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* 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.admin.indices.mapping.get;
import com.google.common.collect.ImmutableMap;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.HandledTransportAction;
import org.elasticsearch.action.support.TransportAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.BaseTransportRequestHandler;
import org.elasticsearch.transport.TransportChannel;
import org.elasticsearch.transport.TransportService;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReferenceArray;
/**
*/
public class TransportGetFieldMappingsAction extends HandledTransportAction<GetFieldMappingsRequest, GetFieldMappingsResponse> {
private final ClusterService clusterService;
private final TransportGetFieldMappingsIndexAction shardAction;
@Inject
public TransportGetFieldMappingsAction(Settings settings, TransportService transportService, ClusterService clusterService, ThreadPool threadPool, TransportGetFieldMappingsIndexAction shardAction, ActionFilters actionFilters) {
super(settings, GetFieldMappingsAction.NAME, threadPool, transportService, actionFilters);
this.clusterService = clusterService;
this.shardAction = shardAction;
}
@Override
protected void doExecute(GetFieldMappingsRequest request, final ActionListener<GetFieldMappingsResponse> listener) {
ClusterState clusterState = clusterService.state();
String[] concreteIndices = clusterState.metaData().concreteIndices(request.indicesOptions(), request.indices());
final AtomicInteger indexCounter = new AtomicInteger();
final AtomicInteger completionCounter = new AtomicInteger(concreteIndices.length);
final AtomicReferenceArray<Object> indexResponses = new AtomicReferenceArray<>(concreteIndices.length);
if (concreteIndices.length == 0) {
listener.onResponse(new GetFieldMappingsResponse());
} else {
boolean probablySingleFieldRequest = concreteIndices.length == 1 && request.types().length == 1 && request.fields().length == 1;
for (final String index : concreteIndices) {
GetFieldMappingsIndexRequest shardRequest = new GetFieldMappingsIndexRequest(request, index, probablySingleFieldRequest);
// no threading needed, all is done on the index replication one
shardRequest.listenerThreaded(false);
shardAction.execute(shardRequest, new ActionListener<GetFieldMappingsResponse>() {
@Override
public void onResponse(GetFieldMappingsResponse result) {
indexResponses.set(indexCounter.getAndIncrement(), result);
if (completionCounter.decrementAndGet() == 0) {
listener.onResponse(merge(indexResponses));
}
}
@Override
public void onFailure(Throwable e) {
int index = indexCounter.getAndIncrement();
indexResponses.set(index, e);
if (completionCounter.decrementAndGet() == 0) {
listener.onResponse(merge(indexResponses));
}
}
});
}
}
}
private GetFieldMappingsResponse merge(AtomicReferenceArray<Object> indexResponses) {
MapBuilder<String, ImmutableMap<String, ImmutableMap<String, GetFieldMappingsResponse.FieldMappingMetaData>>> mergedResponses = MapBuilder.newMapBuilder();
for (int i = 0; i < indexResponses.length(); i++) {
Object element = indexResponses.get(i);
if (element instanceof GetFieldMappingsResponse) {
GetFieldMappingsResponse response = (GetFieldMappingsResponse) element;
mergedResponses.putAll(response.mappings());
}
}
return new GetFieldMappingsResponse(mergedResponses.immutableMap());
}
@Override
public GetFieldMappingsRequest newRequestInstance() {
return new GetFieldMappingsRequest();
}
}