pdns: improve error messages (go-acme#2526)

Author: ldez

providers/dns/pdns/pdns.go

@@ -121,18 +121,18 @@ func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
 
 // Present creates a TXT record to fulfill the dns-01 challenge.
 func (d *DNSProvider) Present(domain, token, keyAuth string) error {
+	ctx := context.Background()
+
 	info := dns01.GetChallengeInfo(domain, keyAuth)
 
 	authZone, err := dns01.FindZoneByFqdn(info.EffectiveFQDN)
 	if err != nil {
 		return fmt.Errorf("pdns: could not find zone for domain %q: %w", domain, err)
 	}
 
-	ctx := context.Background()
-
 	zone, err := d.client.GetHostedZone(ctx, authZone)
 	if err != nil {
-		return fmt.Errorf("pdns: %w", err)
+		return fmt.Errorf("pdns: get hosted zone for %s: %w", authZone, err)
 	}
 
 	name := info.EffectiveFQDN
@@ -144,61 +144,63 @@ func (d *DNSProvider) Present(domain, token, keyAuth string) error {
 	// Look for existing records.
 	existingRRSet := findTxtRecord(zone, info.EffectiveFQDN)
 
-	// merge the existing and new records
 	var records []internal.Record
 	if existingRRSet != nil {
 		records = existingRRSet.Records
 	}
 
-	rec := internal.Record{
+	records = append(records, internal.Record{
 		Content:  strconv.Quote(info.Value),
 		Disabled: false,
 
 		// pre-v1 API
 		Type: "TXT",
 		Name: name,
 		TTL:  d.config.TTL,
-	}
+	})
 
 	rrSets := internal.RRSets{
-		RRSets: []internal.RRSet{
-			{
-				Name:       name,
-				ChangeType: "REPLACE",
-				Type:       "TXT",
-				Kind:       "Master",
-				TTL:        d.config.TTL,
-				Records:    append(records, rec),
-			},
-		},
+		RRSets: []internal.RRSet{{
+			Name:       name,
+			ChangeType: "REPLACE",
+			Type:       "TXT",
+			Kind:       "Master",
+			TTL:        d.config.TTL,
+			Records:    records,
+		}},
 	}
 
 	err = d.client.UpdateRecords(ctx, zone, rrSets)
 	if err != nil {
-		return fmt.Errorf("pdns: %w", err)
+		return fmt.Errorf("pdns: update records: %w", err)
 	}
 
-	return d.client.Notify(ctx, zone)
+	err = d.client.Notify(ctx, zone)
+	if err != nil {
+		return fmt.Errorf("pdns: notify: %w", err)
+	}
+
+	return nil
 }
 
 // CleanUp removes the TXT record matching the specified parameters.
 func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
+	ctx := context.Background()
+
 	info := dns01.GetChallengeInfo(domain, keyAuth)
 
 	authZone, err := dns01.FindZoneByFqdn(info.EffectiveFQDN)
 	if err != nil {
 		return fmt.Errorf("pdns: could not find zone for domain %q: %w", domain, err)
 	}
 
-	ctx := context.Background()
-
 	zone, err := d.client.GetHostedZone(ctx, authZone)
 	if err != nil {
-		return fmt.Errorf("pdns: %w", err)
+		return fmt.Errorf("pdns: get hosted zone for %s: %w", authZone, err)
 	}
 
+	// Look for existing records.
 	set := findTxtRecord(zone, info.EffectiveFQDN)
-
 	if set == nil {
 		return fmt.Errorf("pdns: no existing record found for %s", info.EffectiveFQDN)
 	}
@@ -225,10 +227,15 @@ func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
 
 	err = d.client.UpdateRecords(ctx, zone, internal.RRSets{RRSets: []internal.RRSet{rrSet}})
 	if err != nil {
-		return fmt.Errorf("pdns: %w", err)
+		return fmt.Errorf("pdns: update records: %w", err)
 	}
 
-	return d.client.Notify(ctx, zone)
+	err = d.client.Notify(ctx, zone)
+	if err != nil {
+		return fmt.Errorf("pdns: notify: %w", err)
+	}
+
+	return nil
 }
 
 func findTxtRecord(zone *internal.HostedZone, fqdn string) *internal.RRSet {