github.com/Jeffail/benthos/v3@v3.65.0/internal/impl/maxmind/bloblang_geoip.go (about)

     1  package maxmind
     2  
     3  import (
     4  	"bytes"
     5  	"encoding/json"
     6  	"fmt"
     7  	"net"
     8  
     9  	"github.com/Jeffail/benthos/v3/internal/bloblang/query"
    10  	"github.com/Jeffail/benthos/v3/public/bloblang"
    11  	"github.com/oschwald/geoip2-golang"
    12  )
    13  
    14  func registerMaxmindMethodSpec(name, entity string, fn func(*geoip2.Reader, net.IP) (interface{}, error)) {
    15  	if err := bloblang.RegisterMethodV2(name,
    16  		bloblang.NewPluginSpec().
    17  			Category(string(query.MethodCategoryGeoIP)).
    18  			Description(fmt.Sprintf("EXPERIMENTAL: Looks up an IP address against a [MaxMind database file](https://www.maxmind.com/en/home) and, if found, returns an object describing the %v associated with it.", entity)).
    19  			Param(bloblang.NewStringParam("path").Description("A path to an mmdb (maxmind) file.")),
    20  		func(args *bloblang.ParsedParams) (bloblang.Method, error) {
    21  			path, err := args.GetString("path")
    22  			if err != nil {
    23  				return nil, err
    24  			}
    25  			db, err := geoip2.Open(path)
    26  			if err != nil {
    27  				return nil, err
    28  			}
    29  			return bloblang.StringMethod(func(s string) (interface{}, error) {
    30  				ip := net.ParseIP(s)
    31  				if ip == nil {
    32  					return nil, fmt.Errorf("value %v does not appear to be a valid v4 or v6 IP address", s)
    33  				}
    34  				v, err := fn(db, ip)
    35  				if err != nil {
    36  					return nil, err
    37  				}
    38  				jBytes, err := json.Marshal(v)
    39  				if err != nil {
    40  					return nil, err
    41  				}
    42  				dec := json.NewDecoder(bytes.NewReader(jBytes))
    43  				dec.UseNumber()
    44  				var gV interface{}
    45  				err = dec.Decode(&gV)
    46  				return gV, err
    47  			}), nil
    48  		}); err != nil {
    49  		panic(err)
    50  	}
    51  }
    52  
    53  func init() {
    54  	registerMaxmindMethodSpec("geoip_city", "city", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    55  		return db.City(ip)
    56  	})
    57  
    58  	registerMaxmindMethodSpec("geoip_country", "country", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    59  		return db.Country(ip)
    60  	})
    61  
    62  	registerMaxmindMethodSpec("geoip_asn", "ASN", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    63  		return db.ASN(ip)
    64  	})
    65  
    66  	registerMaxmindMethodSpec("geoip_enterprise", "enterprise", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    67  		return db.Enterprise(ip)
    68  	})
    69  
    70  	registerMaxmindMethodSpec("geoip_anonymous_ip", "anonymous IP", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    71  		return db.AnonymousIP(ip)
    72  	})
    73  
    74  	registerMaxmindMethodSpec("geoip_connection_type", "connection type", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    75  		return db.ConnectionType(ip)
    76  	})
    77  
    78  	registerMaxmindMethodSpec("geoip_domain", "domain", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    79  		return db.Domain(ip)
    80  	})
    81  
    82  	registerMaxmindMethodSpec("geoip_isp", "ISP", func(db *geoip2.Reader, ip net.IP) (interface{}, error) {
    83  		return db.ISP(ip)
    84  	})
    85  }