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| import random | |
| import re | |
| import os | |
| import logging | |
| import asyncio | |
| from datetime import datetime, timedelta | |
| from apscheduler.schedulers.background import BackgroundScheduler | |
| from app.utils.logging import format_log_message | |
| import app.config.settings as settings | |
| logger = logging.getLogger("my_logger") | |
| class APIKeyManager: | |
| def __init__(self): | |
| self.api_keys = re.findall( | |
| r"AIzaSy[a-zA-Z0-9_-]{33}", settings.GEMINI_API_KEYS) | |
| # 加载更多 GEMINI_API_KEYS | |
| for i in range(1, 99): | |
| if keys := os.environ.get(f"GEMINI_API_KEYS_{i}", ""): | |
| self.api_keys += re.findall(r"AIzaSy[a-zA-Z0-9_-]{33}", keys) | |
| else: | |
| break | |
| self.key_stack = [] # 初始化密钥栈 | |
| self._reset_key_stack() # 初始化时创建随机密钥栈 | |
| self.scheduler = BackgroundScheduler() | |
| self.scheduler.start() | |
| self.lock = asyncio.Lock() # Added lock | |
| def _reset_key_stack(self): | |
| """创建并随机化密钥栈""" | |
| shuffled_keys = self.api_keys[:] # 创建 api_keys 的副本以避免直接修改原列表 | |
| random.shuffle(shuffled_keys) | |
| self.key_stack = shuffled_keys | |
| async def get_available_key(self): | |
| """从栈顶获取密钥，若栈空则重新生成 | |
| 实现负载均衡： | |
| 1. 维护一个随机排序的栈存储apikey | |
| 2. 每次调用从栈顶取出一个key返回 | |
| 3. 栈空时重新随机生成栈 | |
| 4. 确保异步和并发安全 | |
| """ | |
| async with self.lock: | |
| # 如果栈为空，重新生成 | |
| if not self.key_stack: | |
| self._reset_key_stack() | |
| # 从栈顶取出key | |
| if self.key_stack: | |
| return self.key_stack.pop() | |
| # 如果没有可用的API密钥，记录错误 | |
| if not self.api_keys: | |
| log_msg = format_log_message('ERROR', "没有配置任何 API 密钥！") | |
| logger.error(log_msg) | |
| log_msg = format_log_message('ERROR', "没有可用的API密钥！") | |
| logger.error(log_msg) | |
| return None | |
| def show_all_keys(self): | |
| log_msg = format_log_message('INFO', f"当前可用API key个数: {len(self.api_keys)} ") | |
| logger.info(log_msg) | |
| for i, api_key in enumerate(self.api_keys): | |
| log_msg = format_log_message('INFO', f"API Key{i}: {api_key[:8]}...{api_key[-3:]}") | |
| logger.info(log_msg) | |
| # def blacklist_key(self, key): | |
| # log_msg = format_log_message('WARNING', f"{key[:8]} → 暂时禁用 {self.api_key_blacklist_duration} 秒") | |
| # logger.warning(log_msg) | |
| # self.api_key_blacklist.add(key) | |
| # self.scheduler.add_job(lambda: self.api_key_blacklist.discard(key), 'date', | |
| # run_date=datetime.now() + timedelta(seconds=self.api_key_blacklist_duration)) | |
| async def test_api_key(api_key: str) -> bool: | |
| """ | |
| 测试 API 密钥是否有效。 | |
| """ | |
| try: | |
| import httpx | |
| url = "https://generativelanguage.googleapis.com/v1beta/models?key={}".format(api_key) | |
| async with httpx.AsyncClient() as client: | |
| response = await client.get(url) | |
| response.raise_for_status() | |
| return True | |
| except Exception: | |
| return False | |