List of usage examples for org.apache.zookeeper WatchedEvent getState
public KeeperState getState()
From source file:org.phunt.zookeeper.removewatchexample.ExerciseRemoveWatchTest.java
License:Apache License
@Override public void process(WatchedEvent event) { if (event.getState() == KeeperState.SyncConnected) { zkAvail.countDown(); } }
From source file:org.prot.util.zookeeper.ZooHelper.java
License:Open Source License
@Override public void process(WatchedEvent event) { logger.info("ZooKeeper event"); switch (event.getState()) { case Expired: logger.info("ZooKeeper session expired"); break;//ww w. ja v a 2 s. c o m case Disconnected: logger.info("ZooKeeper disconnected"); break; default: logger.debug("Unhandled ZooKeeper event"); return; } reconnect(); }
From source file:org.reborndb.reborn.TestRoundRobinJedisPool.java
License:Open Source License
public ZooKeeper connect(String host, int timeout) throws Exception { final CountDownLatch connectedLatch = new CountDownLatch(1); try {/*w w w. j a va2 s . co m*/ ZooKeeper zk = new ZooKeeper(host, timeout, new Watcher() { @Override public void process(WatchedEvent event) { if (event.getState() == Event.KeeperState.SyncConnected) { connectedLatch.countDown(); } } }); if (ZooKeeper.States.CONNECTING == zk.getState()) { connectedLatch.await(); } return zk; } catch (Exception e) { return null; } }
From source file:org.rioproject.zookeeper.watcher.ZooKeeperServiceWatcher.java
License:Apache License
public void process(WatchedEvent event) { String path = event.getPath(); if (logger.isDebugEnabled()) logger.debug("{}", event); if (path == null) return;//w w w . j a v a 2s . com if (event.getType() == Event.EventType.None && event.getState().equals(Event.KeeperState.Expired)) { services.remove(path).serviceFailure(null, path); } else { if (logger.isDebugEnabled()) logger.debug("Path: {}", path); if (services.get(path) != null) { /* Something has changed on the node, let's find out if it still exists */ zooKeeper.exists(path, false, new AsyncCallback.StatCallback() { public void processResult(int rc, String path, Object ctx, Stat stat) { if (KeeperException.Code.NONODE.equals(KeeperException.Code.get(rc))) { services.remove(path).serviceFailure(null, path); } } }, null); } } }
From source file:org.trafodion.rest.zookeeper.ZkClient.java
License:Apache License
@Override public void process(WatchedEvent event) { if (event.getState() == Watcher.Event.KeeperState.SyncConnected) { connectedSignal.countDown();//w ww . ja va2 s.c o m } }
From source file:org.usergrid.locking.zookeeper.ZooPut.java
License:Apache License
@Override public void process(WatchedEvent event) { // nocommit: consider how we want to accomplish this if (event.getState() == KeeperState.SyncConnected) { synchronized (this) { connected = true;/*from ww w . jav a 2 s . c o m*/ this.notify(); } } }
From source file:perLucene.ZooTiger.java
License:Open Source License
ZooTiger() {
String[] line = Config.readLocalConfig();
super.initZookeeper(line[0], Integer.parseInt(line[1]), new Watcher() {
@Override/* w w w .j a v a 2s . co m*/
public void process(WatchedEvent e) {
if (!(e.getState().equals(Watcher.Event.KeeperState.SyncConnected))) {
System.out.println("Disconnected.. exiting");
System.exit(0);
}
}
});
interval = Integer.parseInt(line[2]);
replica = Integer.parseInt(line[3]);
broker = new Broker();
}
From source file:yangqi.code.DataMonitor.java
License:Open Source License
public void process(WatchedEvent event) { String path = event.getPath(); System.out.println("GOT EVENT " + event + " @" + new Date() + ",type is " + event.getType()); if (event.getType() == Event.EventType.None) { // We are are being told that the state of the // connection has changed switch (event.getState()) { case SyncConnected: // In this particular example we don't need to do anything // here - watches are automatically re-registered with // server and any watches triggered while the client was // disconnected will be delivered (in order of course) break; case Expired: // It's all over dead = true;//from w ww. j av a 2 s. co m listener.closing(KeeperException.Code.SessionExpired); break; case AuthFailed: break; case ConnectedReadOnly: break; case Disconnected: break; case NoSyncConnected: break; case SaslAuthenticated: break; case Unknown: break; default: break; } } else { if (path != null && path.equals(znode)) { // Something has changed on the node, let's find out zk.exists(znode, true, this, null); } } if (chainedWatcher != null) { chainedWatcher.process(event); } }
From source file:zk.ha.ActiveStandbyElector.java
License:Apache License
synchronized void processWatchEvent(ZooKeeper zk, WatchedEvent event) { Event.EventType eventType = event.getType(); if (eventType == Event.EventType.None) { // the connection state has changed switch (event.getState()) { case SyncConnected: LOG.info("Session connected."); // if the listener was asked to move to safe state then it needs to // be undone ConnectionState prevConnectionState = zkConnectionState; zkConnectionState = ConnectionState.CONNECTED; if (prevConnectionState == ConnectionState.DISCONNECTED && wantToBeInElection) { monitorActiveStatus();/*from w w w . j a va 2 s . com*/ } break; case Disconnected: LOG.info("Session disconnected. Entering neutral mode..."); // ask the app to move to safe state because zookeeper connection // is not active and we dont know our state zkConnectionState = ConnectionState.DISCONNECTED; // enterNeutralMode(); break; case Expired: // the connection got terminated because of session timeout // call listener to reconnect // LOG.info("Session expired. Entering neutral mode and rejoining..."); // enterNeutralMode(); // reJoinElection(0); break; case SaslAuthenticated: LOG.info("Successfully authenticated to ZooKeeper using SASL."); break; default: fatalError("Unexpected Zookeeper watch event state: " + event.getState()); break; } return; } // a watch on lock path in zookeeper has fired. so something has changed on // the lock. ideally we should check that the path is the same as the lock // path but trusting zookeeper for now String path = event.getPath(); if (path != null) { switch (eventType) { case NodeDeleted: if (state == State.ACTIVE) { enterNeutralMode(); } joinElectionInternal(); break; case NodeDataChanged: // monitorActiveStatus(); break; default: if (LOG.isDebugEnabled()) { LOG.debug("Unexpected node event: " + eventType + " for path: " + path); } // monitorActiveStatus(); } return; } // some unexpected error has occurred fatalError("Unexpected watch error from Zookeeper"); }
From source file:zookeeper.CountdownWatcher.java
License:Apache License
public synchronized void process(WatchedEvent event) { System.out.println("Watcher " + name + " got event " + event); state = event.getState(); if (state == KeeperState.SyncConnected) { connected = true;/*from w ww.j a va2s .c om*/ clientConnected.countDown(); } else { connected = false; } notifyAll(); }