实时日志查看

2018/08/31 18:09
阅读数 14

 

参考:  http://www.ttlsa.com/python/monitor-log-realtime-python-websocket/

 

  http://www.cnblogs.com/xiaoyou2018/archive/2018/07/18/9328950.html

 

  https://blog.csdn.net/devilcry13/article/details/81702147

 

  https://blog.csdn.net/s740556472/article/details/78991704

 

  https://www.cnblogs.com/shihaiming/p/6201678.html

 

 

1. websocket  server 端代码:   websocket_server.py

python  websocket_server.py  启动服务器端.

#!/usr/bin/env python
#-*- encoding: utf-8 -*-


#websocket服务端
from bottle import request, Bottle, abort
from geventwebsocket import WebSocketError
from gevent.pywsgi import WSGIServer
from geventwebsocket.handler import WebSocketHandler
app = Bottle()
users = set()
@app.get('/websocket/')
def handle_websocket():
    wsock = request.environ.get('wsgi.websocket')
    print wsock
    users.add(wsock)
    if not wsock:
        abort(400, 'Expected WebSocket request.')
    while True:
        try:
            message = wsock.receive()
        except WebSocketError:
            break
        print u"现有连接用户:%s" % (len(users))
        if message:
            for user in users:
                try:
                    user.send(message)
                except WebSocketError:
                    print u'某用户已断开连接'
    # 如果有客户端断开,则删除这个断开的websocket
    users.remove(wsock)


if __name__ == "__main__":
    server = WSGIServer(("0.0.0.0", 8100), app,handler_class=WebSocketHandler)
    server.serve_forever()

 

 

2.  查看日志,就需要信息的实时采集,采集过后发给 websocket server.,代码:    websocke_pipe.py

再服务端起动后再起》 python websocke_pipe

这里采集的是本地的日志.

#!/usr/bin/python
# encoding=utf-8


#websocket客户端
import subprocess
import time
from websocket import create_connection
# 配置远程服务器的IP,帐号,密码,端口等,因我做了双机密钥信任,所以不需要密码
# r_user = "root"
# r_passwd='jason_zhang'
# r_ip = "192.168.2.224"
# r_port = 22
r_log = "/tmp/ansible.log"   # 远程服务器要被采集的日志路径
# websocket服务端地址
ws_server = "ws://localhost:8100/websocket/"
# 执行的shell命令(使用ssh远程执行)
cmd = "/usr/bin/tailf {log_path}".format(log_path=r_log)
def tailfLog():
    """获取远程服务器实时日志,并发送到websocket服务端"""
    popen = subprocess.Popen(cmd,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True)
    print('连接成功')
    ws = create_connection(ws_server)   # 创建websocket连接
    while True:
        line = popen.stdout.readline().strip()  #获取内容
        print line
        if line:
            ws.send(line)   #把内容发送到websocket服务端
        print (time.time())
if __name__ == '__main__':
    tailfLog()

 

3.  打开HTML5  页面(也就是客户端)来连接就可以看到实时日志了.

<!DOCTYPE html>
<html>
<head>
</head>
    <body>
    <p>实时日志</p>
    <div>
        <textarea name="content" id="msg" rows="20" cols="100">
        </textarea>
    </div>
    <script src="http://libs.baidu.com/jquery/1.9.1/jquery.min.js"></script>
    <script>
    $(document).ready(function() {
        /* !window.WebSocket、window.MozWebSocket检测浏览器对websocket的支持*/
        if (!window.WebSocket) {
            if (window.MozWebSocket) {
                window.WebSocket = window.MozWebSocket;
            } else {
                $('#msg').prepend("<p>你的浏览器不支持websocket</p>");
            }
        }
        /* ws = new WebSocket 创建WebSocket的实例  注意设置对以下的websocket的地址哦*/
        ws = new WebSocket('ws://127.0.0.1:8100/websocket/');
        /*
            ws.onopen  握手完成并创建TCP/IP通道,当浏览器和WebSocketServer连接成功后,会触发onopen消息
            ws.onmessage 接收到WebSocketServer发送过来的数据时,就会触发onmessage消息,参数evt中包含server传输过来的数据;
        */
        ws.onopen = function(evt) {
            $('#msg').append('<li>websocket连接成功</li>');
        }
        ws.onmessage = function(evt) {
            $('#msg').prepend( evt.data);
        }
    });
</script>
</body>
</html>

 

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