70 lines
1.3 KiB
Go
70 lines
1.3 KiB
Go
package geoip
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import (
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_ "embed"
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"errors"
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"net"
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"github.com/go-kratos/kratos/v2/log"
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"github.com/oschwald/geoip2-golang"
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)
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//go:embed GeoLite2-City.mmdb
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var geoipMmdbByte []byte
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type Result struct {
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Country string // 国家
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Province string // 省
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City string // 城市
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}
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// GeoIp 地理位置解析结构体
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type GeoIp struct {
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db *geoip2.Reader
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outputLanguage string
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}
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// NewGeoIp .
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func NewGeoIp() (geoip *GeoIp, err error) {
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db, err := geoip2.FromBytes(geoipMmdbByte)
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if err != nil {
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return nil, err
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}
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return &GeoIp{db: db, outputLanguage: "zh-CN"}, nil
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}
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func (g *GeoIp) Close() (err error) {
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return g.db.Close()
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}
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// SetLanguage 设置输出的语言，默认为：zh-CN
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func (g *GeoIp) SetLanguage(code string) {
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g.outputLanguage = code
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}
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func (g *GeoIp) query(rawIP string) (city *geoip2.City, err error) {
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ip := net.ParseIP(rawIP)
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if ip == nil {
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return nil, errors.New("invalid ip")
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}
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return g.db.City(ip)
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}
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// GetAreaFromIP 通过IP获取地区
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func (g *GeoIp) GetAreaFromIP(rawIP string) (ret Result, err error) {
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record, err := g.query(rawIP)
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if err != nil {
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log.Fatal(err)
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return ret, err
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}
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ret.Country = record.Country.Names[g.outputLanguage]
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if len(record.Subdivisions) > 0 {
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ret.Province = record.Subdivisions[0].Names[g.outputLanguage]
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}
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ret.City = record.City.Names[g.outputLanguage]
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return
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}
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