package org.apache.helix.manager.zk;
/*
* 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.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import org.apache.helix.InstanceType;
import org.apache.helix.api.id.StateModelDefId;
import org.apache.helix.participant.MultiClusterControllerTransitionHandlerFactory;
import org.apache.helix.participant.StateMachineEngine;
import org.apache.log4j.Logger;
public class MockMultiClusterController extends ZKHelixManager implements Runnable {
private static Logger LOG = Logger.getLogger(MockMultiClusterController.class);
private final CountDownLatch _startCountDown = new CountDownLatch(1);
private final CountDownLatch _stopCountDown = new CountDownLatch(1);
private final CountDownLatch _waitStopFinishCountDown = new CountDownLatch(1);
public MockMultiClusterController(String zkAddr, String clusterName, String controllerName) {
super(clusterName, controllerName, InstanceType.CONTROLLER_PARTICIPANT, zkAddr);
}
public void syncStop() {
_stopCountDown.countDown();
try {
_waitStopFinishCountDown.await();
} catch (InterruptedException e) {
LOG.error("Interrupted waiting for finish", e);
}
}
public void syncStart() {
// TODO: prevent start multiple times
new Thread(this).start();
try {
_startCountDown.await();
} catch (InterruptedException e) {
LOG.error("Interrupted waiting for start", e);
}
}
@Override
public void run() {
try {
StateMachineEngine stateMach = getStateMachineEngine();
MultiClusterControllerTransitionHandlerFactory lsModelFactory =
new MultiClusterControllerTransitionHandlerFactory(_zkAddress);
stateMach.registerStateModelFactory(StateModelDefId.LeaderStandby, lsModelFactory);
connect();
_startCountDown.countDown();
_stopCountDown.await();
} catch (Exception e) {
LOG.error("exception running controller-manager", e);
} finally {
_startCountDown.countDown();
disconnect();
_waitStopFinishCountDown.countDown();
}
}
public ZkHelixConnection getConn() {
return (ZkHelixConnection)_role.getConnection();
}
public ZkClient getZkClient() {
ZkHelixConnection conn = (ZkHelixConnection)getConn();
return conn._zkclient;
}
public List<ZkCallbackHandler> getHandlers() {
ZkHelixConnection conn = (ZkHelixConnection)getConn();
List<ZkCallbackHandler> handlers = new ArrayList<ZkCallbackHandler>();
for (List<ZkCallbackHandler> handlerList : conn._handlers.values()) {
handlers.addAll(handlerList);
}
return handlers;
}
public ZkHelixMultiClusterController getRole() {
return (ZkHelixMultiClusterController) _role;
}
public ZkHelixController getController() {
return getRole()._controller;
}
}