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:org.linkedin.zookeeper.tracker.ZooKeeperTreeTracker.java

License:Apache License

private boolean handleEvent(WatchedEvent event) {
    if (_destroyed) {
        return false;
    }//from   w w  w. j ava 2  s. co  m

    switch (event.getState()) {
    case SyncConnected:
        return true;

    case Disconnected:
        return false;

    case Expired:
        return false;

    default:
        return false;
    }
}

From source file:org.loggo.client.ZooSocketAppender.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    switch (event.getState()) {
    case SyncConnected:
        LogLog.debug("Connected to zookeeper");
        connect();/*from w  w  w  .j  ava 2  s.  com*/
        break;
    default:
        LogLog.debug("Unexpected event: " + event);
    }
}

From source file:org.loggo.client.ZooUDPAppender.java

License:Apache License

@SuppressWarnings("deprecation")
@Override//from w  w w . j a  va  2s. co  m
public void process(WatchedEvent event) {
    switch (event.getState()) {
    case AuthFailed:
        LogLog.error("Unable to connect to zookeeper");
        break;
    case ConnectedReadOnly:
        break;
    case Disconnected:
    case Expired:
        LogLog.error("Zookeeper disconnected: " + event.getState());
        break;
    case SaslAuthenticated:
        LogLog.debug("Zookeeper event " + event.getState());
        break;
    case SyncConnected:
        LogLog.debug("Connected: fetching address");
        reconfigure();
        break;
    case NoSyncConnected:
    case Unknown:
    default:
        LogLog.error("Unexpected zookeeper event " + event.getState());
        break;
    }
}

From source file:org.midonet.api.zookeeper.ZookeeperConnWatcher.java

License:Apache License

@Override
synchronized public void process(WatchedEvent watchedEvent) {
    log.debug("ZookeeperConnWatcher.process: Entered with event {}", watchedEvent.getState());

    if (watchedEvent.getState() == Event.KeeperState.SyncConnected) {
        apiNsdbEvent.connect();/*from w  w  w .ja  v a  2 s. c o m*/
    } else if (watchedEvent.getState() == Event.KeeperState.Disconnected) {
        apiNsdbEvent.disconnect();
    }

    // The ZK client re-connects automatically. However, after it
    // successfully reconnects, if the session had expired, we need to
    // create a new session.
    else if (watchedEvent.getState() == Watcher.Event.KeeperState.Expired && conn != null) {
        log.info("Session expired, reconnecting to ZK with a new session");
        apiNsdbEvent.connExpire();
        try {
            conn.reopen();
        } catch (Exception e) {
            throw new RuntimeException("Zookeeper could not be " + "restarted", e);
        }
    }

    log.debug("ZookeeperConnWatcher.process: Exiting");
}

From source file:org.midonet.cluster.backend.zookeeper.SessionUnawareConnectionWatcher.java

License:Apache License

@Override
synchronized public void process(WatchedEvent watchedEvent) {
    log.debug("ZookeeperConnWatcher.process: Entered with event {}", watchedEvent.getState());

    // The ZK client re-connects automatically. However, after it
    // successfully reconnects, if the session had expired, we need to
    // create a new session.
    if (watchedEvent.getState() == Watcher.Event.KeeperState.Expired && conn != null) {
        log.info("Session expired, reconnecting to ZK with a new session");
        try {// w  ww  .j av a2  s .  com
            conn.reopen();
        } catch (Exception e) {
            throw new RuntimeException("Zookeeper could not be " + "restarted", e);
        }
    }

    log.debug("ZookeeperConnWatcher.process: Exiting");
}

From source file:org.midonet.cluster.backend.zookeeper.ZkConnection.java

License:Apache License

@Override
public void process(WatchedEvent event) {
    synchronized (this) {
        if (connecting) {
            connecting = false;// w w w.  j  a v  a  2  s  .  c om
            if (event.getState() == KeeperState.SyncConnected)
                connected = true;
            notifyAll();
        }
    }
    if (null != watcher)
        watcher.process(event);
}

From source file:org.midonet.cluster.backend.zookeeper.ZookeeperConnectionWatcher.java

License:Apache License

@Override
public synchronized void process(WatchedEvent event) {
    if (event.getState() == Watcher.Event.KeeperState.Disconnected) {
        submitDisconnectCallbacks();/*  ww w .j  a va 2 s.c  om*/
    }

    if (event.getState() == Watcher.Event.KeeperState.SyncConnected) {
        if (conn != null) {
            if (sessionId == 0) {
                this.sessionId = conn.getZooKeeper().getSessionId();
            } else if (sessionId != conn.getZooKeeper().getSessionId()) {
                return;
            }
        } else {
            log.error("Got ZK connection event but ZkConnection "
                    + "has not been supplied, cannot track sessions");
        }

        submitReconnectCallbacks();
    }

    //TODO(abel) should this class process other Zookeeper events?
}

From source file:org.midonet.midolman.state.ZkDumper.java

License:Apache License

private static void setupZKConnection(final String host, final int port) throws Exception {
    int magic = 3000; // FIXME
    System.out.println("Connecting to ZooKeeper at " + host + ":" + port);
    zk = new ZooKeeper(host + ":" + port, magic, new Watcher() {
        @Override/*from  w ww .ja va2 s.c o m*/
        public synchronized void process(WatchedEvent event) {
            if (event.getState() == KeeperState.Disconnected) {
                System.err.println("Disconnected from ZooKeeper");
                System.exit(-1);
            } else if (event.getState() == KeeperState.SyncConnected) {
                System.out.println("Connected to ZooKeeper at " + host + ":" + port);
                available.release();
            } else if (event.getState() == KeeperState.Expired) {
                System.err.println("Session expired");
                System.exit(-1);
            }
        }
    });
    System.out.println("In progress to ZooKeeper at " + host + ":" + port);

    available.acquire();
}

From source file:org.midonet.midolman.state.ZookeeperConnectionWatcher.java

License:Apache License

@Override
public synchronized void process(WatchedEvent event) {
    if (event.getState() == Watcher.Event.KeeperState.Disconnected) {
        log.warn("KeeperState is Disconnected, will shutdown in {} "
                + "milliseconds if the connection is not restored.", config.getZkGraceTime());
        nsdbEvent.disconnect();//from   www.  ja  va  2  s  .  co m

        disconnectHandle = reactorLoop.schedule(new Runnable() {
            @Override
            public void run() {
                log.error("have been disconnected for {} milliseconds, " + "so exiting",
                        config.getZkGraceTime());
                nsdbEvent.connExpire();
                System.exit(7453);
            }
        }, config.getZkGraceTime(), TimeUnit.MILLISECONDS);
        submitDisconnectCallbacks();
    }

    if (event.getState() == Watcher.Event.KeeperState.SyncConnected) {
        if (conn != null) {
            if (sessionId == 0) {
                this.sessionId = conn.getZooKeeper().getSessionId();
            } else if (sessionId != conn.getZooKeeper().getSessionId()) {
                log.warn(
                        "Zookeeper connection restored to a new session " + "id (old={} new={}), shutting down",
                        sessionId, conn.getZooKeeper().getSessionId());
                System.exit(-1);
            }

            log.info("KeeperState is SyncConnected, SessionId={}", conn.getZooKeeper().getSessionId());
            nsdbEvent.connect();
        } else {
            log.error("Got ZK connection event but ZkConnection "
                    + "has not been supplied, cannot track sessions");
        }

        submitReconnectCallbacks();

        if (disconnectHandle != null) {
            log.info("canceling shutdown");
            disconnectHandle.cancel(true);
            disconnectHandle = null;
        }
    }

    if (event.getState() == Watcher.Event.KeeperState.Expired) {
        log.warn("KeeperState is Expired, shutdown now");
        nsdbEvent.connExpire();
        System.exit(-1);
    }

    //TODO(abel) should this class process other Zookeeper events?
}

From source file:org.neo4j.kernel.ha.zookeeper.ClusterManager.java

License:Open Source License

public void process(WatchedEvent event) {
    // System.out.println( "Got event: " + event );
    String path = event.getPath();
    if (path == null) {
        state = event.getState();
    }//from  w ww  . java2s .c o  m
}