org.elasticsearch.test.disruption.BlockClusterStateProcessing Maven / Gradle / Ivy
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package org.elasticsearch.test.disruption;
import org.apache.logging.log4j.core.util.Throwables;
import org.elasticsearch.cluster.service.ClusterService;
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 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 stopDisrupting to complete";
final CountDownLatch started = new CountDownLatch(1);
clusterService.getClusterApplierService().runOnApplierThread("service_disruption_block",
currentState -> {
started.countDown();
CountDownLatch latch = disruptionLatch.get();
if (latch != null) {
try {
latch.await();
} catch (InterruptedException e) {
Throwables.rethrow(e);
}
}
}, (source, e) -> logger.error("unexpected error during disruption", e),
Priority.IMMEDIATE);
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);
}
}
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