Examples with Stat org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat used on opensource projects

Example 26 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project weave by continuuity.

the class AbstractZKServiceController method actOnExists.

private void actOnExists(final String path, final Runnable action) {
    // Watch for node existence.
    final AtomicBoolean nodeExists = new AtomicBoolean(false);
    Futures.addCallback(zkClient.exists(path, new Watcher() {

        @Override
        public void process(WatchedEvent event) {
            // Other event type would be handled by the action.
            if (event.getType() == Event.EventType.NodeCreated && nodeExists.compareAndSet(false, true)) {
                action.run();
            }
        }
    }), new FutureCallback<Stat>() {

        @Override
        public void onSuccess(Stat result) {
            if (result != null && nodeExists.compareAndSet(false, true)) {
                action.run();
            }
        }

        @Override
        public void onFailure(Throwable t) {
            LOG.error("Failed in exists call to {}. Shutting down service.", path, t);
            forceShutDown();
        }
    }, Threads.SAME_THREAD_EXECUTOR);
}

Example 27 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project hadoop by apache.

the class TestChildReaper method testNamespace.

@Test
public void testNamespace() throws Exception {
    Timing timing = new Timing();
    ChildReaper reaper = null;
    CuratorFramework client = CuratorFrameworkFactory.builder().connectString(server.getConnectString()).sessionTimeoutMs(timing.session()).connectionTimeoutMs(timing.connection()).retryPolicy(new RetryOneTime(1)).namespace("foo").build();
    try {
        client.start();
        for (int i = 0; i < 10; ++i) {
            client.create().creatingParentsIfNeeded().forPath("/test/" + Integer.toString(i));
        }
        reaper = new ChildReaper(client, "/test", Reaper.Mode.REAP_UNTIL_DELETE, 1);
        reaper.start();
        timing.forWaiting().sleepABit();
        Stat stat = client.checkExists().forPath("/test");
        Assert.assertEquals(stat.getNumChildren(), 0);
        stat = client.usingNamespace(null).checkExists().forPath("/foo/test");
        Assert.assertNotNull(stat);
        Assert.assertEquals(stat.getNumChildren(), 0);
    } finally {
        CloseableUtils.closeQuietly(reaper);
        CloseableUtils.closeQuietly(client);
    }
}

Example 28 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project hadoop by apache.

the class TestChildReaper method testMultiPath.

@Test
public void testMultiPath() throws Exception {
    Timing timing = new Timing();
    ChildReaper reaper = null;
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
    try {
        client.start();
        for (int i = 0; i < 10; ++i) {
            client.create().creatingParentsIfNeeded().forPath("/test1/" + Integer.toString(i));
            client.create().creatingParentsIfNeeded().forPath("/test2/" + Integer.toString(i));
            client.create().creatingParentsIfNeeded().forPath("/test3/" + Integer.toString(i));
        }
        reaper = new ChildReaper(client, "/test2", Reaper.Mode.REAP_UNTIL_DELETE, 1);
        reaper.start();
        reaper.addPath("/test1");
        timing.forWaiting().sleepABit();
        Stat stat = client.checkExists().forPath("/test1");
        Assert.assertEquals(stat.getNumChildren(), 0);
        stat = client.checkExists().forPath("/test2");
        Assert.assertEquals(stat.getNumChildren(), 0);
        stat = client.checkExists().forPath("/test3");
        Assert.assertEquals(stat.getNumChildren(), 10);
    } finally {
        CloseableUtils.closeQuietly(reaper);
        CloseableUtils.closeQuietly(client);
    }
}

Example 29 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project hadoop by apache.

the class TestChildReaper method testSomeNodes.

@Test
public void testSomeNodes() throws Exception {
    Timing timing = new Timing();
    ChildReaper reaper = null;
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
    try {
        client.start();
        Random r = new Random();
        int nonEmptyNodes = 0;
        for (int i = 0; i < 10; ++i) {
            client.create().creatingParentsIfNeeded().forPath("/test/" + Integer.toString(i));
            if (r.nextBoolean()) {
                client.create().forPath("/test/" + Integer.toString(i) + "/foo");
                ++nonEmptyNodes;
            }
        }
        reaper = new ChildReaper(client, "/test", Reaper.Mode.REAP_UNTIL_DELETE, 1);
        reaper.start();
        timing.forWaiting().sleepABit();
        Stat stat = client.checkExists().forPath("/test");
        Assert.assertEquals(stat.getNumChildren(), nonEmptyNodes);
    } finally {
        CloseableUtils.closeQuietly(reaper);
        CloseableUtils.closeQuietly(client);
    }
}

Example 30 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project hadoop by apache.

the class TestChildReaper method testSimple.

@Test
public void testSimple() throws Exception {
    Timing timing = new Timing();
    ChildReaper reaper = null;
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), timing.session(), timing.connection(), new RetryOneTime(1));
    try {
        client.start();
        for (int i = 0; i < 10; ++i) {
            client.create().creatingParentsIfNeeded().forPath("/test/" + Integer.toString(i));
        }
        reaper = new ChildReaper(client, "/test", Reaper.Mode.REAP_UNTIL_DELETE, 1);
        reaper.start();
        timing.forWaiting().sleepABit();
        Stat stat = client.checkExists().forPath("/test");
        Assert.assertEquals(stat.getNumChildren(), 0);
    } finally {
        CloseableUtils.closeQuietly(reaper);
        CloseableUtils.closeQuietly(client);
    }
}