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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.search;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.HandledTransportAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.AtomicArray;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.concurrent.atomic.AtomicInteger;
/**
*/
public class TransportMultiSearchAction extends HandledTransportAction<MultiSearchRequest, MultiSearchResponse> {
private final ClusterService clusterService;
private final TransportSearchAction searchAction;
@Inject
public TransportMultiSearchAction(Settings settings, ThreadPool threadPool, TransportService transportService, ClusterService clusterService, TransportSearchAction searchAction, ActionFilters actionFilters) {
super(settings, MultiSearchAction.NAME, threadPool, transportService, actionFilters);
this.clusterService = clusterService;
this.searchAction = searchAction;
}
@Override
protected void doExecute(final MultiSearchRequest request, final ActionListener<MultiSearchResponse> listener) {
ClusterState clusterState = clusterService.state();
clusterState.blocks().globalBlockedRaiseException(ClusterBlockLevel.READ);
final AtomicArray<MultiSearchResponse.Item> responses = new AtomicArray<>(request.requests().size());
final AtomicInteger counter = new AtomicInteger(responses.length());
for (int i = 0; i < responses.length(); i++) {
final int index = i;
SearchRequest searchRequest = new SearchRequest(request.requests().get(i), request);
searchAction.execute(searchRequest, new ActionListener<SearchResponse>() {
@Override
public void onResponse(SearchResponse searchResponse) {
responses.set(index, new MultiSearchResponse.Item(searchResponse, null));
if (counter.decrementAndGet() == 0) {
finishHim();
}
}
@Override
public void onFailure(Throwable e) {
responses.set(index, new MultiSearchResponse.Item(null, ExceptionsHelper.detailedMessage(e)));
if (counter.decrementAndGet() == 0) {
finishHim();
}
}
private void finishHim() {
listener.onResponse(new MultiSearchResponse(responses.toArray(new MultiSearchResponse.Item[responses.length()])));
}
});
}
}
@Override
public MultiSearchRequest newRequestInstance() {
return new MultiSearchRequest();
}
}