local commons = require("lib.commons")

local _M = {}

function _M.uuid()
    local uuid_cmd = "/usr/bin/uuid"

    if commons.file_exists(uuid_cmd) then
        local handle = io.popen(uuid_cmd)
        local result = handle:read("*a")
        local r2 = string.gsub(result, "%s+", "")
        local r3 = string.gsub(r2,"\n","")
        ngx.log(ngx.INFO, "uuid -> ", r3)
        return r3
    else
        ngx.status = 500
        ngx.log(ngx.ERR, "my_uuid *FAILED* `/usr/bin/uuid` not exists!")
        ngx.say("my_uuid *FAILED* `/usr/bin/uuid` not exists!")
        ngx.exit()
    end
end

return _M