package org.apache.helix.healthcheck;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.
*/
import java.util.Date;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.helix.HelixDataAccessor;
import org.apache.helix.HelixManager;
import org.apache.helix.NotificationContext;
import org.apache.helix.TestHelper;
import org.apache.helix.ZNRecord;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.integration.ZkIntegrationTestBase;
import org.apache.helix.manager.zk.ZKHelixDataAccessor;
import org.apache.helix.manager.zk.ZkBaseDataAccessor;
import org.apache.helix.mock.controller.ClusterController;
import org.apache.helix.mock.participant.MockParticipant;
import org.apache.helix.mock.participant.MockTransition;
import org.apache.helix.model.HealthStat;
import org.apache.helix.model.Message;
import org.apache.helix.tools.ClusterSetup;
import org.apache.helix.tools.ClusterStateVerifier;
import org.apache.helix.tools.ClusterStateVerifier.BestPossAndExtViewZkVerifier;
import org.apache.helix.tools.ClusterStateVerifier.MasterNbInExtViewVerifier;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestDummyAlerts extends ZkIntegrationTestBase
{
public class DummyAlertsTransition extends MockTransition
{
private final AtomicBoolean _done = new AtomicBoolean(false);
@Override
public void doTransition(Message message, NotificationContext context)
{
HelixManager manager = context.getManager();
HelixDataAccessor accessor = manager.getHelixDataAccessor();
Builder keyBuilder = accessor.keyBuilder();
String instance = message.getTgtName();
if (_done.getAndSet(true) == false)
{
for (int i = 0; i < 5; i++)
{
// System.out.println(instance + " sets healthReport: " + "mockAlerts" + i);
accessor.setProperty(keyBuilder.healthReport(instance, "mockAlerts"),
new HealthStat(new ZNRecord("mockAlerts" + i)));
}
}
}
}
@Test()
public void testDummyAlerts() throws Exception
{
// Logger.getRootLogger().setLevel(Level.INFO);
String className = TestHelper.getTestClassName();
String methodName = TestHelper.getTestMethodName();
String clusterName = className + "_" + methodName;
final int n = 5;
MockParticipant[] participants = new MockParticipant[n];
System.out.println("START " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant start
// port
"localhost", // participant name prefix
"TestDB", // resource name prefix
1, // resources
10, // partitions per resource
n, // number of nodes
3, // replicas
"MasterSlave",
true); // do rebalance
ClusterSetup setupTool = new ClusterSetup(ZK_ADDR);
enableHealthCheck(clusterName);
setupTool.getClusterManagementTool()
.addAlert(clusterName,
"EXP(decay(1.0)(*.defaultPerfCounters@defaultPerfCounters.availableCPUs))CMP(GREATER)CON(2)");
// start controller
ClusterController controller =
new ClusterController(clusterName, "controller_0", ZK_ADDR);
controller.syncStart();
// start participants
for (int i = 0; i < n; i++)
{
String instanceName = "localhost_" + (12918 + i);
participants[i] =
new MockParticipant(clusterName,
instanceName,
ZK_ADDR,
new DummyAlertsTransition());
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier.verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR,
clusterName));
Assert.assertTrue(result);
result =
ClusterStateVerifier.verifyByZkCallback(new BestPossAndExtViewZkVerifier(ZK_ADDR,
clusterName));
Assert.assertTrue(result);
// other verifications go here
ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
Builder keyBuilder = accessor.keyBuilder();
for (int i = 0; i < n; i++)
{
String instance = "localhost_" + (12918 + i);
ZNRecord record = null;
for(int j = 0; j < 10; j++)
{
record =
accessor.getProperty(keyBuilder.healthReport(instance, "mockAlerts")).getRecord();
if(record.getId().equals("mockAlerts4"))
{
break;
}
else
{
Thread.sleep(500);
}
}
Assert.assertEquals(record.getId(), "mockAlerts4");
}
// clean up
Thread.sleep(1000);
controller.syncStop();
for (int i = 0; i < 5; i++)
{
participants[i].syncStop();
}
System.out.println("END " + clusterName + " at "
+ new Date(System.currentTimeMillis()));
}
}