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RabbitMQ plugin for Spakky framework

Project description

Spakky RabbitMQ

Spakky Framework를 위한 RabbitMQ 플러그인입니다.

설치

pip install spakky-rabbitmq

또는 Spakky extra로 설치합니다:

pip install spakky[rabbitmq]

설정

SPAKKY_RABBITMQ__ prefix를 가진 환경변수를 설정합니다:

export SPAKKY_RABBITMQ__USE_SSL="false"
export SPAKKY_RABBITMQ__HOST="localhost"
export SPAKKY_RABBITMQ__PORT="5672"
export SPAKKY_RABBITMQ__USER="guest"
export SPAKKY_RABBITMQ__PASSWORD="guest"
export SPAKKY_RABBITMQ__EXCHANGE_NAME="my-exchange"  # Optional

사용법

이벤트 발행

from spakky.core.common.mutability import immutable
from spakky.domain.models.event import AbstractIntegrationEvent
from spakky.event.event_publisher import IEventPublisher
from spakky.core.pod.annotations.pod import Pod

@immutable
class UserCreatedEvent(AbstractIntegrationEvent):
    user_id: int
    email: str

@Pod()
class UserService:
    def __init__(self, publisher: IEventPublisher) -> None:
        self.publisher = publisher

    def create_user(self, email: str) -> User:
        user = User(email=email)
        self.publisher.publish(UserCreatedEvent(user_id=user.id, email=email))
        return user

이벤트 수신

from spakky.event.stereotype.event_handler import EventHandler, on_event

@EventHandler()
class UserEventHandler:
    def __init__(self, notification_service: NotificationService) -> None:
        self.notification_service = notification_service

    @on_event(UserCreatedEvent)
    async def on_user_created(self, event: UserCreatedEvent) -> None:
        await self.notification_service.send_welcome_email(event.email)

비동기 변형

비동기 애플리케이션에서는 IAsyncEventPublisher를 사용합니다:

from spakky.event.event_publisher import IAsyncEventPublisher

@Pod()
class AsyncUserService:
    def __init__(self, publisher: IAsyncEventPublisher) -> None:
        self.publisher = publisher

    async def create_user(self, email: str) -> User:
        user = User(email=email)
        await self.publisher.publish(UserCreatedEvent(user_id=user.id, email=email))
        return user

분산 트레이싱

spakky-tracing은 필수 의존성으로 자동 설치됩니다. ITracePropagator가 컨테이너에 등록되어 있으면 이벤트 발행/소비 시 TraceContext가 자동으로 전파됩니다.

  • 발행 측: IEventTransport.send() 시 현재 TraceContext를 메시지 헤더에 주입합니다
  • 소비 측: 수신 메시지에서 TraceContext를 추출하여 자식 스팬을 생성합니다
  • 헤더가 없으면 새로운 루트 트레이스를 시작합니다

주요 기능

  • 자동 queue 선언: 이벤트 타입 이름을 기준으로 durable queue 생성
  • 동기/비동기 지원: 동기 및 비동기 publisher/consumer 모두 지원
  • Background service 패턴: consumer polling을 background service로 실행
  • Pydantic 직렬화: 이벤트를 Pydantic으로 직렬화/역직렬화
  • Exchange 라우팅: pub/sub 메시지 패턴을 위한 선택적 exchange
  • SSL 지원: AMQPS protocol 기반 보안 연결
  • 분산 트레이싱: 서비스 간 trace 전파를 위한 spakky-tracing 통합

구성 요소

컴포넌트 설명
RabbitMQEventTransport 동기 event transport(IEventTransport)
AsyncRabbitMQEventTransport 비동기 event transport(IAsyncEventTransport)
RabbitMQEventConsumer 동기 event consumer(background service)
AsyncRabbitMQEventConsumer 비동기 event consumer(background service)
RabbitMQConnectionConfig 환경변수 기반 설정

에러 처리

  • InvalidMessageError: 필수 metadata(consumer_tag 또는 delivery_tag)가 없는 message에서 발생

라이선스

MIT License

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