/*
* 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.cluster.metadata;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ProcessedClusterStateUpdateTask;
import org.elasticsearch.cluster.block.ClusterBlock;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.block.ClusterBlocks;
import org.elasticsearch.cluster.routing.IndexRoutingTable;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.routing.allocation.ShardsAllocation;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.index.Index;
import org.elasticsearch.indices.IndexMissingException;
import static org.elasticsearch.cluster.ClusterState.*;
/**
* @author kimchy (shay.banon)
*/
public class MetaDataStateIndexService extends AbstractComponent {
public static final ClusterBlock INDEX_CLOSED_BLOCK = new ClusterBlock(4, "index closed", false, false, ClusterBlockLevel.READ_WRITE);
private final ClusterService clusterService;
private final ShardsAllocation shardsAllocation;
@Inject public MetaDataStateIndexService(Settings settings, ClusterService clusterService, ShardsAllocation shardsAllocation) {
super(settings);
this.clusterService = clusterService;
this.shardsAllocation = shardsAllocation;
}
public void closeIndex(final Request request, final Listener listener) {
clusterService.submitStateUpdateTask("close-index [" + request.index + "]", new ProcessedClusterStateUpdateTask() {
@Override public ClusterState execute(ClusterState currentState) {
IndexMetaData indexMetaData = currentState.metaData().index(request.index);
if (indexMetaData == null) {
listener.onFailure(new IndexMissingException(new Index(request.index)));
return currentState;
}
if (indexMetaData.state() == IndexMetaData.State.CLOSE) {
listener.onResponse(new Response(true));
return currentState;
}
logger.info("[{}] closing index", request.index);
MetaData.Builder mdBuilder = MetaData.builder()
.metaData(currentState.metaData())
.put(IndexMetaData.newIndexMetaDataBuilder(currentState.metaData().index(request.index)).state(IndexMetaData.State.CLOSE));
ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks())
.addIndexBlock(request.index, INDEX_CLOSED_BLOCK);
ClusterState updatedState = ClusterState.builder().state(currentState).metaData(mdBuilder).blocks(blocks).build();
RoutingTable.Builder rtBuilder = RoutingTable.builder()
.routingTable(currentState.routingTable())
.remove(request.index);
RoutingAllocation.Result routingResult = shardsAllocation.reroute(newClusterStateBuilder().state(updatedState).routingTable(rtBuilder).build());
return ClusterState.builder().state(updatedState).routingResult(routingResult).build();
}
@Override public void clusterStateProcessed(ClusterState clusterState) {
listener.onResponse(new Response(true));
}
});
}
public void openIndex(final Request request, final Listener listener) {
clusterService.submitStateUpdateTask("open-index [" + request.index + "]", new ProcessedClusterStateUpdateTask() {
@Override public ClusterState execute(ClusterState currentState) {
IndexMetaData indexMetaData = currentState.metaData().index(request.index);
if (indexMetaData == null) {
listener.onFailure(new IndexMissingException(new Index(request.index)));
return currentState;
}
if (indexMetaData.state() == IndexMetaData.State.OPEN) {
listener.onResponse(new Response(true));
return currentState;
}
logger.info("[{}] opening index", request.index);
MetaData.Builder mdBuilder = MetaData.builder()
.metaData(currentState.metaData())
.put(IndexMetaData.newIndexMetaDataBuilder(currentState.metaData().index(request.index)).state(IndexMetaData.State.OPEN));
ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks())
.removeIndexBlock(request.index, INDEX_CLOSED_BLOCK);
ClusterState updatedState = ClusterState.builder().state(currentState).metaData(mdBuilder).blocks(blocks).build();
RoutingTable.Builder rtBuilder = RoutingTable.builder().routingTable(updatedState.routingTable());
IndexRoutingTable.Builder indexRoutingBuilder = new IndexRoutingTable.Builder(request.index)
.initializeEmpty(updatedState.metaData().index(request.index), false);
rtBuilder.add(indexRoutingBuilder);
RoutingAllocation.Result routingResult = shardsAllocation.reroute(newClusterStateBuilder().state(updatedState).routingTable(rtBuilder).build());
return ClusterState.builder().state(updatedState).routingResult(routingResult).build();
}
@Override public void clusterStateProcessed(ClusterState clusterState) {
listener.onResponse(new Response(true));
}
});
}
public static interface Listener {
void onResponse(Response response);
void onFailure(Throwable t);
}
public static class Request {
final String index;
TimeValue timeout = TimeValue.timeValueSeconds(10);
public Request(String index) {
this.index = index;
}
public Request timeout(TimeValue timeout) {
this.timeout = timeout;
return this;
}
}
public static class Response {
private final boolean acknowledged;
public Response(boolean acknowledged) {
this.acknowledged = acknowledged;
}
public boolean acknowledged() {
return acknowledged;
}
}
}