github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/core/location/built_in_resolver.go (about)

     1  /*
     2   * Copyright (C) 2017 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package location
    19  
    20  import (
    21  	"github.com/mysteriumnetwork/node/core/ip"
    22  	"github.com/mysteriumnetwork/node/core/location/gendb"
    23  	"github.com/oschwald/geoip2-golang"
    24  	"github.com/pkg/errors"
    25  	"github.com/rs/zerolog/log"
    26  )
    27  
    28  //go:generate go run generator/generator.go --dbname db/GeoLite2-Country.mmdb --output gendb --compress
    29  
    30  // NewBuiltInResolver returns new db resolver initialized from built in data
    31  func NewBuiltInResolver(ipResolver ip.Resolver) (*DBResolver, error) {
    32  	log.Debug().Msg("Detecting with built-in resolver")
    33  	dbBytes, err := gendb.LoadData()
    34  	if err != nil {
    35  		return nil, errors.Wrap(err, "failed to load builtin db")
    36  	}
    37  
    38  	dbReader, err := geoip2.FromBytes(dbBytes)
    39  	if err != nil {
    40  		return nil, errors.Wrap(err, "failed to load builtin db")
    41  	}
    42  	return &DBResolver{
    43  		dbReader:   dbReader,
    44  		ipResolver: ipResolver,
    45  	}, nil
    46  }