Improve messages

cmd/apply.go

@@ -38,6 +38,7 @@ var applyCmd = &cobra.Command{
 			if ip.NetnsExists(netns) {
 				slog.Warn("netns is already exists", "name", netns)
 			} else {
+				slog.Info("create netns", "name", netns)
 				err := ip.AddNetns(netns)
 				if err != nil {
 					return err
@@ -69,24 +70,31 @@ var applyCmd = &cobra.Command{
 }
 
 func SetupDevice(name string, addresses []string) error {
+	err := SetLinkUp(name)
+	if err != nil {
+		return err
+	}
+
+	slog.Info("add addresses", "name", name, "addresses", addresses)
+
 	for _, address := range addresses {
 		err := ip.AddAddress(name, address)
 		if err != nil {
 			return err
 		}
 	}
+	return nil
+}
 
-	err := ip.SetLinkUp(name)
-	if err != nil {
-		return err
-	}
+func SetLinkUp(name string) error {
+	slog.Info("link up", "name", name, "netns", ip.Netns())
 
-	return nil
+	return ip.SetLinkUp(name)
 }
 
 func SetupLoopback(netns string) error {
 	return ip.IntoNetns(netns, func() error {
-		return ip.SetLinkUp("lo")
+		return SetLinkUp("lo")
 	})
 }
 
@@ -107,6 +115,7 @@ func SetupEthernets(netns string, ethernets map[string]config.EthernetConfig) er
 func SetupDummyDevices(netns string, devices map[string]config.EthernetConfig) error {
 	for name, values := range devices {
 		ip.IntoNetns(netns, func() error {
+			slog.Info("add dummy device", "name", name, "netns", netns)
 			err := ip.AddDummyDevice(name)
 			if err != nil {
 				return err
@@ -123,6 +132,7 @@ func SetupVethDevices(netns string, devices map[string]config.VethDeviceConfig)
 		peerName := values.Peer.Name
 		peerNetns := values.Peer.Netns
 
+		slog.Info("add veth device", "name", name, "netns", netns, "peer name", peerName, "peer netns", peerNetns)
 		err := ip.AddVethDevice(name, peerName)
 		if err != nil {
 			return err
@@ -142,11 +152,7 @@ func SetupVethDevices(netns string, devices map[string]config.VethDeviceConfig)
 				return err
 			}
 			ip.IntoNetns(netns, func() error {
-				err = SetupDevice(peerName, values.Peer.Addresses)
-				if err != nil {
-					return err
-				}
-				return nil
+				return SetupDevice(peerName, values.Peer.Addresses)
 			})
 		} else {
 			SetupDevice(peerName, values.Peer.Addresses)

cmd/destroy.go

@@ -29,9 +29,9 @@ import (
 
 // destroyCmd represents the destroy command
 var destroyCmd = &cobra.Command{
-	Use:   "destroy",
-	Short: "Destroy netns networks configuration from running system",
-	Long:  "Destroy netns networks configuration from running system",
+	Use:     "destroy",
+	Short:   "Destroy netns networks configuration from running system",
+	Long:    "Destroy netns networks configuration from running system",
 	RunE: func(cmd *cobra.Command, args []string) error {
 		for n := range cfg.Netns {
 			if ip.NetnsExists(n) {

cmd/root.go

@@ -34,9 +34,13 @@ import (
 	"gitlab.com/greyxor/slogor"
 )
 
-var cfgFilePath string
-var ipCmdPath string
-var debug bool
+type Flags struct {
+	ConfigPath   string
+	IpCmdPath    string
+	Debug, Quiet bool
+}
+
+var flags Flags
 
 var cfg *config.Config
 var ip *iproute2.Iproute2
@@ -47,23 +51,30 @@ var rootCmd = &cobra.Command{
 	Long:         "Easily automate Linux netns networks and configurations via YAML",
 	SilenceUsage: true,
 	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
-		logLevel := slog.LevelInfo
-		if debug {
+		err := cmd.ValidateFlagGroups()
+		if err != nil {
+			return err
+		}
+
+		var logLevel slog.Level
+		if flags.Debug {
 			logLevel = slog.LevelDebug
 		}
+		if flags.Quiet {
+			logLevel = slog.LevelError
+		}
 		slog.SetDefault(slog.New(slogor.NewHandler(os.Stdout, slogor.Options{
 			TimeFormat: "",
 			Level:      logLevel,
 			ShowSource: false,
 		})))
 
-		var err error
-		cfg, err = config.LoadConfig(cfgFilePath)
+		cfg, err = config.LoadConfig(flags.ConfigPath)
 		if err != nil {
 			return err
 		}
 
-		ip = iproute2.New(ipCmdPath)
+		ip = iproute2.New(flags.IpCmdPath)
 		return nil
 	},
 }
@@ -82,7 +93,10 @@ func Execute() {
 }
 
 func init() {
-	rootCmd.PersistentFlags().StringVar(&cfgFilePath, "config", "./netnsplan.yaml", "config file")
-	rootCmd.PersistentFlags().StringVar(&ipCmdPath, "cmd", "/bin/ip", "ip command path")
-	rootCmd.PersistentFlags().BoolVar(&debug, "debug", false, "debug mode")
+	rootCmd.PersistentFlags().StringVar(&flags.ConfigPath, "config", "./netnsplan.yaml", "config file")
+	rootCmd.PersistentFlags().StringVar(&flags.IpCmdPath, "cmd", "/bin/ip", "ip command path")
+
+	rootCmd.PersistentFlags().BoolVar(&flags.Debug, "debug", false, "debug mode")
+	rootCmd.PersistentFlags().BoolVarP(&flags.Quiet, "quiet", "q", false, "debug mode")
+	rootCmd.MarkFlagsMutuallyExclusive("debug", "quiet")
 }

iproute2/iproute2.go

@@ -123,6 +123,13 @@ func (i *Iproute2) IntoNetns(netns string, fn func() error) error {
 	return err
 }
 
+func (i *Iproute2) Netns() string {
+	if i.useNetns {
+		return i.netns
+	}
+	return ""
+}
+
 func (i *Iproute2) NetnsExists(name string) bool {
 	return slices.Contains(i.ListNetns(), name)
 }