org.elasticsearch.action.admin.cluster.configuration.TransportClearVotingConfigExclusionsAction Maven / Gradle / Ivy
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/*
* 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.configuration;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.ElasticsearchTimeoutException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.master.TransportMasterNodeAction;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ClusterStateObserver;
import org.elasticsearch.cluster.ClusterStateObserver.Listener;
import org.elasticsearch.cluster.ClusterStateUpdateTask;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.coordination.CoordinationMetaData;
import org.elasticsearch.cluster.coordination.CoordinationMetaData.VotingConfigExclusion;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.threadpool.ThreadPool.Names;
import org.elasticsearch.transport.TransportService;
import java.io.IOException;
import java.util.function.Predicate;
public class TransportClearVotingConfigExclusionsAction
extends TransportMasterNodeAction {
private static final Logger logger = LogManager.getLogger(TransportClearVotingConfigExclusionsAction.class);
@Inject
public TransportClearVotingConfigExclusionsAction(TransportService transportService, ClusterService clusterService,
ThreadPool threadPool, ActionFilters actionFilters,
IndexNameExpressionResolver indexNameExpressionResolver) {
super(ClearVotingConfigExclusionsAction.NAME, transportService, clusterService, threadPool, actionFilters,
ClearVotingConfigExclusionsRequest::new, indexNameExpressionResolver);
}
@Override
protected String executor() {
return Names.SAME;
}
@Override
protected ClearVotingConfigExclusionsResponse read(StreamInput in) throws IOException {
return new ClearVotingConfigExclusionsResponse(in);
}
@Override
protected void masterOperation(ClearVotingConfigExclusionsRequest request, ClusterState initialState,
ActionListener listener) throws Exception {
final long startTimeMillis = threadPool.relativeTimeInMillis();
final Predicate allExclusionsRemoved = newState -> {
for (VotingConfigExclusion tombstone : initialState.getVotingConfigExclusions()) {
// NB checking for the existence of any node with this persistent ID, because persistent IDs are how votes are counted.
if (newState.nodes().nodeExists(tombstone.getNodeId())) {
return false;
}
}
return true;
};
if (request.getWaitForRemoval() && allExclusionsRemoved.test(initialState) == false) {
final ClusterStateObserver clusterStateObserver = new ClusterStateObserver(initialState, clusterService, request.getTimeout(),
logger, threadPool.getThreadContext());
clusterStateObserver.waitForNextChange(new Listener() {
@Override
public void onNewClusterState(ClusterState state) {
submitClearVotingConfigExclusionsTask(request, startTimeMillis, listener);
}
@Override
public void onClusterServiceClose() {
listener.onFailure(new ElasticsearchException("cluster service closed while waiting for removal of nodes "
+ initialState.getVotingConfigExclusions()));
}
@Override
public void onTimeout(TimeValue timeout) {
listener.onFailure(new ElasticsearchTimeoutException(
"timed out waiting for removal of nodes; if nodes should not be removed, set waitForRemoval to false. "
+ initialState.getVotingConfigExclusions()));
}
}, allExclusionsRemoved);
} else {
submitClearVotingConfigExclusionsTask(request, startTimeMillis, listener);
}
}
private void submitClearVotingConfigExclusionsTask(ClearVotingConfigExclusionsRequest request, long startTimeMillis,
ActionListener listener) {
clusterService.submitStateUpdateTask("clear-voting-config-exclusions", new ClusterStateUpdateTask(Priority.URGENT) {
@Override
public ClusterState execute(ClusterState currentState) {
final CoordinationMetaData newCoordinationMetaData =
CoordinationMetaData.builder(currentState.coordinationMetaData()).clearVotingConfigExclusions().build();
final MetaData newMetaData = MetaData.builder(currentState.metaData()).
coordinationMetaData(newCoordinationMetaData).build();
return ClusterState.builder(currentState).metaData(newMetaData).build();
}
@Override
public void onFailure(String source, Exception e) {
listener.onFailure(e);
}
@Override
public TimeValue timeout() {
return TimeValue.timeValueMillis(request.getTimeout().millis() + startTimeMillis - threadPool.relativeTimeInMillis());
}
@Override
public void clusterStateProcessed(String source, ClusterState oldState, ClusterState newState) {
listener.onResponse(new ClearVotingConfigExclusionsResponse());
}
});
}
@Override
protected ClusterBlockException checkBlock(ClearVotingConfigExclusionsRequest request, ClusterState state) {
return state.blocks().globalBlockedException(ClusterBlockLevel.METADATA_WRITE);
}
}