serialization.py 文件源码

def serialize(self, entity):
        if entity is None:
            return None

        key = self._get_serialization_key(type(entity))

        # Primitive or not registered type.
        if not key:
            return jsonutils.dumps(
                jsonutils.to_primitive(entity, convert_instances=True)
            )

        serializer = self.serializers.get(key)

        if not serializer:
            raise RuntimeError(
                "Failed to find a serializer for the key: %s" % key
            )

        result = {
            '__serial_key': key,
            '__serial_data': serializer.serialize(entity)
        }

        return jsonutils.dumps(result)