Delete main.py

main.py

@@ -1,378 +0,0 @@
-from fastapi import FastAPI, HTTPException, Header
-from fastapi.middleware.cors import CORSMiddleware
-from fastapi.responses import StreamingResponse
-from pydantic import BaseModel
-import openai
-from typing import List, Optional, Union
-import logging
-from itertools import cycle
-import asyncio
-
-import uvicorn
-
-from app import config
-import requests
-from datetime import datetime, timezone
-import json
-import httpx
-import uuid
-import time
-
-# 配置日志
-logging.basicConfig(
-    level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s"
-)
-logger = logging.getLogger(__name__)
-
-app = FastAPI()
-
-# 允许跨域
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=["*"],
-    allow_credentials=True,
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-# API密钥配置
-API_KEYS = config.settings.API_KEYS
-
-# 创建一个循环迭代器
-key_cycle = cycle(API_KEYS)
-
-# 创建两个独立的锁
-key_cycle_lock = asyncio.Lock()
-failure_count_lock = asyncio.Lock()
-
-# 添加key失败计数记录
-key_failure_counts = {key: 0 for key in API_KEYS}
-MAX_FAILURES = 10  # 最大失败次数阈值
-MAX_RETRIES = 3  # 最大重试次数
-
-
-async def get_next_key():
-    """仅获取下一个key,不检查失败次数"""
-    async with key_cycle_lock:
-        return next(key_cycle)
-
-async def is_key_valid(key):
-    """检查key是否有效"""
-    async with failure_count_lock:
-        return key_failure_counts[key] < MAX_FAILURES
-
-async def reset_failure_counts():
-    """重置所有key的失败计数"""
-    async with failure_count_lock:
-        for key in key_failure_counts:
-            key_failure_counts[key] = 0
-
-async def get_next_working_key():
-    """获取下一个可用的API key"""
-    initial_key = await get_next_key()
-    current_key = initial_key
-    
-    while True:
-        if await is_key_valid(current_key):
-            return current_key
-            
-        current_key = await get_next_key()
-        if current_key == initial_key:  # 已经循环了一圈
-            await reset_failure_counts()
-            return current_key
-
-async def handle_api_failure(api_key):
-    """处理API调用失败"""
-    async with failure_count_lock:
-        key_failure_counts[api_key] += 1
-        if key_failure_counts[api_key] >= MAX_FAILURES:
-            logger.warning(f"API key {api_key} has failed {MAX_FAILURES} times, switching to next key")
-    
-    # 在锁外获取新的key
-    return await get_next_working_key()
-
-
-class ChatRequest(BaseModel):
-    messages: List[dict]
-    model: str = "gemini-1.5-flash-002"
-    temperature: Optional[float] = 0.7
-    stream: Optional[bool] = False
-    tools: Optional[List[dict]] = []
-    tool_choice: Optional[str] = "auto"
-
-
-class EmbeddingRequest(BaseModel):
-    input: Union[str, List[str]]
-    model: str = "text-embedding-004"
-    encoding_format: Optional[str] = "float"
-
-
-async def verify_authorization(authorization: str = Header(None)):
-    if not authorization:
-        logger.error("Missing Authorization header")
-        raise HTTPException(status_code=401, detail="Missing Authorization header")
-    if not authorization.startswith("Bearer "):
-        logger.error("Invalid Authorization header format")
-        raise HTTPException(
-            status_code=401, detail="Invalid Authorization header format"
-        )
-    token = authorization.replace("Bearer ", "")
-    if token not in config.settings.ALLOWED_TOKENS:
-        logger.error("Invalid token")
-        raise HTTPException(status_code=401, detail="Invalid token")
-    return token
-
-
-def get_gemini_models(api_key):
-    base_url = "https://generativelanguage.googleapis.com/v1beta"
-    url = f"{base_url}/models?key={api_key}"
-
-    try:
-        response = requests.get(url)
-        if response.status_code == 200:
-            gemini_models = response.json()
-            return convert_to_openai_models_format(gemini_models)
-        else:
-            print(f"Error: {response.status_code}")
-            print(response.text)
-            return None
-
-    except requests.RequestException as e:
-        print(f"Request failed: {e}")
-        return None
-
-
-def convert_to_openai_models_format(gemini_models):
-    openai_format = {"object": "list", "data": []}
-
-    for model in gemini_models.get("models", []):
-        openai_model = {
-            "id": model["name"].split("/")[-1],  # 取最后一部分作为ID
-            "object": "model",
-            "created": int(datetime.now(timezone.utc).timestamp()),  # 使用当前时间戳
-            "owned_by": "google",  # 假设所有Gemini模型都由Google拥有
-            "permission": [],  # Gemini API可能没有直接对应的权限信息
-            "root": model["name"],
-            "parent": None,  # Gemini API可能没有直接对应的父模型信息
-        }
-        openai_format["data"].append(openai_model)
-
-    return openai_format
-
-
-def convert_messages_to_gemini_format(messages):
-    """Convert OpenAI message format to Gemini format"""
-    gemini_messages = []
-    for message in messages:
-        gemini_message = {
-            "role": "user" if message["role"] == "user" else "model",
-            "parts": [{"text": message["content"]}],
-        }
-        gemini_messages.append(gemini_message)
-    return gemini_messages
-
-
-def convert_gemini_response_to_openai(response, model, stream=False):
-    """Convert Gemini response to OpenAI format"""
-    if stream:
-        # 处理流式响应
-        chunk = response
-        if not chunk["candidates"]:
-            return None
-
-        return {
-            "id": "chatcmpl-" + str(uuid.uuid4()),
-            "object": "chat.completion.chunk",
-            "created": int(time.time()),
-            "model": model,
-            "choices": [
-                {
-                    "index": 0,
-                    "delta": {
-                        "content": chunk["candidates"][0]["content"]["parts"][0]["text"]
-                    },
-                    "finish_reason": None,
-                }
-            ],
-        }
-    else:
-        # 处理普通响应
-        return {
-            "id": "chatcmpl-" + str(uuid.uuid4()),
-            "object": "chat.completion",
-            "created": int(time.time()),
-            "model": model,
-            "choices": [
-                {
-                    "index": 0,
-                    "message": {
-                        "role": "assistant",
-                        "content": response["candidates"][0]["content"]["parts"][0][
-                            "text"
-                        ],
-                    },
-                    "finish_reason": "stop",
-                }
-            ],
-            "usage": {"prompt_tokens": 0, "completion_tokens": 0, "total_tokens": 0},
-        }
-
-
-@app.get("/v1/models")
-@app.get("/hf/v1/models")
-async def list_models(authorization: str = Header(None)):
-    await verify_authorization(authorization)
-    api_key = await get_next_working_key()
-    logger.info(f"Using API key: {api_key}")
-    try:
-        response = get_gemini_models(api_key)
-        logger.info("Successfully retrieved models list")
-        return response
-    except Exception as e:
-        logger.error(f"Error listing models: {str(e)}")
-        raise HTTPException(status_code=500, detail=str(e))
-
-
-@app.post("/v1/chat/completions")
-@app.post("/hf/v1/chat/completions")
-async def chat_completion(request: ChatRequest, authorization: str = Header(None)):
-    await verify_authorization(authorization)
-    api_key = await get_next_working_key()
-    logger.info(f"Chat completion request - Model: {request.model}")
-    retries = 0
-    
-    while retries < MAX_RETRIES:
-        try:
-            logger.info(f"Attempt {retries + 1} with API key: {api_key}")
-            
-            if request.model in config.settings.MODEL_SEARCH:
-                # Gemini API调用部分
-                gemini_messages = convert_messages_to_gemini_format(request.messages)
-                # 调用Gemini API
-                payload = {
-                    "contents": gemini_messages,
-                    "generationConfig": {
-                        "temperature": request.temperature,
-                    },
-                    "tools": [{"googleSearch": {}}],
-                }
-                
-                if request.stream:
-                    logger.info("Streaming response enabled")
-
-                    async def generate():
-                        nonlocal api_key, retries
-                        while retries < MAX_RETRIES:
-                            try:
-                                async with httpx.AsyncClient() as client:
-                                    stream_url = f"https://generativelanguage.googleapis.com/v1beta/models/{request.model}:streamGenerateContent?alt=sse&key={api_key}"
-                                    async with client.stream("POST", stream_url, json=payload) as response:
-                                        if response.status_code == 429:
-                                            logger.warning(f"Rate limit reached for key: {api_key}")
-                                            api_key = await handle_api_failure(api_key)
-                                            logger.info(f"Retrying with new API key: {api_key}")
-                                            retries += 1
-                                            if retries >= MAX_RETRIES:
-                                                yield f"data: {json.dumps({'error': 'Max retries reached'})}\n\n"
-                                                break
-                                            continue
-                                            
-                                        if response.status_code != 200:
-                                            logger.error(f"Error in streaming response: {response.status_code}")
-                                            yield f"data: {json.dumps({'error': f'API error: {response.status_code}'})}\n\n"
-                                            break
-                                            
-                                        async for line in response.aiter_lines():
-                                            if line.startswith("data: "):
-                                                try:
-                                                    chunk = json.loads(line[6:])
-                                                    openai_chunk = convert_gemini_response_to_openai(
-                                                        chunk, request.model, stream=True
-                                                    )
-                                                    if openai_chunk:
-                                                        yield f"data: {json.dumps(openai_chunk)}\n\n"
-                                                except json.JSONDecodeError:
-                                                    continue
-                                        yield "data: [DONE]\n\n"
-                                        return
-                            except Exception as e:
-                                logger.error(f"Stream error: {str(e)}")
-                                api_key = await handle_api_failure(api_key)
-                                retries += 1
-                                if retries >= MAX_RETRIES:
-                                    yield f"data: {json.dumps({'error': 'Max retries reached'})}\n\n"
-                                    break
-                                continue
-                                
-                    return StreamingResponse(content=generate(), media_type="text/event-stream")
-                else:
-                    # 非流式响应
-                    async with httpx.AsyncClient() as client:
-                        non_stream_url = f"https://generativelanguage.googleapis.com/v1beta/models/{request.model}:generateContent?key={api_key}"
-                        response = await client.post(non_stream_url, json=payload)
-                        gemini_response = response.json()
-                        logger.info("Chat completion successful")
-                        return convert_gemini_response_to_openai(gemini_response, request.model)
-            
-            # OpenAI API调用部分
-            client = openai.OpenAI(api_key=api_key, base_url=config.settings.BASE_URL)
-            response = client.chat.completions.create(
-                model=request.model,
-                messages=request.messages,
-                temperature=request.temperature,
-                stream=request.stream if hasattr(request, "stream") else False,
-            )
-            
-            if hasattr(request, "stream") and request.stream:
-                logger.info("Streaming response enabled")
-
-                async def generate():
-                    for chunk in response:
-                        yield f"data: {chunk.model_dump_json()}\n\n"
-                logger.info("Chat completion successful")
-                return StreamingResponse(content=generate(), media_type="text/event-stream")
-            
-            logger.info("Chat completion successful")
-            return response
-
-        except Exception as e:
-            logger.error(f"Error in chat completion: {str(e)}")
-            api_key = await handle_api_failure(api_key)
-            retries += 1
-            
-            if retries >= MAX_RETRIES:
-                logger.error("Max retries reached, giving up")
-                raise HTTPException(status_code=500, detail="Max retries reached with all available API keys")
-            
-            logger.info(f"Retrying with new API key: {api_key}")
-            continue
-
-    raise HTTPException(status_code=500, detail="Unexpected error in chat completion")
-
-
-@app.post("/v1/embeddings")
-@app.post("/hf/v1/embeddings")
-async def embedding(request: EmbeddingRequest, authorization: str = Header(None)):
-    await verify_authorization(authorization)
-    api_key = await get_next_working_key()
-    logger.info(f"Using API key: {api_key}")
-
-    try:
-        client = openai.OpenAI(api_key=api_key, base_url=config.settings.BASE_URL)
-        response = client.embeddings.create(input=request.input, model=request.model)
-        logger.info("Embedding successful")
-        return response
-    except Exception as e:
-        logger.error(f"Error in embedding: {str(e)}")
-        raise HTTPException(status_code=500, detail=str(e))
-
-
-@app.get("/health")
-@app.get("/")
-async def health_check():
-    logger.info("Health check endpoint called")
-    return {"status": "healthy"}
-
-
-if __name__ == "__main__":
-    uvicorn.run(app, host="0.0.0.0", port=8000)