ChannelPublisher

@override
def setup(  # type: ignore[override]
    self,
    *,
    producer: Optional["ProducerProto"],
) -> None:
    self._producer = producer

def schema(self) -> Dict[str, Channel]:
    """Returns the schema of the API operation as a dictionary of channel names and channel objects."""
    if self.include_in_schema:
        return self.get_schema()
    else:
        return {}

def add_middleware(self, middleware: "BrokerMiddleware[MsgType]") -> None:
    self._broker_middlewares = (*self._broker_middlewares, middleware)

@staticmethod
@abstractmethod
def create() -> "PublisherProto[MsgType]":
    """Abstract factory to create a real Publisher."""
    ...

@abstractmethod
def get_name(self) -> str:
    """Name property fallback."""
    raise NotImplementedError()

def get_description(self) -> Optional[str]:
    """Description property fallback."""
    return None

@abstractmethod
def get_schema(self) -> Dict[str, Channel]:
    """Generate AsyncAPI schema."""
    raise NotImplementedError()

def get_payloads(self) -> List[Tuple["AnyDict", str]]:
    payloads: List[Tuple[AnyDict, str]] = []

    if self.schema_:
        params = {"response__": (self.schema_, ...)}

        call_model: CallModel[Any, Any] = CallModel(
            call=lambda: None,
            model=create_model("Fake"),
            response_model=create_model(  # type: ignore[call-overload]
                "",
                __config__=get_config_base(),
                **params,
            ),
            params=params,
        )

        body = get_response_schema(
            call_model,
            prefix=f"{self.name}:Message",
        )
        if body:  # pragma: no branch
            payloads.append((body, ""))

    else:
        for call in self.calls:
            call_model = build_call_model(call)
            body = get_response_schema(
                call_model,
                prefix=f"{self.name}:Message",
            )
            if body:
                payloads.append((body, to_camelcase(unwrap(call).__name__)))

    return payloads

def set_test(
    self,
    *,
    mock: Annotated[
        MagicMock,
        Doc("Mock object to check in tests."),
    ],
    with_fake: Annotated[
        bool,
        Doc("Whetevet publisher's fake subscriber created or not."),
    ],
) -> None:
    """Turn publisher to testing mode."""
    self.mock = mock
    self._fake_handler = with_fake

def reset_test(self) -> None:
    """Turn off publisher's testing mode."""
    self._fake_handler = False
    self.mock = None

@override
def subscriber_property(self, *, name_only: bool) -> "AnyDict":
    return {
        "channel": self.channel.name if name_only else self.channel,
        "list": None,
        "stream": None,
    }

def add_prefix(self, prefix: str) -> None:
    channel = deepcopy(self.channel)
    channel.name = "".join((prefix, channel.name))
    self.channel = channel

@override
async def publish(
    self,
    message: Annotated[
        "SendableMessage",
        Doc("Message body to send."),
    ] = None,
    channel: Annotated[
        Optional[str],
        Doc("Redis PubSub object name to send message."),
    ] = None,
    reply_to: Annotated[
        str,
        Doc("Reply message destination PubSub object name."),
    ] = "",
    headers: Annotated[
        Optional["AnyDict"],
        Doc("Message headers to store metainformation."),
    ] = None,
    correlation_id: Annotated[
        Optional[str],
        Doc(
            "Manual message **correlation_id** setter. "
            "**correlation_id** is a useful option to trace messages."
        ),
    ] = None,
    *,
    # rpc args
    rpc: Annotated[
        bool,
        Doc("Whether to wait for reply in blocking mode."),
        deprecated(
            "Deprecated in **FastStream 0.5.17**. "
            "Please, use `request` method instead. "
            "Argument will be removed in **FastStream 0.6.0**."
        ),
    ] = False,
    rpc_timeout: Annotated[
        Optional[float],
        Doc("RPC reply waiting time."),
        deprecated(
            "Deprecated in **FastStream 0.5.17**. "
            "Please, use `request` method with `timeout` instead. "
            "Argument will be removed in **FastStream 0.6.0**."
        ),
    ] = 30.0,
    raise_timeout: Annotated[
        bool,
        Doc(
            "Whetever to raise `TimeoutError` or return `None` at **rpc_timeout**. "
            "RPC request returns `None` at timeout by default."
        ),
        deprecated(
            "Deprecated in **FastStream 0.5.17**. "
            "`request` always raises TimeoutError instead. "
            "Argument will be removed in **FastStream 0.6.0**."
        ),
    ] = False,
    # publisher specific
    _extra_middlewares: Annotated[
        Iterable["PublisherMiddleware"],
        Doc("Extra middlewares to wrap publishing process."),
    ] = (),
    **kwargs: Any,  # option to suppress maxlen
) -> Optional[Any]:
    assert self._producer, NOT_CONNECTED_YET  # nosec B101

    channel_sub = PubSub.validate(channel or self.channel)
    reply_to = reply_to or self.reply_to
    headers = headers or self.headers
    correlation_id = correlation_id or gen_cor_id()

    call: AsyncFunc = self._producer.publish

    for m in chain(
        self._middlewares[::-1],
        (
            _extra_middlewares
            or (m(None).publish_scope for m in self._broker_middlewares[::-1])
        ),
    ):
        call = partial(m, call)

    return await call(
        message,
        channel=channel_sub.name,
        # basic args
        reply_to=reply_to,
        headers=headers,
        correlation_id=correlation_id,
        # RPC args
        rpc=rpc,
        rpc_timeout=rpc_timeout,
        raise_timeout=raise_timeout,
    )

@override
async def request(
    self,
    message: Annotated[
        "SendableMessage",
        Doc("Message body to send."),
    ] = None,
    channel: Annotated[
        Optional[str],
        Doc("Redis PubSub object name to send message."),
    ] = None,
    *,
    correlation_id: Annotated[
        Optional[str],
        Doc(
            "Manual message **correlation_id** setter. "
            "**correlation_id** is a useful option to trace messages."
        ),
    ] = None,
    headers: Annotated[
        Optional["AnyDict"],
        Doc("Message headers to store metainformation."),
    ] = None,
    timeout: Annotated[
        Optional[float],
        Doc("RPC reply waiting time."),
    ] = 30.0,
    # publisher specific
    _extra_middlewares: Annotated[
        Iterable["PublisherMiddleware"],
        Doc("Extra middlewares to wrap publishing process."),
    ] = (),
) -> "RedisMessage":
    assert self._producer, NOT_CONNECTED_YET  # nosec B101

    kwargs = {
        "channel": PubSub.validate(channel or self.channel).name,
        # basic args
        "headers": headers or self.headers,
        "correlation_id": correlation_id or gen_cor_id(),
        "timeout": timeout,
    }
    request: AsyncFunc = self._producer.request

    for pub_m in chain(
        self._middlewares[::-1],
        (
            _extra_middlewares
            or (m(None).publish_scope for m in self._broker_middlewares[::-1])
        ),
    ):
        request = partial(pub_m, request)

    published_msg = await request(
        message,
        **kwargs,
    )

    async with AsyncExitStack() as stack:
        return_msg: Callable[[RedisMessage], Awaitable[RedisMessage]] = return_input
        for m in self._broker_middlewares[::-1]:
            mid = m(published_msg)
            await stack.enter_async_context(mid)
            return_msg = partial(mid.consume_scope, return_msg)

        parsed_msg = await self._producer._parser(published_msg)
        parsed_msg._decoded_body = await self._producer._decoder(parsed_msg)
        parsed_msg._source_type = SourceType.Response
        return await return_msg(parsed_msg)

    raise AssertionError("unreachable")