Example usage for org.apache.zookeeper AsyncCallback.StatCallback AsyncCallback.StatCallback

Introduction

In this page you can find the example usage for org.apache.zookeeper AsyncCallback.StatCallback AsyncCallback.StatCallback.

Prototype

AsyncCallback.StatCallback

Source Link

Usage

From source file:com.jbrisbin.vpc.zk.GroovyZooKeeperHelper.java

License:Apache License

/**
 * Check if node exists asynchronously.//  ww  w.j  av a  2 s. c  o m
 *
 * @param path
 * @param watch
 * @param callback
 * @throws InterruptedException
 * @throws KeeperException
 */
public void exists(Object path, boolean watch, final Closure callback)
        throws InterruptedException, KeeperException {
    zookeeper.exists(getPathAsString(path), watch, new AsyncCallback.StatCallback() {
        public void processResult(int rc, String path, Object ctx, Stat stat) {
            callback.setProperty("returnCode", rc);
            callback.setProperty("path", path);
            callback.setDelegate(ctx);
            callback.call(stat);
        }
    }, this);
}

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From source file:com.jbrisbin.vpc.zk.GroovyZooKeeperHelper.java

License:Apache License

/**
 * Set a node's data asynchronously.//from  w  w w.  j a  v  a2 s  .  com
 *
 * @param path
 * @param data
 * @param version
 * @param callback
 */
public void setData(Object path, Object data, int version, final Closure callback) {
    zookeeper.setData(getPathAsString(path), serialize(data), version, new AsyncCallback.StatCallback() {
        public void processResult(int rc, String path, Object ctx, Stat stat) {
            callback.setDelegate(ctx);
            callback.setProperty("returnCode", rc);
            callback.setProperty("path", path);
            callback.call(stat);
        }
    }, this);
}

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From source file:com.sonian.elasticsearch.zookeeper.client.ZooKeeperClientService.java

License:Apache License

@Override
public boolean verifyConnection(TimeValue timeout) throws InterruptedException {
    if (connected()) {
        final AtomicBoolean stats = new AtomicBoolean(false);
        final CountDownLatch latch = new CountDownLatch(1);
        zooKeeper.exists("/", null, new AsyncCallback.StatCallback() {
            @Override/*from   ww w. j a  v a  2  s. c o  m*/
            public void processResult(int rc, String path, Object ctx, Stat stat) {
                stats.set(stat != null);
                latch.countDown();
            }
        }, null);
        latch.await(timeout.getMillis(), TimeUnit.MILLISECONDS);
        return stats.get();
    } else {
        return false;
    }
}

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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 .  ja v a2 s . 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);
        }
    }
}

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