Do not accept enterprise licenses in some cases.

This commit makes it so that enterprise licenses are rejected in HA
environments if there is no active MongoDB server.

Additionally, it suppresses trying to connect to MongoDB in cases where
it is not present or meaningful.

awx/api/views.py

@@ -235,6 +235,19 @@ class ApiV1ConfigView(APIView):
             # FIX: Log
             return Response({"error": "Invalid License"}, status=status.HTTP_400_BAD_REQUEST)
 
+        # Sanity check: If this license includes system tracking, make
+        # sure that we have a valid MongoDB to point to, and complain if
+        # we do not.
+        if (license_data['features']['system_tracking'] and
+                                    settings.MONGO_HOST == NotImplemented):
+            return Response({
+                'error': 'This license supports system tracking, which '
+                         'requires MongoDB to be installed. Since you are '
+                         'running in an HA environment, you will need to '
+                         'provide a MongoDB instance. Please re-run the '
+                         'installer prior to installing this license.'
+            }, status=status.HTTP_400_BAD_REQUEST)
+
         # If the license is valid, write it to disk.
         if license_data['valid_key']:
             fh = open(TASK_FILE, "w")

awx/fact/__init__.py

@@ -14,7 +14,19 @@ logger = logging.getLogger('awx.fact')
 
 # Connect to Mongo
 try:
-    connect(settings.MONGO_DB, tz_aware=settings.USE_TZ)
+    # Sanity check: If we have intentionally invalid settings, then we
+    # know we cannot connect.
+    if settings.MONGO_HOST == NotImplemented:
+        raise ConnectionError
+
+    # Attempt to connect to the MongoDB database.
+    connect(settings.MONGO_DB,
+        host=settings.MONGO_HOST,
+        port=int(settings.MONGO_PORT),
+        username=settings.MONGO_USERNAME,
+        password=settings.MONGO_PASSWORD,
+        tz_aware=settings.USE_TZ,
+    )
     register_key_transform(get_db())
 except ConnectionError:
     logger.warn('Failed to establish connect to MongoDB "%s"' % (settings.MONGO_DB))

awx/settings/defaults.py

@@ -5,8 +5,6 @@ import os
 import sys
 from datetime import timedelta
 
-MONGO_DB = 'system_tracking'
-
 # Update this module's local settings from the global settings module.
 from django.conf import global_settings
 this_module = sys.modules[__name__]

awx/settings/development.py

@@ -13,6 +13,11 @@ from split_settings.tools import optional, include
 # Load default settings.
 from defaults import *  # NOQA
 
+
+MONGO_HOST = '127.0.0.1'
+MONGO_PORT = 27017
+MONGO_USERNAME = None
+MONGO_PASSWORD = None
 MONGO_DB = 'system_tracking_dev'
 
 # Disable capturing all SQL queries when running celeryd in development.