297 lines
9.1 KiB
Python
297 lines
9.1 KiB
Python
from __future__ import annotations
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import os
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import requests
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import yaml
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from fastapi import Depends, FastAPI, HTTPException
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from pydantic import BaseModel
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from sqlalchemy import delete, select
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from sqlalchemy.orm import Session
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from sqlalchemy.exc import SQLAlchemyError
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app = FastAPI(title="AI CI/CD Assistant")
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def _env(name: str, default: str) -> str:
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value = os.getenv(name)
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return value if value else default
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# Example: http://host:11434/api/generate — для чата берётся тот же хост + /api/chat
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OLLAMA_API_URL = _env("OLLAMA_API_URL", "http://host.docker.internal:11434/api/generate")
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def _ollama_chat_url() -> str:
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base = OLLAMA_API_URL.replace("/api/generate", "").rstrip("/")
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return f"{base}/api/chat"
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OLLAMA_CHAT_URL = _env("OLLAMA_CHAT_URL", _ollama_chat_url())
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REQUIRE_AUTH_FOR_GENERATE = _env("REQUIRE_AUTH_FOR_GENERATE", "true").lower() in ("1", "true", "yes", "on")
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from backend.auth import ( # noqa: E402
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AUTH_VERSION,
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create_access_token,
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get_current_user,
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hash_password,
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password_needs_update,
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verify_password,
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)
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from backend.db import engine, get_db # noqa: E402
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from backend.models import Base, User, UserChatMessage # noqa: E402
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class GenerationRequest(BaseModel):
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description: str
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platform: str = "GitHub Actions" # or GitLab CI
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model: str = "codellama"
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class ChatMessageIn(BaseModel):
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role: str
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content: str
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class ChatRequest(BaseModel):
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model: str
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messages: list[ChatMessageIn]
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def validate_config(config_text: str):
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try:
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yaml.safe_load(config_text)
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return True, "Success"
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except Exception as e:
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return False, str(e)
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@app.get("/health")
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async def health():
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# lightweight DB probe to surface connection issues early
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db_ok = True
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db_error = None
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try:
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with engine.connect() as conn:
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conn.exec_driver_sql("SELECT 1")
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except Exception as e:
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db_ok = False
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db_error = str(e)
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return {"status": "ok", "db_ok": db_ok, "db_error": db_error, "auth_version": AUTH_VERSION}
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@app.on_event("startup")
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def _startup():
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# Ensure tables exist; if DB is unreachable, endpoints will surface the error.
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try:
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Base.metadata.create_all(bind=engine)
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except Exception:
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# Avoid crashing the service hard; /health will show db_error.
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pass
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class RegisterRequest(BaseModel):
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email: str
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password: str
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full_name: str | None = None
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class LoginRequest(BaseModel):
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email: str
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password: str
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@app.post("/auth/register")
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def register(req: RegisterRequest, db: Session = Depends(get_db)):
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email = req.email.strip().lower()
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if not email or not req.password:
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raise HTTPException(status_code=400, detail="Email and password are required")
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pw_bytes_len = len(req.password.encode("utf-8"))
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try:
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exists = db.execute(select(User).where(User.email == email)).scalar_one_or_none()
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if exists:
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raise HTTPException(status_code=409, detail="Email already registered")
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user = User(
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email=email,
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full_name=req.full_name.strip() if req.full_name else None,
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password_hash=hash_password(req.password),
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is_active=True,
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is_admin=False,
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)
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db.add(user)
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db.commit()
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db.refresh(user)
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return {"id": str(user.id), "email": user.email, "full_name": user.full_name, "is_admin": user.is_admin}
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except HTTPException:
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raise
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except SQLAlchemyError as e:
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db.rollback()
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raise HTTPException(status_code=500, detail=f"Database error: {str(e)}")
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except Exception as e:
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db.rollback()
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raise HTTPException(
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status_code=500,
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detail=f"Internal error: {str(e)} (password_bytes_len={pw_bytes_len})",
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)
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@app.post("/auth/login")
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def login(req: LoginRequest, db: Session = Depends(get_db)):
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email = req.email.strip().lower()
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if not req.password:
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raise HTTPException(status_code=400, detail="Password is required")
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try:
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user = db.execute(select(User).where(User.email == email)).scalar_one_or_none()
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if not user or not verify_password(req.password, user.password_hash):
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raise HTTPException(status_code=401, detail="Invalid credentials")
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if not user.is_active:
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raise HTTPException(status_code=403, detail="User is inactive")
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if password_needs_update(user.password_hash):
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user.password_hash = hash_password(req.password)
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db.add(user)
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db.commit()
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token = create_access_token(user_id=str(user.id))
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return {"access_token": token, "token_type": "bearer"}
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except HTTPException:
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raise
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except SQLAlchemyError as e:
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raise HTTPException(status_code=500, detail=f"Database error: {str(e)}")
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"Internal error: {str(e)}")
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@app.get("/auth/me")
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def me(user: User = Depends(get_current_user)):
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return {"id": str(user.id), "email": user.email, "full_name": user.full_name, "is_admin": user.is_admin}
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@app.get("/chat/history")
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def chat_history(
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limit: int = 500,
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db: Session = Depends(get_db),
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user: User | None = Depends(get_current_user) if REQUIRE_AUTH_FOR_GENERATE else None,
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):
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if user is None:
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return {"messages": []}
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lim = max(1, min(limit, 2000))
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rows = (
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db.execute(
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select(UserChatMessage)
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.where(UserChatMessage.user_id == user.id)
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.order_by(UserChatMessage.created_at.asc())
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.limit(lim)
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)
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.scalars()
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.all()
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)
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return {
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"messages": [{"role": r.role, "content": r.content} for r in rows],
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}
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@app.delete("/chat/history")
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def chat_history_clear(
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db: Session = Depends(get_db),
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user: User | None = Depends(get_current_user) if REQUIRE_AUTH_FOR_GENERATE else None,
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):
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if user is None:
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return {"ok": True}
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db.execute(delete(UserChatMessage).where(UserChatMessage.user_id == user.id))
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db.commit()
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return {"ok": True}
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@app.post("/chat")
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def chat_with_ollama(
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req: ChatRequest,
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db: Session = Depends(get_db),
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user: User | None = Depends(get_current_user) if REQUIRE_AUTH_FOR_GENERATE else None,
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):
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if not req.messages:
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raise HTTPException(status_code=400, detail="messages must not be empty")
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for m in req.messages:
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if m.role not in ("user", "assistant", "system"):
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raise HTTPException(status_code=400, detail=f"invalid role: {m.role}")
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payload = {
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"model": req.model,
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"messages": [{"role": m.role, "content": m.content} for m in req.messages],
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"stream": False,
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}
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try:
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response = requests.post(OLLAMA_CHAT_URL, json=payload, timeout=120)
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response.raise_for_status()
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data = response.json()
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msg = data.get("message") or {}
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content = msg.get("content", "")
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if not content and isinstance(data.get("response"), str):
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content = data["response"]
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if user is not None:
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last = req.messages[-1]
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if last.role == "user":
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try:
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db.add(
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UserChatMessage(
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user_id=user.id,
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role="user",
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content=last.content,
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)
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)
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db.add(
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UserChatMessage(
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user_id=user.id,
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role="assistant",
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content=content,
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)
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)
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db.commit()
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except SQLAlchemyError:
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db.rollback()
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return {"role": "assistant", "content": content}
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except requests.HTTPError as e:
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detail = e.response.text if e.response is not None else str(e)
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raise HTTPException(status_code=502, detail=f"Ollama HTTP error: {detail}")
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"Ollama error: {str(e)}")
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@app.post("/generate")
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async def generate_pipeline(
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req: GenerationRequest,
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user: User | None = Depends(get_current_user) if REQUIRE_AUTH_FOR_GENERATE else None,
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):
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prompt = (
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f"Write only a valid {req.platform} YAML configuration for: {req.description}. "
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"No explanations, just code."
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)
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payload = {"model": req.model, "prompt": prompt, "stream": False}
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try:
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response = requests.post(OLLAMA_API_URL, json=payload, timeout=60)
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response.raise_for_status()
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raw_text = response.json().get("response", "")
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clean_code = raw_text.replace("```yaml", "").replace("```", "").strip()
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is_valid, error_msg = validate_config(clean_code)
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return {
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"status": "ok" if is_valid else "error",
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"config": clean_code,
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"validation_error": error_msg if not is_valid else None,
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}
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"Ollama error: {str(e)}")
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(app, host="0.0.0.0", port=int(_env("PORT", "8000")))
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