nginx lua redis AB 发布

upstream backend {
		 server 127.0.0.1:8888;
	}
    #预发2
	upstream gray_backend {
		 server 127.0.0.1:8889;
	}
	
server
{
    listen 80;
    server_name hd.xx.com;
    index index.php index.html index.htm default.php default.htm default.html;
    root /www/wwwroot/hd.xx.com;
    #CERT-APPLY-CHECK--START
    # 用于SSL证书申请时的文件验证相关配置 -- 请勿删除
    include /www/server/panel/vhost/nginx/well-known/hd.shenyu.com.conf;
    #CERT-APPLY-CHECK--END

    #SSL-START SSL相关配置，请勿删除或修改下一行带注释的404规则
    #error_page 404/404.html;
    #SSL-END

    #ERROR-PAGE-START  错误页配置，可以注释、删除或修改
    error_page 404 /404.html;
    #error_page 502 /502.html;
    #ERROR-PAGE-END

    #PHP-INFO-START  PHP引用配置，可以注释或修改
    include enable-php-80.conf;
    #PHP-INFO-END

    #REWRITE-START URL重写规则引用,修改后将导致面板设置的伪静态规则失效
    include /www/server/panel/vhost/rewrite/hd.shenyu.com.conf;
    location / {
        set $upstream 'backend'; 
        access_by_lua_block {
            local redis = require "resty.redis"
            local red = redis:new()
            -- 连接到 Redis
            local ok, err = red:connect("127.0.0.1", 6380)
            if not ok then
                ngx.log(ngx.ERR, "failed to connect to Redis: ", err)
                ngx.exit(500)
            end
            -- 使用 Redis 根据用户 ID 判断是否路由到灰度环境
            local user_id = 0
            if ngx.req.get_headers()["X-User-ID"] ~= nil then
                user_id = ngx.req.get_headers()["X-User-ID"]
            end
            local is_gray = red:get("gray:" .. user_id)
            ngx.log(ngx.ERR, "is_gray value: ", is_gray)
            if is_gray == "1" then
                ngx.var.upstream = "graybackend"
                ngx.log(ngx.ERR, "ngx.var.upstream set: ", is_gray)
            end
        }
        proxy_pass http://$upstream;
    }
    location /gray {
        # 灰度环境的配置
        proxy_pass http://gray_backend;
    }
  
    #REWRITE-END

    #禁止访问的文件或目录
    location ~ ^/(\.user.ini|\.htaccess|\.git|\.env|\.svn|\.project|LICENSE|README.md)
    {
        return 404;
    }

    #一键申请SSL证书验证目录相关设置
    location ~ \.well-known{
        allow all;
    }

    #禁止在证书验证目录放入敏感文件
    if ( $uri ~ "^/\.well-known/.*\.(php|jsp|py|js|css|lua|ts|go|zip|tar\.gz|rar|7z|sql|bak)$" ) {
        return 403;
    }

    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
    {
        expires      30d;
        error_log /dev/null;
        access_log /dev/null;
    }

    location ~ .*\.(js|css)?$
    {
        expires      12h;
        error_log /dev/null;
        access_log /dev/null;
    }
    access_log  /www/wwwlogs/hd.xx.com.log;
    error_log  /www/wwwlogs/hd.xx.com.error.log;
}