use a dict for backend config. Load it on aws.

lms/djangoapps/instructor/staff_grading_service.py

@@ -45,14 +45,14 @@ class StaffGradingService(object):
     """
     Interface to staff grading backend.
     """
-    def __init__(self, url, username, password):
-        self.username = username
-        self.password = password
-        self.url = url
+    def __init__(self, config):
+        self.username = config['username']
+        self.password = config['password']
+        self.url = config['url']
 
-        self.login_url = url + '/login/'
-        self.get_next_url = url + '/get_next_submission/'
-        self.save_grade_url = url + '/save_grade/'
+        self.login_url = self.url + '/login/'
+        self.get_next_url = self.url + '/get_next_submission/'
+        self.save_grade_url = self.url + '/save_grade/'
 
         # TODO: add auth
         self.session = requests.session()
@@ -140,10 +140,7 @@ class StaffGradingService(object):
 
         return r.text
 
-_service = StaffGradingService(settings.STAFF_GRADING_BACKEND_URL,
-                               settings.STAFF_GRADING_BACKEND_USERNAME,
-                               settings.STAFF_GRADING_BACKEND_PASSWORD,
-                               )
+_service = StaffGradingService(settings.STAFF_GRADING_INTERFACE)
 #_service = MockStaffGradingService()
 
 def _err_response(msg):

lms/envs/aws.py

@@ -76,5 +76,8 @@ DATABASES = AUTH_TOKENS['DATABASES']
 
 XQUEUE_INTERFACE = AUTH_TOKENS['XQUEUE_INTERFACE']
 
+STAFF_GRADING_BACKEND = AUTH_TOKENS.get('STAFF_GRADING_INTERFACE')
+
+
 PEARSON_TEST_USER = "pearsontest"
 PEARSON_TEST_PASSWORD = AUTH_TOKENS.get("PEARSON_TEST_PASSWORD")

lms/envs/common.py

@@ -324,9 +324,7 @@ WIKI_LINK_DEFAULT_LEVEL = 2
 
 ################################# Staff grading config  #####################
 
-STAFF_GRADING_BACKEND_URL = None
-STAFF_GRADING_BACKEND_USERNAME = None
-STAFF_GRADING_BACKEND_PASSWORD = None
+STAFF_GRADING_INTERFACE = None
 
 ################################# Jasmine ###################################
 JASMINE_TEST_DIRECTORY = PROJECT_ROOT + '/static/coffee'

lms/envs/dev.py

@@ -104,10 +104,11 @@ COMMENTS_SERVICE_KEY = "PUT_YOUR_API_KEY_HERE"
 
 ################################# Staff grading config  #####################
 
-STAFF_GRADING_BACKEND_URL = "http://127.0.0.1:3033/staff_grading"
-STAFF_GRADING_BACKEND_USERNAME = "lms"
-STAFF_GRADING_BACKEND_PASSWORD = "abcd"
-
+STAFF_GRADING_INTERFACE = {
+    'url': 'http://127.0.0.1:3033/staff_grading',
+    'username': 'lms',
+    'password': 'abcd',
+    }
 
 ################################ LMS Migration #################################
 MITX_FEATURES['ENABLE_LMS_MIGRATION'] = True