Merge branch 'master' into ccr

* master:
  Add get field mappings to High Level REST API Client (#31423)
  [DOCS] Updates Watcher examples for code testing (#31152)
  TEST: Add bwc recovery tests with synced-flush index
  [DOCS] Move sql to docs (#31474)
  [DOCS] Move monitoring to docs folder (#31477)
  Core: Combine doExecute methods in TransportAction (#31517)
  IndexShard should not return null stats (#31528)
  fix repository update with the same settings but different type (#31458)
  Fix Mockito trying to mock IOException that isn't thrown by method (#31433) (#31527)
  Node selector per client rather than per request (#31471)
  Core: Combine messageRecieved methods in TransportRequestHandler (#31519)
  Upgrade to Lucene 7.4.0. (#31529)
  [ML] Add ML filter update API (#31437)
  Allow multiple unicast host providers (#31509)
  Avoid deprecation warning when running the ML datafeed extractor. (#31463)
  REST high-level client: add simulate pipeline API (#31158)
  Get Mapping API to honour allow_no_indices and ignore_unavailable (#31507)
  [PkiRealm] Invalidate cache on role mappings change (#31510)
  [Security] Check auth scheme case insensitively (#31490)
  In NumberFieldType equals and hashCode, make sure that NumberType is taken into account. (#31514)
  [DOCS] Fix REST tests in SQL docs
  [DOCS] Add code snippet testing in more ML APIs (#31339)
  Core: Remove ThreadPool from base TransportAction (#31492)
  [DOCS] Remove fixed file from build.gradle
  Rename createNewTranslog to fileBasedRecovery (#31508)
  Test: Skip assertion on windows
  [DOCS] Creates field and document level security overview (#30937)
  [DOCS] Significantly improve SQL docs
  [DOCS] Move migration APIs to docs (#31473)
  Core: Convert TransportAction.execute uses to client calls (#31487)
  Return transport addresses from UnicastHostsProvider (#31426)
  Ensure local addresses aren't null (#31440)
  Remove unused generic type for client execute method (#31444)
  Introduce http and tcp server channels (#31446)

buildSrc/version.properties

@@ -1,5 +1,5 @@
 elasticsearch     = 7.0.0-alpha1
-lucene            = 7.4.0-snapshot-518d303506
+lucene            = 7.4.0
 
 # optional dependencies
 spatial4j         = 0.7

client/client-benchmark-noop-api-plugin/src/main/java/org/elasticsearch/plugin/noop/action/bulk/TransportNoopBulkAction.java

@@ -19,8 +19,8 @@
 package org.elasticsearch.plugin.noop.action.bulk;
 
 import org.elasticsearch.action.ActionListener;
-import org.elasticsearch.action.DocWriteResponse;
 import org.elasticsearch.action.DocWriteRequest;
+import org.elasticsearch.action.DocWriteResponse;
 import org.elasticsearch.action.bulk.BulkItemResponse;
 import org.elasticsearch.action.bulk.BulkRequest;
 import org.elasticsearch.action.bulk.BulkResponse;
@@ -30,21 +30,20 @@
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.index.shard.ShardId;
-import org.elasticsearch.threadpool.ThreadPool;
+import org.elasticsearch.tasks.Task;
 import org.elasticsearch.transport.TransportService;
 
 public class TransportNoopBulkAction extends HandledTransportAction<BulkRequest, BulkResponse> {
     private static final BulkItemResponse ITEM_RESPONSE = new BulkItemResponse(1, DocWriteRequest.OpType.UPDATE,
         new UpdateResponse(new ShardId("mock", "", 1), "mock_type", "1", 1L, DocWriteResponse.Result.CREATED));
 
     @Inject
-    public TransportNoopBulkAction(Settings settings, ThreadPool threadPool, TransportService transportService,
-                                      ActionFilters actionFilters) {
-        super(settings, NoopBulkAction.NAME, threadPool, transportService, actionFilters, BulkRequest::new);
+    public TransportNoopBulkAction(Settings settings, TransportService transportService, ActionFilters actionFilters) {
+        super(settings, NoopBulkAction.NAME, transportService, actionFilters, BulkRequest::new);
     }
 
     @Override
-    protected void doExecute(BulkRequest request, ActionListener<BulkResponse> listener) {
+    protected void doExecute(Task task, BulkRequest request, ActionListener<BulkResponse> listener) {
         final int itemCount = request.requests().size();
         // simulate at least a realistic amount of data that gets serialized
         BulkItemResponse[] bulkItemResponses = new BulkItemResponse[itemCount];

client/client-benchmark-noop-api-plugin/src/main/java/org/elasticsearch/plugin/noop/action/search/TransportNoopSearchAction.java

@@ -27,27 +27,25 @@
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.io.stream.Writeable;
 import org.elasticsearch.common.settings.Settings;
-import org.elasticsearch.search.aggregations.InternalAggregations;
 import org.elasticsearch.search.SearchHit;
 import org.elasticsearch.search.SearchHits;
+import org.elasticsearch.search.aggregations.InternalAggregations;
 import org.elasticsearch.search.internal.InternalSearchResponse;
 import org.elasticsearch.search.profile.SearchProfileShardResults;
 import org.elasticsearch.search.suggest.Suggest;
-import org.elasticsearch.threadpool.ThreadPool;
+import org.elasticsearch.tasks.Task;
 import org.elasticsearch.transport.TransportService;
 
 import java.util.Collections;
 
 public class TransportNoopSearchAction extends HandledTransportAction<SearchRequest, SearchResponse> {
     @Inject
-    public TransportNoopSearchAction(Settings settings, ThreadPool threadPool, TransportService transportService,
-                                     ActionFilters actionFilters) {
-        super(settings, NoopSearchAction.NAME, threadPool, transportService, actionFilters,
-              (Writeable.Reader<SearchRequest>) SearchRequest::new);
+    public TransportNoopSearchAction(Settings settings, TransportService transportService, ActionFilters actionFilters) {
+        super(settings, NoopSearchAction.NAME, transportService, actionFilters, (Writeable.Reader<SearchRequest>) SearchRequest::new);
     }
 
     @Override
-    protected void doExecute(SearchRequest request, ActionListener<SearchResponse> listener) {
+    protected void doExecute(Task task, SearchRequest request, ActionListener<SearchResponse> listener) {
         listener.onResponse(new SearchResponse(new InternalSearchResponse(
             new SearchHits(
                 new SearchHit[0], 0L, 0.0f),

client/rest-high-level/src/main/java/org/elasticsearch/client/IndicesClient.java

@@ -37,6 +37,8 @@
 import org.elasticsearch.action.admin.indices.forcemerge.ForceMergeRequest;
 import org.elasticsearch.action.admin.indices.forcemerge.ForceMergeResponse;
 import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
+import org.elasticsearch.action.admin.indices.mapping.get.GetFieldMappingsRequest;
+import org.elasticsearch.action.admin.indices.mapping.get.GetFieldMappingsResponse;
 import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsRequest;
 import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsResponse;
 import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
@@ -188,6 +190,35 @@ public void getMappingsAsync(GetMappingsRequest getMappingsRequest, RequestOptio
             GetMappingsResponse::fromXContent, listener, emptySet());
     }
 
+    /**
+     * Retrieves the field mappings on an index or indices using the Get Field Mapping API.
+     * See <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-get-field-mapping.html">
+     * Get Field Mapping API on elastic.co</a>
+     * @param getFieldMappingsRequest the request
+     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @return the response
+     * @throws IOException in case there is a problem sending the request or parsing back the response
+     */
+    public GetFieldMappingsResponse getFieldMapping(GetFieldMappingsRequest getFieldMappingsRequest,
+                                                    RequestOptions options) throws IOException {
+        return restHighLevelClient.performRequestAndParseEntity(getFieldMappingsRequest, RequestConverters::getFieldMapping, options,
+            GetFieldMappingsResponse::fromXContent, emptySet());
+    }
+
+    /**
+     * Asynchronously retrieves the field mappings on an index on indices using the Get Field Mapping API.
+     * See <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-get-field-mapping.html">
+     * Get Field Mapping API on elastic.co</a>
+     * @param getFieldMappingsRequest the request
+     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @param listener the listener to be notified upon request completion
+     */
+    public void getFieldMappingAsync(GetFieldMappingsRequest getFieldMappingsRequest, RequestOptions options,
+                                     ActionListener<GetFieldMappingsResponse> listener) {
+        restHighLevelClient.performRequestAsyncAndParseEntity(getFieldMappingsRequest, RequestConverters::getFieldMapping, options,
+            GetFieldMappingsResponse::fromXContent, listener, emptySet());
+    }
+
     /**
      * Updates aliases using the Index Aliases API.
      * See <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-aliases.html">

client/rest-high-level/src/main/java/org/elasticsearch/client/IngestClient.java

@@ -24,6 +24,8 @@
 import org.elasticsearch.action.ingest.GetPipelineRequest;
 import org.elasticsearch.action.ingest.GetPipelineResponse;
 import org.elasticsearch.action.ingest.PutPipelineRequest;
+import org.elasticsearch.action.ingest.SimulatePipelineRequest;
+import org.elasticsearch.action.ingest.SimulatePipelineResponse;
 import org.elasticsearch.action.ingest.WritePipelineResponse;
 
 import java.io.IOException;
@@ -125,4 +127,37 @@ public void deletePipelineAsync(DeletePipelineRequest request, RequestOptions op
         restHighLevelClient.performRequestAsyncAndParseEntity( request, RequestConverters::deletePipeline, options,
             WritePipelineResponse::fromXContent, listener, emptySet());
     }
+
+    /**
+     * Simulate a pipeline on a set of documents provided in the request
+     * <p>
+     * See
+     * <a href="https://www.elastic.co/guide/en/elasticsearch/reference/master/simulate-pipeline-api.html">
+     *     Simulate Pipeline API on elastic.co</a>
+     * @param request the request
+     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @return the response
+     * @throws IOException in case there is a problem sending the request or parsing back the response
+     */
+    public SimulatePipelineResponse simulatePipeline(SimulatePipelineRequest request, RequestOptions options) throws IOException {
+        return restHighLevelClient.performRequestAndParseEntity( request, RequestConverters::simulatePipeline, options,
+            SimulatePipelineResponse::fromXContent, emptySet());
+    }
+
+    /**
+     * Asynchronously simulate a pipeline on a set of documents provided in the request
+     * <p>
+     * See
+     * <a href="https://www.elastic.co/guide/en/elasticsearch/reference/master/simulate-pipeline-api.html">
+     *     Simulate Pipeline API on elastic.co</a>
+     * @param request the request
+     * @param options the request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @param listener the listener to be notified upon request completion
+     */
+    public void simulatePipelineAsync(SimulatePipelineRequest request,
+                                      RequestOptions options,
+                                      ActionListener<SimulatePipelineResponse> listener) {
+        restHighLevelClient.performRequestAsyncAndParseEntity( request, RequestConverters::simulatePipeline, options,
+            SimulatePipelineResponse::fromXContent, listener, emptySet());
+    }
 }

client/rest-high-level/src/main/java/org/elasticsearch/client/RequestConverters.java

@@ -50,6 +50,7 @@
 import org.elasticsearch.action.admin.indices.flush.SyncedFlushRequest;
 import org.elasticsearch.action.admin.indices.forcemerge.ForceMergeRequest;
 import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
+import org.elasticsearch.action.admin.indices.mapping.get.GetFieldMappingsRequest;
 import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsRequest;
 import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
 import org.elasticsearch.action.admin.indices.open.OpenIndexRequest;
@@ -71,6 +72,7 @@
 import org.elasticsearch.action.ingest.DeletePipelineRequest;
 import org.elasticsearch.action.ingest.PutPipelineRequest;
 import org.elasticsearch.action.ingest.GetPipelineRequest;
+import org.elasticsearch.action.ingest.SimulatePipelineRequest;
 import org.elasticsearch.action.search.ClearScrollRequest;
 import org.elasticsearch.action.search.MultiSearchRequest;
 import org.elasticsearch.action.search.SearchRequest;
@@ -229,6 +231,25 @@ static Request getMappings(GetMappingsRequest getMappingsRequest) throws IOExcep
         return request;
     }
 
+    static Request getFieldMapping(GetFieldMappingsRequest getFieldMappingsRequest) throws IOException {
+        String[] indices = getFieldMappingsRequest.indices() == null ? Strings.EMPTY_ARRAY : getFieldMappingsRequest.indices();
+        String[] types = getFieldMappingsRequest.types() == null ? Strings.EMPTY_ARRAY : getFieldMappingsRequest.types();
+        String[] fields = getFieldMappingsRequest.fields() == null ? Strings.EMPTY_ARRAY : getFieldMappingsRequest.fields();
+
+        String endpoint = new EndpointBuilder().addCommaSeparatedPathParts(indices)
+            .addPathPartAsIs("_mapping").addCommaSeparatedPathParts(types)
+            .addPathPartAsIs("field").addCommaSeparatedPathParts(fields)
+            .build();
+
+        Request request = new Request(HttpGet.METHOD_NAME, endpoint);
+
+        Params parameters = new Params(request);
+        parameters.withIndicesOptions(getFieldMappingsRequest.indicesOptions());
+        parameters.withIncludeDefaults(getFieldMappingsRequest.includeDefaults());
+        parameters.withLocal(getFieldMappingsRequest.local());
+        return request;
+    }
+
     static Request refresh(RefreshRequest refreshRequest) {
         String[] indices = refreshRequest.indices() == null ? Strings.EMPTY_ARRAY : refreshRequest.indices();
         Request request = new Request(HttpPost.METHOD_NAME, endpoint(indices, "_refresh"));
@@ -886,6 +907,20 @@ static Request validateQuery(ValidateQueryRequest validateQueryRequest) throws I
         return request;
     }
 
+    static Request simulatePipeline(SimulatePipelineRequest simulatePipelineRequest) throws IOException {
+        EndpointBuilder builder = new EndpointBuilder().addPathPartAsIs("_ingest/pipeline");
+        if (simulatePipelineRequest.getId() != null && !simulatePipelineRequest.getId().isEmpty()) {
+            builder.addPathPart(simulatePipelineRequest.getId());
+        }
+        builder.addPathPartAsIs("_simulate");
+        String endpoint = builder.build();
+        Request request = new Request(HttpPost.METHOD_NAME, endpoint);
+        Params params = new Params(request);
+        params.putParam("verbose", Boolean.toString(simulatePipelineRequest.isVerbose()));
+        request.setEntity(createEntity(simulatePipelineRequest, REQUEST_BODY_CONTENT_TYPE));
+        return request;
+    }
+
     static Request getAlias(GetAliasesRequest getAliasesRequest) {
         String[] indices = getAliasesRequest.indices() == null ? Strings.EMPTY_ARRAY : getAliasesRequest.indices();
         String[] aliases = getAliasesRequest.aliases() == null ? Strings.EMPTY_ARRAY : getAliasesRequest.aliases();

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

@@ -85,9 +85,7 @@ private HighLevelClient(RestClient restClient) {
         }
     }
 
-    protected static XContentBuilder buildRandomXContentPipeline() throws IOException {
-        XContentType xContentType = randomFrom(XContentType.values());
-        XContentBuilder pipelineBuilder = XContentBuilder.builder(xContentType.xContent());
+    protected static XContentBuilder buildRandomXContentPipeline(XContentBuilder pipelineBuilder) throws IOException {
         pipelineBuilder.startObject();
         {
             pipelineBuilder.field(Pipeline.DESCRIPTION_KEY, "some random set of processors");
@@ -114,6 +112,12 @@ protected static XContentBuilder buildRandomXContentPipeline() throws IOExceptio
         return pipelineBuilder;
     }
 
+    protected static XContentBuilder buildRandomXContentPipeline() throws IOException {
+        XContentType xContentType = randomFrom(XContentType.values());
+        XContentBuilder pipelineBuilder = XContentBuilder.builder(xContentType.xContent());
+        return buildRandomXContentPipeline(pipelineBuilder);
+    }
+
     protected static void createPipeline(String pipelineId) throws IOException {
         XContentBuilder builder = buildRandomXContentPipeline();
         createPipeline(new PutPipelineRequest(pipelineId, BytesReference.bytes(builder), builder.contentType()));

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

@@ -43,6 +43,8 @@
 import org.elasticsearch.action.admin.indices.forcemerge.ForceMergeRequest;
 import org.elasticsearch.action.admin.indices.forcemerge.ForceMergeResponse;
 import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
+import org.elasticsearch.action.admin.indices.mapping.get.GetFieldMappingsRequest;
+import org.elasticsearch.action.admin.indices.mapping.get.GetFieldMappingsResponse;
 import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsRequest;
 import org.elasticsearch.action.admin.indices.mapping.get.GetMappingsResponse;
 import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
@@ -74,6 +76,7 @@
 import org.elasticsearch.cluster.metadata.IndexMetaData;
 import org.elasticsearch.cluster.metadata.IndexTemplateMetaData;
 import org.elasticsearch.common.ValidationException;
+import org.elasticsearch.common.bytes.BytesArray;
 import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.unit.ByteSizeUnit;
@@ -378,6 +381,41 @@ public void testGetMapping() throws IOException {
         assertThat(mappings, equalTo(expected));
     }
 
+    public void testGetFieldMapping() throws IOException {
+        String indexName = "test";
+        createIndex(indexName, Settings.EMPTY);
+
+        PutMappingRequest putMappingRequest = new PutMappingRequest(indexName);
+        putMappingRequest.type("_doc");
+        XContentBuilder mappingBuilder = JsonXContent.contentBuilder();
+        mappingBuilder.startObject().startObject("properties").startObject("field");
+        mappingBuilder.field("type", "text");
+        mappingBuilder.endObject().endObject().endObject();
+        putMappingRequest.source(mappingBuilder);
+
+        PutMappingResponse putMappingResponse =
+            execute(putMappingRequest, highLevelClient().indices()::putMapping, highLevelClient().indices()::putMappingAsync);
+        assertTrue(putMappingResponse.isAcknowledged());
+
+        GetFieldMappingsRequest getFieldMappingsRequest = new GetFieldMappingsRequest()
+            .indices(indexName)
+            .types("_doc")
+            .fields("field");
+
+        GetFieldMappingsResponse getFieldMappingsResponse =
+            execute(getFieldMappingsRequest,
+                highLevelClient().indices()::getFieldMapping,
+                highLevelClient().indices()::getFieldMappingAsync);
+
+        final Map<String, GetFieldMappingsResponse.FieldMappingMetaData> fieldMappingMap =
+            getFieldMappingsResponse.mappings().get(indexName).get("_doc");
+
+        final GetFieldMappingsResponse.FieldMappingMetaData metaData =
+            new GetFieldMappingsResponse.FieldMappingMetaData("field",
+                new BytesArray("{\"field\":{\"type\":\"text\"}}"));
+        assertThat(fieldMappingMap, equalTo(Collections.singletonMap("field", metaData)));
+    }
+
     public void testDeleteIndex() throws IOException {
         {
             // Delete index if exists