org.elasticsearch.action.admin.cluster.shards.TransportClusterSearchShardsAction Maven / Gradle / Ivy

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/*
 * Licensed to ElasticSearch and Shay Banon under one
 * or more contributor 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.cluster.shards;

import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.action.support.master.TransportMasterNodeOperationAction;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.GroupShardsIterator;
import org.elasticsearch.cluster.routing.ShardIterator;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;

import java.util.Map;
import java.util.Set;

import static com.google.common.collect.Sets.newHashSet;

/**
 */
public class TransportClusterSearchShardsAction extends TransportMasterNodeOperationAction {

    @Inject
    public TransportClusterSearchShardsAction(Settings settings, TransportService transportService, ClusterService clusterService, ThreadPool threadPool) {
        super(settings, transportService, clusterService, threadPool);
    }

    @Override
    protected String transportAction() {
        return ClusterSearchShardsAction.NAME;
    }

    @Override
    protected String executor() {
        return ThreadPool.Names.MANAGEMENT;
    }

    @Override
    protected boolean localExecute(ClusterSearchShardsRequest request) {
        return request.local();
    }

    @Override
    protected ClusterSearchShardsRequest newRequest() {
        return new ClusterSearchShardsRequest();
    }

    @Override
    protected ClusterSearchShardsResponse newResponse() {
        return new ClusterSearchShardsResponse();
    }

    @Override
    protected ClusterSearchShardsResponse masterOperation(ClusterSearchShardsRequest request, ClusterState state) throws ElasticSearchException {
        ClusterState clusterState = clusterService.state();
        String[] concreteIndices = clusterState.metaData().concreteIndices(request.indices(), request.ignoreIndices(), true);
        Map> routingMap = clusterState.metaData().resolveSearchRouting(request.routing(), request.indices());
        Set nodeIds = newHashSet();
        GroupShardsIterator groupShardsIterator = clusterService.operationRouting().searchShards(clusterState, request.indices(), concreteIndices, routingMap, request.preference());
        ShardRouting shard;
        ClusterSearchShardsGroup[] groupResponses = new ClusterSearchShardsGroup[groupShardsIterator.size()];
        int currentGroup = 0;
        for (ShardIterator shardIt : groupShardsIterator) {
            String index = shardIt.shardId().getIndex();
            int shardId = shardIt.shardId().getId();
            ShardRouting[] shardRoutings = new ShardRouting[shardIt.size()];
            int currentShard = 0;
            shardIt.reset();
            while ((shard = shardIt.nextOrNull()) != null) {
                shardRoutings[currentShard++] = shard;
                nodeIds.add(shard.currentNodeId());
            }
            groupResponses[currentGroup++] = new ClusterSearchShardsGroup(index, shardId, shardRoutings);
        }
        DiscoveryNode[] nodes = new DiscoveryNode[nodeIds.size()];
        int currentNode = 0;
        for (String nodeId : nodeIds) {
            nodes[currentNode++] = clusterState.getNodes().get(nodeId);
        }
        return new ClusterSearchShardsResponse(groupResponses, nodes);
    }
}