Skip to content

MQTTPublisherSpecification

faststream.mqtt.publisher.specification.MQTTPublisherSpecification #

MQTTPublisherSpecification(
    _outer_config: T_BrokerConfig,
    specification_config: T_SpecificationConfig,
)

Bases: PublisherSpecification[MQTTBrokerConfig, MQTTPublisherSpecificationConfig]

Source code in faststream/_internal/endpoint/publisher/specification.py 
26
27
28
29
30
31
32
33
34
def __init__(
    self,
    _outer_config: "T_BrokerConfig",
    specification_config: "T_SpecificationConfig",
) -> None:
    self.config = specification_config
    self._outer_config = _outer_config

    self.calls: list[AnyCallable] = []

topic property #

topic: str

name property #

name: str

config instance-attribute #

config = specification_config

calls instance-attribute #

calls: list[AnyCallable] = []

include_in_schema property #

include_in_schema: bool

get_schema #

get_schema() -> dict[str, PublisherSpec]
Source code in faststream/mqtt/publisher/specification.py 
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
def get_schema(self) -> dict[str, PublisherSpec]:
    payloads = self.get_payloads()

    return {
        self.name: PublisherSpec(
            description=self.config.description_,
            operation=Operation(
                message=Message(
                    title=f"{self.name}:Message",
                    payload=resolve_payloads(payloads, "Publisher"),
                ),
                bindings=OperationBinding(
                    mqtt=mqtt_bindings.OperationBinding(
                        qos=self.config.qos,
                        retain=self.config.retain,
                    ),
                ),
            ),
            bindings=ChannelBinding(
                mqtt=mqtt_bindings.ChannelBinding(
                    topic=self.topic,
                    qos=self.config.qos,
                    retain=self.config.retain,
                ),
            ),
        ),
    }

add_call #

add_call(call: AnyCallable) -> None
Source code in faststream/_internal/endpoint/publisher/specification.py 
36
37
def add_call(self, call: "AnyCallable") -> None:
    self.calls.append(call)

get_payloads #

get_payloads() -> list[tuple[dict[str, Any], str]]
Source code in faststream/_internal/endpoint/publisher/specification.py 
45
46
47
48
49
50
51
52
53
54
55
56
57
58
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
def get_payloads(self) -> list[tuple[dict[str, Any], str]]:
    payloads: list[tuple[dict[str, Any], str]] = []

    if self.config.schema_:
        body = get_model_schema(
            call=create_model(
                "",
                __config__=get_config_base(),
                response__=(self.config.schema_, ...),
            ),
            prefix=f"{self.name}:Message",
        )

        if body:  # pragma: no branch
            payloads.append((body, ""))

    else:
        di_state = self._outer_config.fd_config

        for call in self.calls:
            call_model = build_call_model(
                call,
                dependency_provider=di_state.provider,
                serializer_cls=di_state._serializer,
            )

            if call_model.serializer:
                response_type = next(
                    iter(call_model.serializer.response_option.values()),
                ).field_type
            else:
                response_type = None

            if response_type is not None and response_type is not Parameter.empty:
                body = get_model_schema(
                    create_model(
                        "",
                        __config__=get_config_base(),
                        response__=(response_type, ...),
                    ),
                    prefix=f"{self.name}:Message",
                )

                if body:
                    payloads.append((body, to_camelcase(unwrap(call).__name__)))

    return payloads