public void process(WatchedEvent e) {
log.info(e.getPath());
// System.out.println(e.getPath() + " " + e.toString());
if (e.getState() == Watcher.Event.KeeperState.Expired) {
handleExpired();
} else if (e.getState() == Watcher.Event.KeeperState.Disconnected) {
log.warn("ZKDisconnected! {}", e.toString());
} else if (e.getState() == Watcher.Event.KeeperState.SyncConnected) {
log.warn("ZKSyncConnected! {}", e.toString());
ZKClient.this.handleSynConnected();
}
}
public synchronized void process(WatchedEvent event) {
try {
System.out.println("Got an event " + event.toString());
events.put(event);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private void enode_test_2() throws IOException, InterruptedException, KeeperException {
checkRoot();
String parentName = testDirOnZK;
String nodeName = parentName + "/enode_abc";
ZooKeeper zk = new ZooKeeper(hostPort, 10000, this);
ZooKeeper zk_1 = new ZooKeeper(hostPort, 10000, this);
Stat stat = zk_1.exists(parentName, false);
if (stat == null) {
try {
zk.create(parentName, null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
} catch (KeeperException ke) {
fail("Creating node " + parentName + ke.getMessage());
}
}
stat = zk_1.exists(nodeName, false);
if (stat != null) {
try {
zk.delete(nodeName, -1);
} catch (KeeperException ke) {
int code = ke.getCode();
boolean valid =
code == KeeperException.Code.NoNode || code == KeeperException.Code.NotEmpty;
if (!valid) {
fail("Unexpected exception code for delete: " + ke.getMessage());
}
}
}
List<String> firstGen = zk_1.getChildren(parentName, true);
try {
zk.create(nodeName, null, Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL);
} catch (KeeperException ke) {
int code = ke.getCode();
boolean valid = code == KeeperException.Code.NodeExists;
if (!valid) {
fail("Unexpected exception code for createin: " + ke.getMessage());
}
}
Thread.sleep(5000);
WatchedEvent event = events.poll(10, TimeUnit.SECONDS);
if (event == null) {
throw new IOException("No event was delivered promptly");
}
if (event.getType() != EventType.NodeChildrenChanged
|| !event.getPath().equalsIgnoreCase(parentName)) {
fail("Unexpected event was delivered: " + event.toString());
}
stat = zk_1.exists(nodeName, false);
if (stat == null) {
fail("node " + nodeName + " should exist");
}
try {
zk.delete(parentName, -1);
fail("Should be impossible to delete a non-empty node " + parentName);
} catch (KeeperException ke) {
int code = ke.getCode();
boolean valid = code == KeeperException.Code.NotEmpty;
if (!valid) {
fail("Unexpected exception code for delete: " + code);
}
}
try {
zk.create(nodeName + "/def", null, Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL);
fail("Should be impossible to create child off Ephemeral node " + nodeName);
} catch (KeeperException ke) {
int code = ke.getCode();
boolean valid = code == KeeperException.Code.NoChildrenForEphemerals;
if (!valid) {
fail("Unexpected exception code for createin: " + code);
}
}
try {
List<String> children = zk.getChildren(nodeName, false);
if (children.size() > 0) {
fail("ephemeral node " + nodeName + " should not have children");
}
} catch (KeeperException ke) {
int code = ke.getCode();
boolean valid = code == KeeperException.Code.NoNode;
if (!valid) {
fail("Unexpected exception code for createin: " + code);
}
}
firstGen = zk_1.getChildren(parentName, true);
stat = zk_1.exists(nodeName, true);
if (stat == null) {
fail("node " + nodeName + " should exist");
}
System.out.println("session id of zk: " + zk.getSessionId());
System.out.println("session id of zk_1: " + zk_1.getSessionId());
zk.close();
stat = zk_1.exists("nosuchnode", false);
event = this.getEvent(10);
if (event == null) {
throw new AssertionFailedError("First event was not delivered promptly");
}
if (!((event.getType() == EventType.NodeChildrenChanged
&& event.getPath().equalsIgnoreCase(parentName))
|| (event.getType() == EventType.NodeDeleted
&& event.getPath().equalsIgnoreCase(nodeName)))) {
System.out.print(
parentName
+ " "
+ EventType.NodeChildrenChanged
+ " "
+ nodeName
+ " "
+ EventType.NodeDeleted);
fail("Unexpected first event was delivered: " + event.toString());
}
event = this.getEvent(10);
if (event == null) {
throw new AssertionFailedError("Second event was not delivered promptly");
}
if (!((event.getType() == EventType.NodeChildrenChanged
&& event.getPath().equalsIgnoreCase(parentName))
|| (event.getType() == EventType.NodeDeleted
&& event.getPath().equalsIgnoreCase(nodeName)))) {
System.out.print(
parentName
+ " "
+ EventType.NodeChildrenChanged
+ " "
+ nodeName
+ " "
+ EventType.NodeDeleted);
fail("Unexpected second event was delivered: " + event.toString());
}
firstGen = zk_1.getChildren(parentName, false);
stat = zk_1.exists(nodeName, false);
if (stat != null) {
fail("node " + nodeName + " should have been deleted");
}
if (firstGen.contains(nodeName)) {
fail("node " + nodeName + " should not be a children");
}
deleteZKDir(zk_1, nodeName);
zk_1.close();
}
public void process(WatchedEvent event) {
if (getPrintWatches()) {
printMessage("WATCHER::");
printMessage(event.toString());
}
}
@Override
public void process(WatchedEvent event) {
// nothing to do...
LOG.info(event.toString());
}
/**
* Handles event from ZooKeeper for this coordinate.
*
* @param event
*/
@Override
public void process(WatchedEvent event) {
LOG.info("Got an event from ZooKeeper " + event.toString());
synchronized (lastStatusVersionMonitor) {
switch (event.getType()) {
case None:
switch (event.getState()) {
case SyncConnected:
break;
case Disconnected:
case AuthFailed:
case Expired:
default:
// If we lost connection, we don't attempt to register another watcher as
// this might be blocking forever. Parent will try to reconnect (reclaim)
// later.
isSynchronizedWithZooKeeper.set(false);
sendEventToCoordinateListener(
CoordinateListener.Event.NO_CONNECTION_TO_STORAGE, event.toString());
return;
}
return;
case NodeDeleted:
// If node is deleted, we have no node to place a new watcher so we stop watching.
isSynchronizedWithZooKeeper.set(false);
sendEventToCoordinateListener(CoordinateListener.Event.NOT_OWNER, event.toString());
return;
case NodeDataChanged:
LOG.fine("Node data changed, check versions.");
boolean verifiedSynchronized = false;
try {
final Stat stat = zkClient.getZookeeper().exists(path, this);
if (stat == null) {
LOG.info("Could not stat path, setting out of synch, will retry claim");
} else {
LOG.fine("Previous version is " + lastStatusVersion + " now is " + stat.getVersion());
if (stat.getVersion() != lastStatusVersion) {
LOG.fine("Version mismatch, sending out of sync.");
} else {
verifiedSynchronized = true;
}
}
} catch (KeeperException e) {
LOG.fine(
"Problems with zookeeper, sending consistencyState out of sync: " + e.getMessage());
} catch (InterruptedException e) {
LOG.fine("Got interrupted: " + e.getMessage());
return;
} finally {
isSynchronizedWithZooKeeper.set(verifiedSynchronized);
}
if (verifiedSynchronized) {
sendEventToCoordinateListener(
CoordinateListener.Event.COORDINATE_OUT_OF_SYNC, event.toString());
}
return;
case NodeChildrenChanged:
case NodeCreated:
// This should not happen..
isSynchronizedWithZooKeeper.set(false);
sendEventToCoordinateListener(
CoordinateListener.Event.COORDINATE_OUT_OF_SYNC, event.toString());
return;
}
}
}
@Override
public void process(WatchedEvent event) {
System.out.println(event.toString());
}