feat(alb): list command

Author: bahkauv70

go.mod

@@ -52,6 +52,7 @@ require (
 	github.com/go-viper/mapstructure/v2 v2.2.1 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/stackitcloud/stackit-sdk-go/services/alb v0.2.1 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 )
 

go.sum

@@ -113,6 +113,8 @@ github.com/spf13/viper v1.20.1 h1:ZMi+z/lvLyPSCoNtFCpqjy0S4kPbirhpTMwl8BkW9X4=
 github.com/spf13/viper v1.20.1/go.mod h1:P9Mdzt1zoHIG8m2eZQinpiBjo6kCmZSKBClNNqjJvu4=
 github.com/stackitcloud/stackit-sdk-go/core v0.16.2 h1:F8A4P/LLlQSbz0S0+G3m8rb3BUOK6EcR/CKx5UQY5jQ=
 github.com/stackitcloud/stackit-sdk-go/core v0.16.2/go.mod h1:8KIw3czdNJ9sdil9QQimxjR6vHjeINFrRv0iZ67wfn0=
+github.com/stackitcloud/stackit-sdk-go/services/alb v0.2.1 h1:7VOUNsnNBL2iQsZ3lJogNzKx4lrYEawDYllcXV1gEik=
+github.com/stackitcloud/stackit-sdk-go/services/alb v0.2.1/go.mod h1:J2/Jk+leR6AjBotd7USJJzX+AEIHH11yxnmx+6ciJEk=
 github.com/stackitcloud/stackit-sdk-go/services/authorization v0.6.1 h1:2lq6SG8qOgPOx2OIA5Bca8mwRSlect3Yljk57bXqd5I=
 github.com/stackitcloud/stackit-sdk-go/services/authorization v0.6.1/go.mod h1:in9kC4GIBU5DpzXKFDL7RDl0fKyvN/RUIc7YbyWYEUA=
 github.com/stackitcloud/stackit-sdk-go/services/dns v0.13.1 h1:W5zQhg/nA2RVSkUtRjsGcJMdYlOicoE5gBGE9zMT9Eo=

internal/cmd/beta/alb/alb.go

@@ -0,0 +1,29 @@
+package alb
+
+import (
+	"github.com/stackitcloud/stackit-cli/internal/cmd/beta/alb/list"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/args"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/print"
+
+	"github.com/stackitcloud/stackit-cli/internal/pkg/utils"
+
+	"github.com/spf13/cobra"
+)
+
+func NewCmd(p *print.Printer) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "alb",
+		Short: "Manages application loadbalancers",
+		Long:  "Manage the lifecycle of application loadbalancers.",
+		Args:  args.NoArgs,
+		Run:   utils.CmdHelp,
+	}
+	addSubcommands(cmd, p)
+	return cmd
+}
+
+func addSubcommands(cmd *cobra.Command, p *print.Printer) {
+	cmd.AddCommand(
+		list.NewCmd(p),
+	)
+}

internal/cmd/beta/alb/list/list.go

@@ -0,0 +1,174 @@
+package list
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/goccy/go-yaml"
+	"github.com/spf13/cobra"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/args"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/errors"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/examples"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/flags"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/globalflags"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/print"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/projectname"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/services/alb/client"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/tables"
+	"github.com/stackitcloud/stackit-cli/internal/pkg/utils"
+	"github.com/stackitcloud/stackit-sdk-go/services/alb"
+)
+
+type inputModel struct {
+	*globalflags.GlobalFlagModel
+	Limit *int64
+}
+
+const (
+	labelSelectorFlag = "label-selector"
+	limitFlag         = "limit"
+)
+
+func NewCmd(p *print.Printer) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "list",
+		Short: "Lists albs",
+		Long:  "Lists application load balancers.",
+		Args:  args.NoArgs,
+		Example: examples.Build(
+			examples.NewExample(
+				`List all load balancers`,
+				`$ stackit beta alb list`,
+			),
+			examples.NewExample(
+				`List the first 10 application load balancers`,
+				`$ stackit beta alb list --limit=10`,
+			),
+		),
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			ctx := context.Background()
+			model, err := parseInput(p, cmd)
+			if err != nil {
+				return err
+			}
+
+			// Configure API client
+			apiClient, err := client.ConfigureClient(p)
+			if err != nil {
+				return err
+			}
+
+			projectLabel, err := projectname.GetProjectName(ctx, p, cmd)
+			if err != nil {
+				p.Debug(print.ErrorLevel, "get project name: %v", err)
+				projectLabel = model.ProjectId
+			} else if projectLabel == "" {
+				projectLabel = model.ProjectId
+			}
+
+			// Call API
+			request := buildRequest(ctx, model, apiClient)
+
+			response, err := request.Execute()
+			if err != nil {
+				return fmt.Errorf("list load balancerse: %w", err)
+			}
+
+			if items := response.LoadBalancers; items != nil && len(*items) == 0 {
+				p.Info("No load balancers found for project %q", projectLabel)
+			} else {
+				if model.Limit != nil && len(*items) > int(*model.Limit) {
+					*items = (*items)[:*model.Limit]
+				}
+				if err := outputResult(p, model.OutputFormat, *items); err != nil {
+					return fmt.Errorf("output loadbalancers: %w", err)
+				}
+			}
+
+			return nil
+		},
+	}
+
+	configureFlags(cmd)
+	return cmd
+}
+
+func configureFlags(cmd *cobra.Command) {
+	cmd.Flags().Int64(limitFlag, 0, "Limit the output to the first n elements")
+}
+
+func parseInput(p *print.Printer, cmd *cobra.Command) (*inputModel, error) {
+	globalFlags := globalflags.Parse(p, cmd)
+	if globalFlags.ProjectId == "" {
+		return nil, &errors.ProjectIdError{}
+	}
+
+	limit := flags.FlagToInt64Pointer(p, cmd, limitFlag)
+	if limit != nil && *limit < 1 {
+		return nil, &errors.FlagValidationError{
+			Flag:    limitFlag,
+			Details: "must be greater than 0",
+		}
+	}
+
+	model := inputModel{
+		GlobalFlagModel: globalFlags,
+		Limit:           limit,
+	}
+
+	if p.IsVerbosityDebug() {
+		modelStr, err := print.BuildDebugStrFromInputModel(model)
+		if err != nil {
+			p.Debug(print.ErrorLevel, "convert model to string for debugging: %v", err)
+		} else {
+			p.Debug(print.DebugLevel, "parsed input values: %s", modelStr)
+		}
+	}
+
+	return &model, nil
+}
+
+func buildRequest(ctx context.Context, model *inputModel, apiClient *alb.APIClient) alb.ApiListLoadBalancersRequest {
+	request := apiClient.ListLoadBalancers(ctx, model.ProjectId, model.Region)
+
+	return request
+}
+func outputResult(p *print.Printer, outputFormat string, items []alb.LoadBalancer) error {
+	switch outputFormat {
+	case print.JSONOutputFormat:
+		details, err := json.MarshalIndent(items, "", "  ")
+		if err != nil {
+			return fmt.Errorf("marshal loadbalancer list: %w", err)
+		}
+		p.Outputln(string(details))
+
+		return nil
+	case print.YAMLOutputFormat:
+		details, err := yaml.MarshalWithOptions(items, yaml.IndentSequence(true), yaml.UseJSONMarshaler())
+		if err != nil {
+			return fmt.Errorf("marshal loadbalancer list: %w", err)
+		}
+		p.Outputln(string(details))
+
+		return nil
+	default:
+		table := tables.NewTable()
+		table.SetHeader("NAME", "EXTERNAL ADDRESS", "REGION", "STATUS", "VERSION")
+		for _, item := range items {
+			table.AddRow(utils.PtrString(item.Name),
+				utils.PtrString(item.ExternalAddress),
+				utils.PtrString(item.Region),
+				utils.PtrString(item.Status),
+				utils.PtrString(item.Version),
+				utils.PtrString(item.ExternalAddress),
+			)
+		}
+		err := table.Display(p)
+		if err != nil {
+			return fmt.Errorf("render table: %w", err)
+		}
+
+		return nil
+	}
+}