稍微成型点的用WEBSOCKET实现的实时日志LOG输出

import tornado.ioloop
import tornado.web
import tornado.websocket
from tornado.ioloop import IOLoop
from datetime import timedelta
import time
import os
import sys
import tornado.httpserver


class WebSocketHandler(tornado.websocket.WebSocketHandler):
    file_content = ""
    filename = "test.log"

    def open(self):
        pass

    def update_client(self):
        self.write_message(self._read_file(self.filename))

    def on_message(self, message):
        print message
        self.filename = message.split('-')[1]
        self.update_client()

    def on_close(self):
        pass

    def _read_file(self, filename):
        print filename, '================='
        with open(filename) as f:
            content = f.read()
            content_diff = content.replace(self.file_content, '')
            self.file_content = content
            return content_diff


class IndexPageHandler(tornado.web.RequestHandler):
    def get(self):
        self.render("websockets.html")


class Application(tornado.web.Application):
    def __init__(self):
        handlers = [
            (r'/', IndexPageHandler),
            (r'/ws', WebSocketHandler)
        ]
        settings = dict(
            template_path=os.path.join(os.path.dirname(__file__), "templates"),
            static_path=os.path.join(os.path.dirname(__file__), "static"),
            debug=True
        )
        tornado.web.Application.__init__(self, handlers, **settings)


if __name__ == '__main__':
    ws_app = Application()
    server = tornado.httpserver.HTTPServer(ws_app)
    server.listen(8888)
    tornado.ioloop.IOLoop.instance().start()

<title>Tornado WebSockets</title>

<link rel="stylesheet" href="/static/uikit-2.22.0/css/uikit.min.css" />
<link rel="stylesheet" href="/static/uikit-2.22.0/css/components/progress.gradient.css"/>
<link rel="stylesheet" href="/static/css/radialindicator.css"/>
<script src="/static/js/jquery-1.11.2.js"></script>
<script src="/static/js/radialIndicator.min.js"></script>
<script src="/static/uikit-2.22.0/js/uikit.js"></script>
<script src="/static/uikit-2.22.0/js/components/sticky.min.js"></script>




<div id="procPer"></div>
<br>
<textarea id="logoutput" cols="100" rows="30" placeholder="日志输出" style="background:#000; color:#FFF" >...</textarea>
<br>
<a href="javascript:void(0);" onClick="wsFunc('stop', 'DEMO')"><span id="actionSpn"  class="uk-button">停止刷新</span></a>
<script>

function GetRequest() {
       var url = location.search;
       var theRequest = new Object();
       if (url.indexOf("?") != -1) {
          var str = url.substr(1);
          strs = str.split("&");
          for(var i = 0; i < strs.length; i ++) {
             theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);
          }
       }
       return theRequest;
    }
var Request = new Object();
Request = GetRequest();
console.log(Request);
var dev_version = Request['dev_version'];
console.log(dev_version);

wsFunc("refresh", dev_version);

function wsFunc(msg, dev_version) {
        var messageContainer = document.getElementById("logoutput");
        var percentContainer = document.getElementById("procPer");


        if ("WebSocket" in window) {
            var ws = new WebSocket("ws://localhost:8888/ws");
            ws.onopen = function() {};
            ws.onmessage = function (evt) {
                messageContainer.innerHTML += evt.data;
                var d = messageContainer.scrollHeight;
                messageContainer.scrollTop = d;
                var pattern = /progress/gi;
                var ans = messageContainer.innerHTML.match(/\w+.\w+,\sdeploy\sprogress\s\d+/g);
                var dic = new Array();
                for (item in ans){
                    dic_key = ans[item].split(',')[0];
                    dic_value = ans[item].split(',')[1].split(" ")[3];
                    dic[dic_key] = dic_value;
                }
                for (key in dic) {
                    if(document.getElementById(key + "label") == undefined){
                        var span=document.createElement('span');
                        span.setAttribute("id", key + "label");
                        percentContainer.appendChild(span);
                        document.getElementById(key + "label").innerHTML = key
                    }
                    if(document.getElementById(key) == undefined){
                        var span=document.createElement('span');
                        span.setAttribute("id", key);
                        percentContainer.appendChild(span);
                        //document.getElementById(key).innerHTML =dic[key];
                        $(span).radialIndicator({
                                barColor: {
                                    10: '#0000FF',
                                    70: '#0000FF',
                                    90: '#0000FF',
                                    100: '#33CC33'
                                },
                                radius: 25,
                                barWidth: 3,
                                initValue: dic[key],
                                roundCorner : true,
                                percentage: true
                    });
                        radialObj =$(span).data('radialIndicator');

                    }
                    radialObj.animate(dic[key]);

          
                    console.log(key, dic[key]);
                }

            };
            ws.onclose = function() {};
            console.log(msg);
            if (msg == "refresh") {
                sh=setInterval(function(){
                ws.send(msg+"-"+dev_version, function(){})}
                ,2000);

            } else {
                clearInterval(sh);
                document.getElementById("actionSpn").innerText = 'OutPut';
            }
        } else {
            messageContainer.innerHTML += "此浏览器不支持websocket！";
        }
      }

</script>