/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.search.type;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.search.ReduceSearchPhaseException;
import org.elasticsearch.action.search.SearchOperationThreading;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.ShardSearchFailure;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.search.SearchShardTarget;
import org.elasticsearch.search.action.SearchServiceListener;
import org.elasticsearch.search.action.SearchServiceTransportAction;
import org.elasticsearch.search.controller.SearchPhaseController;
import org.elasticsearch.search.dfs.AggregatedDfs;
import org.elasticsearch.search.dfs.DfsSearchResult;
import org.elasticsearch.search.fetch.QueryFetchSearchResult;
import org.elasticsearch.search.internal.InternalSearchRequest;
import org.elasticsearch.search.internal.InternalSearchResponse;
import org.elasticsearch.search.query.QuerySearchRequest;
import org.elasticsearch.threadpool.ThreadPool;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import static org.elasticsearch.action.search.type.TransportSearchHelper.*;
/**
* @author kimchy (shay.banon)
*/
public class TransportSearchDfsQueryAndFetchAction extends TransportSearchTypeAction {
@Inject public TransportSearchDfsQueryAndFetchAction(Settings settings, ThreadPool threadPool, ClusterService clusterService,
TransportSearchCache transportSearchCache, SearchServiceTransportAction searchService, SearchPhaseController searchPhaseController) {
super(settings, threadPool, clusterService, transportSearchCache, searchService, searchPhaseController);
}
@Override protected void doExecute(SearchRequest searchRequest, ActionListener<SearchResponse> listener) {
new AsyncAction(searchRequest, listener).start();
}
private class AsyncAction extends BaseAsyncAction<DfsSearchResult> {
private final Collection<DfsSearchResult> dfsResults = searchCache.obtainDfsResults();
private final Map<SearchShardTarget, QueryFetchSearchResult> queryFetchResults = searchCache.obtainQueryFetchResults();
private AsyncAction(SearchRequest request, ActionListener<SearchResponse> listener) {
super(request, listener);
}
@Override protected String firstPhaseName() {
return "dfs";
}
@Override protected void sendExecuteFirstPhase(DiscoveryNode node, InternalSearchRequest request, SearchServiceListener<DfsSearchResult> listener) {
searchService.sendExecuteDfs(node, request, listener);
}
@Override protected void processFirstPhaseResult(ShardRouting shard, DfsSearchResult result) {
dfsResults.add(result);
}
@Override protected void moveToSecondPhase() {
final AggregatedDfs dfs = searchPhaseController.aggregateDfs(dfsResults);
final AtomicInteger counter = new AtomicInteger(dfsResults.size());
int localOperations = 0;
for (final DfsSearchResult dfsResult : dfsResults) {
DiscoveryNode node = nodes.get(dfsResult.shardTarget().nodeId());
if (node.id().equals(nodes.localNodeId())) {
localOperations++;
} else {
QuerySearchRequest querySearchRequest = new QuerySearchRequest(dfsResult.id(), dfs);
executeSecondPhase(dfsResult, counter, node, querySearchRequest);
}
}
if (localOperations > 0) {
if (request.operationThreading() == SearchOperationThreading.SINGLE_THREAD) {
threadPool.executor(ThreadPool.Names.SEARCH).execute(new Runnable() {
@Override public void run() {
for (final DfsSearchResult dfsResult : dfsResults) {
DiscoveryNode node = nodes.get(dfsResult.shardTarget().nodeId());
if (node.id().equals(nodes.localNodeId())) {
QuerySearchRequest querySearchRequest = new QuerySearchRequest(dfsResult.id(), dfs);
executeSecondPhase(dfsResult, counter, node, querySearchRequest);
}
}
}
});
} else {
boolean localAsync = request.operationThreading() == SearchOperationThreading.THREAD_PER_SHARD;
for (final DfsSearchResult dfsResult : dfsResults) {
final DiscoveryNode node = nodes.get(dfsResult.shardTarget().nodeId());
if (node.id().equals(nodes.localNodeId())) {
final QuerySearchRequest querySearchRequest = new QuerySearchRequest(dfsResult.id(), dfs);
if (localAsync) {
threadPool.executor(ThreadPool.Names.SEARCH).execute(new Runnable() {
@Override public void run() {
executeSecondPhase(dfsResult, counter, node, querySearchRequest);
}
});
} else {
executeSecondPhase(dfsResult, counter, node, querySearchRequest);
}
}
}
}
}
}
void executeSecondPhase(final DfsSearchResult dfsResult, final AtomicInteger counter, DiscoveryNode node, final QuerySearchRequest querySearchRequest) {
searchService.sendExecuteFetch(node, querySearchRequest, new SearchServiceListener<QueryFetchSearchResult>() {
@Override public void onResult(QueryFetchSearchResult result) {
result.shardTarget(dfsResult.shardTarget());
queryFetchResults.put(result.shardTarget(), result);
if (counter.decrementAndGet() == 0) {
finishHim();
}
}
@Override public void onFailure(Throwable t) {
if (logger.isDebugEnabled()) {
logger.debug("[{}] Failed to execute query phase", t, querySearchRequest.id());
}
AsyncAction.this.shardFailures.add(new ShardSearchFailure(t));
successulOps.decrementAndGet();
if (counter.decrementAndGet() == 0) {
finishHim();
}
}
});
}
void finishHim() {
try {
innerFinishHim();
} catch (Exception e) {
ReduceSearchPhaseException failure = new ReduceSearchPhaseException("query_fetch", "", e, buildShardFailures());
if (logger.isDebugEnabled()) {
logger.debug("failed to reduce search", failure);
}
listener.onFailure(failure);
} finally {
searchCache.releaseDfsResults(dfsResults);
searchCache.releaseQueryFetchResults(queryFetchResults);
}
}
void innerFinishHim() throws Exception {
sortedShardList = searchPhaseController.sortDocs(queryFetchResults.values());
final InternalSearchResponse internalResponse = searchPhaseController.merge(sortedShardList, queryFetchResults, queryFetchResults);
String scrollId = null;
if (request.scroll() != null) {
scrollId = buildScrollId(request.searchType(), dfsResults, null);
}
listener.onResponse(new SearchResponse(internalResponse, scrollId, expectedSuccessfulOps, successulOps.get(), buildTookInMillis(), buildShardFailures()));
}
}
}