package org.apache.helix.integration;
/*
* 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.
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import java.util.Date;
import org.apache.helix.HelixConstants.ChangeType;
import org.apache.helix.HelixManager;
import org.apache.helix.NotificationContext;
import org.apache.helix.NotificationContext.Type;
import org.apache.helix.PropertyKey.Builder;
import org.apache.helix.TestHelper;
import org.apache.helix.ZNRecord;
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.MockJobIntf;
import org.apache.helix.model.LiveInstance;
import org.apache.helix.participant.CustomCodeCallbackHandler;
import org.apache.helix.participant.HelixCustomCodeRunner;
import org.apache.helix.tools.ClusterStateVerifier;
import org.apache.log4j.Logger;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestHelixCustomCodeRunner extends ZkIntegrationTestBase {
private static Logger LOG = Logger.getLogger(TestHelixCustomCodeRunner.class);
private final String _clusterName = "CLUSTER_" + getShortClassName();
private final int _nodeNb = 5;
private final int _startPort = 12918;
private final MockCallback _callback = new MockCallback();
class MockCallback implements CustomCodeCallbackHandler {
boolean _isCallbackInvoked;
@Override
public void onCallback(NotificationContext context) {
HelixManager manager = context.getManager();
Type type = context.getType();
_isCallbackInvoked = true;
// System.out.println(type + ": TestCallback invoked on " + manager.getInstanceName());
}
}
class MockJob implements MockJobIntf {
@Override
public void doPreConnectJob(HelixManager manager) {
try {
// delay the start of the 1st participant
// so there will be a leadership transfer from localhost_12919 to 12918
if (manager.getInstanceName().equals("localhost_12918")) {
Thread.sleep(2000);
}
HelixCustomCodeRunner customCodeRunner = new HelixCustomCodeRunner(manager, ZK_ADDR);
customCodeRunner.invoke(_callback).on(ChangeType.LIVE_INSTANCE)
.usingLeaderStandbyModel("TestParticLeader").start();
} catch (Exception e) {
LOG.error("Exception do pre-connect job", e);
}
}
@Override
public void doPostConnectJob(HelixManager manager) {
// TODO Auto-generated method stub
}
}
@Test
public void testCustomCodeRunner() throws Exception {
System.out.println("START " + _clusterName + " at " + new Date(System.currentTimeMillis()));
TestHelper.setupCluster(_clusterName, ZK_ADDR, _startPort, "localhost", // participant name
// prefix
"TestDB", // resource name prefix
1, // resourceNb
5, // partitionNb
_nodeNb, // nodesNb
_nodeNb, // replica
"MasterSlave", true);
ClusterControllerManager controller =
new ClusterControllerManager(ZK_ADDR, _clusterName, "controller_0");
controller.syncStart();
MockParticipantManager[] participants = new MockParticipantManager[5];
for (int i = 0; i < _nodeNb; i++) {
String instanceName = "localhost_" + (_startPort + i);
MockJob job = new MockJob();
participants[i] = new MockParticipantManager(ZK_ADDR, _clusterName, instanceName);
job.doPreConnectJob(participants[i]);
participants[i].syncStart();
}
boolean result =
ClusterStateVerifier.verifyByPolling(new ClusterStateVerifier.BestPossAndExtViewZkVerifier(
ZK_ADDR, _clusterName));
Assert.assertTrue(result);
Thread.sleep(1000); // wait for the INIT type callback to finish
Assert.assertTrue(_callback._isCallbackInvoked);
_callback._isCallbackInvoked = false;
// add a new live instance
// ZkClient zkClient = new ZkClient(ZK_ADDR);
// zkClient.setZkSerializer(new ZNRecordSerializer());
ZKHelixDataAccessor accessor =
new ZKHelixDataAccessor(_clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
Builder keyBuilder = accessor.keyBuilder();
LiveInstance newLiveIns = new LiveInstance("newLiveInstance");
newLiveIns.setHelixVersion("0.6.0");
newLiveIns.setSessionId("randomSessionId");
accessor.setProperty(keyBuilder.liveInstance("newLiveInstance"), newLiveIns);
Thread.sleep(1000); // wait for the CALLBACK type callback to finish
Assert.assertTrue(_callback._isCallbackInvoked);
// clean up
controller.syncStop();
for (int i = 0; i < _nodeNb; i++) {
participants[i].syncStop();
}
System.out.println("END " + _clusterName + " at " + new Date(System.currentTimeMillis()));
}
}