/**
* Start watching a node, optionnaly waiting for it to be created
*
* @param zk
* @param nodePath
* @param waitForCreation
* @throws KeeperException
* @throws InterruptedException
*/
protected WatchedNode(final ZooKeeperPlus zk, final String nodePath, boolean waitForCreation)
throws KeeperException, InterruptedException {
this.zk = zk;
this.nodePath = nodePath;
// Immediately try to load the data, if it fails, then optionally wait
try {
watchForData();
} catch (KeeperException.NoNodeException e) {
if (waitForCreation) {
NodeCreationBarrier.block(zk, nodePath);
watchForData();
} else {
watchForCreation();
}
}
}
// Will block until specified node is created or connection is lost
public void block() throws InterruptedException, KeeperException {
block(0);
}