From 2d2e8a63fbcf81a37bbfe234064474364b3b96cd Mon Sep 17 00:00:00 2001
From: Emmanuel Garette <egarette@cadoles.com>
Date: Mon, 16 Mar 2020 15:38:41 +0100
Subject: [PATCH] add new argument in config.new()

---
 tiramisu/api.py    | 8 +++++---
 tiramisu/config.py | 9 ++++++---
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/tiramisu/api.py b/tiramisu/api.py
index a6e5dd1..366d689 100644
--- a/tiramisu/api.py
+++ b/tiramisu/api.py
@@ -1533,7 +1533,8 @@ class _TiramisuContextMixConfig(_TiramisuContextGroupConfig, _TiramisuContextCon
     async def new(self,
                   session_id,
                   storage=None,
-                  type='config'):
+                  type='config',
+                  new=None):
         """Create and add a new config"""
         config = self._config_bag.context
         if storage is None:
@@ -1543,9 +1544,10 @@ class _TiramisuContextMixConfig(_TiramisuContextGroupConfig, _TiramisuContextCon
             new_config = await config.new_config(connection,
                                                  session_id=session_id,
                                                  storage=storage,
-                                                 type_=type)
+                                                 type_=type,
+                                                 new=new)
         return await self._return_config(new_config,
-                                         new_config._storage)
+                                         storage)
 
     async def pop(self,
                   session_id=None,
diff --git a/tiramisu/config.py b/tiramisu/config.py
index 83421d4..8a8ed0d 100644
--- a/tiramisu/config.py
+++ b/tiramisu/config.py
@@ -1175,12 +1175,15 @@ class KernelMixConfig(KernelGroupConfig):
                          connection,
                          session_id,
                          type_='config',
-                         storage=None):
-        if session_id in [child.impl_getname() for child in self._impl_children]:
+                         storage=None,
+                         new=None,
+                         ):
+        if new is None:
+            new = session_id not in await list_sessions()
+        if new and session_id in [child.impl_getname() for child in self._impl_children]:
             raise ConflictError(_('config name must be uniq in '
                                   'groupconfig for {0}').format(session_id))
         assert type_ in ('config', 'metaconfig', 'mixconfig'), _('unknown type {}').format(type_)
-        new = session_id not in await list_sessions()
         if type_ == 'config':
             config = await KernelConfig(self._impl_descr,
                                         session_id=session_id,