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63 lines
1.5 KiB
Python
63 lines
1.5 KiB
Python
import asyncio
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from typing import Union, Literal
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from msgspec import Struct, json
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from logging import getLogger
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from aio_pika.abc import AbstractIncomingMessage
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from providers.rabbit_base import RabbitBase
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from matcher.matcher import Matcher
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logger = getLogger(__name__)
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class Message(Struct, tag_field="action", tag=str.lower):
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pass
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class Scan(Message):
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path: str
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class Delete(Message):
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path: str
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class Refresh(Message):
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kind: Literal["collection", "show", "movie", "season", "episode"]
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id: str
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decoder = json.Decoder(Union[Scan, Delete, Refresh])
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class Subscriber(RabbitBase):
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async def listen(self, matcher: Matcher):
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async def on_message(message: AbstractIncomingMessage):
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try:
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msg = decoder.decode(message.body)
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ack = False
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match msg:
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case Scan(path):
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ack = await matcher.identify(path)
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case Delete(path):
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ack = await matcher.delete(path)
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case Refresh(kind, id):
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ack = await matcher.refresh(kind, id)
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case _:
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logger.error(f"Invalid action: {msg.action}")
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if ack:
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logger.info("finished processing %s", msg)
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await message.ack()
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else:
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logger.warn("failed to process %s", msg)
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await message.reject()
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except Exception as e:
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logger.exception("Unhandled error", exc_info=e)
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await message.reject()
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# Allow up to 20 scan requests to run in parallel on the same listener.
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# Since most work is calling API not doing that is a waste.
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await self._channel.set_qos(prefetch_count=20)
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await self._queue.consume(on_message)
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await asyncio.Future()
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