openrestry动态路由

mkdir /data/nginx/conf.d/ssl /data/nginx/conf.d/lua -p
#lua脚本文件
cd /data/nginx/conf.d/lua/
cat >split.lua<<EOF
function split(str, pat)
local t = {}
local fpat = "(.-)" .. pat
local last_end = 1
local s, e, cap =str:find(fpat,1)
while s do
if s ~= 1 or cap ~= "" then
table.insert(t,cap)
end
last_end = e+1
s, e, cap = str:find(fpat, last_end)
end
if last_end <= #str then
cap = str:sub(last_end)
table.insert(t, cap)
end
return t
end
function split_path(str)
return split(str,'[\\/]+')
end
EOF

#nginx 配置文件
cd /data/nginx/conf.d/
cat > require.conf <<EOF
init_worker_by_lua_file "/etc/nginx/conf.d/lua/split.lua";
server {
        listen 80;
        server_name *.com;
        index index.html index.htm index.php;
        location = /redis {
            internal;
            redis2_raw_queries $args $echo_request_body;
            redis2_pass 10.1.1.123:6379;
        }
        location / {
            set $target '';            
            access_by_lua '
        local parameters = split_path(ngx.var.uri)
        local action = parameters[1]
        local action1 = parameters[2]
        local action2 = ngx.var.host
        function LsReadis(key)
          local parser = require "redis.parser"
          local reqs = {
             {"auth", "xxxx"},
             {"get", key}
                }  
  local raw_reqs = {}
 for i, req in ipairs(reqs) do
table.insert(raw_reqs, parser.build_query(req))
  end
   local res = ngx.location.capture("/redis?" .. #reqs,
     { body = table.concat(raw_reqs, "") })
  if res.status ~= 200 or not res.body then
     ngx.log(ngx.ERR, "failed to query redis")
     ngx.exit(500)
   end
   replies = parser.parse_replies(res.body, #reqs)
     return replies[2][1]
        end
        if ngx.var.uri == "/" then
    if LsReadis("rdc-domain:"..action2) == nil then
    ngx.exit(501)
    else
       server=LsReadis("rdc-domain:"..action2)
    end
        end
       if server == "" then
          server = "www.xxx.com"
        end
       ngx.var.target = server
       ';
       resolver 8.8.8.8;
       proxy_pass http://$target;
       proxy_set_header Host $host;
       proxy_set_header  X-Real-IP        $remote_addr;
       proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
    }
}
EOF


docker run -d -p 80:80 -p 443:443 --restart=always -v `pwd`/conf.d:/etc/nginx/conf.d --name openresty openresty/openresty