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67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
import asyncio
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from typing import Type
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from comment_service.models.config import Config
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from comment_service.models.service import CommentDBRepository
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from comment_service.events.producer import CommentEventProducer
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from comment_service.events.post_consumer import PostEventConsumer
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from comment_service.events.user_consumer import UserEventConsumer
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class EventConsumersWrapper:
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"""A wrapper class for starting the event consumers.
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Attributes:
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_post_consumer (PostEventConsumer): A wrapped consumer.
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_user_consumer (UserEventConsumer): A wrapped consumer.
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"""
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def __init__(self, post_consumer: PostEventConsumer, user_consumer: UserEventConsumer) -> None:
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"""Add the consumers to the wrapper
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Args:
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post_consumer (PostEventConsumer): Initialised post consumer.
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user_consumer (UserEventConsumer): Initialised user consumer.
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"""
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self._post_consumer = post_consumer
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self._user_consumer = user_consumer
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async def start(self) -> None:
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"""Begin consuming events on all the event consumers."""
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await asyncio.gather(
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self._post_consumer.start(),
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self._user_consumer.start()
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)
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def create_consumers(config: Config, db_repo: Type[CommentDBRepository]) -> EventConsumersWrapper:
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"""Initialse the event consumers and return them in a wrapper.
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Args:
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config (Config): The app configuration instance.
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db_repo (Type[CommentDBRepository]): The database repo to pass to the consumers.
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Returns:
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EventConsumerWrapper
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"""
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post_consumer = PostEventConsumer(config, db_repo)
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user_consumer = UserEventConsumer(config, db_repo)
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return EventConsumersWrapper(post_consumer=post_consumer, user_consumer=user_consumer)
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async def create_producer(config: Config) -> CommentEventProducer:
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"""Create an event producer for the service.
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Args:
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config (Config): The app configuration instance.
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Returns:
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CommentEventProducer
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"""
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producer = CommentEventProducer(config)
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await producer.start()
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return producer |