Example usage for org.apache.zookeeper ZooKeeper removeWatches

Introduction

In this page you can find the example usage for org.apache.zookeeper ZooKeeper removeWatches.

Prototype

public void removeWatches(String path, Watcher watcher, WatcherType watcherType, boolean local)
        throws InterruptedException, KeeperException 

Source Link

Document

For the given znode path, removes the specified watcher of given watcherType.

Usage

From source file:org.apache.bookkeeper.zookeeper.ZooKeeperClient.java

License:Apache License

@Override
public void removeWatches(String path, Watcher watcher, WatcherType watcherType, boolean local)
        throws InterruptedException, KeeperException {
    ZooKeeper zkHandle = zk.get();
    if (null == zkHandle) {
        ZooKeeperClient.super.removeWatches(path, watcher, watcherType, local);
    } else {/*  ww  w.  ja  v a 2 s  .  c  o  m*/
        zkHandle.removeWatches(path, watcher, watcherType, local);
    }
}

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From source file:org.apache.curator.framework.imps.RemoveWatchesBuilderImpl.java

License:Apache License

private void pathInForeground(final String path) throws Exception {
    NamespaceWatcher namespaceWatcher = makeNamespaceWatcher(path);
    //For the local case we don't want to use the normal retry loop and we don't want to block until a connection is available.
    //We just execute the removeWatch, and if it fails, ZK will just remove local watches.
    if (local) {/*from   www.jav  a  2 s  .c  o  m*/
        ZooKeeper zkClient = client.getZooKeeper();
        if (namespaceWatcher != null) {
            zkClient.removeWatches(path, namespaceWatcher, watcherType, local);
        } else {
            zkClient.removeAllWatches(path, watcherType, local);
        }
    } else {
        final NamespaceWatcher finalNamespaceWatcher = namespaceWatcher;
        RetryLoop.callWithRetry(client.getZookeeperClient(), new Callable<Void>() {
            @Override
            public Void call() throws Exception {
                try {
                    ZooKeeper zkClient = client.getZookeeperClient().getZooKeeper();

                    if (finalNamespaceWatcher != null) {
                        zkClient.removeWatches(path, finalNamespaceWatcher, watcherType, false);
                    } else {
                        zkClient.removeAllWatches(path, watcherType, false);
                    }
                } catch (Exception e) {
                    if (RetryLoop.isRetryException(e) && guaranteed) {
                        //Setup the guaranteed handler
                        client.getFailedRemoveWatcherManager()
                                .addFailedOperation(new FailedRemoveWatchManager.FailedRemoveWatchDetails(path,
                                        finalNamespaceWatcher));
                        throw e;
                    } else if (e instanceof KeeperException.NoWatcherException && quietly) {
                        // ignore
                    } else {
                        //Rethrow
                        throw e;
                    }
                }

                return null;
            }
        });
    }
}

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