skipper lua 脚本支持

skipper 对于lua 脚本的支持是通过gopher-lua，支持基本上大部分的lua特性
说明：项目使用docker-compose 运行

环境准备

• docker-compose 文件

version: "3"
services:
  skipper:
    image: dalongrong/skipper:latest
    ports:
    - "9090:9090"
    - "9911:9911"
    volumes:
    - "./router.eskip:/router.eskip"
    - "./app.lua:/app.lua"
    command: skipper -enable-ratelimits -enable-prometheus-metrics -routes-file router.eskip
  g:
    image: grafana/grafana
    ports:
    - "3000:3000"
  web:
    image: nginx
    ports:
    - "8099:80"
  p:
    image: prom/prometheus
    volumes:
    - "./prometheus.yml:/etc/prometheus/prometheus.yml"
    ports:
    - "9091:9090"

• router 配置

hello: Path("/report/**") ->compress("text/html")-> corsOrigin()->setResponseHeader("TOKEN","dalongdemo")->responseCookie("test-session", "abc", 31536000)->
setRequestHeader("TOKEN","dalongdemo")-> "http://10.10.17.21:9000/report";
app: Path("/**") -> lua("/app.lua", "myparam=foo", "other=bar") -> "http://10.15.0.80"

• lua 脚本
  在response 阶段，添加header

function request(ctx, params)
    -- ctx.serve({
    -- status_code=302,
    -- header={
    -- location="http://www.baidu.com/",
    -- },
    -- })
    ctx.request.header["user_token"]="request_token"
end

function response(ctx, params)
    ctx.response.header["lua_token"]="dalongdemo";
end

运行&&测试

• 启动

docker-compose up -d

• 测试
  

说明

目前已经内置了一些可用的模块 http json url base64，同时对于lua 标准模块也支持，模块查找规则
比如 require("mod")

/mod.lua, /usr/local/share/lua/5.1/mod.lua and /usr/local/share/lua/5.1/mod/init.lua)

参考资料

https://opensource.zalando.com/skipper/reference/scripts/
https://github.com/rongfengliang/skipper-prometheus-docker-compose