org.elasticsearch.action.admin.cluster.reroute.TransportClusterRerouteAction Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* Licensed to Elasticsearch 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.reroute;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeAction;
import org.elasticsearch.cluster.AckedClusterStateUpdateTask;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.routing.allocation.AllocationService;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.routing.allocation.RoutingExplanations;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
/**
*/
public class TransportClusterRerouteAction extends TransportMasterNodeAction {
private final AllocationService allocationService;
@Inject
public TransportClusterRerouteAction(Settings settings, TransportService transportService, ClusterService clusterService, ThreadPool threadPool,
AllocationService allocationService, ActionFilters actionFilters, IndexNameExpressionResolver indexNameExpressionResolver) {
super(settings, ClusterRerouteAction.NAME, transportService, clusterService, threadPool, actionFilters, indexNameExpressionResolver, ClusterRerouteRequest.class);
this.allocationService = allocationService;
}
@Override
protected String executor() {
// we go async right away
return ThreadPool.Names.SAME;
}
@Override
protected ClusterBlockException checkBlock(ClusterRerouteRequest request, ClusterState state) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
}
@Override
protected ClusterRerouteResponse newResponse() {
return new ClusterRerouteResponse();
}
@Override
protected void masterOperation(final ClusterRerouteRequest request, final ClusterState state, final ActionListener listener) {
clusterService.submitStateUpdateTask("cluster_reroute (api)", new AckedClusterStateUpdateTask(Priority.IMMEDIATE, request, listener) {
private volatile ClusterState clusterStateToSend;
private volatile RoutingExplanations explanations;
@Override
protected ClusterRerouteResponse newResponse(boolean acknowledged) {
return new ClusterRerouteResponse(acknowledged, clusterStateToSend, explanations);
}
@Override
public void onAckTimeout() {
listener.onResponse(new ClusterRerouteResponse(false, clusterStateToSend, new RoutingExplanations()));
}
@Override
public void onFailure(String source, Throwable t) {
logger.debug("failed to perform [{}]", t, source);
super.onFailure(source, t);
}
@Override
public ClusterState execute(ClusterState currentState) {
RoutingAllocation.Result routingResult = allocationService.reroute(currentState, request.commands, request.explain());
ClusterState newState = ClusterState.builder(currentState).routingResult(routingResult).build();
clusterStateToSend = newState;
explanations = routingResult.explanations();
if (request.dryRun) {
return currentState;
}
return newState;
}
});
}
}