org.elasticsearch.action.admin.cluster.state.TransportClusterStateAction Maven / Gradle / Ivy

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/*
 * 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.MetaData;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.Index;
import org.elasticsearch.indices.IndexMissingException;
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 {

    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 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()) {
            if (request.filteredIndices().length > 0) {
                MetaData.Builder mdBuilder = newMetaDataBuilder();
                String[] indices = currentState.metaData().concreteIndices(request.filteredIndices());
                for (String filteredIndex : indices) {
                    IndexMetaData indexMetaData = currentState.metaData().index(filteredIndex);
                    if (indexMetaData == null) {
                        throw new IndexMissingException(new Index(filteredIndex));
                    }
                    mdBuilder.put(indexMetaData);
                }
                builder.metaData(mdBuilder);
            } else {
                builder.metaData(currentState.metaData());
            }
        }
        return new ClusterStateResponse(clusterName, builder.build());
    }
}