From fdf8c9fb4ec9d3da4f33c14356359bbbfd6b68ce Mon Sep 17 00:00:00 2001
From: Rudi Grinberg <rudi.grinberg@gmail.com>
Date: Mon, 19 Nov 2012 20:13:19 -0500
Subject: [PATCH] refactored EventRegistry to play nice with saas.

---
 .../media-monitor2/media/monitor/events.py    | 32 +++++++------------
 .../media-monitor2/media/monitor/listeners.py |  6 ++--
 .../media/saas/airtimeinstance.py             |  6 ++++
 3 files changed, 21 insertions(+), 23 deletions(-)

diff --git a/python_apps/media-monitor2/media/monitor/events.py b/python_apps/media-monitor2/media/monitor/events.py
index fe7bc47f6..4914827c5 100644
--- a/python_apps/media-monitor2/media/monitor/events.py
+++ b/python_apps/media-monitor2/media/monitor/events.py
@@ -21,28 +21,20 @@ class PathChannel(object):
 # TODO : Move this to it's file. Also possible unsingleton and use it as a
 # simple module just like m.m.owners
 class EventRegistry(object):
-    """
-    This class's main use is to keep track all events with a cookie attribute.
-    This is done mainly because some events must be 'morphed' into other events
-    because we later detect that they are move events instead of delete events.
-    """
-    registry = {}
-    @staticmethod
-    def register(evt): EventRegistry.registry[evt.cookie] = evt
-    @staticmethod
-    def unregister(evt): del EventRegistry.registry[evt.cookie]
-    @staticmethod
-    def registered(evt): return evt.cookie in EventRegistry.registry
-    @staticmethod
-    def matching(evt):
-        event = EventRegistry.registry[evt.cookie]
+    """ This class's main use is to keep track all events with a cookie
+    attribute. This is done mainly because some events must be 'morphed'
+    into other events because we later detect that they are move events
+    instead of delete events. """
+    def __init__(self):
+        self.registry = {}
+    def register(self,evt): self.registry[evt.cookie] = evt
+    def unregister(self,evt): del self.registry[evt.cookie]
+    def registered(self,evt): return evt.cookie in self.registry
+    def matching(self,evt):
+        event = self.registry[evt.cookie]
         # Want to disallow accessing the same event twice
-        EventRegistry.unregister(event)
+        self.unregister(event)
         return event
-    def __init__(self,*args,**kwargs):
-        raise Exception("You can instantiate this class. Must only use class \
-                         methods")
-
 
 class EventProxy(Loggable):
     """
diff --git a/python_apps/media-monitor2/media/monitor/listeners.py b/python_apps/media-monitor2/media/monitor/listeners.py
index c268319e8..5757b9203 100644
--- a/python_apps/media-monitor2/media/monitor/listeners.py
+++ b/python_apps/media-monitor2/media/monitor/listeners.py
@@ -73,11 +73,11 @@ class StoreWatchListener(BaseListener, Loggable, pyinotify.ProcessEvent):
     def process_IN_CLOSE_WRITE(self, event):
         self.process_create(event)
     def process_IN_MOVED_TO(self, event):
-        if EventRegistry.registered(event):
+        if user().event_registry.registered(event):
             # We need this trick because we don't how to "expand" dir events
             # into file events until we know for sure if we deleted or moved
             morph = MoveDir(event) if event.dir else MoveFile(event)
-            EventRegistry.matching(event).morph_into(morph)
+            user().event_registry.matching(event).morph_into(morph)
         else: self.process_create(event)
     def process_IN_MOVED_FROM(self, event):
         # Is either delete dir or delete file
@@ -85,7 +85,7 @@ class StoreWatchListener(BaseListener, Loggable, pyinotify.ProcessEvent):
         # evt can be none whenever event points that a file that would be
         # ignored by @IncludeOnly
         if hasattr(event,'cookie') and (evt != None):
-            EventRegistry.register(evt)
+            user().event_registry.register(evt)
     def process_IN_DELETE(self,event): self.process_delete(event)
     def process_IN_MOVE_SELF(self, event):
         if '-unknown-path' in event.pathname:
diff --git a/python_apps/media-monitor2/media/saas/airtimeinstance.py b/python_apps/media-monitor2/media/saas/airtimeinstance.py
index 6293fe61d..67e7f8beb 100644
--- a/python_apps/media-monitor2/media/saas/airtimeinstance.py
+++ b/python_apps/media-monitor2/media/saas/airtimeinstance.py
@@ -5,6 +5,7 @@ from media.monitor.exceptions import NoConfigFile
 from media.monitor.pure import LazyProperty
 from media.monitor.config import MMConfig
 from media.monitor.owners import Owner
+from media.monitor.events import EventRegistry
 from media.monitor.listeners import FileMediator
 from api_clients.api_client import AirtimeApiClient
 
@@ -52,6 +53,11 @@ class AirtimeInstance(object):
     @LazyProperty
     def owner(self):
         return Owner()
+
+    @LazyProperty
+    def event_registry(self):
+        return EventRegistry()
+
     @LazyProperty
     def file_mediator(self):
         return FileMediator()