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app.py
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app.py
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import psutil
import time
from threading import Lock
from flask import Flask, render_template
from flask_socketio import SocketIO
app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO()
socketio.init_app(app)
thread = None
thread_lock = Lock()
# 后台线程 产生数据,即刻推送至前端
def background_thread():
count = 0
while True:
socketio.sleep(5)
count += 1
t = time.strftime('%M:%S', time.localtime())
# 获取系统时间(只取分:秒)
cpus = psutil.cpu_percent(interval=None, percpu=True)
# 获取系统cpu使用率 non-blocking
socketio.emit('server_response',
{'data': [t, cpus], 'count': count},
namespace='/test')
socketio.emit('messageEventNew',
{'encryptkey':'key'},
namespace='/test')
# 注意:这里不需要客户端连接的上下文,默认 broadcast = True
@app.route('/')
def index():
return render_template('index.html', async_mode=socketio.async_mode)
@socketio.on('connect', namespace='/test')
def test_connect():
print('connect')
global thread
with thread_lock:
if thread is None:
thread = socketio.start_background_task(target=background_thread)
@socketio.on('onMessageArrive', namespace='/test')
def test_connect():
print('onMessageArrive')
if __name__ == '__main__':
# 只能点击main运行,flask项目修改不了host,新增pure项目拷贝代码即可
socketio.run(app, host='10.10.9.74', port=5000, debug=True)