def handle_post_log(self, handle, connection, match, data, hdr):
        """ Create log session
        """
        status = calvinresponse.OK
        actors = []
        events = []

        if data and 'user_id' in data:
            user_id = data['user_id']
        else:
            user_id = calvinuuid.uuid("TRACE")

        if user_id not in self.loggers:
            if 'actors' != data and data['actors']:
                actors = data['actors']
            if 'events' in data:
                events = []
                for event in data['events']:
                    if event == 'actor_firing':
                        events.append(self.LOG_ACTOR_FIRING)
                    elif event == 'action_result':
                        events.append(self.LOG_ACTION_RESULT)
                    elif event == 'actor_new':
                        events.append(self.LOG_ACTOR_NEW)
                    elif event == 'actor_destroy':
                        events.append(self.LOG_ACTOR_DESTROY)
                    elif event == 'actor_migrate':
                        events.append(self.LOG_ACTOR_MIGRATE)
                    elif event == 'application_new':
                        events.append(self.LOG_APPLICATION_NEW)
                    elif event == 'application_destroy':
                        events.append(self.LOG_APPLICATION_DESTROY)
                    else:
                        status = calvinresponse.BAD_REQUEST
                        break
            if status == calvinresponse.OK:
                self.loggers[user_id] = Logger(actors=actors, events=events)
        else:
            status = calvinresponse.BAD_REQUEST

        self.send_response(handle, connection,
                           json.dumps({'user_id': user_id, 'epoch_year': time.gmtime(0).tm_year})
                           if status == calvinresponse.OK else None,
                           status=status)
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/runtime/north/calvincontrol.py/CalvinControl.handle_post_log/operator `in` -> `!=`