Skip to content

AioPikaFastProducer

faststream.rabbit.publisher.producer.AioPikaFastProducer #

AioPikaFastProducer(*, declarer, parser, decoder)

Bases: ProducerProto

A class for fast producing messages using aio-pika.

Source code in faststream/rabbit/publisher/producer.py 
44
45
46
47
48
49
50
51
52
53
54
55
56
57
def __init__(
    self,
    *,
    declarer: "RabbitDeclarer",
    parser: Optional["CustomCallable"],
    decoder: Optional["CustomCallable"],
) -> None:
    self.declarer = declarer

    self._rpc_lock = anyio.Lock()

    default_parser = AioPikaParser()
    self._parser = resolve_custom_func(parser, default_parser.parse_message)
    self._decoder = resolve_custom_func(decoder, default_parser.decode_message)

declarer instance-attribute #

declarer = declarer

publish async #

publish(message, exchange=None, *, correlation_id='', routing_key='', mandatory=True, immediate=False, timeout=None, rpc=False, rpc_timeout=30.0, raise_timeout=False, persist=False, reply_to=None, headers=None, content_type=None, content_encoding=None, priority=None, expiration=None, message_id=None, timestamp=None, message_type=None, user_id=None, app_id=None)

Publish a message to a RabbitMQ queue.

Source code in faststream/rabbit/publisher/producer.py 
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
@override
async def publish(  # type: ignore[override]
    self,
    message: "AioPikaSendableMessage",
    exchange: Union["RabbitExchange", str, None] = None,
    *,
    correlation_id: str = "",
    routing_key: str = "",
    mandatory: bool = True,
    immediate: bool = False,
    timeout: "TimeoutType" = None,
    rpc: bool = False,
    rpc_timeout: Optional[float] = 30.0,
    raise_timeout: bool = False,
    persist: bool = False,
    reply_to: Optional[str] = None,
    headers: Optional["HeadersType"] = None,
    content_type: Optional[str] = None,
    content_encoding: Optional[str] = None,
    priority: Optional[int] = None,
    expiration: Optional["DateType"] = None,
    message_id: Optional[str] = None,
    timestamp: Optional["DateType"] = None,
    message_type: Optional[str] = None,
    user_id: Optional[str] = None,
    app_id: Optional[str] = None,
) -> Optional[Any]:
    """Publish a message to a RabbitMQ queue."""
    context: AsyncContextManager[
        Optional[MemoryObjectReceiveStream[IncomingMessage]]
    ]
    if rpc:
        if reply_to is not None:
            raise WRONG_PUBLISH_ARGS

        context = _RPCCallback(
            self._rpc_lock,
            await self.declarer.declare_queue(RABBIT_REPLY),
        )
    else:
        context = fake_context()

    async with context as response_queue:
        r = await self._publish(
            message=message,
            exchange=exchange,
            routing_key=routing_key,
            mandatory=mandatory,
            immediate=immediate,
            timeout=timeout,
            persist=persist,
            reply_to=reply_to if response_queue is None else RABBIT_REPLY.name,
            headers=headers,
            content_type=content_type,
            content_encoding=content_encoding,
            priority=priority,
            correlation_id=correlation_id,
            expiration=expiration,
            message_id=message_id,
            timestamp=timestamp,
            message_type=message_type,
            user_id=user_id,
            app_id=app_id,
        )

        if response_queue is None:
            return r

        else:
            msg: Optional[IncomingMessage] = None
            with timeout_scope(rpc_timeout, raise_timeout):
                msg = await response_queue.receive()

            if msg:  # pragma: no branch
                return await self._decoder(await self._parser(msg))

    return None

request async #

request(message, exchange=None, *, correlation_id='', routing_key='', mandatory=True, immediate=False, timeout=None, persist=False, headers=None, content_type=None, content_encoding=None, priority=None, expiration=None, message_id=None, timestamp=None, message_type=None, user_id=None, app_id=None)

Publish a message to a RabbitMQ queue.

Source code in faststream/rabbit/publisher/producer.py 
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
@override
async def request(  # type: ignore[override]
    self,
    message: "AioPikaSendableMessage",
    exchange: Union["RabbitExchange", str, None] = None,
    *,
    correlation_id: str = "",
    routing_key: str = "",
    mandatory: bool = True,
    immediate: bool = False,
    timeout: Optional[float] = None,
    persist: bool = False,
    headers: Optional["HeadersType"] = None,
    content_type: Optional[str] = None,
    content_encoding: Optional[str] = None,
    priority: Optional[int] = None,
    expiration: Optional["DateType"] = None,
    message_id: Optional[str] = None,
    timestamp: Optional["DateType"] = None,
    message_type: Optional[str] = None,
    user_id: Optional[str] = None,
    app_id: Optional[str] = None,
) -> "IncomingMessage":
    """Publish a message to a RabbitMQ queue."""
    async with _RPCCallback(
        self._rpc_lock,
        await self.declarer.declare_queue(RABBIT_REPLY),
    ) as response_queue:
        with anyio.fail_after(timeout):
            await self._publish(
                message=message,
                exchange=exchange,
                routing_key=routing_key,
                mandatory=mandatory,
                immediate=immediate,
                timeout=timeout,
                persist=persist,
                reply_to=RABBIT_REPLY.name,
                headers=headers,
                content_type=content_type,
                content_encoding=content_encoding,
                priority=priority,
                correlation_id=correlation_id,
                expiration=expiration,
                message_id=message_id,
                timestamp=timestamp,
                message_type=message_type,
                user_id=user_id,
                app_id=app_id,
            )
            return await response_queue.receive()