CC-5990, CC-5991 - Python cleanup, removed need for /usr/lib/airtime

python_apps/media-monitor/mm2/media/monitor/owners.py

@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+from log import Loggable
+
+class Owner(Loggable):
+    def __init__(self):
+        # hash: 'filepath' => owner_id
+        self.owners = {}
+
+    def get_owner(self,f):
+        """ Get the owner id of the file 'f' """
+        o = self.owners[f] if f in self.owners else -1
+        self.logger.info("Received owner for %s. Owner: %s" % (f, o))
+        return o
+
+
+    def add_file_owner(self,f,owner):
+        """ Associate file f with owner. If owner is -1 then do we will not record
+        it because -1 means there is no owner. Returns True if f is being stored
+        after the function. False otherwise.  """
+        if owner == -1: return False
+        if f in self.owners:
+            if owner != self.owners[f]: # check for fishiness
+                self.logger.info("Warning ownership of file '%s' changed from '%d' to '%d'"
+                        % (f, self.owners[f], owner))
+            else: return True
+        self.owners[f] = owner
+        return True
+
+    def has_owner(self,f):
+        """ True if f is owned by somebody. False otherwise. """
+        return f in self.owners
+
+    def remove_file_owner(self,f):
+        """ Try and delete any association made with file f. Returns true if
+        the the association was actually deleted. False otherwise. """
+        if f in self.owners:
+            del self.owners[f]
+            return True
+        else: return False
+