Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction Maven / Gradle / Ivy
ElasticSearch - Open Source, Distributed, RESTful Search Engine
/*
* Licensed to ElasticSearch and Shay Banon 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.search.type;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.search.*;
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.common.trove.ExtTIntArrayList;
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.fetch.FetchSearchRequest;
import org.elasticsearch.search.fetch.FetchSearchResult;
import org.elasticsearch.search.internal.InternalSearchResponse;
import org.elasticsearch.search.internal.ShardSearchRequest;
import org.elasticsearch.search.query.QuerySearchResult;
import org.elasticsearch.search.query.QuerySearchResultProvider;
import org.elasticsearch.threadpool.ThreadPool;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
/**
*
*/
public class TransportSearchQueryThenFetchAction extends TransportSearchTypeAction {
@Inject
public TransportSearchQueryThenFetchAction(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 listener) {
new AsyncAction(searchRequest, listener).start();
}
private class AsyncAction extends BaseAsyncAction {
private final Map queryResults = searchCache.obtainQueryResults();
private final Map fetchResults = searchCache.obtainFetchResults();
private volatile Map docIdsToLoad;
private AsyncAction(SearchRequest request, ActionListener listener) {
super(request, listener);
}
@Override
protected String firstPhaseName() {
return "query";
}
@Override
protected void sendExecuteFirstPhase(DiscoveryNode node, ShardSearchRequest request, SearchServiceListener listener) {
searchService.sendExecuteQuery(node, request, listener);
}
@Override
protected void processFirstPhaseResult(ShardRouting shard, QuerySearchResult result) {
queryResults.put(result.shardTarget(), result);
}
@Override
protected void moveToSecondPhase() {
sortedShardList = searchPhaseController.sortDocs(queryResults.values());
final Map docIdsToLoad = searchPhaseController.docIdsToLoad(sortedShardList);
this.docIdsToLoad = docIdsToLoad;
if (docIdsToLoad.isEmpty()) {
finishHim();
return;
}
final AtomicInteger counter = new AtomicInteger(docIdsToLoad.size());
int localOperations = 0;
for (final Map.Entry entry : docIdsToLoad.entrySet()) {
DiscoveryNode node = nodes.get(entry.getKey().nodeId());
if (node.id().equals(nodes.localNodeId())) {
localOperations++;
} else {
FetchSearchRequest fetchSearchRequest = new FetchSearchRequest(request, queryResults.get(entry.getKey()).id(), entry.getValue());
executeFetch(entry.getKey(), counter, fetchSearchRequest, node);
}
}
if (localOperations > 0) {
if (request.operationThreading() == SearchOperationThreading.SINGLE_THREAD) {
threadPool.executor(ThreadPool.Names.SEARCH).execute(new Runnable() {
@Override
public void run() {
for (final Map.Entry entry : docIdsToLoad.entrySet()) {
DiscoveryNode node = nodes.get(entry.getKey().nodeId());
if (node.id().equals(nodes.localNodeId())) {
FetchSearchRequest fetchSearchRequest = new FetchSearchRequest(request, queryResults.get(entry.getKey()).id(), entry.getValue());
executeFetch(entry.getKey(), counter, fetchSearchRequest, node);
}
}
}
});
} else {
boolean localAsync = request.operationThreading() == SearchOperationThreading.THREAD_PER_SHARD;
for (final Map.Entry entry : docIdsToLoad.entrySet()) {
final DiscoveryNode node = nodes.get(entry.getKey().nodeId());
if (node.id().equals(nodes.localNodeId())) {
final FetchSearchRequest fetchSearchRequest = new FetchSearchRequest(request, queryResults.get(entry.getKey()).id(), entry.getValue());
if (localAsync) {
threadPool.executor(ThreadPool.Names.SEARCH).execute(new Runnable() {
@Override
public void run() {
executeFetch(entry.getKey(), counter, fetchSearchRequest, node);
}
});
} else {
executeFetch(entry.getKey(), counter, fetchSearchRequest, node);
}
}
}
}
}
}
void executeFetch(final SearchShardTarget shardTarget, final AtomicInteger counter, final FetchSearchRequest fetchSearchRequest, DiscoveryNode node) {
searchService.sendExecuteFetch(node, fetchSearchRequest, new SearchServiceListener() {
@Override
public void onResult(FetchSearchResult result) {
result.shardTarget(shardTarget);
fetchResults.put(result.shardTarget(), result);
if (counter.decrementAndGet() == 0) {
finishHim();
}
}
@Override
public void onFailure(Throwable t) {
if (logger.isDebugEnabled()) {
logger.debug("[{}] Failed to execute fetch phase", t, fetchSearchRequest.id());
}
AsyncAction.this.addShardFailure(new ShardSearchFailure(t));
successulOps.decrementAndGet();
if (counter.decrementAndGet() == 0) {
finishHim();
}
}
});
}
void finishHim() {
try {
innerFinishHim();
} catch (Exception e) {
ReduceSearchPhaseException failure = new ReduceSearchPhaseException("fetch", "", e, buildShardFailures());
if (logger.isDebugEnabled()) {
logger.debug("failed to reduce search", failure);
}
listener.onFailure(failure);
} finally {
releaseIrrelevantSearchContexts(queryResults, docIdsToLoad);
searchCache.releaseQueryResults(queryResults);
searchCache.releaseFetchResults(fetchResults);
}
}
void innerFinishHim() throws Exception {
InternalSearchResponse internalResponse = searchPhaseController.merge(sortedShardList, queryResults, fetchResults);
String scrollId = null;
if (request.scroll() != null) {
scrollId = TransportSearchHelper.buildScrollId(request.searchType(), queryResults.values(), null);
}
listener.onResponse(new SearchResponse(internalResponse, scrollId, expectedSuccessfulOps, successulOps.get(), buildTookInMillis(), buildShardFailures()));
}
}
}
