KvParser

faststream.nats.parser.KvParser

KvParser(*, pattern)

Bases: NatsBaseParser

Source code in faststream/nats/parser.py

def __init__(
    self,
    *,
    pattern: str,
) -> None:
    path_re, _ = compile_nats_wildcard(pattern)
    self.__path_re = path_re

parse_message async

parse_message(msg)

Source code in faststream/nats/parser.py

async def parse_message(
    self,
    msg: "KeyValue.Entry",
) -> StreamMessage["KeyValue.Entry"]:
    return NatsKvMessage(
        raw_message=msg,
        body=msg.value,
        path=self.get_path(msg.key) or {},
    )

get_path

get_path(subject)

Source code in faststream/nats/parser.py

def get_path(
    self,
    subject: str,
) -> dict[str, Any] | None:
    path: dict[str, Any] | None = None

    if (path_re := self.__path_re) is not None and (
        match := path_re.match(subject)
    ) is not None:
        path = match.groupdict()

    return path

decode_message async

decode_message(msg)

Source code in faststream/nats/parser.py

async def decode_message(
    self,
    msg: "StreamMessage[Any]",
) -> "DecodedMessage":
    return decode_message(msg)