Lua生成log文件

写了一个简单的lua脚本按照日期每天生成一个log文件,记录请求的body和相关参数

local method = ngx.var.request_method
local reqbody = ngx.decode_args(ngx.ctx.reqbody)
local msg = string.format("lualog is here... time:%s,方法类型:%s,req_body:%s,response_code:%s,response_body:%s",os.date("%X",os.time()),method,reqbody.biData,"",ngx.var.resp_body);
local file_name="local_access_"..os.date("%Y-%m-%d", os.time())..".log"
local f = assert(io.open(file_name,"a"),"读取文件失败")

msg=msg..f:seek("end")
f:write("\n"..msg)
f:flush()