Java Code Examples for org.apache.curator.test.Timing#session()
The following examples show how to use
org.apache.curator.test.Timing#session() .
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Example 1
| Source File: TestExhibitorEnsembleProvider.java From xian with Apache License 2.0 | 5 votes |
|
@Test
public void testSimple() throws Exception
{
Exhibitors exhibitors = new Exhibitors(Lists.newArrayList("foo", "bar"), 1000, dummyConnectionStringProvider);
ExhibitorRestClient mockRestClient = new ExhibitorRestClient()
{
@Override
public String getRaw(String hostname, int port, String uriPath, String mimeType) throws Exception
{
return "count=1&port=" + server.getPort() + "&server0=localhost";
}
};
ExhibitorEnsembleProvider provider = new ExhibitorEnsembleProvider(exhibitors, mockRestClient, "/foo", 10, new RetryOneTime(1));
provider.pollForInitialEnsemble();
Timing timing = new Timing();
CuratorZookeeperClient client = new CuratorZookeeperClient(provider, timing.session(), timing.connection(), null, new ExponentialBackoffRetry(timing.milliseconds(), 3));
client.start();
try
{
client.blockUntilConnectedOrTimedOut();
client.getZooKeeper().exists("/", false);
}
catch ( Exception e )
{
Assert.fail("provider.getConnectionString(): " + provider.getConnectionString() + " server.getPort(): " + server.getPort(), e);
}
finally
{
client.close();
}
}
Example 2
| Source File: TestExhibitorEnsembleProvider.java From xian with Apache License 2.0 | 4 votes |
|
@Test
public void testChanging() throws Exception
{
TestingServer secondServer = new TestingServer();
try
{
String mainConnectionString = "count=1&port=" + server.getPort() + "&server0=localhost";
String secondConnectionString = "count=1&port=" + secondServer.getPort() + "&server0=localhost";
final Semaphore semaphore = new Semaphore(0);
final AtomicReference<String> connectionString = new AtomicReference<String>(mainConnectionString);
Exhibitors exhibitors = new Exhibitors(Lists.newArrayList("foo", "bar"), 1000, dummyConnectionStringProvider);
ExhibitorRestClient mockRestClient = new ExhibitorRestClient()
{
@Override
public String getRaw(String hostname, int port, String uriPath, String mimeType) throws Exception
{
semaphore.release();
return connectionString.get();
}
};
ExhibitorEnsembleProvider provider = new ExhibitorEnsembleProvider(exhibitors, mockRestClient, "/foo", 10, new RetryOneTime(1));
provider.pollForInitialEnsemble();
Timing timing = new Timing().multiple(4);
final CuratorZookeeperClient client = new CuratorZookeeperClient(provider, timing.session(), timing.connection(), null, new RetryOneTime(2));
client.start();
try
{
RetryLoop.callWithRetry
(
client,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
client.getZooKeeper().create("/test", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
return null;
}
}
);
connectionString.set(secondConnectionString);
semaphore.drainPermits();
semaphore.acquire();
server.stop(); // create situation where the current zookeeper gets a sys-disconnected
Stat stat = RetryLoop.callWithRetry
(
client,
new Callable<Stat>()
{
@Override
public Stat call() throws Exception
{
return client.getZooKeeper().exists("/test", false);
}
}
);
Assert.assertNull(stat); // it's a different server so should be null
}
finally
{
client.close();
}
}
finally
{
CloseableUtils.closeQuietly(secondServer);
}
}
Example 3
| Source File: TestSessionFailRetryLoop.java From xian with Apache License 2.0 | 4 votes |
|
@Test
public void testRetry() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new RetryOneTime(1));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.RETRY);
retryLoop.start();
try
{
client.start();
final AtomicBoolean secondWasDone = new AtomicBoolean(false);
final AtomicBoolean firstTime = new AtomicBoolean(true);
while ( retryLoop.shouldContinue() )
{
try
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
if ( firstTime.compareAndSet(true, false) )
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
KillSession.kill(client.getZooKeeper(), server.getConnectString());
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
}
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertFalse(firstTime.get());
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
secondWasDone.set(true);
return null;
}
}
);
}
catch ( Exception e )
{
retryLoop.takeException(e);
}
}
Assert.assertTrue(secondWasDone.get());
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 4
| Source File: TestSessionFailRetryLoop.java From xian with Apache License 2.0 | 4 votes |
|
@Test
public void testRetryStatic() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new RetryOneTime(1));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.RETRY);
retryLoop.start();
try
{
client.start();
final AtomicBoolean secondWasDone = new AtomicBoolean(false);
final AtomicBoolean firstTime = new AtomicBoolean(true);
SessionFailRetryLoop.callWithRetry
(
client,
SessionFailRetryLoop.Mode.RETRY,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
if ( firstTime.compareAndSet(true, false) )
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
KillSession.kill(client.getZooKeeper(), server.getConnectString());
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
}
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertFalse(firstTime.get());
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
secondWasDone.set(true);
return null;
}
}
);
return null;
}
}
);
Assert.assertTrue(secondWasDone.get());
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 5
| Source File: TestSessionFailRetryLoop.java From xian with Apache License 2.0 | 4 votes |
|
@Test
public void testBasic() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new RetryOneTime(1));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.FAIL);
retryLoop.start();
try
{
client.start();
try
{
while ( retryLoop.shouldContinue() )
{
try
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
KillSession.kill(client.getZooKeeper(), server.getConnectString());
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
}
catch ( Exception e )
{
retryLoop.takeException(e);
}
}
Assert.fail();
}
catch ( SessionFailRetryLoop.SessionFailedException dummy )
{
// correct
}
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 6
| Source File: TestSessionFailRetryLoop.java From xian with Apache License 2.0 | 4 votes |
|
@Test
public void testBasicStatic() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new RetryOneTime(1));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.FAIL);
retryLoop.start();
try
{
client.start();
try
{
SessionFailRetryLoop.callWithRetry
(
client,
SessionFailRetryLoop.Mode.FAIL,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
KillSession.kill(client.getZooKeeper(), server.getConnectString());
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
return null;
}
}
);
}
catch ( SessionFailRetryLoop.SessionFailedException dummy )
{
// correct
}
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 7
| Source File: BasicTests.java From xian with Apache License 2.0 | 4 votes |
|
@Test
public void testExpiredSession() throws Exception
{
// see http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A4
final Timing timing = new Timing();
final CountDownLatch latch = new CountDownLatch(1);
Watcher watcher = new Watcher()
{
@Override
public void process(WatchedEvent event)
{
if ( event.getState() == Event.KeeperState.Expired )
{
latch.countDown();
}
}
};
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), watcher, new RetryOneTime(2));
client.start();
try
{
final AtomicBoolean firstTime = new AtomicBoolean(true);
RetryLoop.callWithRetry
(
client,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
if ( firstTime.compareAndSet(true, false) )
{
try
{
client.getZooKeeper().create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
}
catch ( KeeperException.NodeExistsException ignore )
{
// ignore
}
KillSession.kill(client.getZooKeeper(), server.getConnectString());
Assert.assertTrue(timing.awaitLatch(latch));
}
ZooKeeper zooKeeper = client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
Assert.assertNotNull(zooKeeper.exists("/foo", false));
return null;
}
}
);
}
finally
{
client.close();
}
}
Example 8
| Source File: TestSessionFailRetryLoop.java From curator with Apache License 2.0 | 4 votes |
|
@Test
public void testRetry() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new ExponentialBackoffRetry(100, 3));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.RETRY);
retryLoop.start();
try
{
client.start();
final AtomicBoolean secondWasDone = new AtomicBoolean(false);
final AtomicBoolean firstTime = new AtomicBoolean(true);
while ( retryLoop.shouldContinue() )
{
try
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
if ( firstTime.compareAndSet(true, false) )
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
client.getZooKeeper().getTestable().injectSessionExpiration();
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
}
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertFalse(firstTime.get());
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
secondWasDone.set(true);
return null;
}
}
);
}
catch ( Exception e )
{
retryLoop.takeException(e);
}
}
Assert.assertTrue(secondWasDone.get());
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 9
| Source File: TestSessionFailRetryLoop.java From curator with Apache License 2.0 | 4 votes |
|
@Test
public void testRetryStatic() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new ExponentialBackoffRetry(100, 3));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.RETRY);
retryLoop.start();
try
{
client.start();
final AtomicBoolean secondWasDone = new AtomicBoolean(false);
final AtomicBoolean firstTime = new AtomicBoolean(true);
SessionFailRetryLoop.callWithRetry
(
client,
SessionFailRetryLoop.Mode.RETRY,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
if ( firstTime.compareAndSet(true, false) )
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
client.getZooKeeper().getTestable().injectSessionExpiration();
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
}
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertFalse(firstTime.get());
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
secondWasDone.set(true);
return null;
}
}
);
return null;
}
}
);
Assert.assertTrue(secondWasDone.get());
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 10
| Source File: TestSessionFailRetryLoop.java From curator with Apache License 2.0 | 4 votes |
|
@Test
public void testBasic() throws Exception
{
final Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new ExponentialBackoffRetry(100, 3));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.FAIL);
retryLoop.start();
try
{
client.start();
try
{
while ( retryLoop.shouldContinue() )
{
try
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
client.getZooKeeper().getTestable().injectSessionExpiration();
timing.sleepABit();
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
}
catch ( Exception e )
{
retryLoop.takeException(e);
}
}
Assert.fail();
}
catch ( SessionFailRetryLoop.SessionFailedException dummy )
{
// correct
}
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 11
| Source File: TestSessionFailRetryLoop.java From curator with Apache License 2.0 | 4 votes |
|
@Test
public void testBasicStatic() throws Exception
{
Timing timing = new Timing();
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), null, new ExponentialBackoffRetry(100, 3));
SessionFailRetryLoop retryLoop = client.newSessionFailRetryLoop(SessionFailRetryLoop.Mode.FAIL);
retryLoop.start();
try
{
client.start();
try
{
SessionFailRetryLoop.callWithRetry
(
client,
SessionFailRetryLoop.Mode.FAIL,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
RetryLoop.callWithRetry
(
client,
new Callable<Void>()
{
@Override
public Void call() throws Exception
{
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
client.getZooKeeper().getTestable().injectSessionExpiration();
client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
Assert.assertNull(client.getZooKeeper().exists("/foo/bar", false));
return null;
}
}
);
return null;
}
}
);
}
catch ( SessionFailRetryLoop.SessionFailedException dummy )
{
// correct
}
}
finally
{
retryLoop.close();
CloseableUtils.closeQuietly(client);
}
}
Example 12
| Source File: BasicTests.java From curator with Apache License 2.0 | 4 votes |
|
@Test
public void testExpiredSession() throws Exception
{
// see http://wiki.apache.org/hadoop/ZooKeeper/FAQ#A4
final Timing timing = new Timing();
final CountDownLatch latch = new CountDownLatch(1);
Watcher watcher = new Watcher()
{
@Override
public void process(WatchedEvent event)
{
if ( event.getState() == Event.KeeperState.Expired )
{
latch.countDown();
}
}
};
final CuratorZookeeperClient client = new CuratorZookeeperClient(server.getConnectString(), timing.session(), timing.connection(), watcher, new RetryOneTime(2));
client.start();
try
{
final AtomicBoolean firstTime = new AtomicBoolean(true);
RetryLoop.callWithRetry
(
client,
new Callable<Object>()
{
@Override
public Object call() throws Exception
{
if ( firstTime.compareAndSet(true, false) )
{
try
{
client.getZooKeeper().create("/foo", new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
}
catch ( KeeperException.NodeExistsException ignore )
{
// ignore
}
client.getZooKeeper().getTestable().injectSessionExpiration();
Assert.assertTrue(timing.awaitLatch(latch));
}
ZooKeeper zooKeeper = client.getZooKeeper();
client.blockUntilConnectedOrTimedOut();
Assert.assertNotNull(zooKeeper.exists("/foo", false));
return null;
}
}
);
}
finally
{
client.close();
}
}
