users: replaced extraction of user_ids with more efficient method.

- by default it extracts only active accounts.

rhodecode/apps/repo_group/views/repo_group_permissions.py

@@ -101,7 +101,7 b' class RepoGroupPermissionsView(RepoGroup'
         affected_user_ids = None
         if changes.get('default_user_changed', False):
             # if we change the default user, we need to flush everyone permissions
-            affected_user_ids = [x.user_id for x in User.get_all()]
+            affected_user_ids = User.get_all_user_ids()
         PermissionModel().flush_user_permission_caches(
             changes, affected_user_ids=affected_user_ids)
 

rhodecode/apps/repository/views/repo_permissions.py

@@ -94,7 +94,7 b' class RepoSettingsPermissionsView(RepoAp'
         affected_user_ids = None
         if changes.get('default_user_changed', False):
             # if we change the default user, we need to flush everyone permissions
-            affected_user_ids = [x.user_id for x in User.get_all()]
+            affected_user_ids = User.get_all_user_ids()
         PermissionModel().flush_user_permission_caches(
             changes, affected_user_ids=affected_user_ids)
 
@@ -126,7 +126,7 b' class RepoSettingsPermissionsView(RepoAp'
                 self.db_repo_name), category='error')
 
         # NOTE(dan): we change repo private mode we need to notify all USERS
-        affected_user_ids = [x.user_id for x in User.get_all()]
+        affected_user_ids = User.get_all_user_ids()
         PermissionModel().trigger_permission_flush(affected_user_ids)
 
         return {

rhodecode/model/db.py

@@ -1025,6 +1025,17 b' class User(Base, BaseModel):'
         return qry.all()
 
     @classmethod
+    def get_all_user_ids(cls, only_active=True):
+        """
+        Returns all users IDs
+        """
+        qry = Session().query(User.user_id)
+
+        if only_active:
+            qry = qry.filter(User.active == true())
+        return [x.user_id for x in qry]
+
+    @classmethod
     def get_default_user(cls, cache=False, refresh=False):
         user = User.get_by_username(User.DEFAULT_USER, cache=cache)
         if user is None: