Example usage for org.apache.zookeeper WatchedEvent getState

Introduction

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

Prototype

public KeeperState getState() 

Source Link

Usage

From source file:edu.uci.ics.asterix.event.service.ZooKeeperService.java

License:Apache License

public void process(WatchedEvent wEvent) {
    switch (wEvent.getState()) {
    case SyncConnected:
        msgQ.add("connected");
        break;/*  www .jav a2s .  c o  m*/
    }
}

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From source file:fr.ens.biologie.genomique.eoulsan.util.locker.ZooKeeperLocker.java

License:LGPL

@Override
public void process(final WatchedEvent event) {

    if (event.getState() == KeeperState.SyncConnected) {
        this.response = true;
    }/*from w  ww  .  j a  v  a  2s.co m*/
}

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From source file:gr.ntua.h2rdf.client.Executor.java

License:Open Source License

public void process(WatchedEvent event) {
    //System.out.println("message");
    String path = event.getPath();
    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:
            try {
                zk.close();//w  w  w .ja v  a  2  s . c o  m
                zk = new ZooKeeper(conf.getAddress(), 3000, this);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            break;
        }
    } else {
        if (path.equals(filename) && (event.getType() == Event.EventType.NodeCreated)) {
            // It's all over
            System.out.println("Finished ");
            try {
                dead = true;
                Stat stat = null;
                outfile = Bytes.toString(zk.getData(filename, false, stat));
                //System.out.println(outfile +"dfsdfsd");
                zk.delete(filename, 0);
                synchronized (this) {
                    notifyAll();
                }
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (KeeperException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /*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;
        synchronized (this) {
            notifyAll();
        }
        break;
    }
    } else {
    if (path != null && path.equals(filename)) {
        // Something has changed on the node, let's find out
        zk.exists(filename, true, this, null);
    }
    }*/
}

---

From source file:gr.ntua.h2rdf.client.ExecutorOpenRdf.java

License:Open Source License

public void process(WatchedEvent event) {
    //System.out.println("message");
    String path = event.getPath();
    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:
            try {
                zk.close();//  w  ww.  j  a va2  s  .  c o m
                zk = new ZooKeeper(conf.getAddress(), 3000, this);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            break;
        }
    } else {
        if (path.equals(filename) && (event.getType() == Event.EventType.NodeCreated)) {
            // It's all over
            //System.out.println("Finished ");
            try {
                dead = true;
                Stat stat = null;
                outfile = Bytes.toString(zk.getData(filename, false, stat));
                //System.out.println(outfile +"dfsdfsd");
                zk.delete(filename, 0);
                synchronized (this) {
                    notifyAll();
                }
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (KeeperException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    /*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;
           synchronized (this) {
               notifyAll();
           }
           break;
       }
    } else {
       if (path != null && path.equals(filename)) {
           // Something has changed on the node, let's find out
           zk.exists(filename, true, this, null);
       }
    }*/
}

---

From source file:gr.ntua.h2rdf.concurrent.SyncPrimitive.java

License:Open Source License

synchronized public void process(WatchedEvent event) {
    synchronized (mutex) {
        //System.out.println("Process: " + event.getType());
        mutex.notify();//from  w w  w .  j a  va  2 s .co m
    }
    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:
            try {
                zk.close();
                zk = new ZooKeeper(address, 3000, this);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            break;
        }
    }
}

---

From source file:herddb.client.ZookeeperClientSideMetadataProvider.java

License:Apache License

public ZookeeperClientSideMetadataProvider(String zkAddress, int zkSessionTimeout, String basePath) {
    this(basePath, () -> {
        try {//from   ww  w.j  ava  2  s. c o m
            CountDownLatch waitForConnection = new CountDownLatch(1);
            ZooKeeper zk = new ZooKeeper(zkAddress, zkSessionTimeout, new Watcher() {
                @Override
                @SuppressFBWarnings(value = "SF_SWITCH_NO_DEFAULT")
                public void process(WatchedEvent event) {
                    LOG.log(Level.SEVERE, "zk client event " + event);
                    switch (event.getState()) {
                    case SyncConnected:
                    case ConnectedReadOnly:
                        waitForConnection.countDown();
                        break;
                    }
                }
            });
            boolean waitResult = waitForConnection.await(zkSessionTimeout * 2L, TimeUnit.SECONDS);
            return zk;
        } catch (Exception err) {
            LOG.log(Level.SEVERE, "zk client error " + err, err);
            return null;
        }
    });
    this.ownZooKeeper = true;
}

---

From source file:herddb.cluster.ZookeeperMetadataStorageManager.java

License:Apache License

private synchronized void restartZooKeeper() throws IOException, InterruptedException {
    ZooKeeper old = zooKeeper;//from w w  w.j  a va 2  s  .  co m
    if (old != null) {
        old.close();
    }
    CountDownLatch firstConnectionLatch = new CountDownLatch(1);

    ZooKeeper zk = new ZooKeeper(zkAddress, zkSessionTimeout, new Watcher() {
        @Override
        public void process(WatchedEvent event) {
            switch (event.getState()) {
            case SyncConnected:
            case SaslAuthenticated:
                firstConnectionLatch.countDown();
                notifyMetadataChanged();
                break;
            default:
                // ignore
                break;
            }
        }
    });
    if (!firstConnectionLatch.await(zkSessionTimeout, TimeUnit.SECONDS)) {
        zk.close();
        throw new IOException(
                "Could not connect to zookeeper at " + zkAddress + " within " + zkSessionTimeout + " ms");
    }
    this.zooKeeper = zk;
    LOGGER.info("Connected to ZK " + zk);
}

---

From source file:herddb.cluster.ZookeeperMetadataStorageManagerTest.java

License:Apache License

private void expireZkSession(long sessionId, byte[] passwd) throws InterruptedException, IOException {
    CountDownLatch waitConnection = new CountDownLatch(1);
    try (ZooKeeper zooKeeper = new ZooKeeper(testEnv.getAddress(), testEnv.getTimeout(), new Watcher() {
        @Override// w  w  w . j  a v a2  s .  com
        public void process(WatchedEvent event) {
            switch (event.getState()) {
            case SyncConnected:
                waitConnection.countDown();
                break;
            }
        }
    }, sessionId, passwd)) {
        assertTrue(waitConnection.await(1, TimeUnit.MINUTES));
    }
}

---

From source file:hws.util.ZkDataMonitor.java

License:Apache License

public ZkClient(String serverAddr, int sessionTimeout) throws IOException, InterruptedException {
    final CountDownLatch connectedSignal = new CountDownLatch(1);
    this.zk = new ZooKeeper(serverAddr, sessionTimeout, new Watcher() {
        @Override/* ww  w . j  av  a2s.  com*/
        public void process(WatchedEvent event) {
            if (event.getState() == Watcher.Event.KeeperState.SyncConnected) {
                connectedSignal.countDown();
            }
        }
    });
    connectedSignal.await();
}

---

From source file:io.confluent.admin.utils.ZookeeperConnectionWatcher.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    if (event.getType() == Event.EventType.None) {
        switch (event.getState()) {
        case SyncConnected:
            // If SASL is enabled, we want to wait for the SaslAuthenticated event.
            if (!isSASLEnabled) {
                connectSignal.countDown();
            }/*w  ww  .  j  av  a  2  s .c om*/
            break;
        case Expired:
            failureMessage = "Session expired.";
            isSuccessful = false;
            connectSignal.countDown();
            break;
        case Disconnected:
            failureMessage = "Disconnected from the server.";
            isSuccessful = false;
            connectSignal.countDown();
            break;
        case AuthFailed:
            failureMessage = "Authentication failed.";
            isSuccessful = false;
            connectSignal.countDown();
            break;
        case SaslAuthenticated:
            connectSignal.countDown();
            break;
        }
    }
}

---

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