allow wrapper to work as a daemon-restarter...

cronwrapper/__init__.py

@@ -47,6 +47,10 @@ def parse_args():
             '-L', '--no-lock',
             help='Allow multiple simultanious executions of this cron job',
             action='store_true')
+    parser.add_argument(
+            '-r', '--restart',
+            help='Restart the process if not running; exit with success if previous instance is running',
+            action='store_true')
 
 
     parser.add_argument(
@@ -189,6 +193,8 @@ def main():
             has_lock = aquire_lock(lckfile)
             if has_lock:
                 res = exec_command(args, o, e, r)
+            elif args.restart:
+                res = 0
             else:
                 e.write("CRONWRAPPER: Unable to aquire lock, previous instance still running?\n")
                 r.write("\nFalse\n")