package org.apache.helix.util;
/*
* 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 org.I0Itec.zkclient.ZkServer;
import org.I0Itec.zkclient.exception.ZkNoNodeException;
import org.apache.helix.TestHelper;
import org.apache.helix.ZNRecord;
import org.apache.helix.manager.zk.ZkClient;
import org.apache.helix.util.ZKClientPool;
import org.testng.Assert;
import org.testng.annotations.Test;
public class TestZKClientPool
{
@Test
public void test() throws Exception
{
String testName = "TestZKClientPool";
System.out.println("START " + testName + " at " + new Date(System.currentTimeMillis()));
String zkAddr = "localhost:2189";
ZkServer zkServer = TestHelper.startZkSever(zkAddr);
ZkClient zkClient = ZKClientPool.getZkClient(zkAddr);
zkClient.createPersistent("/" + testName, new ZNRecord(testName));
ZNRecord record = zkClient.readData("/" + testName);
Assert.assertEquals(record.getId(), testName);
TestHelper.stopZkServer(zkServer);
// restart zk
zkServer = TestHelper.startZkSever(zkAddr);
try
{
zkClient = ZKClientPool.getZkClient(zkAddr);
record = zkClient.readData("/" + testName);
Assert.fail("should fail on zk no node exception");
} catch (ZkNoNodeException e)
{
// OK
} catch (Exception e)
{
Assert.fail("should not fail on exception other than ZkNoNodeException");
}
zkClient.createPersistent("/" + testName, new ZNRecord(testName));
record = zkClient.readData("/" + testName);
Assert.assertEquals(record.getId(), testName);
zkClient.close();
TestHelper.stopZkServer(zkServer);
System.out.println("END " + testName + " at " + new Date(System.currentTimeMillis()));
}
}