Example usage for org.apache.zookeeper Watcher Watcher

List of usage examples for org.apache.zookeeper Watcher Watcher

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

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Usage

From source file:org.apache.blur.manager.clusterstatus.ZookeeperClusterStatus.java

License:Apache License

public ZookeeperClusterStatus(String connectionStr, BlurConfiguration configuration, Configuration config)
        throws IOException {
    this(new ZooKeeper(connectionStr, 30000, new Watcher() {
        @Override/*from  w w w . ja va 2  s .c om*/
        public void process(WatchedEvent event) {

        }
    }), configuration, config);
}

From source file:org.apache.blur.manager.clusterstatus.ZookeeperClusterStatusTest.java

License:Apache License

@Before
public void setup() throws KeeperException, InterruptedException, IOException {
    zooKeeper1 = new ZooKeeperClient(miniCluster.getZkConnectionString(), 30000, new Watcher() {
        @Override//from   w  ww . ja  va  2  s  .  c o  m
        public void process(WatchedEvent event) {

        }
    });
    BlurUtil.setupZookeeper(zooKeeper1, DEFAULT);
    zooKeeper2 = new ZooKeeperClient(miniCluster.getZkConnectionString(), 30000, new Watcher() {
        @Override
        public void process(WatchedEvent event) {

        }
    });
    BlurUtil.setupZookeeper(zooKeeper1, DEFAULT);
    BlurUtil.setupZookeeper(zooKeeper2, DEFAULT);
    clusterStatus1 = new ZookeeperClusterStatus(zooKeeper1);
    clusterStatus2 = new ZookeeperClusterStatus(zooKeeper2);
}

From source file:org.apache.blur.manager.indexserver.MasterBasedDistributedLayoutFactoryTest.java

License:Apache License

@Before
public void setup() throws IOException, KeeperException, InterruptedException {
    _zooKeeper = new ZooKeeperClient(miniCluster.getZkConnectionString(), 50000, new Watcher() {
        @Override//from  w ww .j  a va  2 s  .  c  o  m
        public void process(WatchedEvent event) {

        }
    });
    rmr(_zooKeeper, "/blur");
}

From source file:org.apache.blur.manager.indexserver.SafeModeTest.java

License:Apache License

@Before
public void setup() throws IOException {
    zk = new ZooKeeperClient(miniCluster.getZkConnectionString(), 20000, new Watcher() {
        @Override// w  w  w .  j a v a  2  s.  c om
        public void process(WatchedEvent event) {

        }
    });
}

From source file:org.apache.blur.manager.indexserver.SafeModeTest.java

License:Apache License

@Test
public void testExtraNodeStartup() throws IOException, InterruptedException, KeeperException {
    ZooKeeper zk = new ZooKeeper(miniCluster.getZkConnectionString(), 20000, new Watcher() {
        @Override//from   www . j a va 2  s .co m
        public void process(WatchedEvent event) {

        }
    });

    SafeMode setupSafeMode = new SafeMode(zk, "/testing/safemode", "/testing/nodepath", TimeUnit.SECONDS, 5,
            TimeUnit.SECONDS, 60, 0);
    setupSafeMode.registerNode("node1", null);

    SafeMode safeMode = new SafeMode(zk, "/testing/safemode", "/testing/nodepath", TimeUnit.SECONDS, 5,
            TimeUnit.SECONDS, 60, 0);
    long s = System.nanoTime();
    safeMode.registerNode("node101", null);
    long e = System.nanoTime();

    assertTrue((e - s) < TimeUnit.SECONDS.toNanos(1));
    zk.close();
}

From source file:org.apache.blur.manager.indexserver.SafeModeTest.java

License:Apache License

@Test
public void testSecondNodeStartup() throws IOException, InterruptedException, KeeperException {
    ZooKeeper zk = new ZooKeeper(miniCluster.getZkConnectionString(), 20000, new Watcher() {
        @Override/*  w ww  .  j  a  v a2 s  . c  om*/
        public void process(WatchedEvent event) {

        }
    });

    SafeMode setupSafeMode = new SafeMode(zk, "/testing/safemode", "/testing/nodepath", TimeUnit.SECONDS, 5,
            TimeUnit.SECONDS, 60, 0);
    setupSafeMode.registerNode("node10", null);

    SafeMode safeMode = new SafeMode(zk, "/testing/safemode", "/testing/nodepath", TimeUnit.SECONDS, 5,
            TimeUnit.SECONDS, 15, 0);
    try {
        safeMode.registerNode("node10", null);
        fail("should throw exception.");
    } catch (Exception e) {
    }
    zk.close();
}

From source file:org.apache.blur.MiniCluster.java

License:Apache License

public String getControllerConnectionStr() {
    String zkConnectionString = zkMiniCluster.getZkConnectionString();
    ZooKeeper zk;// w ww  . j  av a  2s.  c o m
    try {
        zk = new ZooKeeperClient(zkConnectionString, 30000, new Watcher() {
            @Override
            public void process(WatchedEvent event) {

            }
        });
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    String onlineControllersPath = ZookeeperPathConstants.getOnlineControllersPath();
    try {
        List<String> children = zk.getChildren(onlineControllersPath, false);
        StringBuilder builder = new StringBuilder();
        for (String s : children) {
            if (builder.length() != 0) {
                builder.append(',');
            }
            builder.append(s);
        }
        return builder.toString();
    } catch (KeeperException e) {
        throw new RuntimeException(e);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    } finally {
        try {
            zk.close();
        } catch (InterruptedException e) {
            LOG.error("Unkown error while trying to close ZooKeeper client.", e);
        }
    }
}

From source file:org.apache.blur.MiniCluster.java

License:Apache License

private MiniClusterServer toMiniClusterServerInternal(int serverIndex, TYPE type,
        final BlurConfiguration configuration) {
    final ThriftServer thriftServer;
    try {/*from  www  .  jav a2s. co m*/
        thriftServer = getThriftServer(serverIndex, type, configuration);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    return new MiniClusterServer() {

        @Override
        public void close() throws IOException {
            thriftServer.close();
        }

        @Override
        public void kill() {
            ZooKeeper zk = null;
            try {
                int shardPort = ThriftServer.getBindingPort(thriftServer.getServerTransport());
                String nodeNameHostname = ThriftServer.getNodeName(configuration, BLUR_SHARD_HOSTNAME);
                String nodeName = nodeNameHostname + ":" + shardPort;
                zk = new ZooKeeperClient(getZkConnectionString(), 30000, new Watcher() {
                    @Override
                    public void process(WatchedEvent event) {

                    }
                });
                String onlineShardsPath = ZookeeperPathConstants
                        .getOnlineShardsPath(org.apache.blur.utils.BlurConstants.BLUR_CLUSTER);
                String path = onlineShardsPath + "/" + nodeName;
                zk.delete(path, -1);
                zk.close();
            } catch (Exception e) {
                throw new RuntimeException(e);
            } finally {
                if (zk != null) {
                    try {
                        zk.close();
                    } catch (InterruptedException e) {
                        LOG.error("Unknown error while trying to close ZooKeeper client.", e);
                    }
                }
            }
        }

        @Override
        public void start() {
            try {
                thriftServer.start();
            } catch (TTransportException e) {
                LOG.error(e);
                throw new RuntimeException(e);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }

        @Override
        public void waitUntilOnline() {
            while (true) {
                try {
                    Thread.sleep(50);
                } catch (InterruptedException e) {
                    return;
                }
                int localPort = ThriftServer.getBindingPort(thriftServer.getServerTransport());
                if (localPort == 0) {
                    continue;
                } else {
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        LOG.error("Unknown error", e);
                    }
                    return;
                }
            }
        }

    };
}

From source file:org.apache.blur.shell.RemoveShardServerCommand.java

License:Apache License

@Override
public void doit(PrintWriter out, Blur.Iface client, String[] args)
        throws CommandException, TException, BlurException {
    if (args.length != 2) {
        throw new CommandException("Invalid args: " + help());
    }//w w w.  ja  va  2  s.  c  om
    ZooKeeper zooKeeper = null;
    try {
        try {
            BlurConfiguration configuration = new BlurConfiguration();
            String connectString = configuration.get(BlurConstants.BLUR_ZOOKEEPER_CONNECTION);
            int sessionTimeout = configuration.getInt(BlurConstants.BLUR_ZOOKEEPER_TIMEOUT, 30000);
            zooKeeper = new ZooKeeper(connectString, sessionTimeout, new Watcher() {
                @Override
                public void process(WatchedEvent event) {

                }
            });
        } catch (IOException e) {
            if (Main.debug) {
                e.printStackTrace();
            }
            throw new CommandException(e.getMessage());
        }

        String node = args[1];

        out.println("Are you sure you want to remove the shard server [" + node + "]? [y/N]");
        out.flush();

        ConsoleReader reader = getConsoleReader();
        try {
            int readCharacter = reader.readCharacter();
            if (!(readCharacter == 'y' || readCharacter == 'Y')) {
                return;
            }
        } catch (IOException e) {
            if (Main.debug) {
                e.printStackTrace();
            }
            throw new CommandException(e.getMessage());
        }

        String path = "/blur/clusters/" + Main.getCluster(client) + "/online-nodes/" + node;
        zooKeeper.delete(path, -1);
    } catch (InterruptedException e) {
        if (Main.debug) {
            e.printStackTrace();
        }
        throw new CommandException(e.getMessage());
    } catch (KeeperException e) {
        if (Main.debug) {
            e.printStackTrace();
        }
        throw new CommandException(e.getMessage());
    } finally {
        if (zooKeeper != null) {
            try {
                zooKeeper.close();
            } catch (InterruptedException e) {
                if (Main.debug) {
                    e.printStackTrace();
                }
            }
        }
    }
}

From source file:org.apache.blur.trace.ZooKeeperDumpContents.java

License:Apache License

public static void main(String[] args) throws IOException, KeeperException, InterruptedException {
    BlurConfiguration configuration = new BlurConfiguration();
    String zkConnectionStr = configuration.get(BLUR_ZOOKEEPER_CONNECTION);
    ZooKeeper zooKeeper = new ZooKeeper(zkConnectionStr, 30000, new Watcher() {
        @Override//from  w  w w  .ja  v  a 2  s  . c  o m
        public void process(WatchedEvent event) {

        }
    });

    String parentPath = configuration.get(BLUR_ZOOKEEPER_TRACE_PATH);
    String id = args[0];

    String path = parentPath + "/" + id;
    List<String> children = zooKeeper.getChildren(path, false);
    System.out.println("[");
    boolean first = true;
    for (String c : children) {
        if (!first) {
            System.out.println(",");
        }
        Stat stat = zooKeeper.exists(path + "/" + c, false);
        byte[] data = zooKeeper.getData(path + "/" + c, false, stat);
        String string = new String(data);
        System.out.println(string);
        first = false;
    }
    System.out.println("]");
    zooKeeper.close();
}