yi
184 lines
6.8 KiB
Python
184 lines
6.8 KiB
Python
import json
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import os
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from typing import List, Optional, Dict, Any
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from fastapi import APIRouter, HTTPException, Depends, status
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from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
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from jose import jwt, JWTError
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from pydantic import BaseModel, Field
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from app.core.security import SECRET_KEY, ALGORITHM
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from app.core.data_root import get_data_root
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from app.core.llm_provider import build_llm_provider
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router = APIRouter()
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security = HTTPBearer()
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DATA_FILE = str(get_data_root() / "llm_config.json")
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class CurrentUser(BaseModel):
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id: int
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username: str
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is_admin: bool = False
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class LLMConfig(BaseModel):
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id: str = Field(..., description="Unique identifier for the LLM configuration")
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name: Optional[str] = Field(None, description="Display name")
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provider: str = Field(..., description="Provider name (e.g., openai, azure, anthropic)")
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model: str = Field(..., description="Model name (e.g., gpt-4, claude-3-opus)")
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api_key: Optional[str] = Field(None, description="API Key for the provider")
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api_base: Optional[str] = Field(None, description="Base URL for the API")
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extra_headers: Optional[Dict[str, str]] = Field(None, description="Extra headers for the request")
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is_active: bool = Field(True, description="Whether this configuration is active")
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class LLMConfigCreate(BaseModel):
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id: str
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name: Optional[str] = None
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provider: str
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model: str
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api_key: Optional[str] = None
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api_base: Optional[str] = None
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extra_headers: Optional[Dict[str, str]] = None
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is_active: bool = True
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class LLMConfigUpdate(BaseModel):
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name: Optional[str] = None
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provider: Optional[str] = None
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model: Optional[str] = None
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api_key: Optional[str] = None
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api_base: Optional[str] = None
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extra_headers: Optional[Dict[str, str]] = None
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is_active: Optional[bool] = None
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class TestConnectionRequest(BaseModel):
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provider: str
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model: str
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api_key: Optional[str] = None
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api_base: Optional[str] = None
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extra_headers: Optional[Dict[str, str]] = None
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def get_current_user(credentials: HTTPAuthorizationCredentials = Depends(security)) -> CurrentUser:
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unauthorized = HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid authentication credentials",
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)
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try:
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payload = jwt.decode(credentials.credentials, SECRET_KEY, algorithms=[ALGORITHM])
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except JWTError:
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raise unauthorized
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user_id = payload.get("id")
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username = payload.get("sub")
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is_admin = bool(payload.get("is_admin", False))
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if user_id is None or username is None:
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raise unauthorized
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return CurrentUser(id=user_id, username=username, is_admin=is_admin)
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def get_admin_user(current_user: CurrentUser = Depends(get_current_user)) -> CurrentUser:
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if not current_user.is_admin:
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raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Admin permission required")
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return current_user
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def _load_data() -> List[Dict[str, Any]]:
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if not os.path.exists(DATA_FILE):
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return []
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try:
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with open(DATA_FILE, "r") as f:
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return json.load(f)
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except json.JSONDecodeError:
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return []
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def _save_data(data: List[Dict[str, Any]]):
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os.makedirs(os.path.dirname(DATA_FILE), exist_ok=True)
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with open(DATA_FILE, "w") as f:
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json.dump(data, f, indent=2)
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def _sanitize_config(item: Dict[str, Any], is_admin: bool) -> Dict[str, Any]:
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config = item.copy()
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if not is_admin:
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config["api_key"] = None
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return config
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@router.get("/llm", response_model=List[LLMConfig])
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def list_llm_configs(current_user: CurrentUser = Depends(get_current_user)):
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data = _load_data()
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return [LLMConfig(**_sanitize_config(item, current_user.is_admin)) for item in data]
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@router.get("/llm/{config_id}", response_model=LLMConfig)
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def get_llm_config(config_id: str, current_user: CurrentUser = Depends(get_current_user)):
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data = _load_data()
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for item in data:
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if item["id"] == config_id:
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return LLMConfig(**_sanitize_config(item, current_user.is_admin))
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raise HTTPException(status_code=404, detail="LLM configuration not found")
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@router.post("/llm", response_model=LLMConfig)
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def create_llm_config(config: LLMConfigCreate, _: CurrentUser = Depends(get_admin_user)):
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data = _load_data()
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if any(item["id"] == config.id for item in data):
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raise HTTPException(status_code=400, detail="LLM configuration with this ID already exists")
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new_config = config.dict()
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if new_config.get("is_active"):
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for item in data:
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item["is_active"] = False
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data.append(new_config)
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_save_data(data)
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return LLMConfig(**new_config)
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@router.put("/llm/{config_id}", response_model=LLMConfig)
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def update_llm_config(config_id: str, config: LLMConfigUpdate, _: CurrentUser = Depends(get_admin_user)):
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data = _load_data()
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for i, item in enumerate(data):
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if item["id"] == config_id:
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updated_item = item.copy()
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update_data = config.dict(exclude_unset=True)
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if update_data.get("is_active"):
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for j in range(len(data)):
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data[j]["is_active"] = False
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updated_item.update(update_data)
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data[i] = updated_item
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_save_data(data)
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return LLMConfig(**updated_item)
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raise HTTPException(status_code=404, detail="LLM configuration not found")
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@router.delete("/llm/{config_id}")
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def delete_llm_config(config_id: str, _: CurrentUser = Depends(get_admin_user)):
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data = _load_data()
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initial_len = len(data)
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data = [item for item in data if item["id"] != config_id]
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if len(data) == initial_len:
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raise HTTPException(status_code=404, detail="LLM configuration not found")
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_save_data(data)
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return {"message": "LLM configuration deleted successfully"}
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@router.post("/llm/test")
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async def test_connection(request: TestConnectionRequest, _: CurrentUser = Depends(get_admin_user)):
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try:
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provider = build_llm_provider(
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model=request.model.strip(),
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provider=request.provider,
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api_key=request.api_key,
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api_base=request.api_base,
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extra_headers=request.extra_headers,
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)
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response = await provider.chat(
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messages=[{"role": "user", "content": "Hello"}],
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max_tokens=5,
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temperature=0,
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)
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if response.finish_reason == "error":
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raise ValueError(response.content or "Unknown provider error")
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return {
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"success": True,
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"message": "Connection successful",
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"details": {
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"content": response.content,
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"finish_reason": response.finish_reason,
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"usage": response.usage,
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},
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}
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except Exception as e:
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raise HTTPException(status_code=400, detail=f"Connection failed: {str(e)}")
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