running code only on nginx startup

ron · 2013-10-18T03:57:00+00:00

Hello! On Wed, Oct 16, 2013 at 11:42 PM, wrote: > If Nginx got updated (like some modification ) then how can i update Nginx > in the openresty ?Is...

running code only on nginx startup

ron

Hello,

I've installed openresty and i want to add the ability to convert the request ip to country name.

I've used lua-geoip rock and the following code works:

-- initialization

local geoip = require "geoip"

local geoip_country = require 'geoip.country'

local geoip_country_filename = "/path/to/GeoIP.dat"

local geodb = geoip_country.open(geoip_country_filename)

-- query for country name

local country = geodb:query_by_addr(ngx.var.remote_addr, "id")

---- finalization

geodb:close()

As you can see i need to open and close a file. Is there anyway i can make the initialization and finalization part of the code run only once (on nginx startup or something?) and access the geodb object in each request just to query the country?

Thanks!

agentzh

Hello!

On Thu, Oct 17, 2013 at 6:15 AM,  <r...@ftbpro.com> wrote:
> I've installed openresty and i want to add the ability to convert the
> request ip to country name.
> I've used lua-geoip rock and the following code works:
>
[...]
>
> As you can see i need to open and close a file. Is there anyway i can make
> the initialization and finalization part of the code run only once  (on
> nginx startup or something?) and access the geodb object in each request
> just to query the country?
>

You can use init_by_lua for it. See

    https://github.com/chaoslawful/lua-nginx-module#init_by_lua

Preferably in a custom Lua module at the same time. See

    https://github.com/chaoslawful/lua-nginx-module#data-sharing-within-an-nginx-worker

BTW, please join this list before posting, otherwise your posts always
require manual moderation, which is tedious. Thank you for your
cooperation!

Regards,
-agentzh