Examples with WatchedEvent org.apache.zookeeper.WatchedEvent used on opensource projects

Example 81 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class WatchManager method triggerWatch.

@Override
public WatcherOrBitSet triggerWatch(String path, EventType type, WatcherOrBitSet supress) {
    WatchedEvent e = new WatchedEvent(type, KeeperState.SyncConnected, path);
    Set<Watcher> watchers = new HashSet<>();
    PathParentIterator pathParentIterator = getPathParentIterator(path);
    synchronized (this) {
        for (String localPath : pathParentIterator.asIterable()) {
            Set<Watcher> thisWatchers = watchTable.get(localPath);
            if (thisWatchers == null || thisWatchers.isEmpty()) {
                continue;
            }
            Iterator<Watcher> iterator = thisWatchers.iterator();
            while (iterator.hasNext()) {
                Watcher watcher = iterator.next();
                WatcherMode watcherMode = watcherModeManager.getWatcherMode(watcher, localPath);
                if (watcherMode.isRecursive()) {
                    if (type != EventType.NodeChildrenChanged) {
                        watchers.add(watcher);
                    }
                } else if (!pathParentIterator.atParentPath()) {
                    watchers.add(watcher);
                    if (!watcherMode.isPersistent()) {
                        iterator.remove();
                        Set<String> paths = watch2Paths.get(watcher);
                        if (paths != null) {
                            paths.remove(localPath);
                        }
                    }
                }
            }
            if (thisWatchers.isEmpty()) {
                watchTable.remove(localPath);
            }
        }
    }
    if (watchers.isEmpty()) {
        if (LOG.isTraceEnabled()) {
            ZooTrace.logTraceMessage(LOG, ZooTrace.EVENT_DELIVERY_TRACE_MASK, "No watchers for " + path);
        }
        return null;
    }
    for (Watcher w : watchers) {
        if (supress != null && supress.contains(w)) {
            continue;
        }
        w.process(e);
    }
    switch(type) {
        case NodeCreated:
            ServerMetrics.getMetrics().NODE_CREATED_WATCHER.add(watchers.size());
            break;
        case NodeDeleted:
            ServerMetrics.getMetrics().NODE_DELETED_WATCHER.add(watchers.size());
            break;
        case NodeDataChanged:
            ServerMetrics.getMetrics().NODE_CHANGED_WATCHER.add(watchers.size());
            break;
        case NodeChildrenChanged:
            ServerMetrics.getMetrics().NODE_CHILDREN_WATCHER.add(watchers.size());
            break;
        default:
            // Other types not logged.
            break;
    }
    return new WatcherOrBitSet(watchers);
}

Example 82 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class WatchManagerOptimized method triggerWatch.

@Override
public WatcherOrBitSet triggerWatch(String path, EventType type, WatcherOrBitSet suppress) {
    WatchedEvent e = new WatchedEvent(type, KeeperState.SyncConnected, path);
    BitHashSet watchers = remove(path);
    if (watchers == null) {
        return null;
    }
    int triggeredWatches = 0;
    // WatcherCleaner and iterating here
    synchronized (watchers) {
        for (Integer wBit : watchers) {
            if (suppress != null && suppress.contains(wBit)) {
                continue;
            }
            Watcher w = watcherBitIdMap.get(wBit);
            // skip dead watcher
            if (w == null || isDeadWatcher(w)) {
                continue;
            }
            w.process(e);
            triggeredWatches++;
        }
    }
    updateMetrics(type, triggeredWatches);
    return new WatcherOrBitSet(watchers);
}

Example 83 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class DisconnectedWatcherTest method testDefaultWatcherAutoResetWithChroot.

@Test
public void testDefaultWatcherAutoResetWithChroot() throws Exception {
    zk1.create("/ch1", null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    zk2 = createClient(watcher2, hostPort + "/ch1");
    zk2.getChildren("/", true);
    // this call shouldn't trigger any error or watch
    zk1.create("/youdontmatter1", null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    // this should trigger the watch
    zk1.create("/ch1/youshouldmatter1", null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    WatchedEvent e = watcher2.events.poll(TIMEOUT, TimeUnit.MILLISECONDS);
    assertNotNull(e);
    assertEquals(EventType.NodeChildrenChanged, e.getType());
    assertEquals("/", e.getPath());
    zk2.getChildren("/", true);
    stopServer();
    watcher2.waitForDisconnected(3000);
    startServer();
    watcher2.waitForConnected(3000);
    watcher1.waitForConnected(3000);
    // this should trigger the watch
    zk1.create("/ch1/youshouldmatter2", null, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
    e = watcher2.events.poll(TIMEOUT, TimeUnit.MILLISECONDS);
    assertNotNull(e);
    assertEquals(EventType.NodeChildrenChanged, e.getType());
    assertEquals("/", e.getPath());
}

Example 84 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class BaseSysTest method setUp.

@Before
public void setUp() throws Exception {
    if (!fakeMachines) {
        zk = new ZooKeeper(zkHostPort, 15000, new Watcher() {

            public void process(WatchedEvent e) {
            }
        });
        im = new InstanceManager(zk, prefix);
    }
}

Example 85 with WatchedEvent

use of org.apache.zookeeper.WatchedEvent in project zookeeper by apache.

the class ClientTest method testNonExistingOpCode.

/**
 * We create a perfectly valid 'exists' request, except that the opcode is wrong.
 * @throws Exception
 */
@Test
public void testNonExistingOpCode() throws Exception {
    final CountDownLatch clientDisconnected = new CountDownLatch(1);
    Watcher watcher = new Watcher() {

        @Override
        public synchronized void process(WatchedEvent event) {
            if (event.getState() == KeeperState.Disconnected) {
                clientDisconnected.countDown();
            }
        }
    };
    TestableZooKeeper zk = new TestableZooKeeper(hostPort, CONNECTION_TIMEOUT, watcher);
    final String path = "/m1";
    RequestHeader h = new RequestHeader();
    // This code does not exists
    h.setType(888);
    ExistsRequest request = new ExistsRequest();
    request.setPath(path);
    request.setWatch(false);
    ExistsResponse response = new ExistsResponse();
    ReplyHeader r = zk.submitRequest(h, request, response, null);
    assertEquals(r.getErr(), Code.UNIMPLEMENTED.intValue());
    // Sending a nonexisting opcode should cause the server to disconnect
    assertTrue(clientDisconnected.await(5000, TimeUnit.MILLISECONDS), "failed to disconnect");
    zk.close();
}