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* 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.action.termvector.dfs;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.ShardOperationFailedException;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.DefaultShardOperationFailedException;
import org.elasticsearch.action.support.broadcast.BroadcastShardOperationFailedException;
import org.elasticsearch.action.support.broadcast.TransportBroadcastOperationAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.routing.GroupShardsIterator;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.AtomicArray;
import org.elasticsearch.search.SearchService;
import org.elasticsearch.search.controller.SearchPhaseController;
import org.elasticsearch.search.dfs.AggregatedDfs;
import org.elasticsearch.search.dfs.DfsSearchResult;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReferenceArray;
import static com.google.common.collect.Lists.newArrayList;
/**
* Get the dfs only with no fetch phase. This is for internal use only.
*/
public class TransportDfsOnlyAction extends TransportBroadcastOperationAction<DfsOnlyRequest, DfsOnlyResponse, ShardDfsOnlyRequest, ShardDfsOnlyResponse> {
public static final String NAME = "internal:index/termvectors/dfs";
private final SearchService searchService;
private final SearchPhaseController searchPhaseController;
@Inject
public TransportDfsOnlyAction(Settings settings, ThreadPool threadPool, ClusterService clusterService, TransportService transportService,
ActionFilters actionFilters, SearchService searchService, SearchPhaseController searchPhaseController) {
super(settings, NAME, threadPool, clusterService, transportService, actionFilters);
this.searchService = searchService;
this.searchPhaseController = searchPhaseController;
}
@Override
protected void doExecute(DfsOnlyRequest request, ActionListener<DfsOnlyResponse> listener) {
request.nowInMillis = System.currentTimeMillis();
super.doExecute(request, listener);
}
@Override
protected String executor() {
return ThreadPool.Names.SEARCH;
}
@Override
protected DfsOnlyRequest newRequest() {
return new DfsOnlyRequest();
}
@Override
protected ShardDfsOnlyRequest newShardRequest() {
return new ShardDfsOnlyRequest();
}
@Override
protected ShardDfsOnlyRequest newShardRequest(int numShards, ShardRouting shard, DfsOnlyRequest request) {
String[] filteringAliases = clusterService.state().metaData().filteringAliases(shard.index(), request.indices());
return new ShardDfsOnlyRequest(shard, numShards, filteringAliases, request.nowInMillis, request);
}
@Override
protected ShardDfsOnlyResponse newShardResponse() {
return new ShardDfsOnlyResponse();
}
@Override
protected GroupShardsIterator shards(ClusterState clusterState, DfsOnlyRequest request, String[] concreteIndices) {
Map<String, Set<String>> routingMap = clusterState.metaData().resolveSearchRouting(request.routing(), request.indices());
return clusterService.operationRouting().searchShards(clusterState, request.indices(), concreteIndices, routingMap, request.preference());
}
@Override
protected ClusterBlockException checkGlobalBlock(ClusterState state, DfsOnlyRequest request) {
return state.blocks().globalBlockedException(ClusterBlockLevel.READ);
}
@Override
protected ClusterBlockException checkRequestBlock(ClusterState state, DfsOnlyRequest countRequest, String[] concreteIndices) {
return state.blocks().indicesBlockedException(ClusterBlockLevel.READ, concreteIndices);
}
@Override
protected DfsOnlyResponse newResponse(DfsOnlyRequest request, AtomicReferenceArray shardsResponses, ClusterState clusterState) {
int successfulShards = 0;
int failedShards = 0;
List<ShardOperationFailedException> shardFailures = null;
AtomicArray<DfsSearchResult> dfsResults = new AtomicArray<>(shardsResponses.length());
for (int i = 0; i < shardsResponses.length(); i++) {
Object shardResponse = shardsResponses.get(i);
if (shardResponse == null) {
// simply ignore non active shards
} else if (shardResponse instanceof BroadcastShardOperationFailedException) {
failedShards++;
if (shardFailures == null) {
shardFailures = newArrayList();
}
shardFailures.add(new DefaultShardOperationFailedException((BroadcastShardOperationFailedException) shardResponse));
} else {
dfsResults.set(i, ((ShardDfsOnlyResponse) shardResponse).getDfsSearchResult());
successfulShards++;
}
}
AggregatedDfs dfs = searchPhaseController.aggregateDfs(dfsResults);
return new DfsOnlyResponse(dfs, shardsResponses.length(), successfulShards, failedShards, shardFailures, buildTookInMillis(request));
}
@Override
protected ShardDfsOnlyResponse shardOperation(ShardDfsOnlyRequest request) throws ElasticsearchException {
DfsSearchResult dfsSearchResult = searchService.executeDfsPhase(request.getShardSearchRequest());
searchService.freeContext(dfsSearchResult.id());
return new ShardDfsOnlyResponse(request.shardId(), dfsSearchResult);
}
/**
* Builds how long it took to execute the dfs request.
*/
protected final long buildTookInMillis(DfsOnlyRequest request) {
// protect ourselves against time going backwards
// negative values don't make sense and we want to be able to serialize that thing as a vLong
return Math.max(1, System.currentTimeMillis() - request.nowInMillis);
}
}