geoip-service

A fast Go-Micro based microservice for looking up MaxMind GeoIP2 and GeoLite2 database.

Prerequisites

Requires a go installation.

A Database (choose one):

• Free GeoLite 2 database. Download the "MaxMind DB binary, gzipped" and unpack it.
• GeoIP2 Downloadable Database. This is a more detailed database and should be compatible, but since I don't have access to that, I have been unable to verify this.

Running the service

This service works as Go-Micro microservice. You may want to setup your own registry with MICRO_REGISTRY/MICRO_REGISTRY_ADDRESS or use other go-micro flags.

Download it

go get github.com/ProtocolONE/geoip-service

If you need it uou can rebuild proto file with protoc

protoc --proto_path=. --micro_out=. --go_out=. geoip.proto

Setup environment variable MAXMIND_GEOIP_DB_PATH with path to the maxmind database path. The path can be local file path like /application/assets/GeoLite2-City.mmdb, or it can be AWS S3 object path like s3://bucketName/GeoLite2-City.mmdb. In the latter case it is required to provide S3 access credentials with the environment variables AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY.

By default service will be executed with declared by MICRO_REGISTRY registry and GRPC as a transport.

Using Docker

The docker file in this project used to launch geoip-service in Protocol One environment. You may change it in any way you need it.

Using the service

Once the service is running you can use go-micro to make requests

package main

import (
    "context"
    "fmt"
    "github.com/ProtocolONE/geoip-service/pkg"
    "github.com/ProtocolONE/geoip-service/pkg/proto"
    "github.com/micro/go-micro"
)

func main() {
    // create a new service
    service := micro.NewService()

    // parse command line flags
    service.Init()

    // Create new greeter client
    client := proto.NewGeoIpService(geoip.ServiceName, service.Client())

    // Call it
    rsp, err := client.GetIpData(context.TODO(), &proto.GeoIpDataRequest{IP: "8.8.8.8"})
    if err != nil {
        fmt.Println(err)
    }

    // Print response
    fmt.Println(rsp)
}