#Varnish vmod for GeoMaxMind DB https://www.maxmind.com/en/home

NOTE This is for Varnish 3

I forked this to add a new feature that would allow me to work with our weather API provider, Accuweather.

Installation

This module requires the following:

Varnish cache from https://github.com/varnish/Varnish-Cache

libmaxminddb from https://github.com/maxmind/libmaxminddb

http://maxmind.github.io/MaxMind-DB/

cd /usr/local/src
git clone https://github.com/varnish/Varnish-Cache.git
cd Varnish-Cache
git branch 3.0 -t origin/3.0
git checkout 3.0
# make sure i'm matching release versions - 3.0.5 in my case.
git checkout 1a89b1f75895bbf874e83cfc6f6123737a3fd76f
./autogen.sh
./configure --prefix=/usr/local
make
make install
cd ..
git clone --recursive https://github.com/maxmind/libmaxminddb.git
cd libmaxminddb
./bootstrap
./configure --prefix=/usr/local
make 
make install
cd ..
git clone git@github.com:russellsimpkins/varnish-mmdb-vmod.git
cd varnish-mmdb-vmod
./autogen.sh
./configure --prefix=/usr --with-maxminddbfile=/mnt/mmdb/GeoIP2-City.mmdb VARNISHSRC=/usr/local/src/Varnish-Cache VMODDIR=/usr/lib64/varnish/vmods
make
make install

I added --with-maxminddbfile to autoconf so that you can decide, when you build the module, where you're data file will live. If you don't specify a value the default will be used.

#define MAX_CITY_DB "/mnt/mmdb/GeoLite2-City.mmdb"

I also modified the module to open the maxmind db file once, on Init. I found that if you open the data file with each execution you incur a significant performance impact.

This will work with the free data or the licensed data.

Example

import geo;
import std;

sub vcl_recv{
 set req.http.X-Forwarded-For = client.ip;
 std.syslog(180, geo.city(req.http.X-Forwarded-For));
 std.syslog(180, geo.country(req.http.X-Forwarded-For));
}

Testing

You can add tests in src/tests. Use src/tests/test01.vtc as an example or check out https://github.com/varnish/libvmod-example to see how their done. NOTE you will need to

cd src
make tests/*