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* 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
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*/
package org.elasticsearch.test.disruption;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.ClusterStateUpdateTask;
import org.elasticsearch.common.Priority;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.test.InternalTestCluster;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;
public class BlockClusterStateProcessing extends SingleNodeDisruption {
AtomicReference<CountDownLatch> disruptionLatch = new AtomicReference<>();
public BlockClusterStateProcessing(Random random) {
this(null, random);
}
public BlockClusterStateProcessing(String disruptedNode, Random random) {
super(random);
this.disruptedNode = disruptedNode;
}
@Override
public void startDisrupting() {
final String disruptionNodeCopy = disruptedNode;
if (disruptionNodeCopy == null) {
return;
}
ClusterService clusterService = cluster.getInstance(ClusterService.class, disruptionNodeCopy);
if (clusterService == null) {
return;
}
logger.info("delaying cluster state updates on node [{}]", disruptionNodeCopy);
boolean success = disruptionLatch.compareAndSet(null, new CountDownLatch(1));
assert success : "startDisrupting called without waiting on stopDistrupting to complete";
final CountDownLatch started = new CountDownLatch(1);
clusterService.submitStateUpdateTask("service_disruption_block", new ClusterStateUpdateTask(Priority.IMMEDIATE) {
@Override
public boolean runOnlyOnMaster() {
return false;
}
@Override
public ClusterState execute(ClusterState currentState) throws Exception {
started.countDown();
CountDownLatch latch = disruptionLatch.get();
if (latch != null) {
latch.await();
}
return currentState;
}
@Override
public void onFailure(String source, Throwable t) {
logger.error("unexpected error during disruption", t);
}
});
try {
started.await();
} catch (InterruptedException e) {
}
}
@Override
public void stopDisrupting() {
CountDownLatch latch = disruptionLatch.get();
if (latch != null) {
latch.countDown();
}
}
@Override
public void removeAndEnsureHealthy(InternalTestCluster cluster) {
removeFromCluster(cluster);
}
@Override
public TimeValue expectedTimeToHeal() {
return TimeValue.timeValueMinutes(0);
}
}