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基于python的websocket开发，tomcat日志web页面实时打印监控案例
web socket 接收器：webSocket.py
相关依赖
# pip install bottle gevent gevent-websocket argparse
from bottle import request, Bottle, abortfrom geventwebsocket import WebSocketErrorfrom gevent.pywsgi import WSGIServerfrom geventwebsocket.handler import WebSocketHandlerapp = Bottle()users = set()@app.get(‘/websocket/‘)def handle_websocket(): wsock = request.environ.get(‘wsgi.websocket‘) users.add(wsock) if not wsock: abort(400, ‘Expected WebSocket request.‘) while True: try: message = wsock.receive() except WebSocketError: break print u"user:%s" % (len(users)) if message: for user in users: try: user.send(message) except WebSocketError: print u‘kill‘ users.remove(wsock)server = WSGIServer(("0.0.0.0", 1019), app,handler_class=WebSocketHandler)server.serve_forever()
服务端：logs.py
相关依赖：
pip install websocket-client
import subprocessfrom websocket import create_connectionws_server = "ws://172.18.30.19:1010/websocket/"ws = create_connection(ws_server)command=‘sshpass -p 123456 ssh 192.168.20.200 -p 32776 -o StrictHostKeychecking=no "tail -f /root/tomcat-8.0/logs/catalina.out"‘popen=subprocess.Popen(command,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True)while True: line=popen.stdout.readline().strip() ws.send(line)
应用前端：logs.html
<!DOCTYPE html><html><head> <title>LOG+</title> <style> html, body { font: normal 0.9em arial, helvetica; } #log { width: 440px; height: 200px; border: 1px solid #7F9DB9; overflow: auto; } #msg { width: 330px; } </style> <script> var socket; function init() { var host = "ws://172.18.30.19:1010/websocket/"; try { socket = new WebSocket(host); socket.onopen = function (msg) { log(‘Connected‘); }; socket.onmessage = function (msg) { log(msg.data); }; socket.onclose = function (msg) { log("Lose Connection!"); }; } catch (ex) { log(ex); } $("msg").focus(); } function send() { var txt, msg; txt = $("msg"); msg = txt.value; if (!msg) { alert("Message can not be empty"); return; } txt.value = ""; txt.focus(); try { socket.send(msg); } catch (ex) { log(ex); } } window.onbeforeunload = function () { try { socket.send(‘quit‘); socket.close(); socket = null; } catch (ex) { log(ex); } }; function $(id) { return document.getElementById(id); } function log(msg) { $("log").innerHTML += "<br>" + msg; } function onkey(event) { if (event.keyCode == 13) { send(); } } </script></head><body onl oad="init()"><h3>WebSocket</h3><br><br><div id="log"></div><input id="msg" type="textbox" onkeypress="onkey(event)"/><button onclick="send()">发送</button></body></html>
测试一把：
结束语：
前端 ——》 接收器 《—— 服务端
以需求用例为基，Case&Coding两条线并行，服务（M）&消费（VC）分离，单元、接口、功能、集成四层质量管理，自动化集成、测试、交付全程支持。 3个大阶段（需求分析阶段、研发准备阶段、研发测试阶段）16个小历程（*）确定好边界，明确好对接产物，做好服务管理。
基于python的websocket开发，tomcat日志web页面实时打印监控案例
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