Example usage for org.apache.zookeeper Watcher Watcher

Introduction

In this page you can find the example usage for org.apache.zookeeper Watcher Watcher.

Prototype

Watcher

Source Link

Usage

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testSameWatcherDifferentPaths1Triggered() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {//from  www  .  j  a v  a2  s. c  o  m
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        final CountDownLatch latch = new CountDownLatch(1);
        Watcher watcher = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                latch.countDown();
            }
        };
        removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c");
        removerClient.checkExists().usingWatcher(watcher).forPath("/d/e/f");
        removerClient.create().creatingParentsIfNeeded().forPath("/d/e/f");

        Timing timing = new Timing();
        Assert.assertTrue(timing.awaitLatch(latch));
        timing.sleepABit();

        removerClient.removeWatchers();
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testSameWatcherDifferentPaths() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {/*ww w  .j  a  va2 s.  co  m*/
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        Watcher watcher = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                // NOP
            }
        };
        removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c");
        removerClient.checkExists().usingWatcher(watcher).forPath("/d/e/f");
        Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 2);
        removerClient.removeWatchers();
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testSameWatcherDifferentKinds1Triggered() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {//from  www.  java2  s  .  com
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        final CountDownLatch latch = new CountDownLatch(1);
        Watcher watcher = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                latch.countDown();
            }
        };

        removerClient.create().creatingParentsIfNeeded().forPath("/a/b/c");
        removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c");
        removerClient.getData().usingWatcher(watcher).forPath("/a/b/c");
        removerClient.setData().forPath("/a/b/c", "new".getBytes());

        Timing timing = new Timing();
        Assert.assertTrue(timing.awaitLatch(latch));
        timing.sleepABit();

        removerClient.removeWatchers();
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testSameWatcherDifferentKinds() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {//  ww w.j  a va 2s .  c  o  m
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        Watcher watcher = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                // NOP
            }
        };

        removerClient.create().creatingParentsIfNeeded().forPath("/a/b/c");
        removerClient.checkExists().usingWatcher(watcher).forPath("/a/b/c");
        removerClient.getData().usingWatcher(watcher).forPath("/a/b/c");
        removerClient.removeWatchers();
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testWithRetry() throws Exception {
    server.stop();//from   w w w. j a va2s  .  c  om
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        Watcher w = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                // NOP
            }
        };
        try {
            removerClient.checkExists().usingWatcher(w).forPath("/one/two/three");
            Assert.fail("Should have thrown ConnectionLossException");
        } catch (KeeperException.ConnectionLossException expected) {
            // expected
        }
        Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 0);
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testWithRetryInBackground() throws Exception {
    server.stop();/*from  w ww  .  ja  v  a2  s. c o m*/
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        Watcher w = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                // NOP
            }
        };

        final CountDownLatch latch = new CountDownLatch(1);
        BackgroundCallback callback = new BackgroundCallback() {
            @Override
            public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
                latch.countDown();
            }
        };
        removerClient.checkExists().usingWatcher(w).inBackground(callback).forPath("/one/two/three");
        Assert.assertTrue(new Timing().awaitLatch(latch));
        Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 0);
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testMissingNode() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {//from  ww  w  .  j av  a 2s .c o m
        client.start();
        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();
        Watcher w = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                // NOP
            }
        };
        try {
            removerClient.getData().usingWatcher(w).forPath("/one/two/three");
            Assert.fail("Should have thrown NoNodeException");
        } catch (KeeperException.NoNodeException expected) {
            // expected
        }
        removerClient.removeWatchers();
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testMissingNodeInBackground() throws Exception {
    final CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(),
            new RetryOneTime(1));
    Callable<Void> proc = new Callable<Void>() {
        @Override//from  www.  ja  v a 2s  .c o  m
        public Void call() throws Exception {
            client.start();
            WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client
                    .newWatcherRemoveCuratorFramework();
            Watcher w = new Watcher() {
                @Override
                public void process(WatchedEvent event) {
                    // NOP
                }
            };
            final CountDownLatch latch = new CountDownLatch(1);
            BackgroundCallback callback = new BackgroundCallback() {
                @Override
                public void processResult(CuratorFramework client, CuratorEvent event) throws Exception {
                    latch.countDown();
                }
            };
            removerClient.getData().usingWatcher(w).inBackground(callback).forPath("/one/two/three");
            Assert.assertTrue(new Timing().awaitLatch(latch));
            Assert.assertEquals(removerClient.getWatcherRemovalManager().getEntries().size(), 0);
            removerClient.removeWatchers();
            return null;
        }
    };
    TestCleanState.test(client, proc);
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testSameWatcher() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {/*from   w  w  w .j  a v  a 2  s .  com*/
        client.start();
        client.create().forPath("/test");

        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();

        Watcher watcher = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                // NOP
            }
        };

        removerClient.getData().usingWatcher(watcher).forPath("/test");
        Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1);
        removerClient.getData().usingWatcher(watcher).forPath("/test");
        Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1);
        removerClient.removeWatchers();
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}

From source file:org.apache.curator.framework.imps.TestWatcherRemovalManager.java

License:Apache License

@Test
public void testTriggered() throws Exception {
    CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
    try {//from  w w  w  .  j  a  v a 2 s .  c o  m
        client.start();

        WatcherRemovalFacade removerClient = (WatcherRemovalFacade) client.newWatcherRemoveCuratorFramework();

        final CountDownLatch latch = new CountDownLatch(1);
        Watcher watcher = new Watcher() {
            @Override
            public void process(WatchedEvent event) {
                if (event.getType() == Event.EventType.NodeCreated) {
                    latch.countDown();
                }
            }
        };

        removerClient.checkExists().usingWatcher(watcher).forPath("/yo");
        Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 1);
        removerClient.create().forPath("/yo");

        Assert.assertTrue(new Timing().awaitLatch(latch));

        Assert.assertEquals(removerClient.getRemovalManager().getEntries().size(), 0);
    } finally {
        TestCleanState.closeAndTestClean(client);
    }
}