266 lines
9.7 KiB
Python
266 lines
9.7 KiB
Python
from __future__ import annotations
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import time
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from app.dependencies.database import get_redis
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from app.log import logger
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from httpx import AsyncClient
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class TokenAuthError(Exception):
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"""Token 授权失败异常"""
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pass
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class BaseFetcher:
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def __init__(
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self,
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client_id: str,
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client_secret: str,
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scope: list[str] = ["public"],
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callback_url: str = "",
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max_retries: int = 3,
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):
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self.client_id = client_id
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self.client_secret = client_secret
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self.access_token: str = ""
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self.refresh_token: str = ""
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self.token_expiry: int = 0
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self.callback_url: str = callback_url
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self.scope = scope
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self.max_retries = max_retries
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self._auth_retry_count = 0 # 授权重试计数器
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@property
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def authorize_url(self) -> str:
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return (
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f"https://osu.ppy.sh/oauth/authorize?client_id={self.client_id}"
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f"&response_type=code&scope={' '.join(self.scope)}"
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f"&redirect_uri={self.callback_url}"
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)
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@property
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def header(self) -> dict[str, str]:
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return {
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"Authorization": f"Bearer {self.access_token}",
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"Content-Type": "application/json",
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}
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async def request_api(self, url: str, method: str = "GET", **kwargs) -> dict:
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"""
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发送 API 请求，具有智能重试和自动重新授权机制
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"""
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return await self._request_with_retry(url, method, **kwargs)
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async def _request_with_retry(
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self, url: str, method: str = "GET", max_retries: int | None = None, **kwargs
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) -> dict:
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"""
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带重试机制的请求方法
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"""
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if max_retries is None:
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max_retries = self.max_retries
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last_error = None
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for attempt in range(max_retries + 1):
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try:
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# 检查 token 是否过期
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if self.is_token_expired():
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await self.refresh_access_token()
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header = kwargs.pop("headers", {})
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header.update(self.header)
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async with AsyncClient() as client:
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response = await client.request(
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method,
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url,
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headers=header,
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**kwargs,
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)
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# 处理 401 错误
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if response.status_code == 401:
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self._auth_retry_count += 1
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logger.warning(
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f"Received 401 error (attempt {attempt + 1}/{max_retries + 1}) "
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f"for {url}, auth retry count: {self._auth_retry_count}"
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)
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# 如果达到最大重试次数，触发重新授权
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if self._auth_retry_count >= self.max_retries:
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await self._trigger_reauthorization()
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raise TokenAuthError(
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f"Authentication failed after {self._auth_retry_count} attempts. "
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f"Please re-authorize using: {self.authorize_url}"
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)
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# 如果还有重试机会，刷新 token 后继续
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if attempt < max_retries:
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await self.refresh_access_token()
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continue
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else:
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# 最后一次重试也失败了
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await self._trigger_reauthorization()
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raise TokenAuthError(
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f"Max retries ({max_retries}) exceeded for authentication. "
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f"Please re-authorize using: {self.authorize_url}"
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)
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# 请求成功，重置重试计数器
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self._auth_retry_count = 0
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response.raise_for_status()
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return response.json()
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except TokenAuthError:
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# 重新抛出授权错误
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raise
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except Exception as e:
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last_error = e
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if attempt < max_retries:
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logger.warning(
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f"Request failed (attempt {attempt + 1}/{max_retries + 1}): {e}, retrying..."
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)
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continue
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else:
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logger.error(
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f"Request failed after {max_retries + 1} attempts: {e}"
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)
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break
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# 如果所有重试都失败了
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if last_error:
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raise last_error
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else:
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raise Exception(f"Request to {url} failed after {max_retries + 1} attempts")
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def is_token_expired(self) -> bool:
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return self.token_expiry <= int(time.time())
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async def grant_access_token(self, code: str) -> None:
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async with AsyncClient() as client:
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response = await client.post(
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"https://osu.ppy.sh/oauth/token",
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data={
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"client_id": self.client_id,
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"client_secret": self.client_secret,
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"grant_type": "authorization_code",
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"redirect_uri": self.callback_url,
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"code": code,
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},
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)
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response.raise_for_status()
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token_data = response.json()
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self.access_token = token_data["access_token"]
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self.refresh_token = token_data.get("refresh_token", "")
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self.token_expiry = int(time.time()) + token_data["expires_in"]
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redis = get_redis()
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await redis.set(
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f"fetcher:access_token:{self.client_id}",
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self.access_token,
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ex=token_data["expires_in"],
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)
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await redis.set(
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f"fetcher:refresh_token:{self.client_id}",
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self.refresh_token,
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)
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async def refresh_access_token(self) -> None:
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try:
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logger.info(f"Refreshing access token for client {self.client_id}")
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async with AsyncClient() as client:
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response = await client.post(
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"https://osu.ppy.sh/oauth/token",
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data={
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"client_id": self.client_id,
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"client_secret": self.client_secret,
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"grant_type": "refresh_token",
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"refresh_token": self.refresh_token,
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},
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)
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response.raise_for_status()
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token_data = response.json()
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self.access_token = token_data["access_token"]
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self.refresh_token = token_data.get("refresh_token", "")
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self.token_expiry = int(time.time()) + token_data["expires_in"]
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redis = get_redis()
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await redis.set(
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f"fetcher:access_token:{self.client_id}",
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self.access_token,
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ex=token_data["expires_in"],
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)
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await redis.set(
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f"fetcher:refresh_token:{self.client_id}",
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self.refresh_token,
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)
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logger.info(
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f"Successfully refreshed access token for client {self.client_id}"
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)
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except Exception as e:
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logger.error(
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f"Failed to refresh access token for client {self.client_id}: {e}"
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)
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# 清除无效的 token，要求重新授权
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self.access_token = ""
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self.refresh_token = ""
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self.token_expiry = 0
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redis = get_redis()
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await redis.delete(f"fetcher:access_token:{self.client_id}")
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await redis.delete(f"fetcher:refresh_token:{self.client_id}")
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logger.warning(
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f"Cleared invalid tokens. Please re-authorize: {self.authorize_url}"
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)
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raise
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async def _trigger_reauthorization(self) -> None:
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"""
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触发重新授权流程
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清除所有 token 并重置重试计数器
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"""
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logger.error(
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f"Authentication failed after {self._auth_retry_count} attempts. "
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f"Triggering reauthorization for client {self.client_id}"
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)
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# 清除内存中的 token
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self.access_token = ""
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self.refresh_token = ""
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self.token_expiry = 0
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self._auth_retry_count = 0 # 重置重试计数器
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# 清除 Redis 中的 token
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redis = get_redis()
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await redis.delete(f"fetcher:access_token:{self.client_id}")
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await redis.delete(f"fetcher:refresh_token:{self.client_id}")
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logger.warning(
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f"All tokens cleared for client {self.client_id}. "
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f"Please re-authorize using: {self.authorize_url}"
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)
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def reset_auth_retry_count(self) -> None:
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"""
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重置授权重试计数器
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可以在手动重新授权后调用
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"""
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self._auth_retry_count = 0
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logger.info(f"Auth retry count reset for client {self.client_id}")
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def get_auth_status(self) -> dict:
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"""
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获取当前授权状态信息
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"""
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return {
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"client_id": self.client_id,
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"has_access_token": bool(self.access_token),
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"has_refresh_token": bool(self.refresh_token),
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"token_expired": self.is_token_expired(),
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"auth_retry_count": self._auth_retry_count,
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"max_retries": self.max_retries,
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"authorize_url": self.authorize_url,
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"needs_reauth": self._auth_retry_count >= self.max_retries,
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}
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