100 lines
3.1 KiB
Python
100 lines
3.1 KiB
Python
import uvicorn
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from fastapi import FastAPI, WebSocket, WebSocketDisconnect, Request, Depends, HTTPException
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from fastapi.responses import HTMLResponse
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from ObjectManager import ConnectionManager, TaskManager, ServerManager, Task
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from typing import List
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'''
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1. 创建一个任务, 则分发任务给worker节点
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2. 客户端建立一个websocket连接, 提供所有的任务的状态更新
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'''
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html = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>Chat</title>
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</head>
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<body>
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<h1>WebSocket Chat</h1>
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<h2>Your ID: <span id="ws-id"></span></h2>
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<form action="" onsubmit="sendMessage(event)">
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<input type="text" id="messageText" autocomplete="off"/>
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<button>Send</button>
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</form>
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<ul id='messages'>
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</ul>
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<script>
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var client_id = Date.now()
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document.querySelector("#ws-id").textContent = client_id;
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var ws = new WebSocket(`ws://localhost:8000/ws/${client_id}`);
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ws.onmessage = function(event) {
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var messages = document.getElementById('messages')
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var message = document.createElement('li')
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var content = document.createTextNode(event.data)
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message.appendChild(content)
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messages.appendChild(message)
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};
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function sendMessage(event) {
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var input = document.getElementById("messageText")
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ws.send(input.value)
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input.value = ''
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event.preventDefault()
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}
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</script>
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</body>
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</html>
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"""
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app = FastAPI()
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@app.get("/")
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async def get():
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return HTMLResponse(html)
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connection_manager = ConnectionManager()
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task_manager = TaskManager()
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# 接收客户端的websocket连接
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@app.websocket("/ws/{client_id}")
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async def websocket_endpoint(websocket: WebSocket, client_id: int):
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# TODO: 验证客户端的身份(使用TOKEN)
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# 获取TOKEN (从数据库中获取用户的信息)
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# token = request.headers.get('Authorization')
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# if token is None:
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# raise HTTPException(status_code=401, detail="Unauthorized")
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await connection_manager.connect(websocket=websocket, client_id=client_id)
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try:
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while True:
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data = await websocket.receive_text()
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await connection_manager.send_personal_message(f"You wrote: {data}", client_id=client_id)
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await connection_manager.broadcast(f"Client #{client_id} says: {data}")
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# TODO: 处理客户端的请求变化(理论上并没有)
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except WebSocketDisconnect:
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connection_manager.disconnect(client_id=client_id)
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await connection_manager.broadcast(f"Client #{client_id} left the chat")
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# 通知所有的ws客户端
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@app.post("/notify")
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async def notify():
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pass
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@app.get("/tasks", response_model=List[Task])
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async def get_tasks():
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return task_manager.query_all()
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@app.post("/tasks", response_model=Task)
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async def create_task(task: Task):
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return task_manager.add(task)
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# 维护一个任务队列, 任务队列中的任务会被分发给worker节点
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# 任务状态变化时通知对应的客户端
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