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org.elasticsearch.action.admin.cluster.settings.TransportClusterUpdateSettingsAction Maven / Gradle / Ivy
ElasticSearch - Open Source, Distributed, RESTful Search Engine
/*
* 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.settings;
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.ClusterStateUpdateTask;
import org.elasticsearch.cluster.ProcessedClusterStateUpdateTask;
import org.elasticsearch.cluster.block.ClusterBlocks;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.routing.allocation.AllocationService;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.settings.ClusterDynamicSettings;
import org.elasticsearch.cluster.settings.DynamicSettings;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
import static org.elasticsearch.cluster.ClusterState.newClusterStateBuilder;
/**
*
*/
public class TransportClusterUpdateSettingsAction extends TransportMasterNodeOperationAction {
private final AllocationService allocationService;
private final DynamicSettings dynamicSettings;
@Inject
public TransportClusterUpdateSettingsAction(Settings settings, TransportService transportService, ClusterService clusterService, ThreadPool threadPool,
AllocationService allocationService, @ClusterDynamicSettings DynamicSettings dynamicSettings) {
super(settings, transportService, clusterService, threadPool);
this.allocationService = allocationService;
this.dynamicSettings = dynamicSettings;
}
@Override
protected String executor() {
return ThreadPool.Names.MANAGEMENT;
}
@Override
protected String transportAction() {
return ClusterUpdateSettingsAction.NAME;
}
@Override
protected ClusterUpdateSettingsRequest newRequest() {
return new ClusterUpdateSettingsRequest();
}
@Override
protected ClusterUpdateSettingsResponse newResponse() {
return new ClusterUpdateSettingsResponse();
}
@Override
protected ClusterUpdateSettingsResponse masterOperation(final ClusterUpdateSettingsRequest request, ClusterState state) throws ElasticSearchException {
final AtomicReference failureRef = new AtomicReference();
final CountDownLatch latch = new CountDownLatch(1);
final ImmutableSettings.Builder transientUpdates = ImmutableSettings.settingsBuilder();
final ImmutableSettings.Builder persistentUpdates = ImmutableSettings.settingsBuilder();
clusterService.submitStateUpdateTask("cluster_update_settings", Priority.URGENT, new ProcessedClusterStateUpdateTask() {
@Override
public ClusterState execute(ClusterState currentState) {
try {
boolean changed = false;
ImmutableSettings.Builder transientSettings = ImmutableSettings.settingsBuilder();
transientSettings.put(currentState.metaData().transientSettings());
for (Map.Entry entry : request.transientSettings().getAsMap().entrySet()) {
if (dynamicSettings.hasDynamicSetting(entry.getKey()) || entry.getKey().startsWith("logger.")) {
String error = dynamicSettings.validateDynamicSetting(entry.getKey(), entry.getValue());
if (error == null) {
transientSettings.put(entry.getKey(), entry.getValue());
transientUpdates.put(entry.getKey(), entry.getValue());
changed = true;
} else {
logger.warn("ignoring transient setting [{}], [{}]", entry.getKey(), error);
}
} else {
logger.warn("ignoring transient setting [{}], not dynamically updateable", entry.getKey());
}
}
ImmutableSettings.Builder persistentSettings = ImmutableSettings.settingsBuilder();
persistentSettings.put(currentState.metaData().persistentSettings());
for (Map.Entry entry : request.persistentSettings().getAsMap().entrySet()) {
if (dynamicSettings.hasDynamicSetting(entry.getKey()) || entry.getKey().startsWith("logger.")) {
String error = dynamicSettings.validateDynamicSetting(entry.getKey(), entry.getValue());
if (error == null) {
persistentSettings.put(entry.getKey(), entry.getValue());
persistentUpdates.put(entry.getKey(), entry.getValue());
changed = true;
} else {
logger.warn("ignoring persistent setting [{}], [{}]", entry.getKey(), error);
}
} else {
logger.warn("ignoring persistent setting [{}], not dynamically updateable", entry.getKey());
}
}
if (!changed) {
latch.countDown();
return currentState;
}
MetaData.Builder metaData = MetaData.builder().metaData(currentState.metaData())
.persistentSettings(persistentSettings.build())
.transientSettings(transientSettings.build());
ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks());
boolean updatedReadOnly = metaData.persistentSettings().getAsBoolean(MetaData.SETTING_READ_ONLY, false) || metaData.transientSettings().getAsBoolean(MetaData.SETTING_READ_ONLY, false);
if (updatedReadOnly) {
blocks.addGlobalBlock(MetaData.CLUSTER_READ_ONLY_BLOCK);
} else {
blocks.removeGlobalBlock(MetaData.CLUSTER_READ_ONLY_BLOCK);
}
return ClusterState.builder().state(currentState).metaData(metaData).blocks(blocks).build();
} catch (Exception e) {
latch.countDown();
logger.warn("failed to update cluster settings", e);
return currentState;
} finally {
// we don't release the latch here, only after we rerouted
}
}
@Override
public void clusterStateProcessed(ClusterState clusterState) {
// now, reroute
clusterService.submitStateUpdateTask("reroute_after_cluster_update_settings", Priority.URGENT, new ClusterStateUpdateTask() {
@Override
public ClusterState execute(ClusterState currentState) {
try {
// now, reroute in case things change that require it (like number of replicas)
RoutingAllocation.Result routingResult = allocationService.reroute(currentState);
return newClusterStateBuilder().state(currentState).routingResult(routingResult).build();
} finally {
latch.countDown();
}
}
});
}
});
try {
latch.await();
} catch (InterruptedException e) {
failureRef.set(e);
}
if (failureRef.get() != null) {
if (failureRef.get() instanceof ElasticSearchException) {
throw (ElasticSearchException) failureRef.get();
} else {
throw new ElasticSearchException(failureRef.get().getMessage(), failureRef.get());
}
}
return new ClusterUpdateSettingsResponse(transientUpdates.build(), persistentUpdates.build());
}
}
