Merge pull request #13036 from jasontedor/limit-type-name-length

Limit type name length

core/src/main/java/org/elasticsearch/index/mapper/MapperService.java

@@ -261,6 +261,9 @@ public class MapperService extends AbstractIndexComponent implements Closeable {
             if (mapper.type().length() == 0) {
                 throw new InvalidTypeNameException("mapping type name is empty");
             }
+            if (Version.indexCreated(indexSettings).onOrAfter(Version.V_2_0_0_beta1) && mapper.type().length() > 255) {
+                throw new InvalidTypeNameException("mapping type name [" + mapper.type() + "] is too long; limit is length 255 but was [" + mapper.type().length() + "]");
+            }
             if (mapper.type().charAt(0) == '_') {
                 throw new InvalidTypeNameException("mapping type name [" + mapper.type() + "] can't start with '_'");
             }

core/src/test/java/org/elasticsearch/index/mapper/MapperServiceTest.java

@@ -19,12 +19,18 @@
 
 package org.elasticsearch.index.mapper;
 
+import org.elasticsearch.Version;
+import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
 import org.elasticsearch.test.ESSingleNodeTestCase;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
+import static org.elasticsearch.test.VersionUtils.getFirstVersion;
+import static org.elasticsearch.test.VersionUtils.getPreviousVersion;
+import static org.elasticsearch.test.VersionUtils.randomVersionBetween;
 import static org.hamcrest.CoreMatchers.containsString;
+import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.Matchers.hasToString;
 
 public class MapperServiceTest extends ESSingleNodeTestCase {
@@ -46,4 +52,39 @@ public class MapperServiceTest extends ESSingleNodeTestCase {
                 .execute()
                 .actionGet();
     }
+
+    @Test
+    public void testThatLongTypeNameIsNotRejectedOnPreElasticsearchVersionTwo() {
+        String index = "text-index";
+        String field = "field";
+        String type = new String(new char[256]).replace("\0", "a");
+
+        CreateIndexResponse response =
+                client()
+                        .admin()
+                        .indices()
+                        .prepareCreate(index)
+                        .setSettings(settings(randomVersionBetween(random(), getFirstVersion(), getPreviousVersion(Version.V_2_0_0_beta1))))
+                        .addMapping(type, field, "type=string")
+                        .execute()
+                        .actionGet();
+        assertNotNull(response);
+    }
+
+    @Test
+    public void testTypeNameTooLong() {
+        String index = "text-index";
+        String field = "field";
+        String type = new String(new char[256]).replace("\0", "a");
+
+        expectedException.expect(MapperParsingException.class);
+        expectedException.expect(hasToString(containsString("mapping type name [" + type + "] is too long; limit is length 255 but was [256]")));
+        client()
+                .admin()
+                .indices()
+                .prepareCreate(index)
+                .addMapping(type, field, "type=string")
+                .execute()
+                .actionGet();
+    }
 }

core/src/test/java/org/elasticsearch/test/VersionUtils.java

@@ -65,9 +65,15 @@ public class VersionUtils {
         return Collections.unmodifiableList(SORTED_VERSIONS);
     }
 
+    public static Version getPreviousVersion(Version version) {
+        int index = SORTED_VERSIONS.indexOf(version);
+        assert index > 0;
+        return SORTED_VERSIONS.get(index - 1);
+    }
+
     /** Returns the {@link Version} before the {@link Version#CURRENT} */
     public static Version getPreviousVersion() {
-        Version version = SORTED_VERSIONS.get(SORTED_VERSIONS.size() - 2);
+        Version version = getPreviousVersion(Version.CURRENT);
         assert version.before(Version.CURRENT);
         return version;
     }