Refactor: Prelink providers to domains (#305)

pkg/nameservers/nameservers.go

@@ -8,26 +8,22 @@ import (
 	"strconv"
 
 	"github.com/StackExchange/dnscontrol/models"
-	"github.com/StackExchange/dnscontrol/providers"
 	"github.com/miekg/dns/dnsutil"
 )
 
 // DetermineNameservers will find all nameservers we should use for a domain. It follows the following rules:
 // 1. All explicitly defined NAMESERVER records will be used.
 // 2. Each DSP declares how many nameservers to use. Default is all. 0 indicates to use none.
-func DetermineNameservers(dc *models.DomainConfig, maxNS int, dsps map[string]providers.DNSServiceProvider) ([]*models.Nameserver, error) {
+func DetermineNameservers(dc *models.DomainConfig) ([]*models.Nameserver, error) {
 	// always take explicit
 	ns := dc.Nameservers
-	for dsp, n := range dc.DNSProviders {
+	for _, dnsProvider := range dc.DNSProviderInstances {
+		n := dnsProvider.NumberOfNameservers
 		if n == 0 {
 			continue
 		}
-		fmt.Printf("----- Getting nameservers from: %s\n", dsp)
-		p, ok := dsps[dsp]
-		if !ok {
-			return nil, fmt.Errorf("DNS provider %s not declared", dsp)
-		}
-		nss, err := p.GetNameservers(dc.Name)
+		fmt.Printf("----- Getting nameservers from: %s\n", dnsProvider.Name)
+		nss, err := dnsProvider.Driver.GetNameservers(dc.Name)
 		if err != nil {
 			return nil, err
 		}