Use Gradle-version specific source sets

Instead of using Gradle-version specific compilation options, use distinct source sets. This also allows compilation of buildSrc/build-tools under IDEs that
don't understand the version-specific compilation options.

Relates to #22669

buildSrc/build.gradle

@@ -95,15 +95,16 @@ dependencies {
 // Gradle version-specific options (allows build to run with Gradle 2.13 as well as 2.14+/3.+)
 if (GradleVersion.current() == GradleVersion.version("2.13")) {
   // ProgressLogger(-Factory) classes are part of the public Gradle API
-  // Add default imports for (org.gradle.logging)
-  compileGroovy.groovyOptions.configurationScript = file('src/compile/groovy/gradle-2.13-loggers.groovy')
+  sourceSets.main.groovy.srcDir 'src/main/gradle-2.13-groovy'
+
   dependencies {
     compile 'ru.vyarus:gradle-animalsniffer-plugin:1.0.1' // last version compatible with Gradle 2.13
   }
 } else {
   // Gradle 2.14+ removed ProgressLogger(-Factory) classes from the public APIs
-  // Use logging dependency and add default imports for "org.gradle.internal.logging.progress"
-  compileGroovy.groovyOptions.configurationScript = file('src/compile/groovy/gradle-2.14-loggers.groovy')
+  // Use logging dependency instead
+  sourceSets.main.groovy.srcDir 'src/main/gradle-2.14-groovy'
+
   dependencies {
     compileOnly "org.gradle:gradle-logging:${GradleVersion.current().getVersion()}"
     compile 'ru.vyarus:gradle-animalsniffer-plugin:1.2.0' // Gradle 2.14 requires a version > 1.0.1

buildSrc/src/main/gradle-2.13-groovy/org/elasticsearch/gradle/ProgressLoggerFactoryInjection.groovy

@@ -0,0 +1,35 @@
+/*
+ * 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.gradle
+
+import org.gradle.logging.ProgressLoggerFactory
+
+import javax.inject.Inject
+
+/**
+ * Allows to inject a ProgressLoggerFactory to tasks in src/main/groovy
+ * without requiring the corresponding import of ProgressLoggerFactory,
+ * making it compatible with both Gradle 2.13 and 2.14+.
+ */
+trait ProgressLoggerFactoryInjection {
+    @Inject
+    ProgressLoggerFactory getProgressLoggerFactory() {
+        throw new UnsupportedOperationException()
+    }
+}

buildSrc/src/main/gradle-2.13-groovy/org/elasticsearch/gradle/ProgressLoggerWrapper.groovy

@@ -0,0 +1,33 @@
+/*
+ * 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.gradle
+
+import org.gradle.logging.ProgressLogger
+
+/**
+ * Wraps a ProgressLogger so that code in src/main/groovy does not need to
+ * define imports on Gradle 2.13/2.14+ ProgressLoggers
+ */
+class ProgressLoggerWrapper {
+    ProgressLogger progressLogger
+
+    ProgressLoggerWrapper(ProgressLogger progressLogger) {
+        this.progressLogger = progressLogger
+    }
+}

buildSrc/src/main/gradle-2.14-groovy/org/elasticsearch/gradle/ProgressLoggerFactoryInjection.groovy

@@ -0,0 +1,35 @@
+/*
+ * 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.gradle
+
+import org.gradle.internal.logging.progress.ProgressLoggerFactory
+
+import javax.inject.Inject
+
+/**
+ * Allows to inject a ProgressLoggerFactory to tasks in src/main/groovy
+ * without requiring the corresponding import of ProgressLoggerFactory,
+ * making it compatible with both Gradle 2.13 and 2.14+.
+ */
+trait ProgressLoggerFactoryInjection {
+    @Inject
+    ProgressLoggerFactory getProgressLoggerFactory() {
+        throw new UnsupportedOperationException()
+    }
+}

buildSrc/src/main/gradle-2.14-groovy/org/elasticsearch/gradle/ProgressLoggerWrapper.groovy

@@ -0,0 +1,33 @@
+/*
+ * 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.gradle
+
+import org.gradle.internal.logging.progress.ProgressLogger
+
+/**
+ * Wraps a ProgressLogger so that code in src/main/groovy does not need to
+ * define imports on Gradle 2.13/2.14+ ProgressLoggers
+ */
+class ProgressLoggerWrapper {
+    ProgressLogger progressLogger
+
+    ProgressLoggerWrapper(ProgressLogger progressLogger) {
+        this.progressLogger = progressLogger
+    }
+}

buildSrc/src/main/groovy/com/carrotsearch/gradle/junit4/RandomizedTestingTask.groovy

@@ -8,6 +8,7 @@ import org.apache.tools.ant.BuildException
 import org.apache.tools.ant.DefaultLogger
 import org.apache.tools.ant.RuntimeConfigurable
 import org.apache.tools.ant.UnknownElement
+import org.elasticsearch.gradle.ProgressLoggerFactoryInjection
 import org.gradle.api.DefaultTask
 import org.gradle.api.file.FileCollection
 import org.gradle.api.file.FileTreeElement
@@ -21,9 +22,7 @@ import org.gradle.api.tasks.util.PatternFilterable
 import org.gradle.api.tasks.util.PatternSet
 import org.gradle.util.ConfigureUtil
 
-import javax.inject.Inject
-
-class RandomizedTestingTask extends DefaultTask {
+class RandomizedTestingTask extends DefaultTask implements ProgressLoggerFactoryInjection {
 
     // TODO: change to "executable" to match gradle test params?
     @Optional
@@ -89,11 +88,6 @@ class RandomizedTestingTask extends DefaultTask {
         listenersConfig.listeners.add(new TestReportLogger(logger: logger, config: testLoggingConfig))
     }
 
-    @Inject
-    ProgressLoggerFactory getProgressLoggerFactory() {
-        throw new UnsupportedOperationException();
-    }
-
     void jvmArgs(Iterable<String> arguments) {
         jvmArgs.addAll(arguments)
     }

buildSrc/src/main/groovy/com/carrotsearch/gradle/junit4/TestProgressLogger.groovy

@@ -25,6 +25,7 @@ import com.carrotsearch.ant.tasks.junit4.events.aggregated.AggregatedStartEvent
 import com.carrotsearch.ant.tasks.junit4.events.aggregated.AggregatedSuiteResultEvent
 import com.carrotsearch.ant.tasks.junit4.events.aggregated.AggregatedTestResultEvent
 import com.carrotsearch.ant.tasks.junit4.listeners.AggregatedEventListener
+import org.elasticsearch.gradle.ProgressLoggerWrapper
 
 import static com.carrotsearch.ant.tasks.junit4.FormattingUtils.formatDurationInSeconds
 import static com.carrotsearch.ant.tasks.junit4.events.aggregated.TestStatus.ERROR
@@ -50,9 +51,7 @@ import static java.lang.Math.max
  * quick.
  */
 class TestProgressLogger implements AggregatedEventListener {
-    /** Factory to build a progress logger when testing starts */
-    ProgressLoggerFactory factory
-    ProgressLogger progressLogger
+    ProgressLoggerWrapper progressLoggerWrapper
     int totalSuites
     int totalSlaves
 
@@ -77,14 +76,17 @@ class TestProgressLogger implements AggregatedEventListener {
     /* Note that we probably overuse volatile here but it isn't hurting us and
       lets us move things around without worying about breaking things. */
 
+    TestProgressLogger(Map args) {
+        progressLoggerWrapper = new ProgressLoggerWrapper(args.factory.newOperation(TestProgressLogger))
+        progressLoggerWrapper.progressLogger.setDescription('Randomized test runner')
+    }
+
     @Subscribe
     void onStart(AggregatedStartEvent e) throws IOException {
         totalSuites = e.suiteCount
         totalSlaves = e.slaveCount
-        progressLogger = factory.newOperation(TestProgressLogger)
-        progressLogger.setDescription('Randomized test runner')
-        progressLogger.started()
-        progressLogger.progress(
+        progressLoggerWrapper.progressLogger.started()
+        progressLoggerWrapper.progressLogger.progress(
             "Starting JUnit4 for ${totalSuites} suites on ${totalSlaves} jvms")
 
         suitesFormat = "%0${widthForTotal(totalSuites)}d"
@@ -176,7 +178,7 @@ class TestProgressLogger implements AggregatedEventListener {
             log += "J${sprintf(slavesFormat, eventSlave)} "
         }
         log += "completed ${eventDescription}"
-        progressLogger.progress(log)
+        progressLoggerWrapper.progressLogger.progress(log)
     }
 
     private static int widthForTotal(int total) {

buildSrc/src/main/groovy/org/elasticsearch/gradle/vagrant/TapLoggerOutputStream.groovy

@@ -20,6 +20,7 @@ package org.elasticsearch.gradle.vagrant
 
 import com.carrotsearch.gradle.junit4.LoggingOutputStream
 import groovy.transform.PackageScope
+import org.elasticsearch.gradle.ProgressLoggerWrapper
 import org.gradle.api.GradleScriptException
 import org.gradle.api.logging.Logger
 
@@ -36,7 +37,7 @@ import java.util.regex.Matcher
  * entire TAP stream at once and won't parse it stream-wise.
  */
 public class TapLoggerOutputStream extends LoggingOutputStream {
-    private final ProgressLogger progressLogger
+    private final ProgressLoggerWrapper progressLoggerWrapper
     private boolean isStarted = false
     private final Logger logger
     private int testsCompleted = 0
@@ -47,14 +48,14 @@ public class TapLoggerOutputStream extends LoggingOutputStream {
 
     TapLoggerOutputStream(Map args) {
         logger = args.logger
-        progressLogger = args.factory.newOperation(VagrantLoggerOutputStream)
-        progressLogger.setDescription("TAP output for `${args.command}`")
+        progressLoggerWrapper = new ProgressLoggerWrapper(args.factory.newOperation(VagrantLoggerOutputStream))
+        progressLoggerWrapper.progressLogger.setDescription("TAP output for `${args.command}`")
     }
 
     @Override
     public void flush() {
         if (isStarted == false) {
-            progressLogger.started()
+            progressLoggerWrapper.progressLogger.started()
             isStarted = true
         }
         if (end == start) return
@@ -103,7 +104,7 @@ public class TapLoggerOutputStream extends LoggingOutputStream {
 
         String counts = sprintf(countsFormat,
                 [testsCompleted, testsFailed, testsSkipped, testCount])
-        progressLogger.progress("Tests $counts, $status [$suiteName] $testName")
+        progressLoggerWrapper.progressLogger.progress("Tests $counts, $status [$suiteName] $testName")
         if (!success) {
             logger.warn(line)
         }

buildSrc/src/main/groovy/org/elasticsearch/gradle/vagrant/VagrantCommandTask.groovy

@@ -19,16 +19,15 @@
 package org.elasticsearch.gradle.vagrant
 
 import org.apache.commons.io.output.TeeOutputStream
+import org.elasticsearch.gradle.ProgressLoggerFactoryInjection
 import org.elasticsearch.gradle.LoggedExec
 import org.gradle.api.tasks.Input
 
-import javax.inject.Inject
-
 /**
  * Runs a vagrant command. Pretty much like Exec task but with a nicer output
  * formatter and defaults to `vagrant` as first part of commandLine.
  */
-public class VagrantCommandTask extends LoggedExec {
+public class VagrantCommandTask extends LoggedExec implements ProgressLoggerFactoryInjection {
 
     @Input
     String boxName
@@ -56,9 +55,4 @@ public class VagrantCommandTask extends LoggedExec {
               stuff starts with ==> $box */
             squashedPrefix: "==> $boxName: ")
     }
-
-    @Inject
-    ProgressLoggerFactory getProgressLoggerFactory() {
-        throw new UnsupportedOperationException();
-    }
 }

buildSrc/src/main/groovy/org/elasticsearch/gradle/vagrant/VagrantLoggerOutputStream.groovy

@@ -19,7 +19,7 @@
 package org.elasticsearch.gradle.vagrant
 
 import com.carrotsearch.gradle.junit4.LoggingOutputStream
-import org.gradle.api.logging.Logger
+import org.elasticsearch.gradle.ProgressLoggerWrapper
 
 /**
  * Adapts an OutputStream being written to by vagrant into a ProcessLogger. It
@@ -45,7 +45,7 @@ import org.gradle.api.logging.Logger
 public class VagrantLoggerOutputStream extends LoggingOutputStream {
     private static final String HEADING_PREFIX = '==> '
 
-    private final ProgressLogger progressLogger
+    private final ProgressLoggerWrapper progressLoggerWrapper
     private boolean isStarted = false
     private String squashedPrefix
     private String lastLine = ''
@@ -53,15 +53,15 @@ public class VagrantLoggerOutputStream extends LoggingOutputStream {
     private String heading = ''
 
     VagrantLoggerOutputStream(Map args) {
-        progressLogger = args.factory.newOperation(VagrantLoggerOutputStream)
-        progressLogger.setDescription("Vagrant output for `$args.command`")
+        progressLoggerWrapper = new ProgressLoggerWrapper(args.factory.newOperation(VagrantLoggerOutputStream))
+        progressLoggerWrapper.progressLogger.setDescription("Vagrant output for `$args.command`")
         squashedPrefix = args.squashedPrefix
     }
 
     @Override
     public void flush() {
         if (isStarted == false) {
-            progressLogger.started()
+            progressLoggerWrapper.progressLogger.started()
             isStarted = true
         }
         if (end == start) return
@@ -96,6 +96,6 @@ public class VagrantLoggerOutputStream extends LoggingOutputStream {
         } else {
             return
         }
-        progressLogger.progress(line)
+        progressLoggerWrapper.progressLogger.progress(line)
     }
 }