99 lines
2.9 KiB
Python
99 lines
2.9 KiB
Python
from __future__ import annotations
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import logging
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import stat
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from typing import TYPE_CHECKING
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import aiofiles
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from aiohttp import hdrs
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from . import fs
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from .utils import IS_DOCKER, asyncify, bytes_decode
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if TYPE_CHECKING:
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import asyncio
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from aiohttp import ClientResponse, ClientSession
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from rich.progress import Progress, TaskID
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logger = logging.getLogger(__name__)
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GEODB_URL = "https://raw.githubusercontent.com/P3TERX/GeoLite.mmdb/download/GeoLite2-City.mmdb"
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GEODB_PATH = fs.CACHE_PATH / "geolocation_database.mmdb"
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GEODB_ETAG_PATH = GEODB_PATH.with_suffix(".mmdb.etag")
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async def _read_etag() -> str | None:
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try:
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await fs.async_add_permission(GEODB_ETAG_PATH, stat.S_IRUSR)
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async with aiofiles.open(GEODB_ETAG_PATH, "rb") as etag_file:
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content = await etag_file.read()
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except FileNotFoundError:
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return None
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return bytes_decode(content)
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def _remove_etag() -> asyncio.Future[None]:
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return asyncify(GEODB_ETAG_PATH.unlink)(missing_ok=True)
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async def _save_etag(etag: str, /) -> None:
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await fs.async_add_permission(
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GEODB_ETAG_PATH, stat.S_IWUSR, missing_ok=True
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)
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async with aiofiles.open(
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GEODB_ETAG_PATH, "w", encoding="utf-8"
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) as etag_file:
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await etag_file.write(etag)
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async def _save_geodb(
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*, progress: Progress, response: ClientResponse, task: TaskID
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) -> None:
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await fs.async_add_permission(GEODB_PATH, stat.S_IWUSR, missing_ok=True)
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async with aiofiles.open(GEODB_PATH, "wb") as geodb:
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async for chunk in response.content.iter_any():
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await geodb.write(chunk)
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progress.advance(task_id=task, advance=len(chunk))
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async def download_geodb(*, progress: Progress, session: ClientSession) -> None:
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headers = (
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{hdrs.IF_NONE_MATCH: current_etag}
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if await asyncify(GEODB_PATH.exists)()
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and (current_etag := await _read_etag())
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else None
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)
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async with session.get(GEODB_URL, headers=headers) as response:
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if response.status == 304: # noqa: PLR2004
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logger.info(
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"Latest geolocation database is already cached at %s",
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GEODB_PATH,
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)
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return
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await _save_geodb(
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progress=progress,
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response=response,
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task=progress.add_task(
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description="",
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total=response.content_length,
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col1="Downloader",
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col2="GeoDB",
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),
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)
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if IS_DOCKER:
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logger.info(
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"Downloaded geolocation database to proxy_scraper_checker_cache "
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"Docker volume (%s in container)",
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GEODB_PATH,
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)
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else:
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logger.info("Downloaded geolocation database to %s", GEODB_PATH)
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if etag := response.headers.get(hdrs.ETAG):
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await _save_etag(etag)
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else:
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await _remove_etag()
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