Add "debug" command

This commit adds a debug command tree, intended to host commands used
for debugging and testing.

It adds a create node/machine command which will be used later to create
machines that can be used to test the registration command.

cmd/headscale/cli/debug.go

@@ -0,0 +1,93 @@
+package cli
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	v1 "github.com/juanfont/headscale/gen/go/headscale/v1"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(debugCmd)
+
+	createNodeCmd.Flags().StringP("name", "", "", "Name")
+	err := createNodeCmd.MarkFlagRequired("name")
+	if err != nil {
+		log.Fatal().Err(err).Msg("")
+	}
+	createNodeCmd.Flags().StringP("namespace", "n", "", "Namespace")
+	err = createNodeCmd.MarkFlagRequired("namespace")
+	if err != nil {
+		log.Fatal().Err(err).Msg("")
+	}
+	createNodeCmd.Flags().StringP("key", "k", "", "Key")
+	err = createNodeCmd.MarkFlagRequired("key")
+	if err != nil {
+		log.Fatal().Err(err).Msg("")
+	}
+	createNodeCmd.Flags().StringSliceP("route", "r", []string{}, "List (or repeated flags) of routes to advertise")
+
+	debugCmd.AddCommand(createNodeCmd)
+}
+
+var debugCmd = &cobra.Command{
+	Use:   "debug",
+	Short: "debug and testing commands",
+	Long:  "debug contains extra commands used for debugging and testing headscale",
+}
+
+var createNodeCmd = &cobra.Command{
+	Use:   "create-node",
+	Short: "Create a node (machine) that can be registered with `nodes register <>` command",
+	Run: func(cmd *cobra.Command, args []string) {
+		output, _ := cmd.Flags().GetString("output")
+
+		namespace, err := cmd.Flags().GetString("namespace")
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Error getting namespace: %s", err), output)
+			return
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+
+		client, conn := getHeadscaleGRPCClient(ctx)
+		defer conn.Close()
+
+		name, err := cmd.Flags().GetString("name")
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Error getting node from flag: %s", err), output)
+			return
+		}
+
+		machineKey, err := cmd.Flags().GetString("key")
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Error getting key from flag: %s", err), output)
+			return
+		}
+
+		routes, err := cmd.Flags().GetStringSlice("route")
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Error getting routes from flag: %s", err), output)
+			return
+		}
+
+		request := &v1.DebugCreateMachineRequest{
+			Key:       machineKey,
+			Name:      name,
+			Namespace: namespace,
+			Routes:    routes,
+		}
+
+		response, err := client.DebugCreateMachine(ctx, request)
+		if err != nil {
+			ErrorOutput(err, fmt.Sprintf("Cannot create machine: %s", err), output)
+			return
+		}
+
+		SuccessOutput(response.Machine, "Machine created", output)
+	},
+}