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JsParser

faststream.nats.parser.JsParser #

JsParser(*, pattern: str)

Bases: NatsBaseParser

A class to parse NATS JS messages.

Source code in faststream/nats/parser.py 
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def __init__(
    self,
    *,
    pattern: str,
) -> None:
    path_re, _ = compile_nats_wildcard(pattern)
    self._path_re = path_re

parse_message async #

parse_message(message: Msg) -> StreamMessage[Msg]
Source code in faststream/nats/parser.py 
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async def parse_message(
    self,
    message: "Msg",
) -> "StreamMessage[Msg]":
    path = match_path(self._path_re, message.subject)

    headers = message.header or {}

    return NatsMessage(
        raw_message=message,
        body=message.data,
        path=path,
        reply_to=headers.get("reply_to", ""),  # differ from core
        headers=headers,
        content_type=headers.get("content-type"),
        message_id=headers.get("message_id"),
        correlation_id=headers.get("correlation_id"),
    )

decode_message async #

decode_message(msg: StreamMessage[Any]) -> DecodedMessage
Source code in faststream/nats/parser.py 
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async def decode_message(
    self,
    msg: "StreamMessage[Any]",
) -> "DecodedMessage":
    return decode_message(msg)