nginx njs docker 试用

主要是基于anadeeppolavarapu/nginx-http3:edge docker 镜像，使用比较简单

环境准备

• docker-compose 文件

version: "3"

services:

    httpservice:

        image: ranadeeppolavarapu/nginx-http3:edge

        volumes:

            - "./nginx.conf:/etc/nginx/nginx.conf"

            - "./h3.nginx.conf:/etc/nginx/conf.d/h3.nginx.conf"

            - "./status.conf:/etc/nginx/conf.d/status.conf"

            - "./localhost.crt:/etc/ssl/localhost.crt"

            - "./localhost.key:/etc/ssl/localhost.key"

            - "./http.js:/opt/http.js"

        ports:

            - "443:443/tcp"

            - "443:443/udp"

            - "8080:8080"

    prome:

        image: nginx/nginx-prometheus-exporter:0.8.0

        command: -nginx.scrape-uri http://httpservice:8080/stub_status

        ports:

            - "9113:9113"

• njs 加载js配置

  js_import /opt/http.js;

  js_set $foo     http.foo;

  js_set $summary http.summary;

  include /etc/nginx/conf.d/*.conf;

• http.js

function foo(r) {

    r.log("hello from foo() handler");

    return "foo";

}

​

function summary(r) {

    var a, s, h;

​

    s = "JS summary\n\n";

​

    s += "Method: " + r.method + "\n";

    s += "HTTP version: " + r.httpVersion + "\n";

    s += "Host: " + r.headersIn.host + "\n";

    s += "Remote Address: " + r.remoteAddress + "\n";

    s += "URI: " + r.uri + "\n";

​

    s += "Headers:\n";

    for (h in r.headersIn) {

        s += "  header '" + h + "' is '" + r.headersIn[h] + "'\n";

    }

​

    s += "Args:\n";

    for (a in r.args) {

        s += "  arg '" + a + "' is '" + r.args[a] + "'\n";

    }

​

    return s;

}

​

function baz(r) {

    r.status = 200;

    r.headersOut.foo = 1234;

    r.headersOut['Content-Type'] = "text/plain; charset=utf-8";

    r.headersOut['Content-Length'] = 15;

    r.sendHeader();

    r.send("nginx");

    r.send("java");

    r.send("script");

​

    r.finish();

}

​

function hello(r) {

    r.return(200, "Hello world!");

}

​

export default {foo, summary, baz, hello};

 

 

• nginx location 配置

  location / {

      add_header X-Foo $foo;

      js_content http.baz;

  }

  location = /summary {

      default_type text/plain;

      return 200 $summary;

  }

  location = /hello {

      default_type text/plain;

      js_content http.hello;

  }

• 访问效果

 

 

说明

njs 目前来说是越来越强大了，目前就是提供的周边少点，还好是js ，我们可以使用其他工具加速生成帮助类

参考资料

http://nginx.org/en/docs/njs/node_modules.html
http://nginx.org/en/docs/http/ngx_http_js_module.html
http://nginx.org/en/docs/njs/
http://nginx.org/en/docs/njs/compatibility.html
http://nginx.org/en/docs/njs/reference.html#http_stream