Examples with BackgroundCallback org.apache.curator.framework.api.BackgroundCallback used on opensource projects

Example 31 with BackgroundCallback

use of org.apache.curator.framework.api.BackgroundCallback in project xian by happyyangyuan.

the class TestFramework method testSyncNew.

@Test
public void testSyncNew() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    client.start();
    try {
        client.create().forPath("/head");
        Assert.assertNotNull(client.checkExists().forPath("/head"));
        final CountDownLatch latch = new CountDownLatch(1);
        BackgroundCallback callback = new BackgroundCallback() {

            @Override
            public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
                if (event.getType() == CuratorEventType.SYNC) {
                    latch.countDown();
                }
            }
        };
        client.sync().inBackground(callback).forPath("/head");
        Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
    } finally {
        CloseableUtils.closeQuietly(client);
    }
}

Example 32 with BackgroundCallback

use of org.apache.curator.framework.api.BackgroundCallback in project xian by happyyangyuan.

the class TestFrameworkEdges method connectionLossWithBackgroundTest.

@Test
public void connectionLossWithBackgroundTest() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), 1, new RetryOneTime(1));
    try {
        final CountDownLatch latch = new CountDownLatch(1);
        client.start();
        client.getZookeeperClient().blockUntilConnectedOrTimedOut();
        server.close();
        client.getChildren().inBackground(new BackgroundCallback() {

            public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
                latch.countDown();
            }
        }).forPath("/");
        Assert.assertTrue(timing.awaitLatch(latch));
    } finally {
        CloseableUtils.closeQuietly(client);
    }
}

Example 33 with BackgroundCallback

use of org.apache.curator.framework.api.BackgroundCallback in project xian by happyyangyuan.

the class TestFailedDeleteManager method testGuaranteedDeleteOnNonExistentNodeInBackground.

@Test
public void testGuaranteedDeleteOnNonExistentNodeInBackground() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    client.start();
    final AtomicBoolean pathAdded = new AtomicBoolean(false);
    ((CuratorFrameworkImpl) client).getFailedDeleteManager().debugListener = new FailedDeleteManagerListener() {

        @Override
        public void pathAddedForDelete(String path) {
            pathAdded.set(true);
        }
    };
    final CountDownLatch backgroundLatch = new CountDownLatch(1);
    BackgroundCallback background = new BackgroundCallback() {

        @Override
        public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
            backgroundLatch.countDown();
        }
    };
    try {
        client.delete().guaranteed().inBackground(background).forPath("/nonexistent");
        backgroundLatch.await();
        // Exception is expected, the delete should not be retried
        Assert.assertFalse(pathAdded.get());
    } finally {
        client.close();
    }
}

Example 34 with BackgroundCallback

use of org.apache.curator.framework.api.BackgroundCallback in project xian by happyyangyuan.

the class DistributedQueue method doPutInBackground.

private void doPutInBackground(final T item, String path, final MultiItem<T> givenMultiItem, byte[] bytes) throws Exception {
    BackgroundCallback callback = new BackgroundCallback() {

        @Override
        public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
            if (event.getResultCode() != KeeperException.Code.OK.intValue()) {
                return;
            }
            if (event.getType() == CuratorEventType.CREATE) {
                synchronized (putCount) {
                    putCount.decrementAndGet();
                    putCount.notifyAll();
                }
            }
            putListenerContainer.forEach(new Function<QueuePutListener<T>, Void>() {

                @Override
                public Void apply(QueuePutListener<T> listener) {
                    if (item != null) {
                        listener.putCompleted(item);
                    } else {
                        listener.putMultiCompleted(givenMultiItem);
                    }
                    return null;
                }
            });
        }
    };
    internalCreateNode(path, bytes, callback);
}

Example 35 with BackgroundCallback

use of org.apache.curator.framework.api.BackgroundCallback in project xian by happyyangyuan.

the class LeaderLatch method getChildren.

private void getChildren() throws Exception {
    BackgroundCallback callback = new BackgroundCallback() {

        @Override
        public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
            if (event.getResultCode() == KeeperException.Code.OK.intValue()) {
                checkLeadership(event.getChildren());
            }
        }
    };
    client.getChildren().inBackground(callback).forPath(ZKPaths.makePath(latchPath, null));
}