List of usage examples for org.apache.zookeeper WatchedEvent getType
public EventType getType()
From source file:com.digitgroup.fullstackroad.j2ee.zookeeper.Client.java
License:Apache License
public void process(WatchedEvent e) { System.out.println(e);// www .j av a 2 s . c o m if (e.getType() == EventType.None) { switch (e.getState()) { case SyncConnected: connected = true; break; case Disconnected: connected = false; break; case Expired: expired = true; connected = false; System.out.println("Exiting due to session expiration"); default: break; } } }
From source file:com.digitgroup.fullstackroad.j2ee.zookeeper.Master.java
License:Apache License
/** * This method implements the process method of the * Watcher interface. We use it to deal with the * different states of a session. //from w ww . ja v a 2s. com * * @param e new session event to be processed */ public void process(WatchedEvent e) { LOG.info("Processing event: " + e.toString()); if (e.getType() == EventType.None) { switch (e.getState()) { case SyncConnected: connected = true; break; case Disconnected: connected = false; break; case Expired: expired = true; connected = false; LOG.error("Session expiration"); default: break; } } }
From source file:com.digitgroup.fullstackroad.j2ee.zookeeper.recovery.OrphanStatuses.java
License:Apache License
public static void main(String args[]) throws Exception { ZooKeeper zk = new ZooKeeper("localhost:" + args[0], 10000, new Watcher() { public void process(WatchedEvent event) { LOG.info("Received event: " + event.getType()); }/* w ww . j a v a 2 s . co m*/ }); (new OrphanStatuses(zk)).cleanUp(); }
From source file:com.digitgroup.fullstackroad.j2ee.zookeeper.Worker.java
License:Apache License
/** * Deals with session events like connecting * and disconnecting./*from www .jav a2 s . c o m*/ * * @param e new event generated */ public void process(WatchedEvent e) { LOG.info(e.toString() + ", " + hostPort); if (e.getType() == EventType.None) { switch (e.getState()) { case SyncConnected: /* * Registered with ZooKeeper */ connected = true; break; case Disconnected: connected = false; break; case Expired: expired = true; connected = false; LOG.error("Session expired"); default: break; } } }
From source file:com.dingwang.rpc.register.ServiceDiscovery.java
License:Open Source License
private void watchNode(final ZooKeeper zk) { try {/*from w w w. j a v a2 s . c o m*/ List<String> nodeList = zk.getChildren(Constant.ZK_REGISTRY_PATH, new Watcher() { @Override public void process(WatchedEvent event) { if (event.getType() == Event.EventType.NodeChildrenChanged) { watchNode(zk); } } }); List<String> dataList = new ArrayList<>(); for (String node : nodeList) { byte[] bytes = zk.getData(Constant.ZK_REGISTRY_PATH + "/" + node, false, null); dataList.add(new String(bytes)); } LOGGER.debug("node data: {}", dataList); this.dataList = dataList; } catch (KeeperException | InterruptedException e) { LOGGER.error("", e); } }
From source file:com.dinstone.zkclient.leader.ZookeeperTest.java
License:Apache License
/** * @return//from ww w. j av a 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 www. j av a 2 s .c o m } } }); 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 ww.j av a 2 s .c om 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.dw.zk.ZkSessionPoller.java
License:Apache License
public static void main(String... args) throws Exception { org.apache.log4j.Logger rootLogger = org.apache.log4j.Logger.getRootLogger(); rootLogger.setLevel(Level.INFO); rootLogger.addAppender(new ConsoleAppender(new SimpleLayout())); final ZooKeeper zk = new ZooKeeper("172.16.84.129:2181", 2000, new Watcher() { @Override/*ww w . ja v a 2 s . c om*/ public void process(WatchedEvent event) { System.out.printf("state=%s\ttype=%s%n", event.getState(), event.getType()); } }); final CountDownLatch latch = new CountDownLatch(1); ZkSessionPoller poller = new ZkSessionPoller(zk, 200, new ConnectionListenerSkeleton() { @Override public void expired() { System.err.println("Session Expired, shutting down."); try { zk.close(); } catch (InterruptedException e) { throw new RuntimeException(e); } latch.countDown(); } }); poller.startPolling(); latch.await(); poller.stopPolling(); }
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 w w . j a v a 2 s . c o m*/ 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; } }