Log but don't deal with problems refreshing tokens.

allianceauth/authentication/tasks.py

@@ -1,6 +1,6 @@
 import logging
 
-from esi.errors import TokenExpiredError, TokenInvalidError
+from esi.errors import TokenExpiredError, TokenInvalidError, IncompleteResponseError
 from esi.models import Token
 from celery import shared_task
 
@@ -20,13 +20,19 @@ def check_character_ownership(owner_hash):
             except (TokenExpiredError, TokenInvalidError):
                 t.delete()
                 continue
-
-            if t.character_owner_hash == old_hash:
+            except (KeyError, IncompleteResponseError):
+                # We can't validate the hash hasn't changed but also can't assume it has. Abort for now.
+                logger.warning("Failed to validate owner hash of {0} due to problems contacting SSO servers.".format(
+                    tokens[0].character_name))
                 break
-            else:
-                logger.info('Character %s has changed ownership. Revoking %s tokens.' % (t.character_name, tokens.count()))
+
+            if not t.character_owner_hash == old_hash:
+                logger.info(
+                    'Character %s has changed ownership. Revoking %s tokens.' % (t.character_name, tokens.count()))
                 tokens.delete()
-    else:
+            break
+
+    if not Token.objects.filter(character_owner_hash=owner_hash).exists():
         logger.info('No tokens found with owner hash %s. Revoking ownership.' % owner_hash)
         CharacterOwnership.objects.filter(owner_hash=owner_hash).delete()