dns-updater/ip/resolver/service.go

package lookup

import (
	"context"
	"net"
	"time"

	"dnsupdater/ip"
)

type Service interface {
	Name() string

	Lookup(ctx context.Context) (net.IP, error)
}

const WAN_IFACE = "wan"

func LookupWrapper(service Service) ip.NetInterfaceIPResolver {
	return func(iface_name string) (net.IP, error) {
		if iface_name == WAN_IFACE {
			ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
			defer cancel()
			return service.Lookup(ctx)
		}
		return ip.GetInterfaceIP(iface_name)
	}
}