@Override
public void action(List<String> clusters) {
for (String cluster : clusters) {
if (!tableWatchers.containsKey(cluster)) {
WatchChildren clusterWatcher =
new WatchChildren(_zk, ZookeeperPathConstants.getTablesPath(cluster))
.watch(new Tables(cluster));
tableWatchers.put(cluster, clusterWatcher);
WatchNodeExistance watchNodeExistance =
new WatchNodeExistance(_zk, ZookeeperPathConstants.getSafemodePath(cluster))
.watch(new SafeExistance(cluster));
safeModeWatchers.put(cluster, watchNodeExistance);
}
}
List<String> clustersToCloseAndRemove = new ArrayList<String>(clusters);
clustersToCloseAndRemove.removeAll(tableWatchers.keySet());
for (String cluster : clustersToCloseAndRemove) {
WatchChildren watcher = tableWatchers.remove(cluster);
if (watcher == null) {
LOG.error("Error watcher is null [" + cluster + "] ");
} else {
watcher.close();
}
}
}
public void close() {
_running.set(false);
clusterWatch.close();
}