网络设备管理(广播点名机制)

深藏阁楼爱情的钟 2021-10-24 04:38 286阅读 0赞

1、采用的方案，资源

1)Flask-SocketIO

[https://github.com/miguelgrinberg/Flask-SocketIO][https_github.com_miguelgrinberg_Flask-SocketIO]

2）python-socketio-client

[https://github.com/veo-labs/python-socketio-client][https_github.com_veo-labs_python-socketio-client]

3) nodejs client

[https://github.com/socketio/socket.io-client][https_github.com_socketio_socket.io-client]

4）jquery渲染(文本/字符串)

<!DOCTYPE HTML>
    <html>
    <head>
    <script type="text/javascript" src="jquery-1.11.2.js"></script>
    <script type="text/javascript">
        $(function(){
            $("#testAjax").click(function(){
                  htmlobj=$.ajax({url:"tmp.txt",async:false});
                  $("#myDiv").html(htmlobj.responseText.replace(/\n/g,"<br/>"));
             });
        });
    </script>    
    </head>
        <body>
            <div id="myDiv"><h2>AJAX test</h2></div>
            <button id="testAjax" type="button">Ajax test</button>
        </body>
    </html>

linux
    $("#myDiv").html(htmlobj.responseText.replace(/\n/g,"<br/>")); windows
    $("#myDiv").html(htmlobj.responseText.replace(/\r\n/g,"<br/>")

linux/windows都支持需要处理一下

<!DOCTYPE HTML>
    <html>
    <head>
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.11.2.min.js"></script>
    <script type="text/javascript">
        $(function(){
            $("#testAjax").click(function(){
                  htmlobj=$.ajax({url:"tmp",async:false});
                    var i; 
                    var result = "";
                    var c; 
                    for (i = 0; i < htmlobj.responseText.length; i++) {
                        c = htmlobj.responseText.substr(i, 1);
                        if ( c == "\n")
                            result = result + "</br>";
                        else if (c != "\r")
                            result = result + c;
                     }
                  $("#myDiv").html(result);
             });
        });
    </script>    
    </head>
        <body>
            <div id="myDiv"><h2>AJAX test </h2></div>
            <button id="testAjax" type="button">Ajax test</button>
        </body>
    </html>

2）架构分析

七拼八凑，就实现了远程设备管理(广播点名机制)，如图片中的admin——proxy server —— client ，看起来似乎内容涉及很多，但是每个模块实现的核心代码也就10来20行，完全实现功能也就50行左右吧。

![388995-20181008195905874-383624719.png][]

admin实例是Flask-SocketIO中的网页模板，proxy server实例也就是Flask-SocketIO，client实例是python-socketio-client

client实例是运行在终端设备上的，可以是其他各种平台程序，比如c, python, nodejs等等

1)python client

[https://pypi.org/project/python-socketio-client/1.1/][https_pypi.org_project_python-socketio-client_1.1]

pip install python-socketio-client

from socketio_client.manager import Manager
    import commands
    import gevent
    from gevent import monkey
    monkey.patch_socket()
    
    import logging
    logging.basicConfig(level=logging.WARNING)
    
    dev_id = '13210000'
    
    #connect server
    io = Manager('http', 'localhost', 5000, auto_connect=False)
    chat = io.socket('/test')
    
    @chat.on('test_event')
    def test_message(message):
        #print(message)
            
        if message['id'] == dev_id:
    
            if message['data'] == 'gps':
                output = {
        'lat':0,'lon':0}
            elif message['data'] == 'battery':
                output = {
        'battery':0}
            else:
                return_code, output = commands.getstatusoutput(message['data'])
    print(output)
        chat.emit('ehco_event', {
        'id': message['id'],'data': output})
    
    @chat.on_connect()
    def on_connect():
        chat.emit('ehco_event', {
        'id': dev_id,'data': 'connected'})
    
    chat.connect()
    gevent.wait()

python调用shell

[https://www.cnblogs.com/snow-backup/p/5035792.html][https_www.cnblogs.com_snow-backup_p_5035792.html]

socket client还有些其他库

[https://github.com/invisibleroads/socketIO-client][https_github.com_invisibleroads_socketIO-client]

[https://github.com/ziyasal/socket.io-python-emitter][https_github.com_ziyasal_socket.io-python-emitter]

[https://github.com/abourget/gevent-socketio/tree/master/examples/flask\_chat][https_github.com_abourget_gevent-socketio_tree_master_examples_flask_chat]

2) nodejs client

[https://github.com/socketio/socket.io-client][https_github.com_socketio_socket.io-client]

npm install socket.io-client

nodejs调用shell指令

[http://www.ruanyifeng.com/blog/2015/05/command-line-with-node.html][http_www.ruanyifeng.com_blog_2015_05_command-line-with-node.html]

3、其他参考设计

[https://github.com/pallets/flask][https_github.com_pallets_flask]

[https://github.com/heroku-python/flask-sockets][https_github.com_heroku-python_flask-sockets]

[https://github.com/miguelgrinberg/flasky][https_github.com_miguelgrinberg_flasky]

转载于:https://www.cnblogs.com/dong1/p/9754767.html

[https_github.com_miguelgrinberg_Flask-SocketIO]: https://github.com/miguelgrinberg/Flask-SocketIO
[https_github.com_veo-labs_python-socketio-client]: https://github.com/veo-labs/python-socketio-client
[https_github.com_socketio_socket.io-client]: https://github.com/socketio/socket.io-client
[388995-20181008195905874-383624719.png]: /images/20211023/8ebef7ac384342148b7ff6ab32f9c796.png
[https_pypi.org_project_python-socketio-client_1.1]: https://pypi.org/project/python-socketio-client/1.1/
[https_www.cnblogs.com_snow-backup_p_5035792.html]: https://www.cnblogs.com/snow-backup/p/5035792.html
[https_github.com_invisibleroads_socketIO-client]: https://github.com/invisibleroads/socketIO-client
[https_github.com_ziyasal_socket.io-python-emitter]: https://github.com/ziyasal/socket.io-python-emitter
[https_github.com_abourget_gevent-socketio_tree_master_examples_flask_chat]: https://github.com/abourget/gevent-socketio/tree/master/examples/flask_chat
[http_www.ruanyifeng.com_blog_2015_05_command-line-with-node.html]: http://www.ruanyifeng.com/blog/2015/05/command-line-with-node.html
[https_github.com_pallets_flask]: https://github.com/pallets/flask
[https_github.com_heroku-python_flask-sockets]: https://github.com/heroku-python/flask-sockets
[https_github.com_miguelgrinberg_flasky]: https://github.com/miguelgrinberg/flasky