How to insert my custom data

[intfish123]

I rewrote my code like this, But it still doesn't work, you can try it:

writer, err := mmdbwriter.New(
	mmdbwriter.Options{
		DatabaseType: "GeoLite2-City",
			RecordSize: 24,
			IPVersion: 4,
			IncludeReservedNetworks: true,
			Languages: []string{"zh-CN"},
	},
)
if err != nil {
	return err
}

nameId := 0
for i:=0; i<len(customData); i++ {
	record := mmdbtype.Map{}
	record["continent"] = mmdbtype.Map{
		"geoname_id": mmdbtype.Uint64(nameId),
		"code": mmdbtype.String(""),
		"names":mmdbtype.Map{"zh-CN": mmdbtype.String("")},
	}
	nameId++

	record["country"] = mmdbtype.Map{
		"geoname_id": mmdbtype.Uint64(nameId),
		"iso_code": mmdbtype.String(""),
		"names":mmdbtype.Map{"zh-CN": mmdbtype.String(customData[i].Country)},
	}
	nameId++

	record["subdivisions"] = mmdbtype.Slice{
		mmdbtype.Map{
			"geoname_id": mmdbtype.Uint64(nameId),
			"iso_code": mmdbtype.String(""),
			"names":mmdbtype.Map{"zh-CN": mmdbtype.String(customData[i].Province)},
	  },
	}
	nameId++

	record["city"] = mmdbtype.Map{
		"geoname_id": mmdbtype.Uint64(nameId),
		"names":mmdbtype.Map{"zh-CN": mmdbtype.String(customData[i].City)},
	}
	nameId++

	record["county"] = mmdbtype.Map{
		"geoname_id": mmdbtype.Uint64(nameId),
		"names":mmdbtype.Map{"zh-CN": mmdbtype.String(customData[i].County)},
	}
	nameId++

	record["location"] = mmdbtype.Map{
		"accuracy_radius": mmdbtype.Uint16(0),
		"latitude": mmdbtype.Float64(0),
		"longitude": mmdbtype.Float64(0),
		"metro_code": mmdbtype.Uint64(0),
		"time_zone": mmdbtype.String(""),
	}
	nameId++

	record["postal"] = mmdbtype.Map{
		"code": mmdbtype.String(""),
	}
	nameId++

	record["registered_country"] = mmdbtype.Map{
		"geoname_id": mmdbtype.Uint64(nameId),
		"is_in_european_union": mmdbtype.Bool(false),
		"iso_code": mmdbtype.String(""),
		"names": mmdbtype.Map{"zh-CN": mmdbtype.String("")},
	}
	nameId++

	record["represented_country"] = mmdbtype.Map{
		"geoname_id": mmdbtype.Uint64(nameId),
		"is_in_european_union": mmdbtype.Bool(false),
		"iso_code": mmdbtype.String(""),
		"type": mmdbtype.String(""),
		"names": mmdbtype.Map{"zh-CN": mmdbtype.String("")},
	}
	nameId++

	tmpIp := net.ParseIP(customData[i].ipVal)
	writer.Insert(&net.IPNet{IP: tmpIp, Mask: tmpIp.DefaultMask()}, record)
}
fh, err := os.Create("out/out.mmdb")
if err != nil {
	log.Fatal(err)
}
_, err = dbWriter.WriteTo(fh)
if err != nil {
	log.Fatal(err)
}

[intfish123]

I read the db use this lib: github.com/oschwald/geoip2-golang v1.7.0

[oschwald]

Your code is not complete as is and I am not able to run it. At a glance, I don't see anything obviously wrong. I would suggest comparing the structure of records in the database you generated with a MaxMind one using mmdblookup from libmaxminddb. I am closing this as I don't see any evidence there is a problem with mmdbwriter.

[intfish123]

Your code is not complete as is and I am not able to run it. At a glance, I don't see anything obviously wrong. I would suggest comparing the structure of records in the database you generated with a MaxMind one using mmdblookup from libmaxminddb. I am closing this as I don't see any evidence there is a problem with mmdbwriter.

Yep, you are right, I have found what's the my problem, &net.IPNet{IP: tmpIp, Mask: tmpIp.DefaultMask()} is not correct for *IPNet. Thanks you very much.