OpenResty 基于 lua-resty-cookie 实现

openresty 安装

# cd /usr/local/src/
// 下载 openresty
# wget https://openresty.org/download/openresty-1.13.6.2.tar.gz
# tar xf openresty-1.13.6.2.tar.gz && cd openresty-1.13.6.2 && ./configure --prefix=/usr/local/openresty --with-luajit --with-pcre --with-http_iconv_module --with-http_realip_module --with-http_sub_module --with-http_stub_status_module --with-stream --with-stream_ssl_module && make build install
// 修改 nginx.conf 默认配置
# vim /usr/local/openresty/nginx/conf/nginx.conf
user  nobody;
worker_processes  1;

error_log  logs/error.log;
pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    client_max_body_size 20m;

    gzip  on;
    include /usr/local/openresty/nginx/conf/conf.d/*.conf;
}

# vim /usr/lib/systemd/system/openresty.service
[Unit]
Description=The nginx HTTP and reverse proxy server
After=network.target

[Service]
Type=forking
ExecStartPre=/usr/local/openresty/nginx/sbin/nginx -t
ExecStart=/usr/local/openresty/nginx/sbin/nginx
ExecReload=/usr/local/openresty/nginx/sbin/nginx -s reload
ExecStop=/usr/local/openresty/nginx/sbin/nginx -s stop
PrivateTmp=true

[Install]
WantedBy=multi-user.target

# mkdir -p /usr/local/openresty/nginx/conf/conf.d
# systemctl daemon-reload
# systemctl restart nginx

openresty lua-resty-cookie 实现灰度功能

# cd /usr/local/openresty/lualib/resty/
// 下载 lua-resty-cookie
# git clone https://github.com/cloudflare/lua-resty-cookie.git
// 把 cookie.lua 放在 /usr/local/openresty/lualib/resty/ 目录
# cp lua-resty-cookie/lib/resty/cookie.lua .
# ls /usr/local/openresty/lualib/resty/cookie.lua 
/usr/local/openresty/lualib/resty/cookie.lua

# vim /usr/local/openresty/nginx/conf/conf.d/lua-gray.conf
server {
    listen          8097;
    server_name     _;
    access_log      logs/lua.log main;
    index index.html index.htm;
    root /usr/local/openresty/nginx/html/;
    location /normal {
        content_by_lua_block {
            local resty_cookie = require "resty.cookie"
            local cookie, err = resty_cookie:new()
            if not cookie then
                ngx.log(ngx.ERR, err)
                return
            end

            local fields, err = cookie:get_all()
            if not fields then
                ngx.exec("@normal")
            end

            for k, v in pairs(fields) do
                if k == "grayVersion" and v == "2.4" then
                    -- ngx.say(k, " => ", v)
                    ngx.exec("@gray")
                else
                    -- ngx.say(k, " => ", v)
                    ngx.exec("@normal")
                end
            end
        }
    }

    location @normal {
        root /data/static;
    }

    location @gray {
        root /data/static/gray;
    }

}

# systemctl reload nginx

// 网站资源目录结构
# cat /data/static/normal/index.html 
normal
# cat /data/static/gray/normal/index.html 
gray


// 测试灰度效果
# curl 127.0.0.1:8097/normal/
normal
# curl --cookie 'grayVersion=1.0' 127.0.0.1:8097/normal/
normal
# curl --cookie 'grayVersion=2.4' 127.0.0.1:8097/normal/
gray