Example usage for org.apache.zookeeper WatchedEvent getPath

Introduction

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

Prototype

public String getPath() 

Source Link

Usage

From source file:com.dangdang.config.service.easyzk.ConfigNodeEventListener.java

License:Apache License

@Override
public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception {
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug(event.toString());/*from  ww w. j a v a2  s.c  o m*/
    }

    final WatchedEvent watchedEvent = event.getWatchedEvent();
    if (watchedEvent != null) {

        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug(watchedEvent.toString());
        }

        if (watchedEvent.getState() == KeeperState.SyncConnected) {
            boolean someChange = false;
            switch (watchedEvent.getType()) {
            case NodeChildrenChanged:
                configNode.loadNode(false);
                someChange = true;
                break;
            case NodeDataChanged:
                configNode.loadKey(watchedEvent.getPath());
                someChange = true;
                break;
            default:
                break;
            }

            if (someChange && configNode.getConfigLocalCache() != null) {
                configNode.getConfigLocalCache().saveLocalCache(configNode, configNode.getNode());
            }
        }
    }
}

---

From source file:com.dangdang.config.service.zookeeper.ConfigNodeEventListener.java

License:Apache License

@Override
public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception {
    if (LOGGER.isDebugEnabled()) {
        LOGGER.debug(event.toString());/*from w  ww  . ja v a 2 s .  c om*/
    }

    final WatchedEvent watchedEvent = event.getWatchedEvent();
    if (watchedEvent != null) {
        LOGGER.debug("Watched event: {}" + watchedEvent);

        if (watchedEvent.getState() == KeeperState.SyncConnected) {
            boolean someChange = false;
            switch (watchedEvent.getType()) {
            case NodeChildrenChanged:
                configNode.loadNode();
                someChange = true;
                break;
            case NodeDataChanged:
                configNode.reloadKey(watchedEvent.getPath());
                someChange = true;
                break;
            default:
                break;
            }

            if (someChange && configNode.getConfigLocalCache() != null) {
                configNode.getConfigLocalCache().saveLocalCache(configNode, configNode.getNode());
            }
        }
    }
}

---

From source file:com.dangdang.config.service.zookeeper.ZookeeperConfigGroup.java

License:Apache License

/**
 * ?/*from  w ww.j a  va2s .  c  om*/
 */
private void initConfigs() {
    client = CuratorFrameworkFactory.newClient(configProfile.getConnectStr(), configProfile.getRetryPolicy());
    client.start();

    client.getCuratorListenable().addListener(new CuratorListener() {
        @Override
        public void eventReceived(CuratorFramework client, CuratorEvent event) throws Exception {
            LOGGER.info("Event: {}", event);

            final WatchedEvent watchedEvent = event.getWatchedEvent();
            if (watchedEvent != null) {
                LOGGER.debug("Watched event: {}", watchedEvent);

                if (watchedEvent.getState() == Watcher.Event.KeeperState.SyncConnected) {
                    switch (watchedEvent.getType()) {
                    case NodeChildrenChanged:
                        loadNode();
                        break;
                    case NodeDataChanged:
                        reloadKey(watchedEvent.getPath());
                        break;
                    default:
                        break;
                    }
                }
            }
        }
    });

    final CountDownLatch countDownLatch = new CountDownLatch(1);
    client.getConnectionStateListenable().addListener(new ConnectionStateListener() {

        @Override
        public void stateChanged(CuratorFramework client, ConnectionState newState) {
            LOGGER.info("Connection state change: {}", newState);
            if (newState == ConnectionState.CONNECTED) {
                LOGGER.debug("Loading properties for node: {}", node);
                loadNode();
                countDownLatch.countDown();
            } else if (newState == ConnectionState.RECONNECTED) {
                loadNode();
            }
        }
    });

    try {
        countDownLatch.await();
    } catch (InterruptedException e) {
        LOGGER.error(e.getMessage(), e);
        throw new RuntimeException("Config Load error.", e);
    }

    // Update local cache
    if (configLocalCache != null) {
        configLocalCache.saveLocalCache(this, node);
    }
}

---

From source file:com.dinstone.zkclient.core.ZkConnection.java

License:Apache License

public synchronized ZooKeeper getZooKeeper() throws InterruptedException {
    if (this.zooKeeper == null || !zooKeeper.getState().isAlive()) {
        final CountDownLatch connectSingal = new CountDownLatch(1);
        try {/*from w  w w .  j  a  va2s.  c o  m*/
            this.zooKeeper = new ZooKeeper(zkServers, timeout, new Watcher() {

                public void process(WatchedEvent event) {
                    LOG.debug("Received zookeeper event, {}", event.toString());
                    if (event.getPath() == null) {
                        if (KeeperState.SyncConnected == event.getState()) {
                            connectSingal.countDown();
                            fireStateChangedEvent(event.getState());
                        } else if (KeeperState.Disconnected == event.getState()) {
                            fireStateChangedEvent(event.getState());
                        } else if (KeeperState.Expired == event.getState()) {
                            LOG.debug("Session is expired, need to clear process");
                            fireStateChangedEvent(event.getState());
                        }
                    }
                }
            });
        } catch (IOException e) {
            throw new ZkException("connect zookeeper error", e);
        }
        connectSingal.await();
    }

    return this.zooKeeper;
}

---

From source file:com.dinstone.zkclient.leader.ZookeeperTest.java

License:Apache License

/**
 * @return/*from w  ww .  j ava 2  s  .  c  o  m*/
 */
private static ZooKeeper getZookeeper() {
    ZooKeeper zooKeeper = null;

    final CountDownLatch connectSingal = new CountDownLatch(1);
    try {
        String quorumServers = "172.21.31.32:2181";
        zooKeeper = new ZooKeeper(quorumServers, 1000, new Watcher() {

            public void process(WatchedEvent event) {
                System.out.println("Received zookeeper event, type={" + event.getType() + "}, state={"
                        + event.getState() + "}, ={" + event.getPath() + "}");

                if (KeeperState.SyncConnected == event.getState()) {
                    connectSingal.countDown();
                } else if (KeeperState.Expired == event.getState()) {
                    System.err.println("Session is expired, need to redo the action");
                }
            }
        });
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        connectSingal.await();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    return zooKeeper;
}

---

From source file:com.dinstone.zkclient.lock.ZkDistributedLock.java

License:Apache License

private void watch(Proposal prevOffer) throws KeeperException, InterruptedException {
    Stat stat = getZooKeeper().exists(prevOffer.getPath(), new Watcher() {

        public void process(WatchedEvent event) {
            if (event.getType().equals(Watcher.Event.EventType.NodeDeleted)) {
                if (!event.getPath().equals(ZkDistributedLock.this.proposal.getPath())) {
                    eventQueue.add(EventType.Retry);
                }/*from   w  w  w.j  a  v  a2s. c om*/
            }
        }

    });

    if (stat == null) {
        doLock();
    }
}

---

From source file:com.discovery.darchrow.ZookeeperClientTest.java

License:Open Source License

public static void main(String[] args) throws Exception {
    // ?/*from w w w. ja va  2s  .c o  m*/
    ZooKeeper zk = new ZooKeeper("localhost:2181", 30000, new Watcher() {
        // ?
        public void process(WatchedEvent event) {
            System.out.println("?:" + event.getState() + ":" + event.getType() + ":" + event.getWrapper()
                    + ":" + event.getPath());
        }
    });
    // ktv???????
    zk.create(ROOT, "root-ktv".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);

    // ??KTV ,       PERSISTENT_SEQUENTIAL  0000000000 ?
    zk.create(ROOT + "/?KTV", "?KTV".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE,
            CreateMode.PERSISTENT_SEQUENTIAL);

    // ?,       EPHEMERAL session 
    zk.create(ROOT + "/KTV", "KTV".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL);

    // ???EPHEMERAL_SEQUENTIAL  session ?
    zk.create(ROOT + "/KTV-", "KTV-".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE,
            CreateMode.EPHEMERAL_SEQUENTIAL);

    // ? ? ktv
    List<String> ktvs = zk.getChildren(ROOT, true);
    System.out.println(Arrays.toString(ktvs.toArray()));
    for (String node : ktvs) {
        // 
        zk.delete(ROOT + "/" + node, -1);
    }
    // ?
    zk.delete(ROOT, -1);
    zk.close();
}

---

From source file:com.ebay.jetstream.messaging.transport.zookeeper.ZooKeeperTransport.java

License:MIT License

/**
 * Call back receiver method to process notifications on node changes.
 *//*from   w  ww . j  a v a2s .  com*/
public void process(WatchedEvent event) {
    LOGGER.info("Event State :: " + event.getState().name() + " Event Type:: " + event.getType()
            + " Event path :: " + event.getPath());

    if (m_shutdown.get()) {
        LOGGER.warn("Transport is in Shutdown State.");
        return;
    }

    switch (event.getType()) {

    case NodeChildrenChanged:
        if (m_group != null) {
            boolean isDiscoveryTopic = false;
            for (String nettydiscoverable : m_NettyDiscoverableTopics) {
                if (event.getPath().contains(nettydiscoverable)) {
                    isDiscoveryTopic = true;
                    for (String nettyconextnode : m_nettyContexts) {
                        if (event.getPath().contains(nettyconextnode)) {
                            m_group.registerChildrenCallback(event.getPath());
                            m_group.getChildrenAndSetWatch(event.getPath());
                            break;
                        }
                    }
                }
            }
            if (!isDiscoveryTopic) {
                m_group.registerChildrenCallback(event.getPath());
                m_group.getChildrenAndSetWatch(event.getPath());
            }
        }

        break;

    case NodeCreated:
        if (m_group != null) {
            m_group.registerDataCallBack(event.getPath());
        }
        break;

    case NodeDataChanged:
        if (m_group != null) {
            m_group.registerDataCallBack(event.getPath());
        }
        break;

    case NodeDeleted:
        if (m_group != null) {
            int parentIndex = event.getPath().lastIndexOf('/');
            String parentNode = event.getPath().substring(0, parentIndex);
            m_group.getChildrenAndSetWatch(parentNode);
        }
        break;

    case None:
        break;
    default:
        break;
    }

}

---

From source file:com.ebay.jetstream.messaging.zookeeper.lp.Consumer.java

License:MIT License

@Override
public void process(WatchedEvent event) {
    switch (event.getType()) {
    case NodeChildrenChanged:
        childrenChanged++;//from   w  ww  .j  ava 2  s.c  o m
        setChildrenWatch(event.getPath());
        break;
    case NodeCreated:
        nodecreated++;
        setChildrenWatch(event.getPath());
        break;
    case NodeDataChanged:
        //System.out.println(" changed Node" + event.getPath());
        datachanged++;
        getData(event.getPath());
        setNodeWatch(event.getPath());

        break;
    case NodeDeleted:
        break;
    case None:
        break;
    default:
        break;
    }
}

---

From source file:com.edmunds.etm.agent.impl.RuleSetMonitor.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    String path = event.getPath();
    if (path != null && path.equals(ruleSetNodePath)) {
        switch (event.getType()) {
        case NodeCreated:
        case NodeDataChanged:
            AsyncCallback.DataCallback cb = new AsyncCallback.DataCallback() {
                @Override/*from   www .  j av  a 2 s  .com*/
                public void processResult(int rc, String path, Object ctx, byte[] data, Stat stat) {
                    onGetRuleSetData(Code.get(rc), path, data);
                }
            };
            connection.getData(ruleSetNodePath, this, cb, null);
        case None:
        case NodeDeleted:
        case NodeChildrenChanged:
        default:
            // Ignore other event types
        }
    }
}

---

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