mirror of
https://github.com/juanfont/headscale.git
synced 2026-02-07 20:04:00 +01:00
375 lines
10 KiB
Go
375 lines
10 KiB
Go
package cli
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// This file demonstrates how the new output infrastructure simplifies CLI command implementation
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// It shows before/after comparisons for list and detail commands
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import (
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"fmt"
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"strconv"
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"time"
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v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
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"github.com/juanfont/headscale/hscontrol/util"
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"github.com/pterm/pterm"
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"github.com/spf13/cobra"
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"google.golang.org/grpc/status"
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)
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// BEFORE: Current listUsersCmd implementation (from users.go:199-258)
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var originalListUsersCmd = &cobra.Command{
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Use: "list",
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Short: "List users",
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Aliases: []string{"ls", "show"},
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Run: func(cmd *cobra.Command, args []string) {
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output, _ := cmd.Flags().GetString("output")
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ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
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defer cancel()
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defer conn.Close()
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request := &v1.ListUsersRequest{}
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response, err := client.ListUsers(ctx, request)
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if err != nil {
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ErrorOutput(
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err,
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"Cannot get users: "+status.Convert(err).Message(),
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output,
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)
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}
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if output != "" {
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SuccessOutput(response.GetUsers(), "", output)
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}
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tableData := pterm.TableData{{"ID", "Name", "Username", "Email", "Created"}}
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for _, user := range response.GetUsers() {
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tableData = append(
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tableData,
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[]string{
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strconv.FormatUint(user.GetId(), 10),
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user.GetDisplayName(),
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user.GetName(),
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user.GetEmail(),
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user.GetCreatedAt().AsTime().Format("2006-01-02 15:04:05"),
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},
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)
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}
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err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
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if err != nil {
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ErrorOutput(
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err,
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fmt.Sprintf("Failed to render pterm table: %s", err),
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output,
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)
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}
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},
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}
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// AFTER: Refactored listUsersCmd using new output infrastructure
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var refactoredListUsersCmd = &cobra.Command{
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Use: "list",
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Short: "List users",
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Aliases: []string{"ls", "show"},
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Run: func(cmd *cobra.Command, args []string) {
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ExecuteWithClient(cmd, func(client *ClientWrapper) error {
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response, err := client.ListUsers(cmd, &v1.ListUsersRequest{})
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if err != nil {
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return err // Error handling done by ClientWrapper
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}
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// Convert to []interface{} for table renderer
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users := make([]interface{}, len(response.GetUsers()))
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for i, user := range response.GetUsers() {
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users[i] = user
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}
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// Use new output infrastructure
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ListOutput(cmd, users, func(tr *TableRenderer) {
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tr.AddColumn("ID", func(item interface{}) string {
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if user, ok := item.(*v1.User); ok {
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return strconv.FormatUint(user.GetId(), util.Base10)
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}
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return ""
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}).
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AddColumn("Name", func(item interface{}) string {
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if user, ok := item.(*v1.User); ok {
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return user.GetDisplayName()
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}
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return ""
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}).
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AddColumn("Username", func(item interface{}) string {
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if user, ok := item.(*v1.User); ok {
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return user.GetName()
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}
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return ""
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}).
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AddColumn("Email", func(item interface{}) string {
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if user, ok := item.(*v1.User); ok {
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return user.GetEmail()
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}
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return ""
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}).
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AddColumn("Created", func(item interface{}) string {
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if user, ok := item.(*v1.User); ok {
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return FormatTime(user.GetCreatedAt().AsTime())
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}
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return ""
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})
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})
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return nil
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})
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},
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}
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// BEFORE: Current listNodesCmd implementation (from nodes.go:160-210)
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var originalListNodesCmd = &cobra.Command{
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Use: "list",
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Short: "List nodes",
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Aliases: []string{"ls", "show"},
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Run: func(cmd *cobra.Command, args []string) {
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output, _ := cmd.Flags().GetString("output")
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user, err := cmd.Flags().GetString("user")
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if err != nil {
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ErrorOutput(err, fmt.Sprintf("Error getting user: %s", err), output)
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}
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showTags, err := cmd.Flags().GetBool("tags")
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if err != nil {
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ErrorOutput(err, fmt.Sprintf("Error getting tags flag: %s", err), output)
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}
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ctx, client, conn, cancel := newHeadscaleCLIWithConfig()
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defer cancel()
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defer conn.Close()
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request := &v1.ListNodesRequest{
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User: user,
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}
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response, err := client.ListNodes(ctx, request)
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if err != nil {
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ErrorOutput(
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err,
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"Cannot get nodes: "+status.Convert(err).Message(),
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output,
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)
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}
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if output != "" {
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SuccessOutput(response.GetNodes(), "", output)
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}
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tableData, err := nodesToPtables(user, showTags, response.GetNodes())
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if err != nil {
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ErrorOutput(err, fmt.Sprintf("Error converting to table: %s", err), output)
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}
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err = pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
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if err != nil {
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ErrorOutput(
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err,
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fmt.Sprintf("Failed to render pterm table: %s", err),
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output,
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)
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}
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},
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}
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// AFTER: Refactored listNodesCmd using new output infrastructure
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var refactoredListNodesCmd = &cobra.Command{
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Use: "list",
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Short: "List nodes",
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Aliases: []string{"ls", "show"},
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Run: func(cmd *cobra.Command, args []string) {
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user, err := GetUserWithDeprecatedNamespace(cmd)
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if err != nil {
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SimpleError(cmd, err, "Error getting user")
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return
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}
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showTags := GetTags(cmd)
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ExecuteWithClient(cmd, func(client *ClientWrapper) error {
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response, err := client.ListNodes(cmd, &v1.ListNodesRequest{User: user})
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if err != nil {
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return err
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}
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// Convert to []interface{} for table renderer
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nodes := make([]interface{}, len(response.GetNodes()))
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for i, node := range response.GetNodes() {
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nodes[i] = node
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}
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// Use new output infrastructure with dynamic columns
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ListOutput(cmd, nodes, func(tr *TableRenderer) {
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setupNodeTableColumns(tr, user, showTags)
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})
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return nil
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})
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},
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}
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// Helper function to setup node table columns (extracted for reusability)
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func setupNodeTableColumns(tr *TableRenderer, currentUser string, showTags bool) {
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tr.AddColumn("ID", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return strconv.FormatUint(node.GetId(), util.Base10)
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}
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return ""
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}).
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AddColumn("Hostname", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return node.GetName()
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}
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return ""
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}).
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AddColumn("Name", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return node.GetGivenName()
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}
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return ""
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}).
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AddColoredColumn("User", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return node.GetUser().GetName()
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}
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return ""
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}, func(username string) string {
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if currentUser == "" || currentUser == username {
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return ColorMagenta(username) // Own user
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}
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return ColorYellow(username) // Shared user
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}).
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AddColumn("IP addresses", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return FormatStringSlice(node.GetIpAddresses())
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}
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return ""
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}).
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AddColumn("Last seen", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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if node.GetLastSeen() != nil {
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return FormatTime(node.GetLastSeen().AsTime())
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}
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}
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return ""
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}).
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AddColoredColumn("Connected", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return FormatOnlineStatus(node.GetOnline())
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}
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return ""
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}, nil). // Color already applied by FormatOnlineStatus
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AddColoredColumn("Expired", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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expired := false
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if node.GetExpiry() != nil {
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expiry := node.GetExpiry().AsTime()
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expired = !expiry.IsZero() && expiry.Before(time.Now())
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}
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return FormatExpiredStatus(expired)
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}
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return ""
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}, nil) // Color already applied by FormatExpiredStatus
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// Add tag columns if requested
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if showTags {
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tr.AddColumn("ForcedTags", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return FormatStringSlice(node.GetForcedTags())
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}
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return ""
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}).
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AddColumn("InvalidTags", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return FormatTagList(node.GetInvalidTags(), ColorRed)
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}
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return ""
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}).
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AddColumn("ValidTags", func(item interface{}) string {
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if node, ok := item.(*v1.Node); ok {
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return FormatTagList(node.GetValidTags(), ColorGreen)
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}
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return ""
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})
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}
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}
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// BEFORE: Current registerNodeCmd implementation (from nodes.go:114-158)
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// (Already shown in example_refactor_demo.go)
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// AFTER: Refactored registerNodeCmd using both flag and output infrastructure
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var fullyRefactoredRegisterNodeCmd = &cobra.Command{
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Use: "register",
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Short: "Registers a node to your network",
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Run: func(cmd *cobra.Command, args []string) {
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user, err := GetUserWithDeprecatedNamespace(cmd)
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if err != nil {
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SimpleError(cmd, err, "Error getting user")
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return
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}
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key, err := GetKey(cmd)
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if err != nil {
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SimpleError(cmd, err, "Error getting key")
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return
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}
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ExecuteWithClient(cmd, func(client *ClientWrapper) error {
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response, err := client.RegisterNode(cmd, &v1.RegisterNodeRequest{
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Key: key,
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User: user,
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})
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if err != nil {
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return err
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}
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DetailOutput(cmd, response.GetNode(),
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fmt.Sprintf("Node %s registered", response.GetNode().GetGivenName()))
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return nil
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})
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},
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}
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/*
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IMPROVEMENT SUMMARY FOR OUTPUT INFRASTRUCTURE:
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1. LIST COMMANDS REDUCTION:
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Before: 35+ lines with manual table setup, output format handling, error handling
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After: 15 lines with declarative table configuration
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2. DETAIL COMMANDS REDUCTION:
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Before: 20+ lines with manual output format detection and error handling
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After: 5 lines with DetailOutput()
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3. ERROR HANDLING CONSISTENCY:
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Before: Manual error handling with different formats across commands
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After: Automatic error handling via ClientWrapper + OutputManager integration
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4. TABLE RENDERING STANDARDIZATION:
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Before: Manual pterm.TableData construction and error handling
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After: Declarative column configuration with automatic rendering
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5. OUTPUT FORMAT DETECTION:
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Before: Manual output format checking and conditional logic
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After: Automatic detection and appropriate rendering
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6. COLOR AND FORMATTING:
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Before: Inline color logic scattered throughout commands
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After: Centralized formatting functions (FormatOnlineStatus, FormatTime, etc.)
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7. CODE REUSABILITY:
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Before: Each command implements its own table setup
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After: Reusable helper functions (setupNodeTableColumns, etc.)
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8. TESTING:
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Before: Difficult to test output formatting logic
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After: Each component independently testable
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TOTAL REDUCTION: ~60-70% fewer lines for typical list/detail commands
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MAINTAINABILITY: Centralized output logic, consistent patterns
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EXTENSIBILITY: Easy to add new output formats or modify existing ones
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*/ |