130 lines
4.6 KiB
Python
130 lines
4.6 KiB
Python
from __future__ import annotations
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import asyncio
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import json
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from typing import List, Optional
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from fastapi import APIRouter, Depends, HTTPException, Request
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from fastapi.responses import StreamingResponse
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from pydantic import BaseModel
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from ..auth_utils import verify_password
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from ..models import AuthUserORM, TaskInfo
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from ..services.task_service import (
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TASK_ACTIVE_DEFAULT_LIMIT,
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TASK_ACTIVE_MAX_LIMIT,
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TASK_LOG_DEFAULT_LIMIT,
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TASK_LOG_MAX_LIMIT,
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TASK_QUERY_MAX_OFFSET,
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task_service,
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)
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from ..auth_service import SESSION_COOKIE_NAME, get_user_by_session_token
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from ..database import AsyncSessionLocal
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from .dependencies import _require_admin
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router = APIRouter()
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class ForceCancelRequest(BaseModel):
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password: str
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@router.get("/tasks/active", response_model=List[TaskInfo])
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async def get_active_tasks(limit: int = TASK_ACTIVE_DEFAULT_LIMIT, offset: int = 0):
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"""获取当前正在运行的所有后台任务"""
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safe_limit = min(TASK_ACTIVE_MAX_LIMIT, max(1, int(limit or TASK_ACTIVE_DEFAULT_LIMIT)))
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safe_offset = min(TASK_QUERY_MAX_OFFSET, max(0, int(offset or 0)))
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orm_tasks = await task_service.get_active_tasks(limit=safe_limit, offset=safe_offset)
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return [TaskInfo.model_validate(t) for t in orm_tasks]
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@router.get("/tasks/active/stream")
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async def stream_active_tasks(request: Request):
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"""SSE 端点：每 3s 推送一次活跃任务列表，替代前端轮询。"""
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# Authenticate via Cookie at connection establishment
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token = request.cookies.get(SESSION_COOKIE_NAME)
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if token and AsyncSessionLocal:
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async with AsyncSessionLocal() as db:
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user = await get_user_by_session_token(db, token)
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if not user:
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raise HTTPException(status_code=401, detail="Authentication required.")
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elif not token:
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raise HTTPException(status_code=401, detail="Authentication required.")
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async def event_generator():
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while True:
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if await request.is_disconnected():
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break
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try:
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orm_tasks = await task_service.get_active_tasks(
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limit=TASK_ACTIVE_MAX_LIMIT, offset=0
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)
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tasks_data = [TaskInfo.model_validate(t).model_dump() for t in orm_tasks]
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yield f"data: {json.dumps(tasks_data)}\n\n"
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except Exception:
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yield "data: []\n\n"
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await asyncio.sleep(3)
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return StreamingResponse(
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event_generator(),
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media_type="text/event-stream",
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headers={
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"Cache-Control": "no-cache",
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"X-Accel-Buffering": "no",
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"Connection": "keep-alive",
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},
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)
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@router.get("/tasks/{task_id}", response_model=Optional[TaskInfo])
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async def get_task_status(task_id: str):
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"""获取特定任务的状态"""
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task = await task_service.get_task(task_id)
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if task:
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return TaskInfo.model_validate(task)
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return None
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@router.get("/tasks/{task_id}/logs")
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async def get_task_logs(task_id: str, limit: int = TASK_LOG_DEFAULT_LIMIT, offset: int = 0):
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"""获取指定任务的日志（支持 limit/offset）。"""
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task = await task_service.get_task(task_id)
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if not task:
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raise HTTPException(status_code=404, detail="任务未找到")
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safe_limit = min(TASK_LOG_MAX_LIMIT, max(1, int(limit or TASK_LOG_DEFAULT_LIMIT)))
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safe_offset = min(TASK_QUERY_MAX_OFFSET, max(0, int(offset or 0)))
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logs = await task_service.get_logs(task_id, limit=safe_limit, offset=safe_offset)
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return {
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"task_id": task_id,
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"limit": safe_limit,
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"offset": safe_offset,
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"count": len(logs),
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"logs": [
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{
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"timestamp": log.timestamp.isoformat() if log.timestamp else None,
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"level": log.log_level,
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"message": log.message,
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}
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for log in logs
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],
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}
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@router.post("/tasks/{task_id}/force-cancel")
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async def force_cancel_task(
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task_id: str,
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body: ForceCancelRequest,
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admin_user: AuthUserORM = Depends(_require_admin),
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):
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"""管理员输入密码后强制取消任务（解锁前端）"""
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if not verify_password(body.password, admin_user.password_hash):
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raise HTTPException(status_code=403, detail="密码错误")
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task = await task_service.get_task(task_id)
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if not task:
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raise HTTPException(status_code=404, detail="任务未找到")
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if task.status not in ("PENDING", "RUNNING"):
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raise HTTPException(status_code=400, detail="任务已结束，无需取消")
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await task_service.update_task(task_id, status="CANCELLED", message="管理员强制取消")
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return {"message": "任务已强制取消", "task_id": task_id}
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