/** Make sure the resources associated with this directory and pathPrefixSet are up-to-date. */
public void refreshResources() throws IOException {
if (isWatchServiceActive()) {
refresh();
} else {
fullRefresh();
}
}
private void refresh() throws IOException {
while (true) {
WatchKey watchKey = watchService.poll();
if (watchKey == null) {
return;
}
Path parentDir = (Path) watchKey.watchable();
for (WatchEvent<?> watchEvent : watchKey.pollEvents()) {
WatchEvent.Kind<?> eventKind = watchEvent.kind();
if (eventKind == OVERFLOW) {
fullRefresh();
return;
}
Path child = parentDir.resolve((Path) watchEvent.context());
if (eventKind == ENTRY_CREATE) {
onNewPath(child);
} else if (eventKind == ENTRY_DELETE) {
onRemovedPath(child);
}
}
watchKey.reset();
}
}