Catch InvalidKeyError in UserTagsEventContextMiddleware.

LMS-11189

common/djangoapps/user_api/middleware.py

@@ -2,11 +2,14 @@
 Middleware for user api.
 Adds user's tags to tracking event context.
 """
-from track.contexts import COURSE_REGEX
+
 from eventtracking import tracker
-from user_api.models import UserCourseTag
+from opaque_keys import InvalidKeyError
 from opaque_keys.edx.locations import SlashSeparatedCourseKey
 
+from track.contexts import COURSE_REGEX
+from user_api.models import UserCourseTag
+
 
 class UserTagsEventContextMiddleware(object):
     """Middleware that adds a user's tags to tracking event context."""
@@ -20,7 +23,11 @@ class UserTagsEventContextMiddleware(object):
         course_id = None
         if match:
             course_id = match.group('course_id')
-            course_key = SlashSeparatedCourseKey.from_deprecated_string(course_id)
+            try:
+                course_key = SlashSeparatedCourseKey.from_deprecated_string(course_id)
+            except InvalidKeyError:
+                course_id = None
+                course_key = None
 
         context = {}
 

common/djangoapps/user_api/tests/test_middleware.py

@@ -92,6 +92,13 @@ class TagsMiddlewareTest(TestCase):
 
         self.assertContextSetTo({})
 
+    def test_invalid_course_id(self):
+        self.request = self.request_factory.get('/courses/edX/101/')
+        self.request.user = self.user
+
+        self.process_request()
+        self.assertContextSetTo({})
+
     def test_anonymous_user(self):
         self.request.user = AnonymousUserFactory()