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RedisFastProducer

faststream.redis.publisher.producer.RedisFastProducer #

RedisFastProducer(connection, parser, decoder)

Bases: ProducerProto

A class to represent a Redis producer.

Source code in faststream/redis/publisher/producer.py 
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def __init__(
    self,
    connection: "Redis[bytes]",
    parser: Optional["CustomCallable"],
    decoder: Optional["CustomCallable"],
) -> None:
    self._connection = connection

    default = RedisPubSubParser()
    self._parser = resolve_custom_func(
        parser,
        default.parse_message,
    )
    self._decoder = resolve_custom_func(
        decoder,
        default.decode_message,
    )

publish async #

publish(message, *, correlation_id, channel=None, list=None, stream=None, maxlen=None, headers=None, reply_to='', rpc=False, rpc_timeout=30.0, raise_timeout=False)
Source code in faststream/redis/publisher/producer.py 
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@override
async def publish(  # type: ignore[override]
    self,
    message: "SendableMessage",
    *,
    correlation_id: str,
    channel: Optional[str] = None,
    list: Optional[str] = None,
    stream: Optional[str] = None,
    maxlen: Optional[int] = None,
    headers: Optional["AnyDict"] = None,
    reply_to: str = "",
    rpc: bool = False,
    rpc_timeout: Optional[float] = 30.0,
    raise_timeout: bool = False,
) -> Optional[Any]:
    if not any((channel, list, stream)):
        raise SetupError(INCORRECT_SETUP_MSG)

    psub: Optional[PubSub] = None
    if rpc:
        if reply_to:
            raise WRONG_PUBLISH_ARGS
        nuid = NUID()
        rpc_nuid = str(nuid.next(), "utf-8")
        reply_to = rpc_nuid
        psub = self._connection.pubsub()
        await psub.subscribe(reply_to)

    msg = RawMessage.encode(
        message=message,
        reply_to=reply_to,
        headers=headers,
        correlation_id=correlation_id,
    )

    if channel is not None:
        await self._connection.publish(channel, msg)
    elif list is not None:
        await self._connection.rpush(list, msg)
    elif stream is not None:
        await self._connection.xadd(
            name=stream,
            fields={DATA_KEY: msg},
            maxlen=maxlen,
        )
    else:
        raise AssertionError("unreachable")

    if psub is None:
        return None

    else:
        m = None
        with timeout_scope(rpc_timeout, raise_timeout):
            # skip subscribe message
            await psub.get_message(
                ignore_subscribe_messages=True,
                timeout=rpc_timeout or 0.0,
            )

            # get real response
            m = await psub.get_message(
                ignore_subscribe_messages=True,
                timeout=rpc_timeout or 0.0,
            )

        await psub.unsubscribe()
        await psub.aclose()  # type: ignore[attr-defined]

        if m is None:
            if raise_timeout:
                raise TimeoutError()
            else:
                return None
        else:
            return await self._decoder(await self._parser(m))

request async #

request(message, *, correlation_id, channel=None, list=None, stream=None, maxlen=None, headers=None, timeout=30.0)
Source code in faststream/redis/publisher/producer.py 
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@override
async def request(  # type: ignore[override]
    self,
    message: "SendableMessage",
    *,
    correlation_id: str,
    channel: Optional[str] = None,
    list: Optional[str] = None,
    stream: Optional[str] = None,
    maxlen: Optional[int] = None,
    headers: Optional["AnyDict"] = None,
    timeout: Optional[float] = 30.0,
) -> "Any":
    if not any((channel, list, stream)):
        raise SetupError(INCORRECT_SETUP_MSG)

    nuid = NUID()
    reply_to = str(nuid.next(), "utf-8")
    psub = self._connection.pubsub()
    await psub.subscribe(reply_to)

    msg = RawMessage.encode(
        message=message,
        reply_to=reply_to,
        headers=headers,
        correlation_id=correlation_id,
    )

    if channel is not None:
        await self._connection.publish(channel, msg)
    elif list is not None:
        await self._connection.rpush(list, msg)
    elif stream is not None:
        await self._connection.xadd(
            name=stream,
            fields={DATA_KEY: msg},
            maxlen=maxlen,
        )
    else:
        raise AssertionError("unreachable")

    with anyio.fail_after(timeout) as scope:
        # skip subscribe message
        await psub.get_message(
            ignore_subscribe_messages=True,
            timeout=timeout or 0.0,
        )

        # get real response
        response_msg = await psub.get_message(
            ignore_subscribe_messages=True,
            timeout=timeout or 0.0,
        )

    await psub.unsubscribe()
    await psub.aclose()  # type: ignore[attr-defined]

    if scope.cancel_called:
        raise TimeoutError

    return response_msg

publish_batch async #

publish_batch(*msgs, list, correlation_id, headers=None)
Source code in faststream/redis/publisher/producer.py 
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async def publish_batch(
    self,
    *msgs: "SendableMessage",
    list: str,
    correlation_id: str,
    headers: Optional["AnyDict"] = None,
) -> None:
    batch = (
        RawMessage.encode(
            message=msg,
            correlation_id=correlation_id,
            reply_to=None,
            headers=headers,
        )
        for msg in msgs
    )
    await self._connection.rpush(list, *batch)