Reporting: update non-ORM bits to know about separate database

There is a little bit of code in the reporting web interface that
uses raw SQL rather than the django ORM.  This bypassed the database
router functionality (since there is no model to bind to).  Django
supports keeping track of multiple connections in the raw SQL interface,
so this commit does the refactoring necessary to support the multiple
databases.

1 files changed, 12 insertions, 5 deletions

diff --git a/src/lib/Bcfg2/DBSettings.py b/src/lib/Bcfg2/DBSettings.py
index e45807094..3b2edd849 100644
--- a/src/lib/Bcfg2/DBSettings.py
+++ b/src/lib/Bcfg2/DBSettings.py
@@ -154,6 +154,17 @@ def migrate_databases(**kwargs):
                                             **kwargs)
 
 
+def get_db_label(application):
+    """ Get the name of the database for a given Django "application".  The
+    rule is that if a database with the same name as the application exists,
+    use it.  Otherwise use the default. Returns a string suitible for use as a
+    key in the Django database settings dict """
+    if application in settings['DATABASES']:
+        return application
+
+    return 'default'
+
+
 class PerApplicationRouter(object):
     """ Django database router for redirecting different applications to their
     own database """
@@ -161,11 +172,7 @@ class PerApplicationRouter(object):
     def _db_per_app(self, model, **hints):
         """ If a database with the same name as the application exists, use it.
         Otherwise use the default """
-        app = model._meta.app_label
-        if app in settings['DATABASES']:
-            return app
-
-        return 'default'
+        return get_db_label(model._meta.app_label)
 
     def db_for_read(self, model, **hints):
         """ Called when Django wants to find out what database to read from """