const VMDKDownloadManager: React.FC = () => const [loading, setLoading] = useState(false); const [activeTasks, setActiveTasks] = useState<Map<string, DownloadTask>>(new Map()); const [form] = Form.useForm();

def disconnect(self): """Close vCenter connection""" if self.connection: Disconnect(self.connection) class VMDKManager: """Manage VMDK file operations"""

Architecture Overview ┌─────────────────┐ ┌──────────────┐ ┌─────────────┐ │ Web Frontend │────▶│ API Gateway │────▶│ vSphere │ │ (React/Vue) │ │ (Python) │ │ API │ └─────────────────┘ └──────────────┘ └─────────────┘ │ ▼ ┌──────────────┐ │ Task Queue │ │ (Celery) │ └──────────────┘ 1. Backend Service (Python/FastAPI) # vmdk_download_service.py import os import asyncio import hashlib from typing import Optional, Dict, Any from fastapi import FastAPI, HTTPException, BackgroundTasks from fastapi.responses import StreamingResponse, FileResponse from pydantic import BaseModel from pyVmomi import vim, vmodl from pyVim.connect import SmartConnect, Disconnect import ssl import aiofiles from celery import Celery import redis app = FastAPI(title="VMDK Download Service") Celery configuration celery_app = Celery( 'vmdk_tasks', broker='redis://localhost:6379/0', backend='redis://localhost:6379/0' ) Request/Response Models class VMDKDownloadRequest(BaseModel): vcenter_host: str username: str password: str datastore_name: str vm_name: str vmdk_filename: str ssl_verify: bool = False

// Poll task status useEffect(() => const intervals: NodeJS.Timeout[] = [];

curl http://localhost:8000/api/v1/download/status/task_id

async def _stream_download(self, url: str): """Stream download with authentication""" import aiohttp # Create session with vCenter authentication session = aiohttp.ClientSession( auth=aiohttp.BasicAuth(self.connection._stub.cookie), connector=aiohttp.TCPConnector(verify_ssl=False) ) response = await session.get(url) return response @celery_app.task(bind=True, name="download_vmdk_task") def download_vmdk_task(self, request_data: Dict[str, Any]): """Celery task for async VMDK download""" try: # Update task state self.update_state(state="PROGRESS", meta="progress": 0, "status": "Connecting to vCenter")

setActiveTasks(prev => const newMap = new Map(prev); newMap.set(taskId, 0, message: taskData.message ); return newMap; ); // If completed, trigger download if (taskData.status === 'completed') downloadCompletedFile(taskId); catch (error) console.error('Failed to poll task status:', error);

if task.state != 'SUCCESS': raise HTTPException(status_code=404, detail="File not ready for download")

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