MessageStartEvent dataclass

The start of a message.

Source code in src/aws_sdk_bedrock_runtime/models.py

@dataclass(kw_only=True)
class MessageStartEvent:
    """The start of a message."""

    role: str
    """The role for the message."""

    def serialize(self, serializer: ShapeSerializer):
        serializer.write_struct(_SCHEMA_MESSAGE_START_EVENT, self)

    def serialize_members(self, serializer: ShapeSerializer):
        serializer.write_string(_SCHEMA_MESSAGE_START_EVENT.members["role"], self.role)

    @classmethod
    def deserialize(cls, deserializer: ShapeDeserializer) -> Self:
        return cls(**cls.deserialize_kwargs(deserializer))

    @classmethod
    def deserialize_kwargs(cls, deserializer: ShapeDeserializer) -> dict[str, Any]:
        kwargs: dict[str, Any] = {}

        def _consumer(schema: Schema, de: ShapeDeserializer) -> None:
            match schema.expect_member_index():
                case 0:
                    kwargs["role"] = de.read_string(
                        _SCHEMA_MESSAGE_START_EVENT.members["role"]
                    )

                case _:
                    logger.debug("Unexpected member schema: %s", schema)

        deserializer.read_struct(_SCHEMA_MESSAGE_START_EVENT, consumer=_consumer)
        return kwargs

Attributes

role instance-attribute

role: str

The role for the message.