/** Process all events for keys queued to the watcher */
private static void forwardToItopic(WatchEvent.Kind<Path> kind, Path dir) {
boolean isDir = Files.isDirectory(dir);
if (kind == ENTRY_CREATE) {
if (!isDir) {
Action act = new Action("add_file", Folder.getInternalPath(dir));
// Folder.getFileFromDiskToWinSafe(act.getPath());
Folder.loadFileFromFSToInternal(dir);
topic.publish(act);
} else {
if (Folder.isEmptyFSFolder(dir)) {
Folder.createEmptyFolderInInternal(dir);
topic.publish(new Action("create_empty_folder", Folder.getInternalPath(dir)));
} else {
Folder.loadFolderFromFSToInternal(dir);
topic.publish(new Action("create_folder", Folder.getInternalPath(dir)));
}
}
} else if (kind == ENTRY_DELETE) {
// todo
Folder.deleteFromInternal(dir);
topic.publish(new Action("delete_entry", Folder.getInternalPath(dir)));
} else if (kind == ENTRY_MODIFY) {
// todo
if (!isDir) {
Folder.loadFileFromFSToInternal(dir);
topic.publish(new Action("edit_file", Folder.getInternalPath(dir)));
} else {
if (Folder.isEmptyFSFolder(dir)) {
Folder.createEmptyFolderInInternal(dir);
topic.publish(new Action("create_empty_folder", Folder.getInternalPath(dir)));
} else {
Folder.loadFolderFromFSToInternal(dir);
topic.publish(new Action("edit_folder", Folder.getInternalPath(dir)));
}
}
} else {
// TODO
System.out.println("[forwardToItopic] Unexpected Event - kind=" + kind + "dir=" + dir);
}
}
// void processEvents() {
public void run() {
System.out.println("WatchDir Thread INFO: priority=" + Thread.currentThread().getPriority());
for (; ; ) {
// wait for key to be signalled
System.out.println("WatchDir INFO: restarting loop...acquiring new key");
WatchKey key;
try {
key = watcher.take();
} catch (InterruptedException x) {
return;
}
Path dir = keys.get(key);
if (dir == null) {
System.err.println("WatchKey not recognized!!");
continue;
}
for (WatchEvent<?> event : key.pollEvents()) {
WatchEvent.Kind kind = event.kind();
// TBD - provide example of how OVERFLOW event is handled
if (kind == OVERFLOW) {
System.out.println("Encountered OVERFLOW Event - " + event);
continue;
}
// Context for directory entry event is the file name of entry
WatchEvent<Path> ev = cast(event);
Path name = ev.context();
Path child = dir.resolve(name);
// print out event
System.out.format("[WatchDir] %s: %s\n", event.kind().name(), child);
// if directory is created, and watching recursively, then
// register it and its sub-directories
if (recursive && (kind == ENTRY_CREATE)) {
try {
if (Files.isDirectory(child, NOFOLLOW_LINKS)) {
registerAll(child);
}
} catch (IOException x) {
// ignore to keep sample readbale
}
}
long t = System.currentTimeMillis();
if (!Folder.dontWatch.contains(Folder.getInternalPath(child))) {
Thread.currentThread().setPriority(Thread.NORM_PRIORITY);
System.out.println(
"WatchDir#"
+ key
+ " INFO: path="
+ child
+ ", internal="
+ Folder.getInternalPath(child)
+ " is NOT in don't watch list. Forwarding it to other peers. @"
+ Main.timeToString(t)); // DEBUG
forwardToItopic(kind, child);
} else {
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
System.out.println(
"WatchDir#"
+ key
+ " INFO: path="
+ child
+ ", internal="
+ Folder.getInternalPath(child)
+ " IS in the don't watch list. NOT forwarding. @"
+ Main.timeToString(t)); // DEBUG
// try{
// Thread.sleep(minDelayBtwnWatchEvents);
// } catch(InterruptedException ex) {
// System.err.println("Exception:"+ex+" while trying to sleep WatchDir thread");
// ex.printStackTrace();
// }
}
}
// reset key and remove from set if directory no longer accessible
boolean valid = key.reset();
if (!valid) {
keys.remove(key);
// all directories are inaccessible
if (keys.isEmpty()) {
break;
}
}
}
}