/*
* 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.admin.cluster.state;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.action.TransportActions;
import org.elasticsearch.action.support.master.TransportMasterNodeOperationAction;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.IndexTemplateMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import static org.elasticsearch.cluster.ClusterState.*;
import static org.elasticsearch.cluster.metadata.MetaData.*;
/**
* @author kimchy (shay.banon)
*/
public class TransportClusterStateAction extends TransportMasterNodeOperationAction<ClusterStateRequest, ClusterStateResponse> {
private final ClusterName clusterName;
@Inject public TransportClusterStateAction(Settings settings, TransportService transportService, ClusterService clusterService, ThreadPool threadPool,
ClusterName clusterName) {
super(settings, transportService, clusterService, threadPool);
this.clusterName = clusterName;
}
@Override protected String executor() {
return ThreadPool.Names.CACHED;
}
@Override protected String transportAction() {
return TransportActions.Admin.Cluster.STATE;
}
@Override protected ClusterStateRequest newRequest() {
return new ClusterStateRequest();
}
@Override protected ClusterStateResponse newResponse() {
return new ClusterStateResponse();
}
@Override protected boolean localExecute(ClusterStateRequest request) {
return request.local();
}
@Override protected ClusterStateResponse masterOperation(ClusterStateRequest request, ClusterState state) throws ElasticSearchException {
ClusterState currentState = clusterService.state();
ClusterState.Builder builder = newClusterStateBuilder();
if (!request.filterNodes()) {
builder.nodes(currentState.nodes());
}
if (!request.filterRoutingTable()) {
builder.routingTable(currentState.routingTable());
builder.allocationExplanation(currentState.allocationExplanation());
}
if (!request.filterBlocks()) {
builder.blocks(currentState.blocks());
}
if (!request.filterMetaData()) {
MetaData.Builder mdBuilder = newMetaDataBuilder();
if (request.filteredIndices().length == 0 && request.filteredIndexTemplates().length == 0) {
mdBuilder.metaData(currentState.metaData());
}
if (request.filteredIndices().length > 0) {
String[] indices = currentState.metaData().concreteIndicesIgnoreMissing(request.filteredIndices());
for (String filteredIndex : indices) {
IndexMetaData indexMetaData = currentState.metaData().index(filteredIndex);
if (indexMetaData != null) {
mdBuilder.put(indexMetaData);
}
}
}
if (request.filteredIndexTemplates().length > 0) {
for (String templateName : request.filteredIndexTemplates()) {
IndexTemplateMetaData indexTemplateMetaData = currentState.metaData().templates().get(templateName);
if (indexTemplateMetaData != null) {
mdBuilder.put(indexTemplateMetaData);
}
}
}
builder.metaData(mdBuilder);
}
return new ClusterStateResponse(clusterName, builder.build());
}
}