119 lines
3.4 KiB
Python
119 lines
3.4 KiB
Python
"""
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OpenAI 兼容 API 网关
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提供统一的 /v1/chat/completions 和 /v1/models 端点
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"""
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from typing import Any, Dict
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from fastapi import APIRouter, HTTPException, Request
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from fastapi.responses import JSONResponse
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from adapters import get_adapter, get_provider_from_model
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from adapters.base import ChatCompletionRequest
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from core import get_logger
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logger = get_logger()
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router = APIRouter(tags=["OpenAI Compatible API"])
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@router.post("/chat/completions")
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async def chat_completions(request: Request):
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"""
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OpenAI 兼容的聊天补全接口
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根据请求中的 model 字段自动路由到对应的平台适配器：
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- glm-* → 智谱 GLM
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- qwen-* → 阿里云百炼
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- gpt-* / o1-* / o3-* → OpenAI
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- deepseek-* → Deepseek
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"""
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try:
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body = await request.json()
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except Exception:
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raise HTTPException(status_code=400, detail="Invalid JSON body")
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# 创建请求对象
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chat_request = ChatCompletionRequest.from_dict(body)
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model = chat_request.model
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# 根据模型名称确定平台
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provider = get_provider_from_model(model)
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logger.info(f"[Gateway] model={model} → provider={provider}")
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# 获取对应平台的适配器
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adapter = get_adapter(provider)
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if adapter is None:
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raise HTTPException(
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status_code=400,
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detail=f"Unsupported model: {model} (provider: {provider})",
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)
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# 检查适配器是否可用
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if not adapter.is_available():
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raise HTTPException(
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status_code=503,
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detail=f"Provider '{provider}' is not available (API key not configured)",
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)
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# 调用适配器处理请求
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return await adapter.chat(chat_request)
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@router.get("/models")
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async def list_models():
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"""
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返回所有可用平台的模型列表
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聚合所有已配置 API Key 的平台模型
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"""
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from adapters import get_all_adapters
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all_models = []
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for provider, adapter in get_all_adapters().items():
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if adapter.is_available():
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models = adapter.list_models()
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all_models.extend([m.to_dict() for m in models])
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return {
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"object": "list",
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"data": all_models,
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}
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@router.get("/models/{model_id}")
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async def get_model(model_id: str):
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"""
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获取特定模型信息
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"""
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from adapters import get_all_adapters
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for provider, adapter in get_all_adapters().items():
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if adapter.is_available():
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for model in adapter.list_models():
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if model.id == model_id:
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return {
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"object": "model",
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"id": model.id,
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"owned_by": model.provider,
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"data": model.to_dict(),
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}
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raise HTTPException(status_code=404, detail=f"Model not found: {model_id}")
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# 初始化时注册适配器
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def init_adapters():
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"""注册所有适配器"""
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from adapters import register_adapter
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from adapters.dashscope_adapter import DashScopeAdapter
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from adapters.glm_adapter import GLMAdapter
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from adapters.openai_adapter import DeepseekAdapter, OpenAIAdapter
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register_adapter("glm", GLMAdapter)
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register_adapter("dashscope", DashScopeAdapter)
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register_adapter("openai", OpenAIAdapter)
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register_adapter("deepseek", DeepseekAdapter)
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logger.info("[Gateway] Adapters registered: glm, dashscope, openai, deepseek") |