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.Map;
import java.util.Set;
import org.apache.helix.HelixDataAccessor;
import org.apache.helix.HelixManager;
import org.apache.helix.NotificationContext;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.TestHelper;
import org.apache.helix.ZNRecord;
import org.apache.helix.alerts.AlertValueAndStatus;
import org.apache.helix.api.State;
import org.apache.helix.healthcheck.ParticipantHealthReportCollectorImpl;
import org.apache.helix.integration.ZkIntegrationTestBase;
import org.apache.helix.integration.manager.ClusterControllerManager;
import org.apache.helix.integration.manager.MockParticipantManager;
import org.apache.helix.manager.zk.ZKHelixDataAccessor;
import org.apache.helix.manager.zk.ZkBaseDataAccessor;
import org.apache.helix.mock.participant.MockEspressoHealthReportProvider;
import org.apache.helix.mock.participant.MockTransition;
import org.apache.helix.model.Message;
import org.apache.helix.tools.ClusterSetup;
import org.apache.helix.tools.ClusterStateVerifier;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
public class TestStalenessAlert extends ZkIntegrationTestBase {
protected ClusterSetup _setupTool = null;
protected final String _alertStr = "EXP(decay(1)(localhost_*.reportingage))CMP(GREATER)CON(600)";
protected final String _alertStatusStr = _alertStr + " : (localhost_12918.reportingage)";
protected final String _dbName = "TestDB0";
@BeforeClass()
public void beforeClass() throws Exception {
_setupTool = new ClusterSetup(_gZkClient);
}
@AfterClass
public void afterClass() {
}
public class StalenessAlertTransition extends MockTransition {
@Override
public void doTransition(Message message, NotificationContext context) {
HelixManager manager = context.getManager();
HelixDataAccessor accessor = manager.getHelixDataAccessor();
State fromState = message.getTypedFromState();
State toState = message.getTypedToState();
String instance = message.getTgtName();
if (fromState.toString().equalsIgnoreCase("SLAVE")
&& toState.toString().equalsIgnoreCase("MASTER")) {
// add a stat and report to ZK
// perhaps should keep reporter per instance...
ParticipantHealthReportCollectorImpl reporter =
new ParticipantHealthReportCollectorImpl(manager, instance);
MockEspressoHealthReportProvider provider = new MockEspressoHealthReportProvider();
reporter.addHealthReportProvider(provider);
String statName = "latency";
provider.setStat(_dbName, statName, "15");
reporter.transmitHealthReports();
/*
* for (int i = 0; i < 5; i++)
* {
* accessor.setProperty(PropertyType.HEALTHREPORT,
* new ZNRecord("mockAlerts" + i),
* instance,
* "mockAlerts");
* try
* {
* Thread.sleep(1000);
* }
* catch (InterruptedException e)
* {
* // TODO Auto-generated catch block
* e.printStackTrace();
* }
* }
*/
}
}
}
@Test()
public void testStalenessAlert() throws Exception {
String clusterName = getShortClassName();
MockParticipantManager[] participants = new MockParticipantManager[5];
System.out.println("START TestStalenessAlert 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
5, // number of nodes //change back to 5!!!
3, // replicas //change back to 3!!!
"MasterSlave", true); // do rebalance
// enableHealthCheck(clusterName);
_setupTool.getClusterManagementTool().addAlert(clusterName, _alertStr);
ClusterControllerManager controller =
new ClusterControllerManager(ZK_ADDR, clusterName, "controller_0");
controller.syncStart();
// start participants
for (int i = 0; i < 5; i++) // !!!change back to 5
{
String instanceName = "localhost_" + (12918 + i);
participants[i] =
new MockParticipantManager(ZK_ADDR, clusterName, instanceName);
participants[i].setTransition(new StalenessAlertTransition());
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
ZK_ADDR, clusterName));
Assert.assertTrue(result);
// HealthAggregationTask is supposed to run by a timer every 30s
// To make sure HealthAggregationTask is run, we invoke it explicitly for this test
new HealthStatsAggregator(controller).aggregate();
// sleep for a few seconds to give stats stage time to trigger
Thread.sleep(3000);
// other verifications go here
ZKHelixDataAccessor accessor =
new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
Builder keyBuilder = accessor.keyBuilder();
// for (int i = 0; i < 1; i++) //change 1 back to 5
// {
// String instance = "localhost_" + (12918 + i);
// String instance = "localhost_12918";
ZNRecord record = accessor.getProperty(keyBuilder.alertStatus()).getRecord();
Map<String, Map<String, String>> recMap = record.getMapFields();
Set<String> keySet = recMap.keySet();
Map<String, String> alertStatusMap = recMap.get(_alertStatusStr);
String val = alertStatusMap.get(AlertValueAndStatus.VALUE_NAME);
boolean fired = Boolean.parseBoolean(alertStatusMap.get(AlertValueAndStatus.FIRED_NAME));
// Assert.assertEquals(Double.parseDouble(val), Double.parseDouble("75.0"));
// Assert.assertFalse(fired);
// }
// clean up
controller.syncStop();
for (int i = 0; i < 5; i++) {
participants[i].syncStop();
}
System.out.println("END TestStalenessAlert at " + new Date(System.currentTimeMillis()));
}
}