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。