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* 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.
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package org.elasticsearch.action.get;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.TransportActions;
import org.elasticsearch.action.support.single.shard.TransportSingleShardAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.routing.ShardIterator;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.IndexService;
import org.elasticsearch.index.get.GetResult;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
public class TransportShardMultiGetAction extends TransportSingleShardAction<MultiGetShardRequest, MultiGetShardResponse> {
private static final String ACTION_NAME = MultiGetAction.NAME + "[shard]";
private final IndicesService indicesService;
private final boolean realtime;
@Inject
public TransportShardMultiGetAction(Settings settings, ClusterService clusterService, TransportService transportService,
IndicesService indicesService, ThreadPool threadPool, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, ACTION_NAME, threadPool, clusterService, transportService, actionFilters, indexNameExpressionResolver,
MultiGetShardRequest.class, ThreadPool.Names.GET);
this.indicesService = indicesService;
this.realtime = settings.getAsBoolean("action.get.realtime", true);
}
@Override
protected boolean isSubAction() {
return true;
}
@Override
protected MultiGetShardResponse newResponse() {
return new MultiGetShardResponse();
}
@Override
protected boolean resolveIndex(MultiGetShardRequest request) {
return true;
}
@Override
protected ShardIterator shards(ClusterState state, InternalRequest request) {
return clusterService.operationRouting()
.getShards(state, request.request().index(), request.request().shardId(), request.request().preference());
}
@Override
protected void resolveRequest(ClusterState state, InternalRequest request) {
if (request.request().realtime == null) {
request.request().realtime = this.realtime;
}
}
@Override
protected MultiGetShardResponse shardOperation(MultiGetShardRequest request, ShardId shardId) {
IndexService indexService = indicesService.indexServiceSafe(shardId.getIndex());
IndexShard indexShard = indexService.shardSafe(shardId.id());
if (request.refresh() && !request.realtime()) {
indexShard.refresh("refresh_flag_mget");
}
MultiGetShardResponse response = new MultiGetShardResponse();
for (int i = 0; i < request.locations.size(); i++) {
MultiGetRequest.Item item = request.items.get(i);
try {
GetResult getResult = indexShard.getService().get(item.type(), item.id(), item.fields(), request.realtime(), item.version(), item.versionType(), item.fetchSourceContext(), request.ignoreErrorsOnGeneratedFields());
response.add(request.locations.get(i), new GetResponse(getResult));
} catch (Throwable t) {
if (TransportActions.isShardNotAvailableException(t)) {
throw (ElasticsearchException) t;
} else {
logger.debug("{} failed to execute multi_get for [{}]/[{}]", t, shardId, item.type(), item.id());
response.add(request.locations.get(i), new MultiGetResponse.Failure(request.index(), item.type(), item.id(), t));
}
}
}
return response;
}
}