/**
* update the quota for the given path
*
* @param path the path to be used
*/
private void updateQuotaForPath(String path) {
Counts c = new Counts();
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;
}
synchronized (node) {
node.data = strack.toString().getBytes();
}
}
/**
* this method gets the count of nodes and the bytes under a subtree
*
* @param path the path to be used
* @param bytes 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;
synchronized (node) {
children = node.children.toArray(new String[node.children.size()]);
}
// add itself
counts.count += 1;
counts.bytes += (long) node.data.length;
if (children.length == 0) {
return;
}
for (String child : children) {
getCounts(path + "/" + child, counts);
}
}