add function to format DNS TXT records

Author: marceljk

internal/cmd/dns/record-set/create/create.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-
 	"github.com/goccy/go-yaml"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/args"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/errors"
@@ -16,6 +15,7 @@ import (
 	dnsUtils "github.com/stackitcloud/stackit-cli/internal/pkg/services/dns/utils"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/spinner"
 	"github.com/stackitcloud/stackit-cli/internal/pkg/utils"
+	"math"
 
 	"github.com/spf13/cobra"
 	"github.com/stackitcloud/stackit-sdk-go/services/dns"
@@ -31,6 +31,7 @@ const (
 	typeFlag    = "type"
 
 	defaultType = "A"
+	txtType     = "TXT"
 )
 
 type inputModel struct {
@@ -152,7 +153,23 @@ func parseInput(p *print.Printer, cmd *cobra.Command) (*inputModel, error) {
 func buildRequest(ctx context.Context, model *inputModel, apiClient *dns.APIClient) dns.ApiCreateRecordSetRequest {
 	records := make([]dns.RecordPayload, 0)
 	for _, r := range model.Records {
-		records = append(records, dns.RecordPayload{Content: utils.Ptr(r)})
+		result := r
+		if len(r) > 255 && model.Type == txtType {
+			result = ""
+			length := float64(len(r))
+			chunks := int(math.Ceil(length / 255))
+			for i := range chunks {
+				skip := 255 * i
+				if i == chunks-1 {
+					// Append the left record content
+					result += fmt.Sprintf("%q", r[0+skip:])
+				} else {
+					// Add 255 characters of the record data quoted to the result
+					result += fmt.Sprintf("%q ", r[0+skip:255+skip])
+				}
+			}
+		}
+		records = append(records, dns.RecordPayload{Content: utils.Ptr(result)})
 	}
 
 	req := apiClient.CreateRecordSet(ctx, model.ProjectId, model.ZoneId)

internal/cmd/dns/record-set/create/create_test.go

@@ -2,6 +2,8 @@ package create
 
 import (
 	"context"
+	"fmt"
+	"strings"
 	"testing"
 
 	"github.com/stackitcloud/stackit-cli/internal/pkg/globalflags"
@@ -23,6 +25,12 @@ var testClient = &dns.APIClient{}
 var testProjectId = uuid.NewString()
 var testZoneId = uuid.NewString()
 
+var recordTxtOver255Char = []string{
+	"foobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoo",
+	"foobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoo",
+	"foobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobar",
+}
+
 func fixtureFlagValues(mods ...func(flagValues map[string]string)) map[string]string {
 	flagValues := map[string]string{
 		projectIdFlag: testProjectId,
@@ -326,6 +334,27 @@ func TestBuildRequest(t *testing.T) {
 					Type: utils.Ptr(defaultType),
 				}),
 		},
+		{
+			description: "add TXT record with > 255 characters",
+			model: fixtureInputModel(func(model *inputModel) {
+				model.Type = txtType
+				model.Records = []string{strings.Join(recordTxtOver255Char, "")}
+			}),
+			expectedRequest: testClient.CreateRecordSet(testCtx, testProjectId, testZoneId).
+				CreateRecordSetPayload(dns.CreateRecordSetPayload{
+					Name: utils.Ptr("example.com"),
+					Records: &[]dns.RecordPayload{
+						{
+							Content: utils.Ptr(
+								fmt.Sprintf("\"%s\"", strings.Join(recordTxtOver255Char, "\" \"")),
+							),
+						},
+					},
+					Type:    utils.Ptr(txtType),
+					Comment: utils.Ptr("comment"),
+					Ttl:     utils.Ptr(int64(3600)),
+				}),
+		},
 	}
 
 	for _, tt := range tests {