package org.apache.helix;
/*
* 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 org.I0Itec.zkclient.IZkStateListener;
import org.I0Itec.zkclient.ZkConnection;
import org.apache.helix.manager.zk.ZNRecordSerializer;
import org.apache.helix.manager.zk.ZkClient;
import org.apache.helix.testutil.ZkTestBase;
import org.apache.log4j.Logger;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.Stat;
import org.testng.AssertJUnit;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
public class TestZkClientWrapper extends ZkTestBase {
private static Logger LOG = Logger.getLogger(TestZkClientWrapper.class);
ZkClient _zkClient;
@BeforeClass
public void beforeClass() {
_zkClient = new ZkClient(_zkaddr);
_zkClient.setZkSerializer(new ZNRecordSerializer());
}
@AfterClass
public void afterClass() {
_zkClient.close();
}
@Test()
void testGetStat() {
String path = "/tmp/getStatTest";
_zkClient.deleteRecursive(path);
Stat stat, newStat;
stat = _zkClient.getStat(path);
AssertJUnit.assertNull(stat);
_zkClient.createPersistent(path, true);
stat = _zkClient.getStat(path);
AssertJUnit.assertNotNull(stat);
newStat = _zkClient.getStat(path);
AssertJUnit.assertEquals(stat, newStat);
_zkClient.writeData(path, new ZNRecord("Test"));
newStat = _zkClient.getStat(path);
AssertJUnit.assertNotSame(stat, newStat);
}
@Test()
void testSessioExpire() throws Exception {
IZkStateListener listener = new IZkStateListener() {
@Override
public void handleStateChanged(KeeperState state) throws Exception {
System.out.println("In Old connection New state " + state);
}
@Override
public void handleNewSession() throws Exception {
System.out.println("In Old connection New session");
}
};
_zkClient.subscribeStateChanges(listener);
ZkConnection connection = ((ZkConnection) _zkClient.getConnection());
ZooKeeper zookeeper = connection.getZookeeper();
System.out.println("old sessionId= " + zookeeper.getSessionId());
Watcher watcher = new Watcher() {
@Override
public void process(WatchedEvent event) {
System.out.println("In New connection In process event:" + event);
}
};
ZooKeeper newZookeeper =
new ZooKeeper(connection.getServers(), zookeeper.getSessionTimeout(), watcher,
zookeeper.getSessionId(), zookeeper.getSessionPasswd());
Thread.sleep(3000);
System.out.println("New sessionId= " + newZookeeper.getSessionId());
Thread.sleep(3000);
newZookeeper.close();
Thread.sleep(10000);
connection = ((ZkConnection) _zkClient.getConnection());
zookeeper = connection.getZookeeper();
System.out.println("After session expiry sessionId= " + zookeeper.getSessionId());
}
}