307 lines
11 KiB
Python
307 lines
11 KiB
Python
import json
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import asyncio
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from typing import Any, Dict, Optional, Tuple
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import httpx
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from sqlalchemy import select, update
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from sqlalchemy.ext.asyncio import AsyncSession
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from datetime import datetime, timezone, timedelta
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from app.models.user_oauth import UserOAuth
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from app.models.user_oauth_app import UserOAuthApp
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from app.models.base import async_session
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from app.utils.redis import get_redis
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class DouyinRequest:
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def __init__(self, platform: str = "douyin"):
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self._client: Optional[httpx.AsyncClient] = None
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self._platform = platform
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@property
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def client(self) -> httpx.AsyncClient:
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if not self._client:
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self._client = httpx.AsyncClient(
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timeout=httpx.Timeout(30.0),
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follow_redirects=True,
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)
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return self._client
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@property
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def _redis_key(self) -> str:
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return f"{self._platform}:tokens"
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async def close(self):
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if self._client:
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await self._client.aclose()
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self._client = None
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async def _get_redis_token(self, oauth_id: str) -> Optional[str]:
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redis = get_redis()
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if not redis:
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raise ValueError("Redis连接未配置")
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try:
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cache_str = await redis.hget(self._redis_key, oauth_id)
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if cache_str:
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cache = json.loads(cache_str)
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token = cache.get("token")
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expired_at_str = cache.get("expired_at")
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if token and expired_at_str:
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expired_at = datetime.fromisoformat(expired_at_str)
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if expired_at > datetime.now(timezone.utc):
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return token
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except Exception as e:
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raise ValueError(f"获取Redis缓存失败: {e}")
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return None
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async def _set_redis_token(self, oauth_id: str, token: str, expired_at: datetime):
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redis = get_redis()
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if not redis:
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raise ValueError("Redis连接未配置")
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try:
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cache = {
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"token": token,
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"expired_at": expired_at.isoformat(),
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}
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await redis.hset(self._redis_key, oauth_id, json.dumps(cache))
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except Exception as e:
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raise ValueError(f"设置Redis缓存失败: {e}")
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async def _delete_redis_token(self, oauth_id: str):
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redis = get_redis()
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if not redis:
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raise ValueError("Redis连接未配置")
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try:
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await redis.hdel(self._redis_key, oauth_id)
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except Exception as e:
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raise ValueError(f"删除Redis缓存失败: {e}")
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async def get_access_token(self, oauth_id: str, force_refresh: bool = False) -> str:
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if not force_refresh:
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token = await self._get_redis_token(oauth_id)
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if token:
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return token
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async with async_session() as db:
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oauth_data = await db.execute(
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select(UserOAuth).where(
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UserOAuth.id == oauth_id,
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UserOAuth.deleted_at.is_(None),
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).limit(1)
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)
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oauth_data = oauth_data.scalar_one_or_none()
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if not oauth_data:
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raise ValueError("无效的oauth_id")
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if force_refresh:
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await db.execute(
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update(UserOAuth).where(UserOAuth.id == oauth_id).values(
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access_token=None,
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access_token_expired=None,
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)
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)
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await db.commit()
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await self._delete_redis_token(oauth_id)
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new_token, new_expired_at = await self.refresh_access_token(db, oauth_id, oauth_data.appid, oauth_data.refresh_token)
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await self._set_redis_token(oauth_id, new_token, new_expired_at)
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return new_token
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if oauth_data.access_token_expired and oauth_data.access_token_expired > datetime.now(timezone.utc):
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token = oauth_data.access_token
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expired_at = oauth_data.access_token_expired
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await self._set_redis_token(oauth_id, token, expired_at)
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return token
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if oauth_data.refresh_token_expired and oauth_data.refresh_token_expired < datetime.now(timezone.utc):
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raise ValueError("授权已过期，请重新授权")
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new_token, new_expired_at = await self.refresh_access_token(db, oauth_id, oauth_data.appid, oauth_data.refresh_token)
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await self._set_redis_token(oauth_id, new_token, new_expired_at)
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return new_token
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async def refresh_access_token(self, db: AsyncSession, oauth_id: str, appid: str, refresh_token: str) -> Tuple[str, datetime]:
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result = await db.execute(
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select(UserOAuthApp.secret).where(
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UserOAuthApp.app_id == appid,
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UserOAuthApp.status == 1,
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UserOAuthApp.deleted_at.is_(None),
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).limit(1)
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)
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app_secret = result.scalar_one_or_none()
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if not app_secret:
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raise ValueError("应用已被删除或禁用")
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response = await self.client.request(
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'POST',
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'https://api.oceanengine.com/open_api/oauth2/refresh_token/',
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data={
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'app_id': appid,
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'secret': app_secret,
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'refresh_token': refresh_token,
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},
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)
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response.raise_for_status()
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data = response.json()
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if 'code' not in data:
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raise ValueError("刷新access_token失败，接口未返回code")
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code = data.get('code', 0)
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if code != 0:
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raise ValueError(f"刷新access_token失败,接口返回：{data}")
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data = data.get('data', {})
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new_access_token = data.get('access_token', '')
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new_refresh_token = data.get('refresh_token', '')
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expires_in = data.get('expires_in', 0)
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refresh_token_expires_in = data.get('refresh_token_expires_in', 0)
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new_expired_at = datetime.now(timezone.utc) + timedelta(seconds=expires_in)
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await db.execute(
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update(UserOAuth).where(
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UserOAuth.id == oauth_id,
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).values(
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access_token=new_access_token,
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refresh_token=new_refresh_token,
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access_token_expired=new_expired_at,
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refresh_token_expired=datetime.now(timezone.utc) + timedelta(seconds=refresh_token_expires_in),
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)
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)
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await db.commit()
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return new_access_token, new_expired_at
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# 有token请求
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async def request_with_token_with_context(
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self,
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oauth_id: str,
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url: str,
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method: str = 'GET',
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options: any = None,
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request_count: int = 1,
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) -> Any:
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options = options or {}
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token = await self.get_access_token(oauth_id)
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for i in range(1, request_count+1):
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# 有一些错误是触发频次管理的，需要重试
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try:
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headers = options.get('headers', {}).copy()
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headers['Access-Token'] = token
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has_files = 'files' in options
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if has_files:
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# 移除可能错误设置的 Content-Type，让库自动生成 multipart 头
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headers.pop('Content-Type', None)
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else:
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headers.setdefault('Content-Type', 'application/json')
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options['headers'] = headers
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response = await self.client.request(method, url, **options)
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response.raise_for_status()
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try:
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data = response.json()
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except json.JSONDecodeError:
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data = {'code': 0, 'data': response.text, 'msg':'JSON解析失败'}
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if 'code' not in data:
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await asyncio.sleep(i * 5)
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continue
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code = data.get('code', 0)
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if code in [40102, 40104]:
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await asyncio.sleep(i * 5)
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token = await self.get_access_token(oauth_id, force_refresh=True)
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continue
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if code in [40100, 40110]:
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wait_time = min(2 * (2 ** (i - 1)), 10)
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await asyncio.sleep(wait_time)
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continue
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if code == 50000:
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await asyncio.sleep(i * 10)
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continue
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return data
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except httpx.HTTPStatusError as e:
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await asyncio.sleep(i * 10)
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continue
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except httpx.RequestError as e:
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await asyncio.sleep(i * 10)
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continue
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res = json.dumps(data) if 'data' in locals() else ''
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options_log = {}
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if options:
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for key, value in options.items():
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if key == 'files':
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options_log[key] = {k: (v[0], 'bytes_content', v[2]) for k, v in value.items()}
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else:
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options_log[key] = value
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raise RuntimeError(
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f'DouYin API request failed after 5 retries. '
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f'url:{url};oauthId:{oauth_id};options:{json.dumps(options_log)};response:{res}'
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)
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# 无token请求
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async def request_with_context(
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self,
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url: str,
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method: str = 'GET',
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options: Optional[Dict[str, Any]] = None,
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) -> Dict[str, Any]:
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options = options or {}
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for i in range(1, 2):
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try:
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headers = options.get('headers', {}).copy()
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headers.setdefault('Content-Type', 'application/json')
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options['headers'] = headers
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response = await self.client.request(method, url, **options)
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response.raise_for_status()
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try:
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data = response.json()
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except json.JSONDecodeError:
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data = {'code': 0, 'data': response.text}
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if 'code' not in data:
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await asyncio.sleep(i * 5)
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continue
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code = data.get('code', 0)
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if code >= 50000:
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await asyncio.sleep(i * 10)
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continue
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return data
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except httpx.HTTPStatusError as e:
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await asyncio.sleep(i * 10)
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continue
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except httpx.RequestError as e:
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await asyncio.sleep(i * 10)
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continue
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res = json.dumps(data) if 'data' in locals() else ''
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raise RuntimeError(
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f'DouYin API request failed after 5 retries. '
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f'url:{url};options:{json.dumps(options)};response:{res}'
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) |