VPP-960: Python API add more information in exception for invalid arguments to API...

Change-Id: I266eef8419fd98b9b900573ac9b032a62600ab86
Signed-off-by: Ole Troan <ot@cisco.com>

diff --git a/src/vpp-api/python/vpp_papi.py b/src/vpp-api/python/vpp_papi.py
index 55dda10..14f367c 100644 (file)
--- a/src/vpp-api/python/vpp_papi.py
+++ b/src/vpp-api/python/vpp_papi.py
@@ -246,7 +246,10 @@ class VPP():
 
         for k in kwargs:
             if k not in msgdef['args']:
-                raise ValueError(1, 'Invalid field-name in message call ' + k)
+                raise ValueError(1,'Non existing argument [' + k + ']' + \
+                                 ' used in call to: ' + \
+                                 self.id_names[kwargs['_vl_msg_id']] + '()' )
+
 
         for k, v in vpp_iterator(msgdef['args']):
             off += size