Package org.apache.curator.test

Examples of org.apache.curator.test.Timing

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    }

    @Test
    public void testConnectionStateNewClient() throws Exception
    {
        Timing timing = new Timing();
        TestingCluster cluster = new TestingCluster(3);
        CuratorFramework client = null;
        try
        {
            cluster.start();

            client = CuratorFrameworkFactory.newClient(cluster.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(100));
            client.start();
            client.checkExists().forPath("/");
            client.close();
            client = null;

            Iterator<InstanceSpec> iterator = cluster.getInstances().iterator();
            for ( int i = 0; i < 2; ++i )
            {
                cluster.killServer(iterator.next());
            }

            client = CuratorFrameworkFactory.builder()
                .connectString(cluster.getConnectString())
                .sessionTimeoutMs(timing.session())
                .connectionTimeoutMs(timing.connection())
                .retryPolicy(new RetryNTimes(3, timing.milliseconds()))
                .canBeReadOnly(true)
                .build();

            final BlockingQueue<ConnectionState> states = Queues.newLinkedBlockingQueue();
            client.getConnectionStateListenable().addListener
            (
                new ConnectionStateListener()
                {
                    @Override
                    public void stateChanged(CuratorFramework client, ConnectionState newState)
                    {
                        states.add(newState);
                    }
                }
            );
            client.start();

            client.checkExists().forPath("/");

            ConnectionState state = states.poll(timing.forWaiting().milliseconds(), TimeUnit.MILLISECONDS);
            Assert.assertEquals(state, ConnectionState.READ_ONLY);
        }
        finally
        {
            CloseableUtils.closeQuietly(client);
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    }

    @Test
    public void testReadOnly() throws Exception
    {
        Timing timing = new Timing();

        CuratorFramework client = null;
        TestingCluster cluster = new TestingCluster(2);
        try
        {
            cluster.start();

            client = CuratorFrameworkFactory.builder().connectString(cluster.getConnectString()).canBeReadOnly(true).connectionTimeoutMs(timing.connection()).sessionTimeoutMs(timing.session()).retryPolicy(new ExponentialBackoffRetry(100, 3)).build();
            client.start();

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

            final CountDownLatch readOnlyLatch = new CountDownLatch(1);
            final CountDownLatch reconnectedLatch = new CountDownLatch(1);
            ConnectionStateListener listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    if ( newState == ConnectionState.READ_ONLY )
                    {
                        readOnlyLatch.countDown();
                    }
                    else if ( newState == ConnectionState.RECONNECTED )
                    {
                        reconnectedLatch.countDown();
                    }
                }
            };
            client.getConnectionStateListenable().addListener(listener);

            InstanceSpec ourInstance = cluster.findConnectionInstance(client.getZookeeperClient().getZooKeeper());
            Iterator<InstanceSpec> iterator = cluster.getInstances().iterator();
            InstanceSpec killInstance = iterator.next();
            if ( killInstance.equals(ourInstance) )
            {
                killInstance = iterator.next(); // kill the instance we're not connected to
            }
            cluster.killServer(killInstance);

            Assert.assertEquals(reconnectedLatch.getCount(), 1);
            Assert.assertTrue(timing.awaitLatch(readOnlyLatch));

            Assert.assertEquals(reconnectedLatch.getCount(), 1);
            cluster.restartServer(killInstance);
            Assert.assertTrue(timing.awaitLatch(reconnectedLatch));
        }
        finally
        {
            CloseableUtils.closeQuietly(client);
            CloseableUtils.closeQuietly(cluster);
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    // test Issue 27 using new rebuild() method
    @Test
    public void testIssue27Alt() throws Exception
    {
        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/base");
            client.create().forPath("/base/a");
            client.create().forPath("/base/b");
            client.create().forPath("/base/c");

            client.getChildren().forPath("/base");

            final List<PathChildrenCacheEvent.Type> events = Lists.newArrayList();
            final Semaphore semaphore = new Semaphore(0);
            PathChildrenCache cache = new PathChildrenCache(client, "/base", true);
            cache.getListenable().addListener
                (
                    new PathChildrenCacheListener()
                    {
                        @Override
                        public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception
                        {
                            events.add(event.getType());
                            semaphore.release();
                        }
                    }
                );
            cache.start(PathChildrenCache.StartMode.BUILD_INITIAL_CACHE);

            client.delete().forPath("/base/a");
            Assert.assertTrue(timing.acquireSemaphore(semaphore, 1));

            client.create().forPath("/base/a");
            Assert.assertTrue(timing.acquireSemaphore(semaphore, 1));

            List<PathChildrenCacheEvent.Type> expected = Lists.newArrayList
                (
                    PathChildrenCacheEvent.Type.CHILD_REMOVED,
                    PathChildrenCacheEvent.Type.CHILD_ADDED
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    }

    @Test
    public void testKilledSession() throws Exception
    {
        Timing timing = new Timing();
        CuratorFramework client = null;
        try
        {
            client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
            client.start();
            client.create().forPath("/test");

            PathChildrenCache cache = new PathChildrenCache(client, "/test", true);
            cache.start();

            final CountDownLatch childAddedLatch = new CountDownLatch(1);
            final CountDownLatch lostLatch = new CountDownLatch(1);
            final CountDownLatch reconnectedLatch = new CountDownLatch(1);
            final CountDownLatch removedLatch = new CountDownLatch(1);
            cache.getListenable().addListener
                (
                    new PathChildrenCacheListener()
                    {
                        @Override
                        public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception
                        {
                            if ( event.getType() == PathChildrenCacheEvent.Type.CHILD_ADDED )
                            {
                                childAddedLatch.countDown();
                            }
                            else if ( event.getType() == PathChildrenCacheEvent.Type.CONNECTION_LOST )
                            {
                                lostLatch.countDown();
                            }
                            else if ( event.getType() == PathChildrenCacheEvent.Type.CONNECTION_RECONNECTED )
                            {
                                reconnectedLatch.countDown();
                            }
                            else if ( event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED )
                            {
                                removedLatch.countDown();
                            }
                        }
                    }
                );

            client.create().withMode(CreateMode.EPHEMERAL).forPath("/test/me", "data".getBytes());
            Assert.assertTrue(timing.awaitLatch(childAddedLatch));

            KillSession.kill(client.getZookeeperClient().getZooKeeper(), server.getConnectString());
            Assert.assertTrue(timing.awaitLatch(lostLatch));
            Assert.assertTrue(timing.awaitLatch(reconnectedLatch));
            Assert.assertTrue(timing.awaitLatch(removedLatch));
        }
        finally
        {
            CloseableUtils.closeQuietly(client);
        }
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    }

    @Test
    public void testModes() throws Exception
    {
        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/test");
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    }

    @Test
    public void testRebuildNode() throws Exception
    {
        Timing timing = new Timing();
        PathChildrenCache cache = null;
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().creatingParentsIfNeeded().forPath("/test/one", "one".getBytes());
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    }

    @Test
    public void testBasics() throws Exception
    {
        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/test");

            final BlockingQueue<PathChildrenCacheEvent.Type> events = new LinkedBlockingQueue<PathChildrenCacheEvent.Type>();
            PathChildrenCache cache = new PathChildrenCache(client, "/test", true);
            cache.getListenable().addListener
                (
                    new PathChildrenCacheListener()
                    {
                        @Override
                        public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception
                        {
                            if ( event.getData().getPath().equals("/test/one") )
                            {
                                events.offer(event.getType());
                            }
                        }
                    }
                );
            cache.start();

            client.create().forPath("/test/one", "hey there".getBytes());
            Assert.assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_ADDED);

            client.setData().forPath("/test/one", "sup!".getBytes());
            Assert.assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_UPDATED);
            Assert.assertEquals(new String(cache.getCurrentData("/test/one").getData()), "sup!");

            client.delete().forPath("/test/one");
            Assert.assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_REMOVED);

            cache.close();
        }
        finally
        {
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    }

    @Test
    public void testBasicsOnTwoCachesWithSameExecutor() throws Exception
    {
        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/test");

            final BlockingQueue<PathChildrenCacheEvent.Type> events = new LinkedBlockingQueue<PathChildrenCacheEvent.Type>();
            final ExecutorService exec = Executors.newSingleThreadExecutor();
            PathChildrenCache cache = new PathChildrenCache(client, "/test", true, false, exec);
            cache.getListenable().addListener
                (
                    new PathChildrenCacheListener()
                    {
                        @Override
                        public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception
                        {
                            if ( event.getData().getPath().equals("/test/one") )
                            {
                                events.offer(event.getType());
                            }
                        }
                    }
                );
            cache.start();

            final BlockingQueue<PathChildrenCacheEvent.Type> events2 = new LinkedBlockingQueue<PathChildrenCacheEvent.Type>();
            PathChildrenCache cache2 = new PathChildrenCache(client, "/test", true, false, exec);
            cache2.getListenable().addListener(
                    new PathChildrenCacheListener() {
                        @Override
                        public void childEvent(CuratorFramework client, PathChildrenCacheEvent event)
                                throws Exception
                        {
                            if ( event.getData().getPath().equals("/test/one") )
                            {
                                events2.offer(event.getType());
                            }
                        }
                    }
            );
            cache2.start();

            client.create().forPath("/test/one", "hey there".getBytes());
            Assert.assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_ADDED);
            Assert.assertEquals(events2.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_ADDED);

            client.setData().forPath("/test/one", "sup!".getBytes());
            Assert.assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_UPDATED);
            Assert.assertEquals(events2.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_UPDATED);
            Assert.assertEquals(new String(cache.getCurrentData("/test/one").getData()), "sup!");
            Assert.assertEquals(new String(cache2.getCurrentData("/test/one").getData()), "sup!");

            client.delete().forPath("/test/one");
            Assert.assertEquals(events.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_REMOVED);
            Assert.assertEquals(events2.poll(timing.forWaiting().seconds(), TimeUnit.SECONDS), PathChildrenCacheEvent.Type.CHILD_REMOVED);

            cache.close();
            cache2.close();
        }
        finally
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    @Test
    public void testDeleteNodeAfterCloseDoesntCallExecutor()
            throws Exception
    {
        Timing timing = new Timing();
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/test");

            final ExecuteCalledWatchingExecutorService exec = new ExecuteCalledWatchingExecutorService(Executors.newSingleThreadExecutor());
            PathChildrenCache cache = new PathChildrenCache(client, "/test", true, false, exec);

            cache.start();
            client.create().forPath("/test/one", "hey there".getBytes());

            cache.rebuild();
            Assert.assertEquals(new String(cache.getCurrentData("/test/one").getData()), "hey there");
            Assert.assertTrue(exec.isExecuteCalled());

            exec.setExecuteCalled(false);
            cache.close();
            Assert.assertFalse(exec.isExecuteCalled());

            client.delete().forPath("/test/one");
            timing.sleepABit();
            Assert.assertFalse(exec.isExecuteCalled());
        }
        finally {
            client.close();
        }
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    @Test
    public void testListenerConnectedAtStart() throws Exception
    {
        server.close();

        Timing timing = new Timing(2);
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryNTimes(0, 0));
        try
        {
            client.start();

            final CountDownLatch connectedLatch = new CountDownLatch(1);
            final AtomicBoolean firstListenerAction = new AtomicBoolean(true);
            final AtomicReference<ConnectionState> firstListenerState = new AtomicReference<ConnectionState>();
            ConnectionStateListener listener = new ConnectionStateListener()
            {
                @Override
                public void stateChanged(CuratorFramework client, ConnectionState newState)
                {
                    if ( firstListenerAction.compareAndSet(true, false) )
                    {
                        firstListenerState.set(newState);
                        System.out.println("First listener state is " + newState);
                    }
                    if ( newState == ConnectionState.CONNECTED )
                    {
                        connectedLatch.countDown();
                    }
                }
            };
            client.getConnectionStateListenable().addListener(listener);

            // due to CURATOR-72, this was causing a LOST event to precede the CONNECTED event
            client.create().inBackground().forPath("/foo");

            server = new TestingServer(server.getPort());

            Assert.assertTrue(timing.awaitLatch(connectedLatch));
            Assert.assertFalse(firstListenerAction.get());
            ConnectionState firstconnectionState = firstListenerState.get();
            Assert.assertEquals(firstconnectionState, ConnectionState.CONNECTED, "First listener state MUST BE CONNECTED but is " + firstconnectionState);
        }
        finally
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