feat: 引入异步文件 I/O 避免阻塞事件循环，共享全局 httpx 连接池

entry.py

@@ -5,7 +5,7 @@ import uvloop
 from loguru import logger
 
 from models import init_model
-from processor import process
+from processor import cleanup, process
 from settings import settings
 
 asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
@@ -25,4 +25,8 @@ async def entry() -> None:
 
 
 if __name__ == "__main__":
-    asyncio.run(entry())
+    with asyncio.Runner() as runner:
+        try:
+            runner.run(entry())
+        finally:
+            runner.run(cleanup())

poetry.lock

@@ -1,5 +1,16 @@
 # This file is automatically @generated by Poetry 1.7.0 and should not be changed by hand.
 
+[[package]]
+name = "aiofiles"
+version = "23.2.1"
+description = "File support for asyncio."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "aiofiles-23.2.1-py3-none-any.whl", hash = "sha256:19297512c647d4b27a2cf7c34caa7e405c0d60b5560618a29a9fe027b18b0107"},
+    {file = "aiofiles-23.2.1.tar.gz", hash = "sha256:84ec2218d8419404abcb9f0c02df3f34c6e0a68ed41072acfb1cef5cbc29051a"},
+]
+
 [[package]]
 name = "aiohttp"
 version = "3.9.0"
@@ -1801,4 +1812,4 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "eb9d995cdf3732762a25c0e49cb58df7c71122646f24ba5715979c6a510d9ed1"
+content-hash = "aa8b8172538f633284fb81f9cb6d1ca6644c3c104859738237965f70ccb2fb59"

processor.py

@@ -4,6 +4,7 @@ from asyncio import Semaphore, create_subprocess_exec
 from asyncio.subprocess import DEVNULL
 from pathlib import Path
 
+import aiofiles
 import httpx
 from bilibili_api import HEADERS, favorite_list, video
 from loguru import logger
@@ -15,6 +16,12 @@ from settings import settings
 
 anchor = datetime.datetime.today()
 
+client = httpx.AsyncClient(headers=HEADERS)
+
+
+async def cleanup() -> None:
+    await client.aclose()
+
 
 def concurrent_decorator(concurrency: int) -> callable:
     sem = Semaphore(value=concurrency)
@@ -30,13 +37,13 @@ def concurrent_decorator(concurrency: int) -> callable:
 
 
 async def download_content(url: str, path: Path):
-    async with httpx.AsyncClient(headers=HEADERS) as sess:
+    async with client.stream("GET", url) as resp, aiofiles.open(
-        resp = await sess.get(url)
+        path, "wb"
-        with path.open("wb") as f:
+    ) as f:
-            for chunk in resp.iter_bytes(1024):
+        async for chunk in resp.aiter_bytes(40960):
             if not chunk:
-                    break
+                return
-                f.write(chunk)
+            await f.write(chunk)
 
 
 async def process():

pyproject.toml

@@ -13,6 +13,7 @@ dataclasses-json = "0.6.2"
 tortoise-orm = "0.20.0"
 loguru = "0.7.2"
 uvloop = "0.19.0"
+aiofiles = "23.2.1"
 
 
 [tool.poetry.group.dev.dependencies]