org.elasticsearch.cluster.coordination.NoMasterBlockService Maven / Gradle / Ivy
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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.cluster.coordination;
import org.elasticsearch.cluster.block.ClusterBlock;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Setting.Property;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.rest.RestStatus;
import java.util.EnumSet;
public class NoMasterBlockService {
public static final int NO_MASTER_BLOCK_ID = 2;
public static final ClusterBlock NO_MASTER_BLOCK_WRITES = new ClusterBlock(NO_MASTER_BLOCK_ID, "no master", true, false, false,
RestStatus.SERVICE_UNAVAILABLE, EnumSet.of(ClusterBlockLevel.WRITE, ClusterBlockLevel.METADATA_WRITE));
public static final ClusterBlock NO_MASTER_BLOCK_ALL = new ClusterBlock(NO_MASTER_BLOCK_ID, "no master", true, true, false,
RestStatus.SERVICE_UNAVAILABLE, ClusterBlockLevel.ALL);
public static final Setting LEGACY_NO_MASTER_BLOCK_SETTING =
new Setting<>("discovery.zen.no_master_block", "write", NoMasterBlockService::parseNoMasterBlock,
Property.Dynamic, Property.NodeScope, Property.Deprecated);
public static final Setting NO_MASTER_BLOCK_SETTING =
new Setting<>("cluster.no_master_block", "write", NoMasterBlockService::parseNoMasterBlock,
Property.Dynamic, Property.NodeScope);
private volatile ClusterBlock noMasterBlock;
public NoMasterBlockService(Settings settings, ClusterSettings clusterSettings) {
this.noMasterBlock = NO_MASTER_BLOCK_SETTING.get(settings);
clusterSettings.addSettingsUpdateConsumer(NO_MASTER_BLOCK_SETTING, this::setNoMasterBlock);
LEGACY_NO_MASTER_BLOCK_SETTING.get(settings); // for deprecation warnings
clusterSettings.addSettingsUpdateConsumer(LEGACY_NO_MASTER_BLOCK_SETTING, b -> {}); // for deprecation warnings
}
private static ClusterBlock parseNoMasterBlock(String value) {
switch (value) {
case "all":
return NO_MASTER_BLOCK_ALL;
case "write":
return NO_MASTER_BLOCK_WRITES;
default:
throw new IllegalArgumentException("invalid no-master block [" + value + "], must be one of [all, write]");
}
}
public ClusterBlock getNoMasterBlock() {
return noMasterBlock;
}
private void setNoMasterBlock(ClusterBlock noMasterBlock) {
this.noMasterBlock = noMasterBlock;
}
}