132 lines
4.9 KiB
Python
132 lines
4.9 KiB
Python
# --- routers/leaf_options.py ---
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from fastapi import APIRouter, BackgroundTasks, HTTPException, Request, Body
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from fastapi.responses import StreamingResponse
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from pydantic import BaseModel
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from typing import List
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import json, asyncio, re
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import database
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from cmts_scraper import sync_cmts_leaves_async
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from shared import CMTS_DEVICE
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router = APIRouter(tags=["Options"])
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SCAN_STATUS = {}
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active_clients = {}
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async def broadcast_message(message_dict: dict, host: str):
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channel_key = host
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dead_clients = set()
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message_str = f"data: {json.dumps(message_dict)}\n\n"
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for client_queue in active_clients.get(channel_key, set()):
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try:
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await client_queue.put(message_str)
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except Exception:
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dead_clients.add(client_queue)
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for dead in dead_clients:
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active_clients[channel_key].discard(dead)
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@router.get("/cmts-leaf-options/stream")
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async def sse_stream(request: Request, host: str):
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channel_key = host
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client_queue = asyncio.Queue()
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if channel_key not in active_clients:
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active_clients[channel_key] = set()
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active_clients[channel_key].add(client_queue)
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async def event_generator():
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try:
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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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message = await asyncio.wait_for(client_queue.get(), timeout=5.0)
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yield message
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except asyncio.TimeoutError:
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yield ": keepalive\n\n"
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except asyncio.CancelledError:
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pass
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finally:
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if channel_key in active_clients:
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active_clients[channel_key].discard(client_queue)
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# ✅ 安全升級：如果該設備已經沒有任何客戶端監聽，徹底刪除 Key 釋放記憶體
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if not active_clients[channel_key]:
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del active_clients[channel_key]
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return StreamingResponse(event_generator(), media_type="text/event-stream")
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@router.get("/scan-status")
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async def get_scan_status(host: str):
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return {"is_scanning": SCAN_STATUS.get(host, False)}
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class SyncOptionsRequest(BaseModel):
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host: str
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username: str = ""
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password: str = ""
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leaf_paths: List[str]
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@router.get("/cmts-leaf-options")
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async def get_leaf_options(host: str):
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try:
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db_options = await database.get_all_leaf_options(host)
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if db_options is not None:
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metadata = await database.get_device_status(host)
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if metadata:
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db_options["__metadata__"] = metadata
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return db_options
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raise HTTPException(status_code=500, detail="資料庫連線異常")
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"資料庫讀取失敗: {e}")
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async def run_scan_task(host: str, username: str, password: str, paths: List[str]):
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global SCAN_STATUS
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channel_key = host
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try:
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await broadcast_message({"event": "scan_start"}, host)
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async for chunk in sync_cmts_leaves_async(host=host, username=username, password=password, leaf_paths=paths):
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if isinstance(chunk, str):
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await broadcast_message(json.loads(chunk), host)
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else:
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await broadcast_message(chunk, host)
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await broadcast_message({"event": "done"}, host)
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except Exception as e:
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await broadcast_message({"event": "error", "message": str(e)}, host)
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finally:
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SCAN_STATUS[channel_key] = False
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@router.post("/cmts-leaf-options/sync")
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async def sync_leaf_options(request: SyncOptionsRequest, background_tasks: BackgroundTasks):
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global SCAN_STATUS
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if not request.leaf_paths:
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raise HTTPException(status_code=400)
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channel_key = request.host
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if SCAN_STATUS.get(channel_key, False):
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return {"status": "busy", "message": "⚠️ 該設備的掃描任務正在執行中，請勿重複點擊！"}
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SCAN_STATUS[channel_key] = True
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cmts_query_paths = []
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for p in request.leaf_paths:
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clean_p = p.replace("::", " ")
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clean_p = re.sub(r"\s*\[\d+\]", "", clean_p)
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cmts_query_paths.append(clean_p)
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cmts_query_paths = list(dict.fromkeys(cmts_query_paths))
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user = request.username or CMTS_DEVICE.get("username") or ""
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pwd = request.password or CMTS_DEVICE.get("password") or ""
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background_tasks.add_task(run_scan_task, request.host, user, pwd, cmts_query_paths)
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return {"status": "started"}
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@router.post("/clear_cache")
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async def clear_specific_cache(host: str, paths_to_clear: list = Body(...)):
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try:
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cleared_count = await database.delete_leaf_options(host, paths_to_clear)
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if cleared_count >= 0:
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return {"status": "success", "cleared_count": cleared_count}
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raise HTTPException(status_code=500, detail="資料庫清除失敗")
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except Exception as e:
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raise HTTPException(status_code=500, detail=f"資料庫清除失敗: {str(e)}")
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