Examples of org.apache.zookeeper_voltpatches.server.DataNode

Package org.apache.zookeeper_voltpatches.server

Examples of org.apache.zookeeper_voltpatches.server.DataNode

org.apache.zookeeper_voltpatches.server.DataNode
This class contains the data for a node in the data tree.
A data node contains a reference to its parent, a byte array as its data, an array of ACLs, a stat object, and a set of its children's paths.

    }


    @SuppressWarnings("unchecked")
    public List<ACL> getACL(String path, Stat stat)
            throws KeeperException.NoNodeException {
        DataNode n = nodes.get(path);
        if (n == null) {
            throw new KeeperException.NoNodeException();
        }
        synchronized (n) {
            n.copyStat(stat);
            return new ArrayList<ACL>(convertLong(n.acl));
        }
    }

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     *            the long bytes
     * @param count
     *            the int count
     */
    private void getCounts(String path, Counts counts) {
        DataNode node = getNode(path);
        if (node == null) {
            return;
        }
        String[] children = null;
        int len = 0;
        synchronized (node) {
            Set<String> childs = node.getChildren();
            if (childs != null) {
                children = childs.toArray(new String[childs.size()]);
            }
            len = (node.data == null ? 0 : node.data.length);
        }

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        getCounts(path, c);
        StatsTrack strack = new StatsTrack();
        strack.setBytes(c.bytes);
        strack.setCount(c.count);
        String statPath = Quotas.quotaZookeeper + path + "/" + Quotas.statNode;
        DataNode node = getNode(statPath);
        // it should exist
        if (node == null) {
            LOG.warn("Missing quota stat node " + statPath);
            return;
        }

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     * this method traverses the quota path and update the path trie and sets
     *
     * @param path
     */
    private void traverseNode(String path) {
        DataNode node = getNode(path);
        String children[] = null;
        synchronized (node) {
            Set<String> childs = node.getChildren();
            if (childs != null) {
                children = childs.toArray(new String[childs.size()]);
            }
        }
        if (children != null) {

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    /**
     * this method sets up the path trie and sets up stats for quota nodes
     */
    private void setupQuota() {
        String quotaPath = Quotas.quotaZookeeper;
        DataNode node = getNode(quotaPath);
        if (node == null) {
            return;
        }
        traverseNode(quotaPath);
    }

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     * @throws IOException
     * @throws InterruptedException
     */
    void serializeNode(OutputArchive oa, StringBuilder path) throws IOException {
        String pathString = path.toString();
        DataNode node = getNode(pathString);
        if (node == null) {
            return;
        }
        String children[] = null;
        synchronized (node) {
            scount++;
            oa.writeString(pathString, "path");
            oa.writeRecord(node, "node");
            Set<String> childs = node.getChildren();
            if (childs != null) {
                children = childs.toArray(new String[childs.size()]);
            }
        }
        path.append('/');

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    public void deserialize(InputArchive ia, String tag) throws IOException {
        deserializeList(longKeyMap, ia);
        nodes.clear();
        String path = ia.readString("path");
        while (!path.equals("/")) {
            DataNode node = new DataNode();
            ia.readRecord(node, "node");
            nodes.put(path, node);
            int lastSlash = path.lastIndexOf('/');
            if (lastSlash == -1) {
                root = node;

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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) {

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Related Classes of org.apache.zookeeper_voltpatches.server.DataNode

org.apache.zookeeper_voltpatches.data.StatPersisted

org.apache.zookeeper_voltpatches.server.DataTree

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