add limactl debug dns

Signed-off-by: Akihiro Suda <[email protected]>

Author: AkihiroSuda

cmd/limactl/debug.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"strconv"
+
+	"github.com/lima-vm/lima/pkg/hostagent/dns"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+func newDebugCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:    "debug",
+		Short:  "Debug utilities",
+		Long:   "DO NOT USE! THE COMMAND SYNTAX IS SUBJECT TO CHANGE!",
+		Hidden: true,
+	}
+	cmd.AddCommand(newDebugDNSCommand())
+	return cmd
+}
+
+func newDebugDNSCommand() *cobra.Command {
+	var cmd = &cobra.Command{
+		Use:   "dns UDPPORT [TCPPORT]",
+		Short: "Debug built-in DNS",
+		Long:  "DO NOT USE! THE COMMAND SYNTAX IS SUBJECT TO CHANGE!",
+		Args:  cobra.RangeArgs(1, 2),
+		RunE:  debugDNSAction,
+	}
+	return cmd
+}
+
+func debugDNSAction(cmd *cobra.Command, args []string) error {
+	udpLocalPort, err := strconv.Atoi(args[0])
+	if err != nil {
+		return err
+	}
+	tcpLocalPort := 0
+	if len(args) > 2 {
+		tcpLocalPort, err = strconv.Atoi(args[1])
+		if err != nil {
+			return err
+		}
+	}
+	srv, err := dns.Start(udpLocalPort, tcpLocalPort)
+	if err != nil {
+		return err
+	}
+	logrus.Infof("Started srv %+v (UDP %d, TCP %d)", srv, udpLocalPort, tcpLocalPort)
+	for {
+	}
+}

cmd/limactl/main.go

@@ -81,6 +81,7 @@ func newApp() *cobra.Command {
 		newHostagentCommand(),
 		newInfoCommand(),
 		newShowSSHCommand(),
+		newDebugCommand(),
 	)
 	return rootCmd
 }