENERATED_LICENSE_EXPIRATION_MILLIS, expirationMillis);
 
-        Response response3 = restClient.performRequest("GET", "/_xpack/license");
+        Response response3 = restClient.performRequest(new Request("GET", "/_xpack/license"));
         String body3 = Streams.copyToString(new InputStreamReader(response3.getEntity().getContent(), StandardCharsets.UTF_8));
         assertTrue(body3.contains("\"type\" : \"basic\""));
         assertFalse(body3.contains("expiry_date"));
         assertFalse(body3.contains("expiry_date_in_millis"));
 
-
-        Response response4 = restClient.performRequest("GET", "/_xpack/license/basic_status");
+        Response response4 = restClient.performRequest(new Request("GET", "/_xpack/license/basic_status"));
         String body4 = Streams.copyToString(new InputStreamReader(response4.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response3.getStatusLine().getStatusCode());
         assertEquals("{\"eligible_to_start_basic\":false}", body4);
 
         ResponseException ex = expectThrows(ResponseException.class,
-                () -> restClient.performRequest("POST", "/_xpack/license/start_basic"));
+                () -> restClient.performRequest(new Request("POST", "/_xpack/license/start_basic")));
         Response response5 = ex.getResponse();
         String body5 = Streams.copyToString(new InputStreamReader(response5.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(403, response5.getStatusLine().getStatusCode());
@@ -118,7 +120,7 @@ public class StartBasicLicenseTests extends AbstractLicensesIntegrationTestCase
             assertEquals("trial", getLicenseResponse.license().type());
         });
 
-        Response response2 = getRestClient().performRequest("POST", "/_xpack/license/start_basic");
+        Response response2 = getRestClient().performRequest(new Request("POST", "/_xpack/license/start_basic"));
         String body2 = Streams.copyToString(new InputStreamReader(response2.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response2.getStatusLine().getStatusCode());
         assertTrue(body2.contains("\"acknowledged\":false"));

x-pack/plugin/core/src/test/java/org/elasticsearch/license/StartTrialLicenseTests.java

@@ -5,6 +5,7 @@
  */
 package org.elasticsearch.license;
 
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -54,13 +55,13 @@ public class StartTrialLicenseTests extends AbstractLicensesIntegrationTestCase
         ensureStartingWithBasic();
 
         RestClient restClient = getRestClient();
-        Response response = restClient.performRequest("GET", "/_xpack/license/trial_status");
+        Response response = restClient.performRequest(new Request("GET", "/_xpack/license/trial_status"));
         String body = Streams.copyToString(new InputStreamReader(response.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response.getStatusLine().getStatusCode());
         assertEquals("{\"eligible_to_start_trial\":true}", body);
 
         // Test that starting will fail without acknowledgement
-        Response response2 = restClient.performRequest("POST", "/_xpack/license/start_trial");
+        Response response2 = restClient.performRequest(new Request("POST", "/_xpack/license/start_trial"));
         String body2 = Streams.copyToString(new InputStreamReader(response2.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response2.getStatusLine().getStatusCode());
         assertTrue(body2.contains("\"trial_was_started\":false"));
@@ -74,7 +75,10 @@ public class StartTrialLicenseTests extends AbstractLicensesIntegrationTestCase
 
         String type = randomFrom(LicenseService.VALID_TRIAL_TYPES);
 
-        Response response3 = restClient.performRequest("POST", "/_xpack/license/start_trial?acknowledge=true&type=" + type);
+        Request ackRequest = new Request("POST", "/_xpack/license/start_trial");
+        ackRequest.addParameter("acknowledge", "true");
+        ackRequest.addParameter("type", type);
+        Response response3 = restClient.performRequest(ackRequest);
         String body3 = Streams.copyToString(new InputStreamReader(response3.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response3.getStatusLine().getStatusCode());
         assertTrue(body3.contains("\"trial_was_started\":true"));
@@ -86,15 +90,17 @@ public class StartTrialLicenseTests extends AbstractLicensesIntegrationTestCase
             assertEquals(type, postTrialLicenseResponse.license().type());
         });
 
-        Response response4 = restClient.performRequest("GET", "/_xpack/license/trial_status");
+        Response response4 = restClient.performRequest(new Request("GET", "/_xpack/license/trial_status"));
         String body4 = Streams.copyToString(new InputStreamReader(response4.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(200, response4.getStatusLine().getStatusCode());
         assertEquals("{\"eligible_to_start_trial\":false}", body4);
 
         String secondAttemptType = randomFrom(LicenseService.VALID_TRIAL_TYPES);
 
-        ResponseException ex = expectThrows(ResponseException.class,
-                () -> restClient.performRequest("POST", "/_xpack/license/start_trial?acknowledge=true&type=" + secondAttemptType));
+        Request startTrialWhenStartedRequest = new Request("POST", "/_xpack/license/start_trial");
+        startTrialWhenStartedRequest.addParameter("acknowledge", "true");
+        startTrialWhenStartedRequest.addParameter("type", secondAttemptType);
+        ResponseException ex = expectThrows(ResponseException.class, () -> restClient.performRequest(startTrialWhenStartedRequest));
         Response response5 = ex.getResponse();
         String body5 = Streams.copyToString(new InputStreamReader(response5.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(403, response5.getStatusLine().getStatusCode());
@@ -105,8 +111,9 @@ public class StartTrialLicenseTests extends AbstractLicensesIntegrationTestCase
     public void testInvalidType() throws Exception {
         ensureStartingWithBasic();
 
-        ResponseException ex = expectThrows(ResponseException.class, () ->
-                getRestClient().performRequest("POST", "/_xpack/license/start_trial?type=basic"));
+        Request request = new Request("POST", "/_xpack/license/start_trial");
+        request.addParameter("type", "basic");
+        ResponseException ex = expectThrows(ResponseException.class, () -> getRestClient().performRequest(request));
         Response response = ex.getResponse();
         String body = Streams.copyToString(new InputStreamReader(response.getEntity().getContent(), StandardCharsets.UTF_8));
         assertEquals(400, response.getStatusLine().getStatusCode());

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/ml/integration/MlRestTestStateCleaner.java

@@ -44,20 +44,11 @@ public class MlRestTestStateCleaner {
         }
 
         try {
-            int statusCode = adminClient.performRequest("POST", "/_xpack/ml/datafeeds/_all/_stop")
-                    .getStatusLine().getStatusCode();
-            if (statusCode != 200) {
-                logger.error("Got status code " + statusCode + " when stopping datafeeds");
-            }
+            adminClient.performRequest(new Request("POST", "/_xpack/ml/datafeeds/_all/_stop"));
         } catch (Exception e1) {
             logger.warn("failed to stop all datafeeds. Forcing stop", e1);
             try {
-                int statusCode = adminClient
-                        .performRequest("POST", "/_xpack/ml/datafeeds/_all/_stop?force=true")
-                        .getStatusLine().getStatusCode();
-                if (statusCode != 200) {
-                    logger.error("Got status code " + statusCode + " when stopping datafeeds");
-                }
+                adminClient.performRequest(new Request("POST", "/_xpack/ml/datafeeds/_all/_stop?force=true"));
             } catch (Exception e2) {
                 logger.warn("Force-closing all data feeds failed", e2);
             }
@@ -67,10 +58,7 @@ public class MlRestTestStateCleaner {
 
         for (Map<String, Object> datafeed : datafeeds) {
             String datafeedId = (String) datafeed.get("datafeed_id");
-            int statusCode = adminClient.performRequest("DELETE", "/_xpack/ml/datafeeds/" + datafeedId).getStatusLine().getStatusCode();
-            if (statusCode != 200) {
-                logger.error("Got status code " + statusCode + " when deleting datafeed " + datafeedId);
-            }
+            adminClient.performRequest(new Request("DELETE", "/_xpack/ml/datafeeds/" + datafeedId));
         }
     }
 
@@ -86,17 +74,11 @@ public class MlRestTestStateCleaner {
         }
 
         try {
-            int statusCode = adminClient
-                    .performRequest("POST", "/_xpack/ml/anomaly_detectors/_all/_close")
-                    .getStatusLine().getStatusCode();
-            if (statusCode != 200) {
-                logger.error("Got status code " + statusCode + " when closing all jobs");
-            }
+            adminClient.performRequest(new Request("POST", "/_xpack/ml/anomaly_detectors/_all/_close"));
         } catch (Exception e1) {
             logger.warn("failed to close all jobs. Forcing closed", e1);
             try {
-                adminClient.performRequest("POST",
-                        "/_xpack/ml/anomaly_detectors/_all/_close?force=true");
+                adminClient.performRequest(new Request("POST", "/_xpack/ml/anomaly_detectors/_all/_close?force=true"));
             } catch (Exception e2) {
                 logger.warn("Force-closing all jobs failed", e2);
             }
@@ -106,10 +88,7 @@ public class MlRestTestStateCleaner {
 
         for (Map<String, Object> jobConfig : jobConfigs) {
             String jobId = (String) jobConfig.get("job_id");
-            int statusCode = adminClient.performRequest("DELETE", "/_xpack/ml/anomaly_detectors/" + jobId).getStatusLine().getStatusCode();
-            if (statusCode != 200) {
-                logger.error("Got status code " + statusCode + " when deleting job " + jobId);
-            }
+            adminClient.performRequest(new Request("DELETE", "/_xpack/ml/anomaly_detectors/" + jobId));
         }
     }
 }

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/rollup/RollupRestTestStateCleaner.java

@@ -6,6 +6,7 @@
 package org.elasticsearch.xpack.core.rollup;
 
 import org.apache.http.HttpStatus;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.RestClient;
 import org.elasticsearch.common.xcontent.support.XContentMapValues;
@@ -17,7 +18,6 @@ import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
-import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -35,8 +35,9 @@ public class RollupRestTestStateCleaner {
     private static void waitForPendingTasks(RestClient adminClient) throws Exception {
         ESTestCase.assertBusy(() -> {
             try {
-                Response response = adminClient.performRequest("GET", "/_cat/tasks",
-                        Collections.singletonMap("detailed", "true"));
+                Request request = new Request("GET", "/_cat/tasks");
+                request.addParameter("detailed", "true");
+                Response response = adminClient.performRequest(request);
                 if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                     try (BufferedReader responseReader = new BufferedReader(
                             new InputStreamReader(response.getEntity().getContent(), StandardCharsets.UTF_8))) {
@@ -63,7 +64,7 @@ public class RollupRestTestStateCleaner {
 
     @SuppressWarnings("unchecked")
     private static void deleteAllJobs(RestClient adminClient) throws Exception {
-        Response response = adminClient.performRequest("GET", "/_xpack/rollup/job/_all");
+        Response response = adminClient.performRequest(new Request("GET", "/_xpack/rollup/job/_all"));
         Map<String, Object> jobs = ESRestTestCase.entityAsMap(response);
         List<Map<String, Object>> jobConfigs =
                 (List<Map<String, Object>>) XContentMapValues.extractValue("jobs", jobs);
@@ -75,7 +76,7 @@ public class RollupRestTestStateCleaner {
         for (Map<String, Object> jobConfig : jobConfigs) {
             String jobId = (String) ((Map<String, Object>) jobConfig.get("config")).get("id");
             try {
-                response = adminClient.performRequest("DELETE", "/_xpack/rollup/job/" + jobId);
+                response = adminClient.performRequest(new Request("DELETE", "/_xpack/rollup/job/" + jobId));
             } catch (Exception e) {
                 // ok
             }

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/ssl/SSLConfigurationReloaderTests.java

@@ -78,6 +78,7 @@ public class SSLConfigurationReloaderTests extends ESTestCase {
     /**
      * Tests reloading a keystore that is used in the KeyManager of SSLContext
      */
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/32124")
     public void testReloadingKeyStore() throws Exception {
         assumeFalse("Can't run in a FIPS JVM", inFipsJvm());
         final Path tempDir = createTempDir();
@@ -191,6 +192,7 @@ public class SSLConfigurationReloaderTests extends ESTestCase {
      * Tests the reloading of SSLContext when the trust store is modified. The same store is used as a TrustStore (for the
      * reloadable SSLContext used in the HTTPClient) and as a KeyStore for the MockWebServer
      */
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/32124")
     public void testReloadingTrustStore() throws Exception {
         assumeFalse("Can't run in a FIPS JVM", inFipsJvm());
         Path tempDir = createTempDir();

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/test/rest/XPackRestTestHelper.java

@@ -10,6 +10,7 @@ import org.apache.http.HttpStatus;
 import org.apache.http.util.EntityUtils;
 import org.elasticsearch.Version;
 import org.elasticsearch.action.admin.cluster.node.tasks.list.ListTasksAction;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -25,12 +26,10 @@ import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.atomic.AtomicReference;
 
-import static java.util.Collections.singletonMap;
 import static org.junit.Assert.assertEquals;
 
 public final class XPackRestTestHelper {
@@ -47,8 +46,9 @@ public final class XPackRestTestHelper {
         ESTestCase.awaitBusy(() -> {
             String response;
             try {
-                response = EntityUtils
-                        .toString(client.performRequest("GET", "/_cat/nodes", singletonMap("h", "master,version")).getEntity());
+                Request request = new Request("GET", "/_cat/nodes");
+                request.addParameter("h", "master,version");
+                response = EntityUtils.toString(client.performRequest(request).getEntity());
             } catch (IOException e) {
                 throw new RuntimeException(e);
             }
@@ -67,7 +67,7 @@ public final class XPackRestTestHelper {
             ESTestCase.awaitBusy(() -> {
                 Map<?, ?> response;
                 try {
-                    String string = EntityUtils.toString(client.performRequest("GET", "/_template/" + template).getEntity());
+                    String string = EntityUtils.toString(client.performRequest(new Request("GET", "/_template/" + template)).getEntity());
                     response = XContentHelper.convertToMap(JsonXContent.jsonXContent, string, false);
                 } catch (ResponseException e) {
                     if (e.getResponse().getStatusLine().getStatusCode() == 404) {
@@ -89,8 +89,9 @@ public final class XPackRestTestHelper {
     public static void waitForPendingTasks(RestClient adminClient) throws Exception {
         ESTestCase.assertBusy(() -> {
             try {
-                Response response = adminClient.performRequest("GET", "/_cat/tasks",
-                        Collections.singletonMap("detailed", "true"));
+                Request request = new Request("GET", "/_cat/tasks");
+                request.addParameter("detailed", "true");
+                Response response = adminClient.performRequest(request);
                 // Check to see if there are tasks still active. We exclude the
                 // list tasks
                 // actions tasks form this otherwise we will always fail

x-pack/plugin/monitoring/src/main/java/org/elasticsearch/xpack/monitoring/exporter/http/PublishableHttpResource.java

@@ -9,6 +9,7 @@ import org.apache.http.HttpEntity;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.message.ParameterizedMessage;
 import org.apache.logging.log4j.util.Supplier;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -311,13 +312,15 @@ public abstract class PublishableHttpResource extends HttpResource {
                                                               final Set<Integer> exists, final Set<Integer> doesNotExist) {
         logger.trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, resourceOwnerName, resourceOwnerType);
 
-        final Set<Integer> expectedResponseCodes = Sets.union(exists, doesNotExist);
+
+        final Request request = new Request("GET", resourceBasePath + "/" + resourceName);
+        addParameters(request);
         // avoid exists and DNE parameters from being an exception by default
-        final Map<String, String> getParameters = new HashMap<>(parameters);
-        getParameters.put("ignore", expectedResponseCodes.stream().map(i -> i.toString()).collect(Collectors.joining(",")));
+        final Set<Integer> expectedResponseCodes = Sets.union(exists, doesNotExist);
+        request.addParameter("ignore", expectedResponseCodes.stream().map(i -> i.toString()).collect(Collectors.joining(",")));
 
         try {
-            final Response response = client.performRequest("GET", resourceBasePath + "/" + resourceName, getParameters);
+            final Response response = client.performRequest(request);
             final int statusCode = response.getStatusLine().getStatusCode();
 
             // checking the content is the job of whoever called this function by checking the tuple's response
@@ -385,8 +388,12 @@ public abstract class PublishableHttpResource extends HttpResource {
 
         boolean success = false;
 
+        final Request request = new Request("PUT", resourceBasePath + "/" + resourceName);
+        addParameters(request);
+        request.setEntity(body.get());
+
         try {
-            final Response response = client.performRequest("PUT", resourceBasePath + "/" + resourceName, parameters, body.get());
+            final Response response = client.performRequest(request);
             final int statusCode = response.getStatusLine().getStatusCode();
 
             // 200 or 201
@@ -431,12 +438,15 @@ public abstract class PublishableHttpResource extends HttpResource {
 
         boolean success = false;
 
+        Request request = new Request("DELETE", resourceBasePath + "/" + resourceName);
+        addParameters(request);
+        if (false == parameters.containsKey("ignore")) {
             // avoid 404 being an exception by default
-        final Map<String, String> deleteParameters = new HashMap<>(parameters);
-        deleteParameters.putIfAbsent("ignore", Integer.toString(RestStatus.NOT_FOUND.getStatus()));
+            request.addParameter("ignore", Integer.toString(RestStatus.NOT_FOUND.getStatus()));
+        }
 
         try {
-            final Response response = client.performRequest("DELETE", resourceBasePath + "/" + resourceName, deleteParameters);
+            final Response response = client.performRequest(request);
             final int statusCode = response.getStatusLine().getStatusCode();
 
             // 200 or 404 (not found is just as good as deleting it!)
@@ -498,4 +508,9 @@ public abstract class PublishableHttpResource extends HttpResource {
         return true;
     }
 
+    private void addParameters(Request request) {
+        for (Map.Entry<String, String> param : parameters.entrySet()) {
+            request.addParameter(param.getKey(), param.getValue());
+        }
+    }
 }

x-pack/plugin/monitoring/src/main/java/org/elasticsearch/xpack/monitoring/exporter/http/VersionHttpResource.java

@@ -9,6 +9,7 @@ import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.message.ParameterizedMessage;
 import org.apache.logging.log4j.util.Supplier;
 import org.elasticsearch.Version;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.RestClient;
 import org.elasticsearch.common.logging.Loggers;
@@ -16,7 +17,6 @@ import org.elasticsearch.common.xcontent.XContentHelper;
 import org.elasticsearch.common.xcontent.json.JsonXContent;
 
 import java.io.IOException;
-import java.util.Collections;
 import java.util.Map;
 import java.util.Objects;
 
@@ -27,11 +27,6 @@ public class VersionHttpResource extends HttpResource {
 
     private static final Logger logger = Loggers.getLogger(VersionHttpResource.class);
 
-    /**
-     * The parameters to pass with every version request to limit the output to just the version number.
-     */
-    public static final Map<String, String> PARAMETERS = Collections.singletonMap("filter_path", "version.number");
-
     /**
      * The minimum supported version of Elasticsearch.
      */
@@ -59,7 +54,9 @@ public class VersionHttpResource extends HttpResource {
         logger.trace("checking [{}] to ensure that it supports the minimum version [{}]", resourceOwnerName, minimumVersion);
 
         try {
-            return validateVersion(client.performRequest("GET", "/", PARAMETERS));
+            Request request = new Request("GET", "/");
+            request.addParameter("filter_path", "version.number");
+            return validateVersion(client.performRequest(request));
         } catch (IOException | RuntimeException e) {
             logger.error(
                     (Supplier<?>)() ->

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/exporter/http/AbstractPublishableHttpResourceTestCase.java

@@ -11,6 +11,7 @@ import org.apache.http.RequestLine;
 import org.apache.http.StatusLine;
 import org.apache.http.entity.ContentType;
 import org.apache.http.entity.StringEntity;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -20,6 +21,8 @@ import org.elasticsearch.common.util.set.Sets;
 import org.elasticsearch.rest.RestStatus;
 import org.elasticsearch.test.ESTestCase;
 import org.elasticsearch.xpack.monitoring.exporter.http.PublishableHttpResource.CheckResponse;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mockito;
 
 import java.io.IOException;
 import java.util.Map;
@@ -30,10 +33,10 @@ import java.util.stream.Collectors;
 import static org.elasticsearch.xpack.monitoring.exporter.http.PublishableHttpResource.GET_DOES_NOT_EXIST;
 import static org.elasticsearch.xpack.monitoring.exporter.http.PublishableHttpResource.GET_EXISTS;
 import static org.hamcrest.Matchers.is;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
+import static org.hamcrest.Matchers.instanceOf;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
+import static org.mockito.Mockito.verify;
 
 /**
  * Base test helper for any {@link PublishableHttpResource}.
@@ -87,7 +90,9 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
         final ResponseException responseException = responseException("GET", endpoint, failedCheckStatus());
         final Exception e = randomFrom(new IOException("expected"), new RuntimeException("expected"), responseException);
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenThrow(e);
+        Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
+        when(client.performRequest(request)).thenThrow(e);
 
         assertThat(resource.doCheck(client), is(CheckResponse.ERROR));
     }
@@ -123,7 +128,9 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
         final ResponseException responseException = responseException("DELETE", endpoint, failedCheckStatus());
         final Exception e = randomFrom(new IOException("expected"), new RuntimeException("expected"), responseException);
 
-        when(client.performRequest("DELETE", endpoint, deleteParameters(resource.getParameters()))).thenThrow(e);
+        Request request = new Request("DELETE", endpoint);
+        addParameters(request, deleteParameters(resource.getParameters()));
+        when(client.performRequest(request)).thenThrow(e);
 
         assertThat(resource.doCheck(client), is(CheckResponse.ERROR));
     }
@@ -173,9 +180,15 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final Exception e = randomFrom(new IOException("expected"), new RuntimeException("expected"));
 
-        when(client.performRequest(eq("PUT"), eq(endpoint), eq(resource.getParameters()), any(bodyType))).thenThrow(e);
+        when(client.performRequest(Mockito.any(Request.class))).thenThrow(e);
 
         assertThat(resource.doPublish(client), is(false));
+        ArgumentCaptor<Request> request = ArgumentCaptor.forClass(Request.class);
+        verify(client).performRequest(request.capture());
+        assertThat(request.getValue().getMethod(), is("PUT"));
+        assertThat(request.getValue().getEndpoint(), is(endpoint));
+        assertThat(request.getValue().getParameters(), is(resource.getParameters()));
+        assertThat(request.getValue().getEntity(), instanceOf(bodyType));
     }
 
     protected void assertParameters(final PublishableHttpResource resource) {
@@ -244,7 +257,9 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
                                          final String endpoint, final CheckResponse expected,
                                          final Response response)
             throws IOException {
-        when(client.performRequest("GET", endpoint, expectedParameters)).thenReturn(response);
+        Request request = new Request("GET", endpoint);
+        addParameters(request, expectedParameters);
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.doCheck(client), is(expected));
     }
@@ -257,9 +272,14 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final Response response = response("GET", endpoint, status);
 
-        when(client.performRequest(eq("PUT"), eq(endpoint), eq(resource.getParameters()), any(bodyType))).thenReturn(response);
+        ArgumentCaptor<Request> request = ArgumentCaptor.forClass(Request.class);
+        when(client.performRequest(request.capture())).thenReturn(response);
 
         assertThat(resource.doPublish(client), is(expected));
+        assertThat(request.getValue().getMethod(), is("PUT"));
+        assertThat(request.getValue().getEndpoint(), is(endpoint));
+        assertThat(request.getValue().getParameters(), is(resource.getParameters()));
+        assertThat(request.getValue().getEntity(), instanceOf(bodyType));
     }
 
     protected void doCheckAsDeleteWithStatusCode(final PublishableHttpResource resource,
@@ -277,7 +297,9 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
                                                  final String endpoint, final CheckResponse expected,
                                                  final Response response)
             throws IOException {
-        when(client.performRequest("DELETE", endpoint, deleteParameters(resource.getParameters()))).thenReturn(response);
+        Request request = new Request("DELETE", endpoint);
+        addParameters(request, deleteParameters(resource.getParameters()));
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.doCheck(client), is(expected));
     }
@@ -427,4 +449,9 @@ public abstract class AbstractPublishableHttpResourceTestCase extends ESTestCase
         return entity;
     }
 
+    protected void addParameters(Request request, Map<String, String> parameters) {
+        for (Map.Entry<String, String> param : parameters.entrySet()) {
+            request.addParameter(param.getKey(), param.getValue());
+        }
+    }
 }

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/exporter/http/HttpExporterResourceTests.java

@@ -10,6 +10,7 @@ import org.apache.http.StatusLine;
 import org.apache.http.entity.ContentType;
 import org.apache.http.entity.StringEntity;
 import org.elasticsearch.Version;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -23,6 +24,9 @@ import org.elasticsearch.rest.RestStatus;
 import org.elasticsearch.xpack.core.monitoring.exporter.MonitoringTemplateUtils;
 import org.elasticsearch.xpack.monitoring.exporter.ClusterAlertsUtil;
 import org.elasticsearch.xpack.monitoring.exporter.Exporter;
+import org.hamcrest.Description;
+import org.hamcrest.Matcher;
+import org.hamcrest.TypeSafeMatcher;
 import org.junit.Before;
 
 import java.io.IOException;
@@ -37,10 +41,9 @@ import static org.elasticsearch.xpack.core.monitoring.exporter.MonitoringTemplat
 import static org.elasticsearch.xpack.monitoring.exporter.http.PublishableHttpResource.CheckResponse.DOES_NOT_EXIST;
 import static org.elasticsearch.xpack.monitoring.exporter.http.PublishableHttpResource.CheckResponse.EXISTS;
 import static org.hamcrest.Matchers.hasSize;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.anyMapOf;
-import static org.mockito.Matchers.eq;
-import static org.mockito.Matchers.startsWith;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.startsWith;
+import static org.mockito.Matchers.argThat;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
@@ -101,7 +104,8 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         final HttpEntity entity = new StringEntity("{\"version\":{\"number\":\"unknown\"}}", ContentType.APPLICATION_JSON);
 
         when(versionResponse.getEntity()).thenReturn(entity);
-        when(client.performRequest(eq("GET"), eq("/"), anyMapOf(String.class, String.class))).thenReturn(versionResponse);
+        when(client.performRequest(argThat(new RequestMatcher(is("GET"), is("/")))))
+            .thenReturn(versionResponse);
 
         assertTrue(resources.isDirty());
         assertFalse(resources.checkAndPublish(client));
@@ -140,7 +144,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             final List<Response> otherResponses = getTemplateResponses(1, successful, unsuccessful);
 
             // last check fails implies that N - 2 publishes succeeded!
-            when(client.performRequest(eq("GET"), startsWith("/_template/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_template/")))))
                 .thenReturn(first, otherResponses.toArray(new Response[otherResponses.size()]))
                 .thenThrow(exception);
             whenSuccessfulPutTemplates(otherResponses.size() + 1);
@@ -148,7 +152,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             expectedGets += 1 + successful + unsuccessful;
             expectedPuts = (successfulFirst ? 0 : 1) + unsuccessful;
         } else {
-            when(client.performRequest(eq("GET"), startsWith("/_template/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_template/")))))
                     .thenThrow(exception);
         }
 
@@ -185,7 +189,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             whenGetTemplates(successful, unsuccessful + 2);
 
             // previous publishes must have succeeded
-            when(client.performRequest(eq("PUT"), startsWith("/_template/"), anyMapOf(String.class, String.class), any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_template/")))))
                     .thenReturn(firstSuccess, otherResponses.toArray(new Response[otherResponses.size()]))
                     .thenThrow(exception);
 
@@ -197,7 +201,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             // fail the check so that it has to attempt the PUT
             whenGetTemplates(0, 1);
 
-            when(client.performRequest(eq("PUT"), startsWith("/_template/"), anyMapOf(String.class, String.class), any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_template/")))))
                     .thenThrow(exception);
         }
 
@@ -238,7 +242,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             }
 
             // last check fails
-            when(client.performRequest(eq("GET"), startsWith("/_ingest/pipeline/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_ingest/pipeline/")))))
                     .thenReturn(first)
                     .thenThrow(exception);
             if (successfulFirst == false) {
@@ -248,7 +252,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             expectedGets = EXPECTED_PIPELINES;
             expectedPuts = successfulFirst ? 0 : 1;
         } else {
-            when(client.performRequest(eq("GET"), startsWith("/_ingest/pipeline/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_ingest/pipeline/")))))
                     .thenThrow(exception);
         }
 
@@ -285,10 +289,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             whenGetPipelines(0, 2);
 
             // previous publishes must have succeeded
-            when(client.performRequest(eq("PUT"),
-                                       startsWith("/_ingest/pipeline/"),
-                                       anyMapOf(String.class, String.class),
-                                       any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_ingest/pipeline/")))))
                     .thenReturn(firstSuccess)
                     .thenThrow(exception);
 
@@ -300,10 +301,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             // fail the check so that it has to attempt the PUT
             whenGetPipelines(0, 1);
 
-            when(client.performRequest(eq("PUT"),
-                                       startsWith("/_ingest/pipeline/"),
-                                       anyMapOf(String.class, String.class),
-                                       any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_ingest/pipeline/")))))
                     .thenThrow(exception);
         }
 
@@ -334,7 +332,8 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         whenSuccessfulPutPipelines(unsuccessfulGetPipelines);
 
         // there's only one check
-        when(client.performRequest(eq("GET"), eq("/_xpack"), anyMapOf(String.class, String.class))).thenThrow(exception);
+        when(client.performRequest(argThat(new RequestMatcher(is("GET"), is("/_xpack")))))
+                .thenThrow(exception);
 
         assertTrue(resources.isDirty());
         assertFalse(resources.checkAndPublish(client));
@@ -382,7 +381,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
                 final List<Response> otherResponses = getWatcherResponses(1, successful, unsuccessful);
 
                 // last check fails implies that N - 2 publishes succeeded!
-                when(client.performRequest(eq("GET"), startsWith("/_xpack/watcher/watch/"), anyMapOf(String.class, String.class)))
+                when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_xpack/watcher/watch/")))))
                         .thenReturn(first, otherResponses.toArray(new Response[otherResponses.size()]))
                         .thenThrow(exception);
                 whenSuccessfulPutWatches(otherResponses.size() + 1);
@@ -398,7 +397,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
                 // there is no form of an unsuccessful delete; only success or error
                 final List<Response> responses = successfulDeleteResponses(successful);
 
-                when(client.performRequest(eq("DELETE"), startsWith("/_xpack/watcher/watch/"), anyMapOf(String.class, String.class)))
+                when(client.performRequest(argThat(new RequestMatcher(is("DELETE"), startsWith("/_xpack/watcher/watch/")))))
                         .thenReturn(responses.get(0), responses.subList(1, successful).toArray(new Response[successful - 1]))
                         .thenThrow(exception);
 
@@ -407,7 +406,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         } else {
             final String method = validLicense ? "GET" : "DELETE";
 
-            when(client.performRequest(eq(method), startsWith("/_xpack/watcher/watch/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is(method), startsWith("/_xpack/watcher/watch/")))))
                     .thenThrow(exception);
         }
 
@@ -463,10 +462,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             whenGetWatches(successful, unsuccessful + 2);
 
             // previous publishes must have succeeded
-            when(client.performRequest(eq("PUT"),
-                                       startsWith("/_xpack/watcher/watch/"),
-                                       anyMapOf(String.class, String.class),
-                                       any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(firstSuccess, otherResponses.toArray(new Response[otherResponses.size()]))
                     .thenThrow(exception);
 
@@ -478,10 +474,7 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
             // fail the check so that it has to attempt the PUT
             whenGetWatches(0, 1);
 
-            when(client.performRequest(eq("PUT"),
-                                       startsWith("/_xpack/watcher/watch/"),
-                                       anyMapOf(String.class, String.class),
-                                       any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_xpack/watcher/watch/")))))
                     .thenThrow(exception);
         }
 
@@ -715,17 +708,18 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         final HttpEntity entity = new StringEntity("{\"version\":{\"number\":\"" + Version.CURRENT + "\"}}", ContentType.APPLICATION_JSON);
 
         when(versionResponse.getEntity()).thenReturn(entity);
-        when(client.performRequest(eq("GET"), eq("/"), anyMapOf(String.class, String.class))).thenReturn(versionResponse);
+        when(client.performRequest(argThat(new RequestMatcher(is("GET"), is("/")))))
+                .thenReturn(versionResponse);
     }
 
     private void whenGetTemplates(final int successful, final int unsuccessful) throws IOException {
         final List<Response> gets = getTemplateResponses(0, successful, unsuccessful);
 
         if (gets.size() == 1) {
-            when(client.performRequest(eq("GET"), startsWith("/_template/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_template/")))))
                     .thenReturn(gets.get(0));
         } else {
-            when(client.performRequest(eq("GET"), startsWith("/_template/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_template/")))))
                     .thenReturn(gets.get(0), gets.subList(1, gets.size()).toArray(new Response[gets.size() - 1]));
         }
     }
@@ -735,10 +729,10 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
 
         // empty is possible if they all exist
         if (successful == 1) {
-            when(client.performRequest(eq("PUT"), startsWith("/_template/"), anyMapOf(String.class, String.class), any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_template/")))))
                     .thenReturn(successfulPuts.get(0));
         } else if (successful > 1) {
-            when(client.performRequest(eq("PUT"), startsWith("/_template/"), anyMapOf(String.class, String.class), any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_template/")))))
                     .thenReturn(successfulPuts.get(0), successfulPuts.subList(1, successful).toArray(new Response[successful - 1]));
         }
     }
@@ -747,10 +741,10 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         final List<Response> gets = getPipelineResponses(0, successful, unsuccessful);
 
         if (gets.size() == 1) {
-            when(client.performRequest(eq("GET"), startsWith("/_ingest/pipeline/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_ingest/pipeline/")))))
                     .thenReturn(gets.get(0));
         } else {
-            when(client.performRequest(eq("GET"), startsWith("/_ingest/pipeline/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_ingest/pipeline/")))))
                     .thenReturn(gets.get(0), gets.subList(1, gets.size()).toArray(new Response[gets.size() - 1]));
         }
     }
@@ -760,16 +754,10 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
 
         // empty is possible if they all exist
         if (successful == 1) {
-            when(client.performRequest(eq("PUT"),
-                                       startsWith("/_ingest/pipeline/"),
-                                       anyMapOf(String.class, String.class),
-                                       any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_ingest/pipeline/")))))
                     .thenReturn(successfulPuts.get(0));
         } else if (successful > 1) {
-            when(client.performRequest(eq("PUT"),
-                                       startsWith("/_ingest/pipeline/"),
-                                       anyMapOf(String.class, String.class),
-                                       any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_ingest/pipeline/")))))
                     .thenReturn(successfulPuts.get(0), successfulPuts.subList(1, successful).toArray(new Response[successful - 1]));
         }
     }
@@ -787,7 +775,8 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         final Response successfulGet = response("GET", "_xpack", successfulCheckStatus(), entity);
 
         // empty is possible if they all exist
-        when(client.performRequest(eq("GET"), eq("/_xpack"), anyMapOf(String.class, String.class))).thenReturn(successfulGet);
+        when(client.performRequest(argThat(new RequestMatcher(is("GET"), is("/_xpack")))))
+                .thenReturn(successfulGet);
     }
 
     private void whenWatcherCannotBeUsed() throws IOException {
@@ -805,17 +794,18 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         }
 
         // empty is possible if they all exist
-        when(client.performRequest(eq("GET"), eq("/_xpack"), anyMapOf(String.class, String.class))).thenReturn(response);
+        when(client.performRequest(argThat(new RequestMatcher(is("GET"), is("/_xpack")))))
+                .thenReturn(response);
     }
 
     private void whenGetWatches(final int successful, final int unsuccessful) throws IOException {
         final List<Response> gets = getWatcherResponses(0, successful, unsuccessful);
 
         if (gets.size() == 1) {
-            when(client.performRequest(eq("GET"), startsWith("/_xpack/watcher/watch/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(gets.get(0));
         } else {
-            when(client.performRequest(eq("GET"), startsWith("/_xpack/watcher/watch/"), anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(gets.get(0), gets.subList(1, gets.size()).toArray(new Response[gets.size() - 1]));
         }
     }
@@ -825,16 +815,10 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
 
         // empty is possible if they all exist
         if (successful == 1) {
-            when(client.performRequest(eq("PUT"),
-                    startsWith("/_xpack/watcher/watch/"),
-                    anyMapOf(String.class, String.class),
-                    any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(successfulPuts.get(0));
         } else if (successful > 1) {
-            when(client.performRequest(eq("PUT"),
-                    startsWith("/_xpack/watcher/watch/"),
-                    anyMapOf(String.class, String.class),
-                    any(HttpEntity.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(successfulPuts.get(0), successfulPuts.subList(1, successful).toArray(new Response[successful - 1]));
         }
     }
@@ -844,64 +828,55 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
 
         // empty is possible if they all exist
         if (successful == 1) {
-            when(client.performRequest(eq("DELETE"),
-                                       startsWith("/_xpack/watcher/watch/"),
-                                       anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("DELETE"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(successfulDeletes.get(0));
         } else if (successful > 1) {
-            when(client.performRequest(eq("DELETE"),
-                                       startsWith("/_xpack/watcher/watch/"),
-                                       anyMapOf(String.class, String.class)))
+            when(client.performRequest(argThat(new RequestMatcher(is("DELETE"), startsWith("/_xpack/watcher/watch/")))))
                     .thenReturn(successfulDeletes.get(0), successfulDeletes.subList(1, successful).toArray(new Response[successful - 1]));
         }
     }
+
     private void verifyVersionCheck() throws IOException {
-        verify(client).performRequest(eq("GET"), eq("/"), anyMapOf(String.class, String.class));
+        verify(client).performRequest(argThat(new RequestMatcher(is("GET"), is("/"))));
     }
 
     private void verifyGetTemplates(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("GET"), startsWith("/_template/"), anyMapOf(String.class, String.class));
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_template/"))));
     }
 
     private void verifyPutTemplates(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("PUT"),                            // method
-                                                     startsWith("/_template/"),            // endpoint
-                                                     anyMapOf(String.class, String.class), // parameters (e.g., timeout)
-                                                     any(HttpEntity.class));               // raw template
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_template/"))));
     }
 
     private void verifyGetPipelines(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("GET"), startsWith("/_ingest/pipeline/"), anyMapOf(String.class, String.class));
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_ingest/pipeline/"))));
     }
 
     private void verifyPutPipelines(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("PUT"),                       // method
-                                                     startsWith("/_ingest/pipeline/"),     // endpoint
-                                                     anyMapOf(String.class, String.class), // parameters (e.g., timeout)
-                                                     any(HttpEntity.class));               // raw template
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_ingest/pipeline/"))));
     }
 
     private void verifyWatcherCheck() throws IOException {
-        verify(client).performRequest(eq("GET"), eq("/_xpack"), anyMapOf(String.class, String.class));
+        verify(client).performRequest(argThat(new RequestMatcher(is("GET"), is("/_xpack"))));
     }
 
     private void verifyDeleteWatches(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("DELETE"),                    // method
-                                                     startsWith("/_xpack/watcher/watch/"), // endpoint
-                                                     anyMapOf(String.class, String.class));// parameters (e.g., timeout)
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("DELETE"), startsWith("/_xpack/watcher/watch/"))));
     }
 
     private void verifyGetWatches(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("GET"),
-                                                     startsWith("/_xpack/watcher/watch/"),
-                                                     anyMapOf(String.class, String.class));
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("GET"), startsWith("/_xpack/watcher/watch/"))));
     }
 
     private void verifyPutWatches(final int called) throws IOException {
-        verify(client, times(called)).performRequest(eq("PUT"),                            // method
-                                                     startsWith("/_xpack/watcher/watch/"),      // endpoint
-                                                     anyMapOf(String.class, String.class), // parameters (e.g., timeout)
-                                                     any(HttpEntity.class));               // raw template
+        verify(client, times(called))
+                .performRequest(argThat(new RequestMatcher(is("PUT"), startsWith("/_xpack/watcher/watch/"))));
     }
 
     private ClusterService mockClusterService(final ClusterState state) {
@@ -922,4 +897,24 @@ public class HttpExporterResourceTests extends AbstractPublishableHttpResourceTe
         return state;
     }
 
+    private static class RequestMatcher extends TypeSafeMatcher<Request> {
+        private final Matcher<String> method;
+        private final Matcher<String> endpoint;
+
+        private RequestMatcher(Matcher<String> method, Matcher<String> endpoint) {
+            this.method = method;
+            this.endpoint = endpoint;
+        }
+
+        @Override
+        protected boolean matchesSafely(Request item) {
+            return method.matches(item.getMethod()) && endpoint.matches(item.getEndpoint());
+        }
+
+        @Override
+        public void describeTo(Description description) {
+            description.appendText("method is ").appendDescriptionOf(method);
+            description.appendText(" and endpoint is ").appendDescriptionOf(endpoint);
+        }
+    }
 }

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/exporter/http/PublishableHttpResourceTests.java

@@ -10,6 +10,7 @@ import org.apache.http.HttpEntity;
 import org.apache.http.entity.ContentType;
 import org.apache.http.entity.StringEntity;
 import org.apache.logging.log4j.Logger;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.ResponseException;
 import org.elasticsearch.client.RestClient;
@@ -61,13 +62,15 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final RestStatus failedStatus = failedCheckStatus();
         final Response response = response("GET", endpoint, failedStatus);
+        final Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         sometimesAssertSimpleCheckForResource(client, logger, resourceBasePath, resourceName, resourceType, CheckResponse.ERROR, response);
 
         verify(logger).trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("GET", endpoint, getParameters(resource.getParameters()));
+        verify(client).performRequest(request);
         verify(logger).error(any(org.apache.logging.log4j.util.Supplier.class), any(ResponseException.class));
 
         verifyNoMoreInteractions(client, logger);
@@ -95,8 +98,10 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final Response response = response("GET", endpoint, failedStatus);
         final XContent xContent = mock(XContent.class);
         final int minimumVersion = randomInt();
+        final Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.versionCheckForResource(client, logger,
                                                     resourceBasePath, resourceName, resourceType, owner, ownerType,
@@ -104,7 +109,7 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
                    is(CheckResponse.ERROR));
 
         verify(logger).trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("GET", endpoint, getParameters(resource.getParameters()));
+        verify(client).performRequest(request);
         verify(logger).error(any(org.apache.logging.log4j.util.Supplier.class), any(ResponseException.class));
 
         verifyNoMoreInteractions(client, logger);
@@ -117,8 +122,10 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final HttpEntity entity = entityForResource(CheckResponse.ERROR, resourceName, minimumVersion);
         final Response response = response("GET", endpoint, okStatus, entity);
         final XContent xContent = mock(XContent.class);
+        final Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.versionCheckForResource(client, logger,
                                                     resourceBasePath, resourceName, resourceType, owner, ownerType,
@@ -127,7 +134,7 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
 
         verify(logger).trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, owner, ownerType);
         verify(logger).debug("{} [{}] found on the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("GET", endpoint, getParameters(resource.getParameters()));
+        verify(client).performRequest(request);
         verify(logger).error(any(org.apache.logging.log4j.util.Supplier.class), any(ResponseException.class));
 
         verifyNoMoreInteractions(client, logger);
@@ -140,12 +147,14 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final Exception e = randomFrom(new IOException("expected"), new RuntimeException("expected"), responseException);
         final Response response = e == responseException ? responseException.getResponse() : null;
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenThrow(e);
+        Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
+        when(client.performRequest(request)).thenThrow(e);
 
         sometimesAssertSimpleCheckForResource(client, logger, resourceBasePath, resourceName, resourceType, CheckResponse.ERROR, response);
 
         verify(logger).trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("GET", endpoint, getParameters(resource.getParameters()));
+        verify(client).performRequest(request);
         verify(logger).error(any(org.apache.logging.log4j.util.Supplier.class), eq(e));
 
         verifyNoMoreInteractions(client, logger);
@@ -162,13 +171,16 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
     public void testPutResourceFalseWithException() throws IOException {
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final Exception e = randomFrom(new IOException("expected"), new RuntimeException("expected"));
+        final Request request = new Request("PUT", endpoint);
+        addParameters(request, resource.getParameters());
+        request.setEntity(entity);
 
-        when(client.performRequest("PUT", endpoint, resource.getParameters(), entity)).thenThrow(e);
+        when(client.performRequest(request)).thenThrow(e);
 
         assertThat(resource.putResource(client, logger, resourceBasePath, resourceName, body, resourceType, owner, ownerType), is(false));
 
         verify(logger).trace("uploading {} [{}] to the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("PUT", endpoint, resource.getParameters(), entity);
+        verify(client).performRequest(request);
         verify(logger).error(any(org.apache.logging.log4j.util.Supplier.class), eq(e));
 
         verifyNoMoreInteractions(client, logger);
@@ -190,13 +202,15 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final ResponseException responseException = responseException("DELETE", endpoint, failedStatus);
         final Exception e = randomFrom(new IOException("expected"), new RuntimeException("expected"), responseException);
         final Map<String, String> deleteParameters = deleteParameters(resource.getParameters());
+        final Request request = new Request("DELETE", endpoint);
+        addParameters(request, deleteParameters);
 
-        when(client.performRequest("DELETE", endpoint, deleteParameters)).thenThrow(e);
+        when(client.performRequest(request)).thenThrow(e);
 
         assertThat(resource.deleteResource(client, logger, resourceBasePath, resourceName, resourceType, owner, ownerType), is(false));
 
         verify(logger).trace("deleting {} [{}] from the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("DELETE", endpoint, deleteParameters);
+        verify(client).performRequest(request);
         verify(logger).error(any(org.apache.logging.log4j.util.Supplier.class), eq(e));
 
         verifyNoMoreInteractions(client, logger);
@@ -277,13 +291,15 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
             throws IOException {
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final Response response = response("GET", endpoint, status);
+        final Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         sometimesAssertSimpleCheckForResource(client, logger, resourceBasePath, resourceName, resourceType, expected, response);
 
         verify(logger).trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("GET", endpoint, getParameters(resource.getParameters()));
+        verify(client).performRequest(request);
 
         if (expected == CheckResponse.EXISTS || expected == CheckResponse.DOES_NOT_EXIST) {
             verify(response).getStatusLine();
@@ -310,8 +326,10 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final HttpEntity entity = status == RestStatus.OK ? entityForResource(expected, resourceName, minimumVersion) : null;
         final Response response = response("GET", endpoint, status, entity);
         final XContent xContent = XContentType.JSON.xContent();
+        final Request request = new Request("GET", endpoint);
+        addParameters(request, getParameters(resource.getParameters()));
 
-        when(client.performRequest("GET", endpoint, getParameters(resource.getParameters()))).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.versionCheckForResource(client, logger,
                                                     resourceBasePath, resourceName, resourceType, owner, ownerType,
@@ -319,7 +337,7 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
                    is(expected));
 
         verify(logger).trace("checking if {} [{}] exists on the [{}] {}", resourceType, resourceName, owner, ownerType);
-        verify(client).performRequest("GET", endpoint, getParameters(resource.getParameters()));
+        verify(client).performRequest(request);
 
         if (shouldReplace || expected == CheckResponse.EXISTS) {
             verify(response).getStatusLine();
@@ -341,13 +359,16 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
     private void assertPutResource(final RestStatus status, final boolean expected) throws IOException {
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final Response response = response("PUT", endpoint, status);
+        final Request request = new Request("PUT", endpoint);
+        addParameters(request, resource.getParameters());
+        request.setEntity(entity);
 
-        when(client.performRequest("PUT", endpoint, resource.getParameters(), entity)).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.putResource(client, logger, resourceBasePath, resourceName, body, resourceType, owner, ownerType),
                    is(expected));
 
-        verify(client).performRequest("PUT", endpoint, resource.getParameters(), entity);
+        verify(client).performRequest(request);
         verify(response).getStatusLine();
 
         verify(logger).trace("uploading {} [{}] to the [{}] {}", resourceType, resourceName, owner, ownerType);
@@ -388,12 +409,14 @@ public class PublishableHttpResourceTests extends AbstractPublishableHttpResourc
         final String endpoint = concatenateEndpoint(resourceBasePath, resourceName);
         final Response response = response("DELETE", endpoint, status);
         final Map<String, String> deleteParameters = deleteParameters(resource.getParameters());
+        final Request request = new Request("DELETE", endpoint);
+        addParameters(request, deleteParameters);
 
-        when(client.performRequest("DELETE", endpoint, deleteParameters)).thenReturn(response);
+        when(client.performRequest(request)).thenReturn(response);
 
         assertThat(resource.deleteResource(client, logger, resourceBasePath, resourceName, resourceType, owner, ownerType), is(expected));
 
-        verify(client).performRequest("DELETE", endpoint, deleteParameters);
+        verify(client).performRequest(request);
         verify(response).getStatusLine();
 
         verify(logger).trace("deleting {} [{}] from the [{}] {}", resourceType, resourceName, owner, ownerType);

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/exporter/http/VersionHttpResourceTests.java

@@ -6,8 +6,9 @@
 package org.elasticsearch.xpack.monitoring.exporter.http;
 
 import org.apache.http.entity.ContentType;
-import org.apache.http.entity.StringEntity;
+import org.apache.http.nio.entity.NStringEntity;
 import org.elasticsearch.Version;
+import org.elasticsearch.client.Request;
 import org.elasticsearch.client.Response;
 import org.elasticsearch.client.RestClient;
 import org.elasticsearch.test.ESTestCase;
@@ -73,8 +74,9 @@ public class VersionHttpResourceTests extends ESTestCase {
     }
 
     public void testDoCheckAndPublishFailedWithIOException() throws IOException {
-        // request fails for some reason
-        when(client.performRequest("GET", "/", VersionHttpResource.PARAMETERS)).thenThrow(new IOException("expected"));
+        Request request = new Request("GET", "/");
+        request.addParameter("filter_path", "version.number");
+        when(client.performRequest(request)).thenThrow(new IOException("expected"));
 
         final VersionHttpResource resource = new VersionHttpResource(owner, Version.CURRENT);
 
@@ -82,12 +84,14 @@ public class VersionHttpResourceTests extends ESTestCase {
     }
 
     private Response responseForJSON(final String json) throws IOException {
-        final StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
+        final NStringEntity entity = new NStringEntity(json, ContentType.APPLICATION_JSON);
 
         final Response response = mock(Response.class);
         when(response.getEntity()).thenReturn(entity);
 
-        when(client.performRequest("GET", "/", VersionHttpResource.PARAMETERS)).thenReturn(response);
+        Request request = new Request("GET", "/");
+        request.addParameter("filter_path", "version.number");
+        when(client.performRequest(request)).thenReturn(response);
 
         return response;
     }

x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/ssl/SSLReloadIntegTests.java

@@ -7,6 +7,7 @@ package org.elasticsearch.xpack.ssl;
 
 
 import org.elasticsearch.ElasticsearchException;
+import org.elasticsearch.bootstrap.JavaVersion;
 import org.elasticsearch.common.settings.MockSecureSettings;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.transport.TransportAddress;
@@ -92,6 +93,7 @@ public class SSLReloadIntegTests extends SecurityIntegTestCase {
     }
 
     public void testThatSSLConfigurationReloadsOnModification() throws Exception {
+        assumeFalse("test fails on JDK 11 currently", JavaVersion.current().compareTo(JavaVersion.parse("11")) < 0);
         Path keyPath = createTempDir().resolve("testnode_updated.pem");
         Path certPath = createTempDir().resolve("testnode_updated.crt");
         Files.copy(getDataPath("/org/elasticsearch/xpack/security/transport/ssl/certs/simple/testnode_updated.pem"), keyPath);

x-pack/plugin/src/test/resources/rest-api-spec/test/ssl/10_basic.yml

@@ -4,7 +4,6 @@
       xpack.ssl.certificates: {}
 
   - length: { $body: 1 }
-  - match: { $body.0.path: "test-node.jks" }
-  - match: { $body.0.format: "jks" }
-  - match: { $body.0.alias: "test-node" }
+  - match: { $body.0.path: "testnode.crt" }
+  - match: { $body.0.format: "PEM" }
   - match: { $body.0.has_private_key: true }

x-pack/qa/core-rest-tests-with-security/src/test/resources/rest-api-spec/test/rankeval/10_rankeval.yml

@@ -52,5 +52,5 @@
           "metric" : { "precision": { "ignore_unlabeled" : true }}
         }
 
-  - match: { quality_level: 1 }
+  - match: { metric_score: 1 }
 

x-pack/qa/full-cluster-restart/build.gradle

@@ -125,7 +125,7 @@ subprojects {
 
   String output = "${buildDir}/generated-resources/${project.name}"
   task copyTestNodeKeystore(type: Copy) {
-    from project(xpackModule('core'))
+    from project(':x-pack:plugin:core')
       .file('src/test/resources/org/elasticsearch/xpack/security/transport/ssl/certs/simple/testnode.jks')
     into outputDir
   }

x-pack/qa/ml-native-multi-node-tests/build.gradle

@@ -18,59 +18,45 @@ integTestRunner {
     systemProperty 'es.set.netty.runtime.available.processors', 'false'
 }
 
-// location of generated keystores and certificates
+// location for keys and certificates
 File keystoreDir = new File(project.buildDir, 'keystore')
-
-// Generate the node's keystore
-File nodeKeystore = new File(keystoreDir, 'test-node.jks')
-task createNodeKeyStore(type: LoggedExec) {
-    doFirst {
-        if (nodeKeystore.parentFile.exists() == false) {
-            nodeKeystore.parentFile.mkdirs()
+File nodeKey = file("$keystoreDir/testnode.pem")
+File nodeCert = file("$keystoreDir/testnode.crt")
+// Add key and certs to test classpath: it expects it there
+task copyKeyCerts(type: Copy) {
+    from(project(':x-pack:plugin:core').file('src/test/resources/org/elasticsearch/xpack/security/transport/ssl/certs/simple/')) {
+        include 'testnode.crt', 'testnode.pem'
     }
-        if (nodeKeystore.exists()) {
-            delete nodeKeystore
+    into keystoreDir
 }
-    }
-    executable = new File(project.runtimeJavaHome, 'bin/keytool')
-    standardInput = new ByteArrayInputStream('FirstName LastName\nUnit\nOrganization\nCity\nState\nNL\nyes\n\n'.getBytes('UTF-8'))
-    args '-genkey',
-            '-alias', 'test-node',
-            '-keystore', nodeKeystore,
-            '-keyalg', 'RSA',
-            '-keysize', '2048',
-            '-validity', '712',
-            '-dname', 'CN=smoke-test-plugins-ssl',
-            '-keypass', 'keypass',
-            '-storepass', 'keypass'
-}
-
-// Add keystores to test classpath: it expects it there
+// Add keys and cets to test classpath: it expects it there
 sourceSets.test.resources.srcDir(keystoreDir)
-processTestResources.dependsOn(createNodeKeyStore)
+processTestResources.dependsOn(copyKeyCerts)
 
 integTestCluster {
-    dependsOn createNodeKeyStore
+    dependsOn copyKeyCerts
     setting 'xpack.security.enabled', 'true'
     setting 'xpack.ml.enabled', 'true'
     setting 'logger.org.elasticsearch.xpack.ml.datafeed', 'TRACE'
     setting 'xpack.monitoring.enabled', 'false'
     setting 'xpack.security.authc.token.enabled', 'true'
     setting 'xpack.security.transport.ssl.enabled', 'true'
-    setting 'xpack.security.transport.ssl.keystore.path', nodeKeystore.name
+    setting 'xpack.security.transport.ssl.key', nodeKey.name
+    setting 'xpack.security.transport.ssl.certificate', nodeCert.name
     setting 'xpack.security.transport.ssl.verification_mode', 'certificate'
     setting 'xpack.security.audit.enabled', 'true'
     setting 'xpack.license.self_generated.type', 'trial'
 
     keystoreSetting 'bootstrap.password', 'x-pack-test-password'
-    keystoreSetting 'xpack.security.transport.ssl.keystore.secure_password', 'keypass'
+    keystoreSetting 'xpack.security.transport.ssl.secure_key_passphrase', 'testnode'
 
     numNodes = 3
 
     setupCommand 'setupDummyUser',
             'bin/elasticsearch-users', 'useradd', 'x_pack_rest_user', '-p', 'x-pack-test-password', '-r', 'superuser'
 
-    extraConfigFile nodeKeystore.name, nodeKeystore
+    extraConfigFile nodeKey.name, nodeKey
+    extraConfigFile nodeCert.name, nodeCert
 
     waitCondition = { node, ant ->
         File tmpFile = new File(node.cwd, 'wait.success')

x-pack/qa/ml-native-multi-node-tests/src/test/java/org/elasticsearch/xpack/ml/integration/MlNativeAutodetectIntegTestCase.java

@@ -124,9 +124,11 @@ abstract class MlNativeAutodetectIntegTestCase extends ESIntegTestCase {
 
     @Override
     protected Settings externalClusterClientSettings() {
-        Path keyStore;
+        Path key;
+        Path certificate;
         try {
-            keyStore = PathUtils.get(getClass().getResource("/test-node.jks").toURI());
+            key = PathUtils.get(getClass().getResource("/testnode.pem").toURI());
+            certificate = PathUtils.get(getClass().getResource("/testnode.crt").toURI());
         } catch (URISyntaxException e) {
             throw new IllegalStateException("error trying to get keystore path", e);
         }
@@ -135,8 +137,9 @@ abstract class MlNativeAutodetectIntegTestCase extends ESIntegTestCase {
         builder.put(SecurityField.USER_SETTING.getKey(), "x_pack_rest_user:" + SecuritySettingsSourceField.TEST_PASSWORD_SECURE_STRING);
         builder.put(XPackSettings.MACHINE_LEARNING_ENABLED.getKey(), true);
         builder.put("xpack.security.transport.ssl.enabled", true);
-        builder.put("xpack.security.transport.ssl.keystore.path", keyStore.toAbsolutePath().toString());
-        builder.put("xpack.security.transport.ssl.keystore.password", "keypass");
+        builder.put("xpack.security.transport.ssl.key", key.toAbsolutePath().toString());
+        builder.put("xpack.security.transport.ssl.certificate", certificate.toAbsolutePath().toString());
+        builder.put("xpack.security.transport.ssl.key_passphrase", "testnode");
         builder.put("xpack.security.transport.ssl.verification_mode", "certificate");
         return builder.build();
     }

x-pack/qa/rolling-upgrade/build.gradle

@@ -107,7 +107,7 @@ subprojects {
 
   String output = "${buildDir}/generated-resources/${project.name}"
   task copyTestNodeKeystore(type: Copy) {
-    from project(xpackModule('core'))
+    from project(':x-pack:plugin:core')
             .file('src/test/resources/org/elasticsearch/xpack/security/transport/ssl/certs/simple/testnode.jks')
     into outputDir
   }

x-pack/qa/smoke-test-plugins-ssl/build.gradle

@@ -4,7 +4,7 @@ import org.elasticsearch.gradle.plugin.PluginBuildPlugin
 import org.elasticsearch.gradle.test.NodeInfo
 
 import javax.net.ssl.HttpsURLConnection
-import javax.net.ssl.KeyManagerFactory
+import javax.net.ssl.KeyManager
 import javax.net.ssl.SSLContext
 import javax.net.ssl.TrustManagerFactory
 import java.nio.charset.StandardCharsets
@@ -26,135 +26,27 @@ task copyXPackPluginProps(type: Copy) {
 }
 project.sourceSets.test.output.dir(outputDir, builtBy: copyXPackPluginProps)
 
-// needed to be consistent with ssl host checking
-Object san = new SanEvaluator()
-
 // location of generated keystores and certificates
 File keystoreDir = new File(project.buildDir, 'keystore')
-
-// Generate the node's keystore
-File nodeKeystore = new File(keystoreDir, 'test-node.jks')
-task createNodeKeyStore(type: LoggedExec) {
-  doFirst {
-    if (nodeKeystore.parentFile.exists() == false) {
-      nodeKeystore.parentFile.mkdirs()
-    }
-    if (nodeKeystore.exists()) {
-      delete nodeKeystore
-    }
-  }
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  standardInput = new ByteArrayInputStream('FirstName LastName\nUnit\nOrganization\nCity\nState\nNL\nyes\n\n'.getBytes('UTF-8'))
-  args '-genkey',
-          '-alias', 'test-node',
-          '-keystore', nodeKeystore,
-          '-keyalg', 'RSA',
-          '-keysize', '2048',
-          '-validity', '712',
-          '-dname', 'CN=smoke-test-plugins-ssl',
-          '-keypass', 'keypass',
-          '-storepass', 'keypass',
-          '-ext', san
-}
-
-// Generate the client's keystore
-File clientKeyStore = new File(keystoreDir, 'test-client.jks')
-task createClientKeyStore(type: LoggedExec) {
-  doFirst {
-    if (clientKeyStore.parentFile.exists() == false) {
-      clientKeyStore.parentFile.mkdirs()
-    }
-    if (clientKeyStore.exists()) {
-      delete clientKeyStore
-    }
-  }
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  standardInput = new ByteArrayInputStream('FirstName LastName\nUnit\nOrganization\nCity\nState\nNL\nyes\n\n'.getBytes('UTF-8'))
-  args '-genkey',
-          '-alias', 'test-client',
-          '-keystore', clientKeyStore,
-          '-keyalg', 'RSA',
-          '-keysize', '2048',
-          '-validity', '712',
-          '-dname', 'CN=smoke-test-plugins-ssl',
-          '-keypass', 'keypass',
-          '-storepass', 'keypass',
-          '-ext', san
-}
-
-// Export the node's certificate
-File nodeCertificate = new File(keystoreDir, 'test-node.cert')
-task exportNodeCertificate(type: LoggedExec) {
-  dependsOn createNodeKeyStore
-  doFirst {
-    if (nodeCertificate.parentFile.exists() == false) {
-      nodeCertificate.parentFile.mkdirs()
-    }
-    if (nodeCertificate.exists()) {
-      delete nodeCertificate
-    }
-  }
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  args '-export',
-          '-alias', 'test-node',
-          '-keystore', nodeKeystore,
-          '-storepass', 'keypass',
-          '-file', nodeCertificate
-}
-
-// Import the node certificate in the client's keystore
-task importNodeCertificateInClientKeyStore(type: LoggedExec) {
-  dependsOn createClientKeyStore, exportNodeCertificate
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  args '-import',
-          '-alias', 'test-node',
-          '-keystore', clientKeyStore,
-          '-storepass', 'keypass',
-          '-file', nodeCertificate,
-          '-noprompt'
-}
-
-// Export the client's certificate
-File clientCertificate = new File(keystoreDir, 'test-client.cert')
-task exportClientCertificate(type: LoggedExec) {
-  dependsOn createClientKeyStore
-  doFirst {
-    if (clientCertificate.parentFile.exists() == false) {
-      clientCertificate.parentFile.mkdirs()
-    }
-    if (clientCertificate.exists()) {
-      delete clientCertificate
-    }
-  }
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  args '-export',
-          '-alias', 'test-client',
-          '-keystore', clientKeyStore,
-          '-storepass', 'keypass',
-          '-file', clientCertificate
-}
-
-// Import the client certificate in the node's keystore
-task importClientCertificateInNodeKeyStore(type: LoggedExec) {
-  dependsOn createNodeKeyStore, exportClientCertificate
-  executable = new File(project.runtimeJavaHome, 'bin/keytool')
-  args '-import',
-          '-alias', 'test-client',
-          '-keystore', nodeKeystore,
-          '-storepass', 'keypass',
-          '-file', clientCertificate,
-          '-noprompt'
-}
-
-forbiddenPatterns {
-  exclude '**/*.cert'
-}
+File nodeKeystore = file("$keystoreDir/testnode.jks")
+File nodeKey = file("$keystoreDir/testnode.pem")
+File nodeCert = file("$keystoreDir/testnode.crt")
+File clientKeyStore = file("$keystoreDir/testclient.jks")
+File clientKey = file("$keystoreDir/testclient.pem")
+File clientCert = file("$keystoreDir/testclient.crt")
 
+// Add keystores to test classpath: it expects it there
+task copyKeyCerts(type: Copy) {
+  from('./') {
+      include '*.crt', '*.pem', '*.jks'
+  }
+  into keystoreDir
+}
 // Add keystores to test classpath: it expects it there
 sourceSets.test.resources.srcDir(keystoreDir)
-processTestResources.dependsOn(importNodeCertificateInClientKeyStore, importClientCertificateInNodeKeyStore)
+processTestResources.dependsOn(copyKeyCerts)
 
-integTestCluster.dependsOn(importClientCertificateInNodeKeyStore, importNodeCertificateInClientKeyStore)
+integTestCluster.dependsOn(copyKeyCerts)
 
 ext.pluginsCount = 0
 project(':plugins').getChildProjects().each { pluginName, pluginProject ->
@@ -167,8 +59,7 @@ integTestCluster {
   setting 'xpack.monitoring.collection.interval', '1s'
   setting 'xpack.monitoring.exporters._http.type', 'http'
   setting 'xpack.monitoring.exporters._http.enabled', 'false'
-  setting 'xpack.monitoring.exporters._http.ssl.truststore.path', clientKeyStore.name
-  setting 'xpack.monitoring.exporters._http.ssl.truststore.password', 'keypass'
+  setting 'xpack.ssl.certificate_authorities', 'testnode.crt'
   setting 'xpack.monitoring.exporters._http.auth.username', 'monitoring_agent'
   setting 'xpack.monitoring.exporters._http.auth.password', 'x-pack-test-password'
   setting 'xpack.monitoring.exporters._http.ssl.verification_mode', 'full'
@@ -176,15 +67,19 @@ integTestCluster {
   setting 'xpack.license.self_generated.type', 'trial'
   setting 'xpack.security.enabled', 'true'
   setting 'xpack.security.http.ssl.enabled', 'true'
-  setting 'xpack.security.http.ssl.keystore.path', nodeKeystore.name
-  keystoreSetting 'xpack.security.http.ssl.keystore.secure_password', 'keypass'
+  setting 'xpack.security.http.ssl.key', 'testnode.pem'
+  setting 'xpack.security.http.ssl.certificate', 'testnode.crt'
+  keystoreSetting 'xpack.security.http.ssl.secure_key_passphrase', 'testnode'
 
   setting 'xpack.index_lifecycle.enabled', 'false'
   setting 'xpack.ml.enabled', 'false'
-
-  // copy keystores into config/
+  // copy keystores, keys and certificates into config/
   extraConfigFile nodeKeystore.name, nodeKeystore
+  extraConfigFile nodeKey.name, nodeKey
+  extraConfigFile nodeCert.name, nodeCert
   extraConfigFile clientKeyStore.name, clientKeyStore
+  extraConfigFile clientKey.name, clientKey
+  extraConfigFile clientCert.name, clientCert
 
   setupCommand 'setupTestUser',
                'bin/elasticsearch-users', 'useradd', 'test_user', '-p', 'x-pack-test-password', '-r', 'superuser'
@@ -194,13 +89,12 @@ integTestCluster {
   waitCondition = { NodeInfo node, AntBuilder ant ->
     File tmpFile = new File(node.cwd, 'wait.success')
     KeyStore keyStore = KeyStore.getInstance("JKS");
-    keyStore.load(clientKeyStore.newInputStream(), 'keypass'.toCharArray());
-    KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
-    kmf.init(keyStore, 'keypass'.toCharArray());
+    keyStore.load(clientKeyStore.newInputStream(), 'testclient'.toCharArray());
     TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
     tmf.init(keyStore);
+    // We don't need a KeyManager as there won't be client auth required so pass an empty array
     SSLContext sslContext = SSLContext.getInstance("TLSv1.2");
-    sslContext.init(kmf.getKeyManagers(), tmf.getTrustManagers(), new SecureRandom());
+    sslContext.init(new KeyManager[0], tmf.getTrustManagers(), new SecureRandom());
     for (int i = 0; i < 10; i++) {
       // we use custom wait logic here for HTTPS
       HttpsURLConnection httpURLConnection = null;
@@ -246,159 +140,3 @@ processTestResources {
     MavenFilteringHack.filter(it, expansions)
   }
 }
-
-/** A lazy evaluator to find the san to use for certificate generation. */
-class SanEvaluator {
-
-  private static String san = null
-
-  String toString() {
-    synchronized (SanEvaluator.class) {
-      if (san == null) {
-        san = getSubjectAlternativeNameString()
-      }
-    }
-    return san
-  }
-
-  // Code stolen from NetworkUtils/InetAddresses/NetworkAddress to support SAN
-  /** Return all interfaces (and subinterfaces) on the system */
-  private static List<NetworkInterface> getInterfaces() throws SocketException {
-    List<NetworkInterface> all = new ArrayList<>();
-    addAllInterfaces(all, Collections.list(NetworkInterface.getNetworkInterfaces()));
-    Collections.sort(all, new Comparator<NetworkInterface>() {
-      @Override
-      public int compare(NetworkInterface left, NetworkInterface right) {
-        return Integer.compare(left.getIndex(), right.getIndex());
-      }
-    });
-    return all;
-  }
-
-  /** Helper for getInterfaces, recursively adds subinterfaces to {@code target} */
-  private static void addAllInterfaces(List<NetworkInterface> target, List<NetworkInterface> level) {
-    if (!level.isEmpty()) {
-      target.addAll(level);
-      for (NetworkInterface intf : level) {
-        addAllInterfaces(target, Collections.list(intf.getSubInterfaces()));
-      }
-    }
-  }
-
-  private static String getSubjectAlternativeNameString() {
-    List<InetAddress> list = new ArrayList<>();
-    for (NetworkInterface intf : getInterfaces()) {
-      if (intf.isUp()) {
-        // NOTE: some operating systems (e.g. BSD stack) assign a link local address to the loopback interface
-        // while technically not a loopback address, some of these treat them as one (e.g. OS X "localhost") so we must too,
-        // otherwise things just won't work out of box. So we include all addresses from loopback interfaces.
-        for (InetAddress address : Collections.list(intf.getInetAddresses())) {
-          if (intf.isLoopback() || address.isLoopbackAddress()) {
-            list.add(address);
-          }
-        }
-      }
-    }
-    if (list.isEmpty()) {
-      throw new IllegalArgumentException("no up-and-running loopback addresses found, got " + getInterfaces());
-    }
-
-    StringBuilder builder = new StringBuilder("san=");
-    for (int i = 0; i < list.size(); i++) {
-      InetAddress address = list.get(i);
-      String hostAddress;
-      if (address instanceof Inet6Address) {
-        hostAddress = compressedIPV6Address((Inet6Address)address);
-      } else {
-        hostAddress = address.getHostAddress();
-      }
-      builder.append("ip:").append(hostAddress);
-      String hostname = address.getHostName();
-      if (hostname.equals(address.getHostAddress()) == false) {
-        builder.append(",dns:").append(hostname);
-      }
-
-      if (i != (list.size() - 1)) {
-        builder.append(",");
-      }
-    }
-
-    return builder.toString();
-  }
-
-  private static String compressedIPV6Address(Inet6Address inet6Address) {
-    byte[] bytes = inet6Address.getAddress();
-    int[] hextets = new int[8];
-    for (int i = 0; i < hextets.length; i++) {
-      hextets[i] =  (bytes[2 * i] & 255) << 8 | bytes[2 * i + 1] & 255;
-    }
-    compressLongestRunOfZeroes(hextets);
-    return hextetsToIPv6String(hextets);
-  }
-
-  /**
-   * Identify and mark the longest run of zeroes in an IPv6 address.
-   *
-   * <p>Only runs of two or more hextets are considered.  In case of a tie, the
-   * leftmost run wins.  If a qualifying run is found, its hextets are replaced
-   * by the sentinel value -1.
-   *
-   * @param hextets {@code int[]} mutable array of eight 16-bit hextets
-   */
-  private static void compressLongestRunOfZeroes(int[] hextets) {
-    int bestRunStart = -1;
-    int bestRunLength = -1;
-    int runStart = -1;
-    for (int i = 0; i < hextets.length + 1; i++) {
-      if (i < hextets.length && hextets[i] == 0) {
-        if (runStart < 0) {
-          runStart = i;
-        }
-      } else if (runStart >= 0) {
-        int runLength = i - runStart;
-        if (runLength > bestRunLength) {
-          bestRunStart = runStart;
-          bestRunLength = runLength;
-        }
-        runStart = -1;
-      }
-    }
-    if (bestRunLength >= 2) {
-      Arrays.fill(hextets, bestRunStart, bestRunStart + bestRunLength, -1);
-    }
-  }
-
-  /**
-   * Convert a list of hextets into a human-readable IPv6 address.
-   *
-   * <p>In order for "::" compression to work, the input should contain negative
-   * sentinel values in place of the elided zeroes.
-   *
-   * @param hextets {@code int[]} array of eight 16-bit hextets, or -1s
-   */
-  private static String hextetsToIPv6String(int[] hextets) {
-    /*
-     * While scanning the array, handle these state transitions:
-     *   start->num => "num"     start->gap => "::"
-     *   num->num   => ":num"    num->gap   => "::"
-     *   gap->num   => "num"     gap->gap   => ""
-     */
-    StringBuilder buf = new StringBuilder(39);
-    boolean lastWasNumber = false;
-    for (int i = 0; i < hextets.length; i++) {
-      boolean thisIsNumber = hextets[i] >= 0;
-      if (thisIsNumber) {
-        if (lastWasNumber) {
-          buf.append(':');
-        }
-        buf.append(Integer.toHexString(hextets[i]));
-      } else {
-        if (i == 0 || lastWasNumber) {
-          buf.append("::");
-        }
-      }
-      lastWasNumber = thisIsNumber;
-    }
-    return buf.toString();
-  }
-}

x-pack/qa/smoke-test-plugins-ssl/src/test/java/org/elasticsearch/smoketest/SmokeTestPluginsSslClientYamlTestSuiteIT.java

@@ -29,7 +29,7 @@ public class SmokeTestPluginsSslClientYamlTestSuiteIT extends ESClientYamlSuiteT
 
     private static final String USER = "test_user";
     private static final String PASS = "x-pack-test-password";
-    private static final String KEYSTORE_PASS = "keypass";
+    private static final String KEYSTORE_PASS = "testnode";
 
     public SmokeTestPluginsSslClientYamlTestSuiteIT(@Name("yaml") ClientYamlTestCandidate testCandidate) {
         super(testCandidate);
@@ -45,7 +45,7 @@ public class SmokeTestPluginsSslClientYamlTestSuiteIT extends ESClientYamlSuiteT
     @BeforeClass
     public static void getKeyStore() {
       try {
-          keyStore = PathUtils.get(SmokeTestPluginsSslClientYamlTestSuiteIT.class.getResource("/test-node.jks").toURI());
+          keyStore = PathUtils.get(SmokeTestPluginsSslClientYamlTestSuiteIT.class.getResource("/testnode.jks").toURI());
       } catch (URISyntaxException e) {
           throw new ElasticsearchException("exception while reading the store", e);
       }

x-pack/qa/smoke-test-plugins-ssl/testclient.crt

@@ -0,0 +1,23 @@
+-----BEGIN CERTIFICATE-----
+MIID1zCCAr+gAwIBAgIJALnUl/KSS74pMA0GCSqGSIb3DQEBCwUAMEoxDDAKBgNV
+BAoTA29yZzEWMBQGA1UECxMNZWxhc3RpY3NlYXJjaDEiMCAGA1UEAxMZRWxhc3Rp
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+dDYubG9jYWxkb21haW42hwR/AAABhxAAAAAAAAAAAAAAAAAAAAABMA0GCSqGSIb3
+DQEBCwUAA4IBAQANvAkddfLxn4/BCY4LY/1ET3d7ZRldjFTyjjHRYJ3CYBXWVahM
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+4onUD7bOCJgfsiUwdiCkDbfN9Yum8OIpmBRs
+-----END CERTIFICATE-----

x-pack/qa/smoke-test-plugins-ssl/testclient.pem

@@ -0,0 +1,30 @@
+-----BEGIN RSA PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: DES-EDE3-CBC,C98A45E4AFC263C2
+
+wLuUEXldYc54r4ryWd6jw6UMGYwn6+ibGKHp4sD92l42lmI2UrCT/Mb/E0O+KMMy
+pHgc5/dBWkXgMiqDyLIhHk4kgT40rdw5W5lZkAA4Qt/Yzd+rbscTvzp09zrF6Fll
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+agwlMpHoBq79/ZRUJR3xPLkIGgw4g+RPt45D9eKsEsV4vqy8SFlgaoJ2mKUKleZy
+i7D9ouzMKQ3sYE4eQVQ5o3K8ZPn5eozCwCVIp7jGSsuvDpLA9peZSwWPfc5y8JFD
+/64usCt1J8Mv/e9NVllC8ZA+ZmDitTiwLZysczpMOaFqqeUbk9EJst38n4nBzRV2
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+SrFaaNLf1hMwGLAJjIcQRxa3yZbjFXVx1Bp4hh8rKNWaOItjavNtNg==
+-----END RSA PRIVATE KEY-----

x-pack/qa/smoke-test-plugins-ssl/testnode.crt

@@ -0,0 +1,23 @@
+-----BEGIN CERTIFICATE-----
+MIID0zCCArugAwIBAgIJALi5bDfjMszLMA0GCSqGSIb3DQEBCwUAMEgxDDAKBgNV
+BAoTA29yZzEWMBQGA1UECxMNZWxhc3RpY3NlYXJjaDEgMB4GA1UEAxMXRWxhc3Rp
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+y4g6cTMM3S/UMt5/+aIB2JAuMKyuD+A=
+-----END CERTIFICATE-----