/*
* 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.get;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.single.shard.TransportShardSingleOperationAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.routing.ShardIterator;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.engine.Engine;
import org.elasticsearch.index.service.IndexService;
import org.elasticsearch.index.shard.service.IndexShard;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
public class TransportShardMultiGetAction extends TransportShardSingleOperationAction<MultiGetShardRequest, MultiGetShardResponse> {
private final IndicesService indicesService;
private final ScriptService scriptService;
private final boolean realtime;
@Inject public TransportShardMultiGetAction(Settings settings, ClusterService clusterService, TransportService transportService,
IndicesService indicesService, ScriptService scriptService, ThreadPool threadPool) {
super(settings, threadPool, clusterService, transportService);
this.indicesService = indicesService;
this.scriptService = scriptService;
this.realtime = settings.getAsBoolean("action.get.realtime", true);
}
@Override protected String executor() {
return ThreadPool.Names.SEARCH;
}
@Override protected String transportAction() {
return "indices/mget/shard";
}
@Override protected String transportShardAction() {
return "indices/mget/shard/s";
}
@Override protected MultiGetShardRequest newRequest() {
return new MultiGetShardRequest();
}
@Override protected MultiGetShardResponse newResponse() {
return new MultiGetShardResponse();
}
@Override protected void checkBlock(MultiGetShardRequest request, ClusterState state) {
state.blocks().indexBlockedRaiseException(ClusterBlockLevel.READ, request.index());
}
@Override protected ShardIterator shards(ClusterState clusterState, MultiGetShardRequest request) {
return clusterService.operationRouting()
.getShards(clusterService.state(), request.index(), request.shardId(), request.preference());
}
@Override protected void doExecute(MultiGetShardRequest request, ActionListener<MultiGetShardResponse> listener) {
if (request.realtime == null) {
request.realtime = this.realtime;
}
super.doExecute(request, listener);
}
@Override protected MultiGetShardResponse shardOperation(MultiGetShardRequest request, int shardId) throws ElasticSearchException {
IndexService indexService = indicesService.indexServiceSafe(request.index());
IndexShard indexShard = indexService.shardSafe(shardId);
if (request.refresh() && !request.realtime()) {
indexShard.refresh(new Engine.Refresh(false));
}
MultiGetShardResponse response = new MultiGetShardResponse();
for (int i = 0; i < request.locations.size(); i++) {
String type = request.types.get(i);
String id = request.ids.get(i);
String[] fields = request.fields.get(i);
try {
GetResponse getResponse = TransportGetAction.load(logger, scriptService, indexService, indexShard, request.index(), type, id, fields, request.realtime());
response.add(request.locations.get(i), getResponse);
} catch (Exception e) {
logger.debug("[{}][{}] failed to execute multi_get for [{}]/[{}]", e, request.index(), shardId, type, id);
response.add(request.locations.get(i), new MultiGetResponse.Failure(request.index(), type, id, ExceptionsHelper.detailedMessage(e)));
}
}
return response;
}
}