/**
* 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.
*/
package org.apache.curator.framework.client;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.framework.recipes.leader.LeaderSelector;
import org.apache.curator.framework.recipes.leader.LeaderSelectorListener;
import org.apache.curator.framework.recipes.leader.LeaderSelectorListenerAdapter;
import org.apache.curator.framework.state.ConnectionState;
import org.apache.curator.framework.state.ConnectionStateListener;
import org.apache.curator.retry.RetryOneTime;
import org.apache.curator.test.BaseClassForTests;
import org.apache.curator.test.TestingServer;
import org.apache.curator.test.Timing;
import org.apache.curator.utils.CloseableUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
public class TestResetConnectionWithBackgroundFailure extends BaseClassForTests
{
private final Logger log = LoggerFactory.getLogger(getClass());
@BeforeMethod
@Override
public void setup() throws Exception
{
super.setup();
}
@Test
public void testConnectionStateListener() throws Exception
{
server.close();
final StringBuilder listenerSequence = new StringBuilder();
LeaderSelector selector = null;
Timing timing = new Timing();
CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(100));
try
{
client.start();
timing.sleepABit();
LeaderSelectorListener listenerLeader = new LeaderSelectorListenerAdapter()
{
@Override
public void takeLeadership(CuratorFramework client) throws Exception
{
Thread.currentThread().join();
}
};
selector = new LeaderSelector(client, "/leader", listenerLeader);
selector.autoRequeue();
selector.start();
ConnectionStateListener listener1 = new ConnectionStateListener()
{
@Override
public void stateChanged(CuratorFramework client, ConnectionState newState)
{
listenerSequence.append("-").append(newState);
}
};
client.getConnectionStateListenable().addListener(listener1);
log.debug("Starting ZK server");
server = new TestingServer(server.getPort());
timing.forWaiting().sleepABit();
log.debug("Stopping ZK server");
server.close();
timing.forWaiting().sleepABit();
log.debug("Starting ZK server");
server = new TestingServer(server.getPort());
timing.forWaiting().sleepABit();
log.debug("Stopping ZK server");
server.close();
timing.forWaiting().sleepABit();
Assert.assertEquals(listenerSequence.toString(), "-CONNECTED-SUSPENDED-LOST-RECONNECTED-SUSPENDED-LOST");
}
finally
{
CloseableUtils.closeQuietly(selector);
CloseableUtils.closeQuietly(client);
}
}
}