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>