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maxmind.go
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maxmind.go
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package geo
import (
"fmt"
"github.com/hashicorp/go-multierror"
"github.com/jitsucom/jitsu/server/logging"
"github.com/oschwald/geoip2-golang"
"net"
)
//MaxMindResolver is a geo location data Resolver that is based on MaxMind DB data
type MaxMindResolver struct {
cityParser *geoip2.Reader
countryParser *geoip2.Reader
ispParser *geoip2.Reader
asnParser *geoip2.Reader
domainParser *geoip2.Reader
}
func newFromParser(parser *geoip2.Reader) (*MaxMindResolver, error) {
edition, err := fromString(parser.Metadata().DatabaseType)
if err != nil {
return nil, err
}
mmr := &MaxMindResolver{}
mmr.setParser(parser, edition)
return mmr, nil
}
func (mmr *MaxMindResolver) setParser(parser *geoip2.Reader, edition Edition) {
switch edition {
case GeoIP2CityEdition, GeoLite2CityEdition:
mmr.cityParser = parser
case GeoIP2CountryEdition, GeoLite2CountryEdition:
mmr.countryParser = parser
case GeoIP2ISPEdition:
mmr.ispParser = parser
case GeoIP2DomainEdition:
mmr.domainParser = parser
case GeoLite2ASNEdition:
mmr.asnParser = parser
default:
logging.SystemErrorf("Unknown edition field in geo resolver: %s", edition)
}
}
//Resolve returns location geo data (city, asn, domain) parsed from client ip address
func (mmr *MaxMindResolver) Resolve(ip string) (*Data, error) {
data := &Data{}
if ip == "" {
return nil, EmptyIP
}
parsedIP := net.ParseIP(ip)
if parsedIP == nil {
return nil, fmt.Errorf("Error parsing IP from string: %s", ip)
}
if mmr.countryParser != nil {
country, err := mmr.countryParser.Country(parsedIP)
if err != nil {
return nil, fmt.Errorf("Error parsing country geo from ip %s: %v", ip, err)
}
data.Continent = country.Continent.Names["en"]
data.Country = country.Country.IsoCode
data.CountryName = country.Country.Names["en"]
}
if mmr.cityParser != nil {
city, err := mmr.cityParser.City(parsedIP)
if err != nil {
return nil, fmt.Errorf("Error parsing city geo from ip %s: %v", ip, err)
}
data.Continent = city.Continent.Names["en"]
data.CountryName = city.Country.Names["en"]
data.Country = city.Country.IsoCode
data.City = city.City.Names["en"]
data.Lat = city.Location.Latitude
data.Lon = city.Location.Longitude
data.Zip = city.Postal.Code
if len(city.Subdivisions) > 0 {
if city.Country.IsoCode == "RU" {
data.Region = fmt.Sprintf("%s-%s", city.Country.IsoCode, city.Subdivisions[0].IsoCode)
} else {
data.Region = city.Subdivisions[0].IsoCode
}
}
}
if mmr.ispParser != nil {
isp, err := mmr.ispParser.ISP(parsedIP)
if err != nil {
return nil, fmt.Errorf("Error parsing isp geo from ip %s: %v", ip, err)
}
data.ASN = isp.AutonomousSystemNumber
data.ASO = isp.AutonomousSystemOrganization
data.Organization = isp.Organization
}
if mmr.asnParser != nil {
asn, err := mmr.asnParser.ASN(parsedIP)
if err != nil {
return nil, fmt.Errorf("Error parsing asn geo from ip %s: %v", ip, err)
}
data.ASN = asn.AutonomousSystemNumber
data.ASO = asn.AutonomousSystemOrganization
}
if mmr.domainParser != nil {
dom, err := mmr.domainParser.Domain(parsedIP)
if err != nil {
return nil, fmt.Errorf("Error parsing domain geo from ip %s: %v", ip, err)
}
data.Domain = dom.Domain
}
return data, nil
}
func (mmr *MaxMindResolver) Type() string {
return MaxmindType
}
//Close closes all parsers
func (mmr *MaxMindResolver) Close() (multiErr error) {
if mmr.cityParser != nil {
if err := mmr.cityParser.Close(); err != nil {
multiErr = multierror.Append(multiErr, err)
}
}
if mmr.countryParser != nil {
if err := mmr.countryParser.Close(); err != nil {
multiErr = multierror.Append(multiErr, err)
}
}
if mmr.ispParser != nil {
if err := mmr.ispParser.Close(); err != nil {
multiErr = multierror.Append(multiErr, err)
}
}
if mmr.asnParser != nil {
if err := mmr.asnParser.Close(); err != nil {
multiErr = multierror.Append(multiErr, err)
}
}
if mmr.domainParser != nil {
if err := mmr.domainParser.Close(); err != nil {
multiErr = multierror.Append(multiErr, err)
}
}
return
}