Merge branch 'master' of ssh://giccero.cloud.ik.bme.hu/cloud

miscellaneous/store-server/TopList.py

+#!/usr/bin/python
+import os, os.path
+from pyinotify import WatchManager, Notifier, ThreadedNotifier, EventsCodes, ProcessEvent, IN_DONT_FOLLOW, IN_CREATE, IN_MODIFY
+import pwd
+
+COUNT=5
+
+wm = WatchManager()
+mask = IN_CREATE | IN_MODIFY | IN_DONT_FOLLOW
+
+"""
+Register given file to ~/../.top dir as a symbolic link.
+"""
+def update_new(name):
+    norm = os.path.normpath(name)
+    if norm != name:
+        return # link
+    name = norm
+
+    if name.find("/.") != -1:
+        return # hidden file (or file in hidden dir)
+
+    home = pwd.getpwuid(os.stat(name).st_uid).pw_dir
+    if not name.startswith(home):
+        return # outside home
+
+    top_dir = os.path.normpath(os.path.join(home, "../.top"))
+    try:
+        os.mkdir(top_dir)
+    except OSError:
+        for f in os.listdir(top_dir):
+            if os.readlink(os.path.join(top_dir, f)) == name:
+                return # duplicate
+
+    for i in range(1, COUNT):
+        try:
+            os.rename(os.path.join(top_dir, str(i+1)), os.path.join(top_dir, str(i)))
+        except OSError as e:
+            pass
+
+    os.symlink(name, os.path.join(top_dir, str(COUNT)))
+
+"""
+Process inotify event.
+"""
+class Process(ProcessEvent):
+    def process_default(self, event):
+        if event.name:
+            update_new(os.path.join(event.path, event.name))
+
+"""
+Watch continuously file modifications in /home.
+"""
+def main():
+    notifier = Notifier(wm, Process())
+    wdd = wm.add_watch('/home', mask, rec=True)
+    while True:  # loop forever
+        try:
+            # process the queue of events as explained above
+            notifier.process_events()
+            if notifier.check_events():
+                # read notified events and enqeue them
+                notifier.read_events()
+        except KeyboardInterrupt:
+            # destroy the inotify's instance on this interrupt (stop monitoring)
+            notifier.stop()
+            break
+
+if __name__ == "__main__":
+        main()