Examples of CuratorFramework

com.netflix.curator.framework.CuratorFramework
org.apache.curator.framework.CuratorFramework
Zookeeper framework-style client

Examples of org.apache.curator.framework.CuratorFramework

    }


    @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
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    }


    @Test
    public void     testBackgroundDelete() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            client.getCuratorListenable().addListener
            (
                new CuratorListener()
                {
                    @Override
                    public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception
                    {
                        if ( event.getType() == CuratorEventType.DELETE )
                        {
                            Assert.assertEquals(event.getPath(), "/head");
                            ((CountDownLatch)event.getContext()).countDown();
                        }
                    }
                }
            );


            client.create().forPath("/head");
            Assert.assertNotNull(client.checkExists().forPath("/head"));


            CountDownLatch      latch = new CountDownLatch(1);
            client.delete().inBackground(latch).forPath("/head");
            Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
            Assert.assertNull(client.checkExists().forPath("/head"));
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    }


    @Test
    public void     testBackgroundDeleteWithChildren() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            client.getCuratorListenable().addListener
                    (
                            new CuratorListener()
                            {
                                @Override
                                public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception
                                {
                                    if ( event.getType() == CuratorEventType.DELETE )
                                    {
                                        Assert.assertEquals(event.getPath(), "/one/two");
                                        ((CountDownLatch)event.getContext()).countDown();
                                    }
                                }
                            }
                    );


            client.create().creatingParentsIfNeeded().forPath("/one/two/three/four");
            Assert.assertNotNull(client.checkExists().forPath("/one/two/three/four"));


            CountDownLatch      latch = new CountDownLatch(1);
            client.delete().deletingChildrenIfNeeded().inBackground(latch).forPath("/one/two");
            Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
            Assert.assertNull(client.checkExists().forPath("/one/two"));
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    }


    @Test
    public void     testDelete() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/head");
            Assert.assertNotNull(client.checkExists().forPath("/head"));
            client.delete().forPath("/head");
            Assert.assertNull(client.checkExists().forPath("/head"));
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework


    @Test
    public void testDeleteWithChildren() throws Exception
    {
        CuratorFrameworkFactory.Builder      builder = CuratorFrameworkFactory.builder();
        CuratorFramework client = builder.connectString(server.getConnectString()).retryPolicy(new RetryOneTime(1)).build();
        client.start();
        try
        {
            client.create().creatingParentsIfNeeded().forPath("/one/two/three/four/five/six", "foo".getBytes());
            client.delete().deletingChildrenIfNeeded().forPath("/one/two/three/four/five");
            Assert.assertNull(client.checkExists().forPath("/one/two/three/four/five"));
            client.delete().deletingChildrenIfNeeded().forPath("/one/two");
            Assert.assertNull(client.checkExists().forPath("/one/two"));
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework


    @Test
    public void testDeleteGuaranteedWithChildren() throws Exception
    {
        CuratorFrameworkFactory.Builder      builder = CuratorFrameworkFactory.builder();
        CuratorFramework client = builder.connectString(server.getConnectString()).retryPolicy(new RetryOneTime(1)).build();
        client.start();
        try
        {
            client.create().creatingParentsIfNeeded().forPath("/one/two/three/four/five/six", "foo".getBytes());
            client.delete().guaranteed().deletingChildrenIfNeeded().forPath("/one/two/three/four/five");
            Assert.assertNull(client.checkExists().forPath("/one/two/three/four/five"));
            client.delete().guaranteed().deletingChildrenIfNeeded().forPath("/one/two");
            Assert.assertNull(client.checkExists().forPath("/one/two"));
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    }


    @Test
    public void     testGetSequentialChildren() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            client.create().forPath("/head");


            for ( int i = 0; i < 10; ++i )
            {
                client.create().withMode(CreateMode.EPHEMERAL_SEQUENTIAL).forPath("/head/child");
            }


            List<String>        children = client.getChildren().forPath("/head");
            Assert.assertEquals(children.size(), 10);
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    public void     testBackgroundGetDataWithWatch() throws Exception
    {
        final byte[]        data1 = {1, 2, 3};
        final byte[]        data2 = {4, 5, 6, 7};


        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            final CountDownLatch          watchedLatch = new CountDownLatch(1);
            client.getCuratorListenable().addListener
            (
                new CuratorListener()
                {
                    @Override
                    public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception
                    {
                        if ( event.getType() == CuratorEventType.GET_DATA )
                        {
                            Assert.assertEquals(event.getPath(), "/test");
                            Assert.assertEquals(event.getData(), data1);
                            ((CountDownLatch)event.getContext()).countDown();
                        }
                        else if ( event.getType() == CuratorEventType.WATCHED )
                        {
                            if ( event.getWatchedEvent().getType() == Watcher.Event.EventType.NodeDataChanged )
                            {
                                Assert.assertEquals(event.getPath(), "/test");
                                watchedLatch.countDown();
                            }
                        }
                    }
                }
            );


            client.create().forPath("/test", data1);


            CountDownLatch      backgroundLatch = new CountDownLatch(1);
            client.getData().watched().inBackground(backgroundLatch).forPath("/test");
            Assert.assertTrue(backgroundLatch.await(10, TimeUnit.SECONDS));


            client.setData().forPath("/test", data2);
            Assert.assertTrue(watchedLatch.await(10, TimeUnit.SECONDS));
            byte[]      checkData = client.getData().forPath("/test");
            Assert.assertEquals(checkData, data2);
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    }


    @Test
    public void     testBackgroundCreate() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            client.getCuratorListenable().addListener
            (
                new CuratorListener()
                {
                    @Override
                    public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception
                    {
                        if ( event.getType() == CuratorEventType.CREATE )
                        {
                            Assert.assertEquals(event.getPath(), "/test");
                            ((CountDownLatch)event.getContext()).countDown();
                        }
                    }
                }
            );


            CountDownLatch     latch = new CountDownLatch(1);
            client.create().inBackground(latch).forPath("/test", new byte[]{1, 2, 3});
            Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
        }
        finally
        {
            client.close();
        }
    }

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Examples of org.apache.curator.framework.CuratorFramework

    }


    @Test
    public void     testCreateModes() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            byte[]  writtenBytes = {1, 2, 3};
            client.create().forPath("/test", writtenBytes); // should be persistent


            client.close();
            client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
            client.start();


            byte[]  readBytes = client.getData().forPath("/test");
            Assert.assertEquals(writtenBytes, readBytes);


            client.create().withMode(CreateMode.EPHEMERAL).forPath("/ghost", writtenBytes);


            client.close();
            client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
            client.start();


            readBytes = client.getData().forPath("/test");
            Assert.assertEquals(writtenBytes, readBytes);
            Stat    stat = client.checkExists().forPath("/ghost");
            Assert.assertNull(stat);


            String  realPath = client.create().withMode(CreateMode.PERSISTENT_SEQUENTIAL).forPath("/pseq", writtenBytes);
            Assert.assertNotSame(realPath, "/pseq");


            client.close();
            client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
            client.start();


            readBytes = client.getData().forPath(realPath);
            Assert.assertEquals(writtenBytes, readBytes);


            realPath = client.create().withMode(CreateMode.EPHEMERAL_SEQUENTIAL).forPath("/eseq", writtenBytes);
            Assert.assertNotSame(realPath, "/eseq");


            client.close();
            client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
            client.start();


            stat = client.checkExists().forPath(realPath);
            Assert.assertNull(stat);
        }
        finally
        {
            client.close();
        }
    }

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