Package org.apache.curator.test

Examples of org.apache.curator.test.Timing

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    @Test
    public void testInterruptLeadership() throws Exception
    {
        LeaderSelector selector = null;
        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        try
        {
            client.start();

            final CountDownLatch isLeaderLatch = new CountDownLatch(1);
            final CountDownLatch losingLeaderLatch = new CountDownLatch(1);
            LeaderSelectorListener listener = new LeaderSelectorListener()
            {
                @Override
                public void takeLeadership(CuratorFramework client) throws Exception
                {
                    isLeaderLatch.countDown();
                    try
                    {
                        Thread.currentThread().join();
                    }
                    finally
                    {
                        losingLeaderLatch.countDown();
                    }
                }

                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                }
            };

            selector = new LeaderSelector(client, "/leader", listener);
            selector.start();

            Assert.assertTrue(timing.awaitLatch(isLeaderLatch));
            selector.interruptLeadership();
            Assert.assertTrue(timing.awaitLatch(losingLeaderLatch));
        }
        finally
        {
            Closeables.closeQuietly(selector);
            Closeables.closeQuietly(client);
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    @Test
    public void     testCustomExecutor() throws Exception
    {
        final int       ITERATIONS = 1000;

        Timing                      timing = new Timing();
        DistributedQueue<String>    queue = null;
        final CuratorFramework      client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            final CountDownLatch    latch = new CountDownLatch(ITERATIONS);
            QueueConsumer<String>   consumer = new QueueConsumer<String>()
            {
                @Override
                public void consumeMessage(String message) throws Exception
                {
                    latch.countDown();
                }

                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                }
            };
            QueueSerializer<String> serializer = new QueueSerializer<String>()
            {
                @Override
                public byte[] serialize(String item)
                {
                    return item.getBytes();
                }

                @Override
                public String deserialize(byte[] bytes)
                {
                    return new String(bytes);
                }
            };

            Executor        executor = Executors.newCachedThreadPool();

            final Set<String>       used = Sets.newHashSet();
            final Set<String>       doubleUsed = Sets.newHashSet();
            queue = new DistributedQueue<String>
            (
                client,
                consumer,
                serializer,
                QUEUE_PATH,
                QueueBuilder.defaultThreadFactory,
                executor,
                Integer.MAX_VALUE,
                false,
                "/lock",
                QueueBuilder.NOT_SET,
                true,
                5000
            )
            {
                @SuppressWarnings("SimplifiableConditionalExpression")
                @Override
                protected boolean processWithLockSafety(String itemNode, DistributedQueue.ProcessType type) throws Exception
                {
                    if ( used.contains(itemNode) )
                    {
                        doubleUsed.add(itemNode);
                    }
                    else
                    {
                        used.add(itemNode);
                    }
                    return (client.getState() == CuratorFrameworkState.STARTED) ? super.processWithLockSafety(itemNode, type) : false;
                }
            };
            queue.start();

            for ( int i = 0; i < ITERATIONS; ++i )
            {
                queue.put(Integer.toString(i));
            }

            Assert.assertTrue(timing.awaitLatch(latch));

            Assert.assertTrue(doubleUsed.size() == 0, doubleUsed.toString());
        }
        finally
        {
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    }

    @Test
    public void     testWithNamespaceAndLostSessionAlt() throws Exception
    {
        Timing                  timing = new Timing();
        CuratorFramework        client = CuratorFrameworkFactory.builder().connectString(server.getConnectString())
            .sessionTimeoutMs(timing.session())
            .connectionTimeoutMs(timing.connection())
            .retryPolicy(new ExponentialBackoffRetry(100, 3))
            .build();
        try
        {
            client.start();

            CuratorFramework        namespaceClient = client.usingNamespace("foo");
            namespaceClient.create().forPath("/test-me");

            final CountDownLatch            latch = new CountDownLatch(1);
            final Semaphore                 semaphore = new Semaphore(0);
            ConnectionStateListener         listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) )
                    {
                        semaphore.release();
                    }
                    else if ( newState == ConnectionState.RECONNECTED )
                    {
                        latch.countDown();
                    }
                }
            };
            namespaceClient.getConnectionStateListenable().addListener(listener);
            server.stop();

            Assert.assertTrue(timing.acquireSemaphore(semaphore));
            try
            {
                namespaceClient.delete().guaranteed().forPath("/test-me");
                Assert.fail();
            }
            catch ( KeeperException.ConnectionLossException e )
            {
                // expected
            }
            Assert.assertTrue(timing.acquireSemaphore(semaphore));

            timing.sleepABit();

            server = new TestingServer(server.getPort(), server.getTempDirectory());
            Assert.assertTrue(timing.awaitLatch(latch));

            timing.sleepABit();

            Assert.assertNull(namespaceClient.checkExists().forPath("/test-me"));
        }
        finally
        {
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    @Test
    public void     testBasic() throws Exception
    {
        final String PATH = "/one/two/three";

        Timing                          timing = new Timing();
        CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
        builder.connectString(server.getConnectString()).retryPolicy(new RetryOneTime(1)).connectionTimeoutMs(timing.connection()).sessionTimeoutMs(timing.session());
        CuratorFrameworkImpl            client = new CuratorFrameworkImpl(builder);
        client.start();
        try
        {
            client.create().creatingParentsIfNeeded().forPath(PATH);
            Assert.assertNotNull(client.checkExists().forPath(PATH));

            File    serverDir = server.getTempDirectory();
            int     serverPort = server.getPort();

            server.stop(); // cause the next delete to fail
            server = null;
            try
            {
                client.delete().forPath(PATH);
                Assert.fail();
            }
            catch ( KeeperException.ConnectionLossException e )
            {
                // expected
            }
           
            server = new TestingServer(serverPort, serverDir);
            Assert.assertNotNull(client.checkExists().forPath(PATH));

            server.stop(); // cause the next delete to fail
            server = null;
            try
            {
                client.delete().guaranteed().forPath(PATH);
                Assert.fail();
            }
            catch ( KeeperException.ConnectionLossException e )
            {
                // expected
            }

            server = new TestingServer(serverPort, serverDir);

            final int       TRIES = 5;
            for ( int i = 0; i < TRIES; ++i )
            {
                if ( client.checkExists().forPath(PATH) != null )
                {
                    timing.sleepABit();
                }
            }
            Assert.assertNull(client.checkExists().forPath(PATH));
        }
        finally
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public class TestFramework extends BaseClassForTests
{
    @Test
    public void     testConnectionState() throws Exception
    {
        Timing                  timing = new Timing();
        CuratorFramework        client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        try
        {
            final BlockingQueue<ConnectionState>        queue = new LinkedBlockingQueue<ConnectionState>();
            ConnectionStateListener                     listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    queue.add(newState);
                }
            };
            client.getConnectionStateListenable().addListener(listener);

            client.start();
            Assert.assertEquals(queue.poll(timing.multiple(4).seconds(), TimeUnit.SECONDS), ConnectionState.CONNECTED);
            server.stop();
            Assert.assertEquals(queue.poll(timing.multiple(4).seconds(), TimeUnit.SECONDS), ConnectionState.SUSPENDED);
            Assert.assertEquals(queue.poll(timing.multiple(4).seconds(), TimeUnit.SECONDS), ConnectionState.LOST);
        }
        finally
        {
            CloseableUtils.closeQuietly(client);
        }
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    }

    @Test
    public void     testCreateACLWithReset() throws Exception
    {
        Timing timing = new Timing();
        CuratorFrameworkFactory.Builder builder = CuratorFrameworkFactory.builder();
        CuratorFramework client = builder
            .connectString(server.getConnectString())
            .sessionTimeoutMs(timing.session())
            .connectionTimeoutMs(timing.connection())
            .authorization("digest", "me:pass".getBytes())
            .retryPolicy(new RetryOneTime(1))
            .build();
        client.start();
        try
        {
            final CountDownLatch lostLatch = new CountDownLatch(1);
            ConnectionStateListener listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    if ( newState == ConnectionState.LOST )
                    {
                        lostLatch.countDown();
                    }
                }
            };
            client.getConnectionStateListenable().addListener(listener);

            ACL acl = new ACL(ZooDefs.Perms.WRITE, ZooDefs.Ids.AUTH_IDS);
            List<ACL> aclList = Lists.newArrayList(acl);
            client.create().withACL(aclList).forPath("/test", "test".getBytes());

            server.stop();
            Assert.assertTrue(timing.awaitLatch(lostLatch));
            try
            {
                client.checkExists().forPath("/");
                Assert.fail("Connection should be down");
            }
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public class TestFailedDeleteManager extends BaseClassForTests
{
    @Test
    public void     testLostSession() throws Exception
    {
        Timing                  timing = new Timing();
        CuratorFramework        client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new ExponentialBackoffRetry(100, 3));
        try
        {
            client.start();

            client.create().forPath("/test-me");

            final CountDownLatch            latch = new CountDownLatch(1);
            final Semaphore                 semaphore = new Semaphore(0);
            ConnectionStateListener         listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) )
                    {
                        semaphore.release();
                    }
                    else if ( newState == ConnectionState.RECONNECTED )
                    {
                        latch.countDown();
                    }
                }
            };
            client.getConnectionStateListenable().addListener(listener);
            server.stop();

            Assert.assertTrue(timing.acquireSemaphore(semaphore));
            try
            {
                client.delete().guaranteed().forPath("/test-me");
                Assert.fail();
            }
            catch ( KeeperException.ConnectionLossException e )
            {
                // expected
            }
            Assert.assertTrue(timing.acquireSemaphore(semaphore));

            timing.sleepABit();

            server = new TestingServer(server.getPort(), server.getTempDirectory());
            Assert.assertTrue(timing.awaitLatch(latch));

            timing.sleepABit();

            Assert.assertNull(client.checkExists().forPath("/test-me"));
        }
        finally
        {
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    }

    @Test
    public void     testWithNamespaceAndLostSession() throws Exception
    {
        Timing                  timing = new Timing();
        CuratorFramework        client = CuratorFrameworkFactory.builder().connectString(server.getConnectString())
            .sessionTimeoutMs(timing.session())
            .connectionTimeoutMs(timing.connection())
            .retryPolicy(new ExponentialBackoffRetry(100, 3))
            .namespace("aisa")
            .build();
        try
        {
            client.start();

            client.create().forPath("/test-me");

            final CountDownLatch            latch = new CountDownLatch(1);
            final Semaphore                 semaphore = new Semaphore(0);
            ConnectionStateListener         listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) )
                    {
                        semaphore.release();
                    }
                    else if ( newState == ConnectionState.RECONNECTED )
                    {
                        latch.countDown();
                    }
                }
            };
            client.getConnectionStateListenable().addListener(listener);
            server.stop();

            Assert.assertTrue(timing.acquireSemaphore(semaphore));
            try
            {
                client.delete().guaranteed().forPath("/test-me");
                Assert.fail();
            }
            catch ( KeeperException.ConnectionLossException e )
            {
                // expected
            }
            Assert.assertTrue(timing.acquireSemaphore(semaphore));

            timing.sleepABit();

            server = new TestingServer(server.getPort(), server.getTempDirectory());
            Assert.assertTrue(timing.awaitLatch(latch));

            timing.sleepABit();

            Assert.assertNull(client.checkExists().forPath("/test-me"));
        }
        finally
        {
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    {
        final int PARTICIPANT_QTY = 1;//0;

        List<LeaderLatch> latches = Lists.newArrayList();

        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        try
        {
            client.start();

            for ( int i = 0; i < PARTICIPANT_QTY; ++i )
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    private static final String PATH_NAME = "/one/two/me";

    @Test
    public void testInterruptLeadershipWithRequeue() throws Exception
    {
        Timing timing = new Timing();
        LeaderSelector selector = null;
        CuratorFramework client = null;
        try
        {
            client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
            client.start();

            final Semaphore semaphore = new Semaphore(0);
            LeaderSelectorListener listener = new LeaderSelectorListenerAdapter()
            {
                @Override
                public void takeLeadership(CuratorFramework client) throws Exception
                {
                    semaphore.release();
                    Thread.currentThread().join();
                }
            };
            selector = new LeaderSelector(client, "/leader", listener);
            selector.autoRequeue();
            selector.start();

            Assert.assertTrue(timing.acquireSemaphore(semaphore));
            selector.interruptLeadership();

            Assert.assertTrue(timing.acquireSemaphore(semaphore));
        }
        finally
        {
            CloseableUtils.closeQuietly(selector);
            CloseableUtils.closeQuietly(client);
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