Examples of org.apache.zookeeper_voltpatches.WatchedEvent

Package org.apache.zookeeper_voltpatches

Examples of org.apache.zookeeper_voltpatches.WatchedEvent

org.apache.zookeeper_voltpatches.WatchedEvent
A WatchedEvent represents a change on the ZooKeeper that a Watcher is able to respond to. The WatchedEvent includes exactly what happened, the current state of the ZooKeeper, and the path of the znode that was involved in the event.

        List<String> requests = m_zk.getChildren(VoltZK.request_truncation_snapshot, m_currentTruncationWatcher);
        if (!requests.isEmpty()) {
            loggingLog.info("A truncation request node already existed, processing truncation request event");
            m_currentTruncationWatcher.cancel();
            // TRAIL [TruncSnap:3] fake a node created event (req ZK node already there)
            processTruncationRequestEvent(new WatchedEvent(
                    EventType.NodeChildrenChanged,
                    KeeperState.SyncConnected,
                    VoltZK.request_truncation_snapshot));
        }
    }

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    void userSnapshotRequestExistenceCheck(boolean deleteExistingRequest) throws Exception {
        if (deleteExistingRequest) {
            m_zk.delete(VoltZK.user_snapshot_request, -1, null, null);
        }
        if (m_zk.exists(VoltZK.user_snapshot_request, m_userSnapshotRequestExistenceWatcher) != null) {
            processUserSnapshotRequestEvent(new WatchedEvent(
                    EventType.NodeCreated,
                    KeeperState.SyncConnected,
                    VoltZK.user_snapshot_request));
        }
    }

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            }
        });


        if (exists != null) {
            processUserSnapshotRequestResponse(
                    new WatchedEvent(
                        EventType.NodeCreated,
                        KeeperState.SyncConnected,
                        responseNode),
                        clientHandle,
                        c,

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    public void setWatches(long relativeZxid, List<String> dataWatches,
            List<String> existWatches, List<String> childWatches,
            Watcher watcher) {
        for (String path : dataWatches) {
            DataNode node = getNode(path);
            WatchedEvent e = null;
            if (node == null) {
                e = new WatchedEvent(EventType.NodeDeleted,
                        KeeperState.SyncConnected, path);
            } else if (node.stat.getCzxid() > relativeZxid) {
                e = new WatchedEvent(EventType.NodeCreated,
                        KeeperState.SyncConnected, path);
            } else if (node.stat.getMzxid() > relativeZxid) {
                e = new WatchedEvent(EventType.NodeDataChanged,
                        KeeperState.SyncConnected, path);
            }
            if (e != null) {
                watcher.process(e);
            } else {
                this.dataWatches.addWatch(path, watcher);
            }
        }
        for (String path : existWatches) {
            DataNode node = getNode(path);
            WatchedEvent e = null;
            if (node == null) {
                // This is the case when the watch was registered
            } else if (node.stat.getMzxid() > relativeZxid) {
                e = new WatchedEvent(EventType.NodeDataChanged,
                        KeeperState.SyncConnected, path);
            } else {
                e = new WatchedEvent(EventType.NodeCreated,
                        KeeperState.SyncConnected, path);
            }
            if (e != null) {
                watcher.process(e);
            } else {
                this.dataWatches.addWatch(path, watcher);
            }
        }
        for (String path : childWatches) {
            DataNode node = getNode(path);
            WatchedEvent e = null;
            if (node == null) {
                e = new WatchedEvent(EventType.NodeDeleted,
                        KeeperState.SyncConnected, path);
            } else if (node.stat.getPzxid() > relativeZxid) {
                e = new WatchedEvent(EventType.NodeChildrenChanged,
                        KeeperState.SyncConnected, path);
            }
            if (e != null) {
                watcher.process(e);
            } else {

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    public Set<Watcher> triggerWatch(String path, EventType type) {
        return triggerWatch(path, type, null);
    }


    public Set<Watcher> triggerWatch(String path, EventType type, Set<Watcher> supress) {
        WatchedEvent e = new WatchedEvent(type,
                KeeperState.SyncConnected, path);
        HashSet<Watcher> watchers;
        synchronized (this) {
            watchers = watchTable.remove(path);
            if (watchers == null || watchers.isEmpty()) {

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Related Classes of org.apache.zookeeper_voltpatches.WatchedEvent

org.apache.zookeeper_voltpatches.proto.WatcherEvent

org.apache.zookeeper_voltpatches.server.DataTree

org.apache.zookeeper_voltpatches.server.WatchManager

org.voltdb.SnapshotDaemon

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