Make certain bits of info accessable as global variables from anywhere

mediagoblin/app.py

@@ -21,6 +21,7 @@ import mongokit
 from webob import Request, exc
 
 from mediagoblin import routing, util, models, storage, staticdirect
+from mediagoblin.globals import setup_globals
 
 
 class Error(Exception): pass
@@ -53,6 +54,15 @@ class MediaGoblinApp(object):
         # set up staticdirector tool
         self.staticdirector = staticdirector
 
+        # certain properties need to be accessed globally eg from
+        # validators, etc, which might not access to the request
+        # object.
+        setup_globals(
+            db_connection=connection,
+            database=self.db,
+            public_store=self.public_store,
+            queue_store=self.queue_store)
+
     def __call__(self, environ, start_response):
         request = Request(environ)
         path_info = request.path_info

mediagoblin/globals.py

@@ -0,0 +1,24 @@
+"""
+In some places, we need to access the database, public_store, queue_store
+"""
+
+#############################
+# General mediagoblin globals
+#############################
+
+# mongokit.Connection
+db_connection = None
+
+# mongokit.Connection
+database = None
+
+# should be the same as the 
+public_store = None
+queue_store = None
+
+
+def setup_globals(**kwargs):
+    from mediagoblin import globals as mg_globals
+
+    for key, value in kwargs.iteritems():
+        setattr(mg_globals, key, value)

mediagoblin/tests/test_globals.py

@@ -0,0 +1,29 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011 Free Software Foundation, Inc
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from mediagoblin import globals as mg_globals
+
+def test_setup_globals():
+    mg_globals.setup_globals(
+        db_connection='my favorite db_connection!',
+        database='my favorite database!',
+        public_store='my favorite public_store!',
+        queue_store='my favorite queue_store!')
+    
+    assert mg_globals.db_connection == 'my favorite db_connection!'
+    assert mg_globals.database == 'my favorite database!'
+    assert mg_globals.public_store == 'my favorite public_store!'
+    assert mg_globals.queue_store == 'my favorite queue_store!'