node解析修改nginx配置文件操作实例分析
本文实例讲述了node解析修改nginx配置文件操作。分享给大家供大家参考,具体如下:
主要是通过nginx-conf这个工具。
git地址:https://github.com/tmont/nginx-conf
具体用法:
npm install -S nginx-conf 安装工具
var NginxConfFile = require('nginx-conf').NginxConfFile; // 这个api提供了node读写conf文件的功能 NginxConfFile.create('/etc/nginx.conf', function(err, conf) { if (err) { console.log(err); return; } // 通过_value的方式读取每一个配置的值 console.log(conf.nginx.user._value); //www www console.log(conf.nginx.http.server.listen._value); //one.example.com //模块中有多个子模块,比如server中配置了多个location,通过数组下标的方式访问 console.log(conf.nginx.http.server.location[3].root._value); // /spool/www //修改配置 //create api是同步修改文件的,对于配置的修改和删除会同步反映到磁盘中 conf.on('flushed', function() { console.log('finished writing to disk'); }); //listen to the flushed event to determine when the new file has been flushed to disk conf.nginx.events.connections._value = 1000; // 这个api的用途是当配置改变时不写到磁盘中 conf.die('/etc/nginx.conf'); conf.nginx.events.connections._value = 2000; //change remains local, not in /etc/nginx.conf // 将内存中的配置写到另一个文件中 conf.live('/etc/nginx.conf.bak'); // 强行将内存中的配置刷到磁盘中 conf.flush(); // 增加和移除指令 通过 _add 和 _remove conf.nginx.http._add('add_header', 'Cache-Control max-age=315360000, public'); console.log(conf.nginx.http.add_header._value); //Cache-Control max-age=315360000, public conf.nginx.http._add('add_header', 'X-Load-Balancer lb-01'); conf.nginx.http._add('add_header', 'X-Secure true'); console.log(conf.nginx.http.add_header[0]._value); //Cache-Control max-age=315360000, public console.log(conf.nginx.http.add_header[1]._value); //X-Load-Balancer lb-01 console.log(conf.nginx.http.add_header[2]._value); //X-Secure true conf.nginx.http._remove('add_header'); //removes add_header[0] conf.nginx.http._remove('add_header', 1); //removes add_header[1] //如果只有一个带有名称的指令,会被被展开成一个属性,通过数组下表访问的将是undefined console.log(conf.nginx.http.add_header._value); //X-Load-Balancer lb-01 console.log(conf.nginx.http.add_header[0]); //undefined // 增加一个新的模块 conf.nginx.http._add('server'); conf.nginx.http.server._add('listen', '80'); //that'll create something like this: /* server { listen 80; } */ // 存在多个模块是通过数组方式访问 conf.nginx.http._add('server'); conf.nginx.http.server[1]._add('listen', '443'); /* server { listen 80; } server { listen 443; } */ // blocks with values: conf.nginx.http.server[1]._add('location', '/'); conf.nginx.http.server[1].location._add('root', '/var/www/example.com'); /* server { location / { root /var/www/example.com; } } */ // lua blocks also work, but you can't put a mismatched "{" or "}" in a comment! conf.nginx.http.location._addVerbatimBlock('rewrite_by_lua_block', '{\n\ ngx.say("this is a lua block!")\n\ res = ngx.location.capture("/memc",\n\ { args = { cmd = "incr", key = ngx.var.uri } }\n\ )\n\ }'); });
此工具同样支持对注释的修改
// 读取use配置上的注释,以数组的方式返回 console.log(conf.nginx.events.use._comments.length); // 1 console.log(conf.nginx.events.use._comments[0]); // use [ kqueue | rtsig | epoll | /dev/poll | select | poll ]; // 删除注释 conf.nginx.events.use._comments.splice(0, 1); // 添加注释 conf.nginx.event.use._comments.push('my new comment'); console.log(conf.nginx.events.use._comments.length); // 1 console.log(conf.nginx.events.use._comments[0]); //my new comment // 修改注释 conf.nginx.event.use._comments[0] = 'updated'; console.log(conf.nginx.events.use._comments[0]); //updated
注意特殊情况
foo #comment bar; console.log(conf.nginx.foo._value); //bar console.log(conf.nginx.foo._comments[0]); //comment But if the comment comes after: foo bar; #comment console.log(conf.nginx.foo._value); //bar console.log(conf.nginx.foo._comments.length); //0
希望本文所述对大家node.js程序设计有所帮助。
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