Build: Switch mapper attachments to gradle

This change switches the plugin to use gradle as the build system, and
updates the master branch to track elasticsearch master.

.gitignore

@@ -12,3 +12,6 @@
 /.local-execution-hints.log
 /.local-*-execution-hints.log
 /eclipse-build/
+build/
+generated-resources/
+.gradle/

build.gradle

@@ -0,0 +1,83 @@
+/*
+ * 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.
+ */
+
+import org.elasticsearch.gradle.ElasticsearchProperties
+
+buildscript {
+  repositories {
+    mavenCentral()
+    maven {
+      name 'sonatype-snapshots'
+      url 'http://oss.sonatype.org/content/repositories/snapshots/'
+    }
+    jcenter()
+  }
+  dependencies {
+    classpath 'org.elasticsearch.gradle:build-tools:3.0.0-SNAPSHOT'
+  }
+}
+apply plugin: 'idea'
+apply plugin: 'eclipse'
+apply plugin: 'elasticsearch.esplugin'
+
+esplugin {
+  description 'The mapper attachments plugin adds the attachment type to Elasticsearch using Apache Tika.'
+  classname 'org.elasticsearch.plugin.mapper.attachments.MapperAttachmentsPlugin'
+}
+
+project.group = 'org.elasticsearch'
+project.version = ElasticsearchProperties.version
+project.ext.luceneVersion = ElasticsearchProperties.luceneVersion
+repositories {
+  mavenCentral()
+  maven {
+    name 'sonatype-snapshots'
+    url 'http://oss.sonatype.org/content/repositories/snapshots/'
+  }
+  if (luceneVersion.contains('-snapshot')) {
+    String revision = (luceneVersion =~ /\d\.\d\.\d-snapshot-(\d+)/)[0][1]
+    maven {
+      name 'lucene-snapshots'
+      url "http://s3.amazonaws.com/download.elasticsearch.org/lucenesnapshots/${revision}"
+    }
+  }
+}
+
+dependencies {
+  compile('org.apache.tika:tika-parsers:1.10') {
+    // TODO: is all of edu.ucar incompatibile with apache2 license? if so, we can exclude the group?
+    // Not Apache2 License compatible
+    exclude group: 'edu.ucar', module: 'netcdf'
+    exclude group: 'edu.ucar', module: 'cdm'
+    exclude group: 'edu.ucar', module: 'httpservices'
+    exclude group: 'edu.ucar', module: 'grib'
+    exclude group: 'edu.ucar', module: 'netcdf4'
+    exclude group: 'com.uwyn', module: 'jhighlight'
+    // ES core already has these
+    exclude group: 'org.aw2.asm', module: 'asm-debug-all'
+    exclude group: 'commons-logging', module: 'commons-logging-api'
+  }
+}
+
+compileJava.options.compilerArgs << '-Xlint:-cast,-deprecation,-rawtypes'
+
+forbiddenPatterns {
+  exclude '**/*.docx'
+  exclude '**/*.pdf'
+}

src/main/java/org/elasticsearch/index/mapper/attachment/AttachmentMapper.java

@@ -26,6 +26,7 @@
 import org.apache.tika.language.LanguageIdentifier;
 import org.apache.tika.metadata.Metadata;
 import org.elasticsearch.Version;
+import org.elasticsearch.common.collect.Iterators;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.logging.ESLogger;
 import org.elasticsearch.common.logging.ESLoggerFactory;
@@ -58,7 +59,7 @@
  *      }
  * }
  * </pre>
- * <p/>
+ * <p>
  * _content_length = Specify the maximum amount of characters to extract from the attachment. If not specified, then the default for
  * tika is 100,000 characters. Caution is required when setting large values as this can cause memory issues.
  */
@@ -624,8 +625,9 @@ public void merge(Mapper mergeWith, MergeResult mergeResult) throws MergeMapping
     }
 
     @Override
+    @SuppressWarnings("unchecked")
     public Iterator<Mapper> iterator() {
-        List<FieldMapper> extras = Arrays.asList(
+        List<Mapper> extras = Arrays.asList(
                 contentMapper,
                 dateMapper,
                 titleMapper,
@@ -635,7 +637,7 @@ public Iterator<Mapper> iterator() {
                 contentTypeMapper,
                 contentLengthMapper,
                 languageMapper);
-        return CollectionUtils.concat(super.iterator(), extras.iterator());
+        return Iterators.concat(super.iterator(), extras.iterator());
     }
 
     @Override

src/main/java/org/elasticsearch/plugin/mapper/attachments/MapperAttachmentsPlugin.java

@@ -19,16 +19,10 @@
 
 package org.elasticsearch.plugin.mapper.attachments;
 
-import org.elasticsearch.common.inject.Module;
-import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.index.IndexService;
+import org.elasticsearch.index.mapper.attachment.AttachmentMapper;
 import org.elasticsearch.plugins.Plugin;
 
-import java.util.Collection;
-import java.util.Collections;
-
-/**
- *
- */
 public class MapperAttachmentsPlugin extends Plugin {
 
     @Override
@@ -42,7 +36,7 @@ public String description() {
     }
 
     @Override
-    public Collection<Module> indexModules(Settings indexSettings) {
-        return Collections.<Module>singletonList(new AttachmentsIndexModule());
+    public void onIndexService(IndexService indexService) {
+        indexService.mapperService().documentMapperParser().putTypeParser("attachment", new AttachmentMapper.TypeParser());
     }
 }