Package org.apache.curator.framework

Examples of org.apache.curator.framework.CuratorFramework

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    @Test
    public void     testCreateParents() 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", "foo".getBytes());
            byte[]      data = client.getData().forPath("/one/two/three");
            Assert.assertEquals(data, "foo".getBytes());

            client.create().creatingParentsIfNeeded().forPath("/one/two/another", "bar".getBytes());
            data = client.getData().forPath("/one/two/another");
            Assert.assertEquals(data, "bar".getBytes());
        }
        finally
        {
            client.close();
        }
    }
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    public void     testEnsurePathWithNamespace() throws Exception
    {
        final String namespace = "jz";

        CuratorFrameworkFactory.Builder      builder = CuratorFrameworkFactory.builder();
        CuratorFramework client = builder.connectString(server.getConnectString()).retryPolicy(new RetryOneTime(1)).namespace(namespace).build();
        client.start();
        try
        {
            EnsurePath ensurePath = new EnsurePath("/pity/the/fool");
            ensurePath.ensure(client.getZookeeperClient());
            Assert.assertNull(client.getZookeeperClient().getZooKeeper().exists("/jz/pity/the/fool", false));

            ensurePath = client.newNamespaceAwareEnsurePath("/pity/the/fool");
            ensurePath.ensure(client.getZookeeperClient());
            Assert.assertNotNull(client.getZookeeperClient().getZooKeeper().exists("/jz/pity/the/fool", false));
        }
        finally
        {
            client.close();
        }
    }
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    public void     testNamespace() throws Exception
    {
        final String namespace = "TestNamespace";
       
        CuratorFrameworkFactory.Builder      builder = CuratorFrameworkFactory.builder();
        CuratorFramework client = builder.connectString(server.getConnectString()).retryPolicy(new RetryOneTime(1)).namespace(namespace).build();
        client.start();
        try
        {
            String      actualPath = client.create().forPath("/test");
            Assert.assertEquals(actualPath, "/test");
            Assert.assertNotNull(client.getZookeeperClient().getZooKeeper().exists("/" + namespace + "/test", false));
            Assert.assertNull(client.getZookeeperClient().getZooKeeper().exists("/test", false));

            actualPath = client.usingNamespace(null).create().forPath("/non");
            Assert.assertEquals(actualPath, "/non");
            Assert.assertNotNull(client.getZookeeperClient().getZooKeeper().exists("/non", false));

            client.create().forPath("/test/child", "hey".getBytes());
            byte[]      bytes = client.getData().forPath("/test/child");
            Assert.assertEquals(bytes, "hey".getBytes());

            bytes = client.usingNamespace(null).getData().forPath("/" + namespace + "/test/child");
            Assert.assertEquals(bytes, "hey".getBytes());
        }
        finally
        {
            client.close();
        }
    }
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    }

    @Test
    public void     testCustomCallback() throws Exception
    {
        CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1));
        client.start();
        try
        {
            final CountDownLatch    latch = new CountDownLatch(1);
            BackgroundCallback      callback = new BackgroundCallback()
            {
                @Override
                public void processResult(CuratorFramework client, CuratorEvent event) throws Exception
                {
                    if ( event.getType() == CuratorEventType.CREATE )
                    {
                        if ( event.getPath().equals("/head") )
                        {
                            latch.countDown();
                        }
                    }
                }
            };
            client.create().inBackground(callback).forPath("/head");
            Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
        }
        finally
        {
            client.close();
        }
    }
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    }

    @Test
    public void     testSync() 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.SYNC )
                        {
                            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.sync("/head", latch);
            Assert.assertTrue(latch.await(10, TimeUnit.SECONDS));
        }
        finally
        {
            client.close();
        }
    }
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    }

    @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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    }

    @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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    }

    @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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    }

    @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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    @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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