def post(self,environment_name,step_name,exception_name):
session_id = get_session_id(session, request)
dao = UseCaseDAO(session_id)
uc,ucContribs = dao.from_json(request)
dao.generate_obstacle_from_usecase(uc,environment_name,step_name,exception_name)
dao.close()
resp_dict = {'message': 'Obstacle generated from exception'}
resp = make_response(json_serialize(resp_dict), OK)
resp.contenttype = 'application/json'
return resp
