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* Licensed to Elasticsearch under one or more contributor
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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.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.test.InternalTestCluster;
import java.util.Random;
import static org.junit.Assert.assertFalse;
public abstract class SingleNodeDisruption implements ServiceDisruptionScheme {
protected final ESLogger logger = Loggers.getLogger(getClass());
protected volatile String disruptedNode;
protected volatile InternalTestCluster cluster;
protected final Random random;
public SingleNodeDisruption(String disruptedNode, Random random) {
this(random);
this.disruptedNode = disruptedNode;
}
public SingleNodeDisruption(Random random) {
this.random = new Random(random.nextLong());
}
@Override
public void applyToCluster(InternalTestCluster cluster) {
this.cluster = cluster;
if (disruptedNode == null) {
String[] nodes = cluster.getNodeNames();
disruptedNode = nodes[random.nextInt(nodes.length)];
}
}
@Override
public void removeFromCluster(InternalTestCluster cluster) {
if (disruptedNode != null) {
removeFromNode(disruptedNode, cluster);
}
}
@Override
public synchronized void applyToNode(String node, InternalTestCluster cluster) {
}
@Override
public synchronized void removeFromNode(String node, InternalTestCluster cluster) {
if (disruptedNode == null) {
return;
}
if (!node.equals(disruptedNode)) {
return;
}
stopDisrupting();
disruptedNode = null;
}
@Override
public synchronized void testClusterClosed() {
disruptedNode = null;
}
protected void ensureNodeCount(InternalTestCluster cluster) {
assertFalse("cluster failed to form after disruption was healed", cluster.client().admin().cluster().prepareHealth()
.setWaitForNodes("" + cluster.size())
.setWaitForRelocatingShards(0)
.get().isTimedOut());
}
}