/**
* 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 com.google.common.collect.Queues;
import com.google.common.io.Closeables;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.framework.recipes.BaseClassForTests;
import org.apache.curator.framework.recipes.nodes.PersistentEphemeralNode;
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.TestingServer;
import org.apache.curator.test.Timing;
import org.apache.curator.utils.DebugUtils;
import org.testng.Assert;
import org.testng.annotations.Test;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
// NOTE: these tests are in Framework as they use the PersistentEphemeralNode recipe
public class TestBackgroundStates extends BaseClassForTests
{
@Test
public void testListenersReconnectedIsOK() throws Exception
{
server.close();
Timing timing = new Timing();
CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
try
{
client.start();
PersistentEphemeralNode node = new PersistentEphemeralNode(client, PersistentEphemeralNode.Mode.EPHEMERAL, "/abc/node", "hello".getBytes());
node.start();
final CountDownLatch connectedLatch = new CountDownLatch(1);
final CountDownLatch reconnectedLatch = new CountDownLatch(1);
final AtomicReference<ConnectionState> lastState = new AtomicReference<ConnectionState>();
ConnectionStateListener listener = new ConnectionStateListener()
{
@Override
public void stateChanged(CuratorFramework client, ConnectionState newState)
{
lastState.set(newState);
if ( newState == ConnectionState.CONNECTED )
{
connectedLatch.countDown();
}
if ( newState == ConnectionState.RECONNECTED )
{
reconnectedLatch.countDown();
}
}
};
client.getConnectionStateListenable().addListener(listener);
timing.sleepABit();
server = new TestingServer(server.getPort());
Assert.assertTrue(timing.awaitLatch(connectedLatch));
timing.sleepABit();
Assert.assertTrue(node.waitForInitialCreate(timing.forWaiting().milliseconds(), TimeUnit.MILLISECONDS));
server.close();
timing.sleepABit();
server = new TestingServer(server.getPort());
timing.sleepABit();
Assert.assertTrue(timing.awaitLatch(reconnectedLatch));
timing.sleepABit();
Assert.assertEquals(lastState.get(), ConnectionState.RECONNECTED);
}
finally
{
Closeables.closeQuietly(client);
}
}
@Test
public void testConnectionStateListener() throws Exception
{
server.close();
Timing timing = new Timing();
CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(timing.milliseconds()));
try
{
client.start();
PersistentEphemeralNode node = new PersistentEphemeralNode(client, PersistentEphemeralNode.Mode.EPHEMERAL, "/abc/node", "hello".getBytes());
node.start();
final BlockingQueue<ConnectionState> stateVector = Queues.newLinkedBlockingQueue(1);
ConnectionStateListener listener = new ConnectionStateListener()
{
@Override
public void stateChanged(CuratorFramework client, ConnectionState newState)
{
stateVector.offer(newState);
}
};
Timing waitingTiming = timing.forWaiting();
client.getConnectionStateListenable().addListener(listener);
server = new TestingServer(server.getPort());
Assert.assertEquals(stateVector.poll(waitingTiming.milliseconds(), TimeUnit.MILLISECONDS), ConnectionState.CONNECTED);
server.close();
Assert.assertEquals(stateVector.poll(waitingTiming.milliseconds(), TimeUnit.MILLISECONDS), ConnectionState.SUSPENDED);
Assert.assertEquals(stateVector.poll(waitingTiming.milliseconds(), TimeUnit.MILLISECONDS), ConnectionState.LOST);
server = new TestingServer(server.getPort());
Assert.assertEquals(stateVector.poll(waitingTiming.milliseconds(), TimeUnit.MILLISECONDS), ConnectionState.RECONNECTED);
server.close();
Assert.assertEquals(stateVector.poll(waitingTiming.milliseconds(), TimeUnit.MILLISECONDS), ConnectionState.SUSPENDED);
Assert.assertEquals(stateVector.poll(waitingTiming.milliseconds(), TimeUnit.MILLISECONDS), ConnectionState.LOST);
}
finally
{
Closeables.closeQuietly(client);
}
}
}