Delete old sessions on start

ssoauth/apps.py

@@ -6,6 +6,7 @@ from django.db.utils import OperationalError, ProgrammingError
 from django.db.models import Q
 from django.contrib.auth import get_user_model
 from django.utils import timezone
+from django.core.management import call_command
 from . import app_settings
 from . import logger
 from . import sso_utils
@@ -31,10 +32,16 @@ class SSOAuthConfig(AppConfig):
         # default groups
         post_migrate.connect(self.post_migrate_callback, sender=self)
         # cleanup
+        warnings = list()
         try:
             self.cleanup_users()
         except (OperationalError, ProgrammingError,) as e:
-            return [Warning("ssoauth could not cleanup users. Not migrated yet?")]
+            warnings.append(Warning("ssoauth could not cleanup users. Not migrated yet?"))
+        try:
+            self.cleanup_sessions()
+        except Exception as e:
+            warnings.append(Warning("ssoauth could not cleanup sessions. {}".format(e)))
+        return warnings or None
 
     @staticmethod
     def post_migrate_callback(*args, **kwargs):
@@ -54,3 +61,6 @@ class SSOAuthConfig(AppConfig):
             user.is_staff = False
             user.save()
 
+    def cleanup_sessions(self):
+        call_command("clearsessions")
+