feat: add network in use check to compose down

Signed-off-by: Retros <[email protected]>

pkg/cmd/compose/compose.go

@@ -58,6 +58,21 @@ func New(client *containerd.Client, globalOptions types.GlobalCommandOptions, op
 		return false, nil
 	}
 
+	options.NetworkInUse = func(ctx context.Context, netName string) (bool, error) {
+		usedMap, err := netutil.UsedNetworks(ctx, client)
+		if err != nil {
+			return false, err
+		}
+		for _, v := range usedMap {
+			for _, net := range v {
+				if net == netName {
+					return true, nil
+				}
+			}
+		}
+		return false, nil
+	}
+
 	volStore, err := volume.Store(globalOptions.Namespace, globalOptions.DataRoot, globalOptions.Address)
 	if err != nil {
 		return nil, err

pkg/composer/composer.go

@@ -40,6 +40,7 @@ type Options struct {
 	EnvFile          string
 	NerdctlCmd       string
 	NerdctlArgs      []string
+	NetworkInUse     func(ctx context.Context, netName string) (bool, error)
 	NetworkExists    func(string) (bool, error)
 	VolumeExists     func(string) (bool, error)
 	ImageExists      func(ctx context.Context, imageName string) (bool, error)

pkg/composer/down.go

@@ -96,6 +96,17 @@ func (c *Composer) downNetwork(ctx context.Context, shortName string) error {
 	netExists, err := c.NetworkExists(fullName)
 	if err != nil {
 		return err
+	}
+
+	if netExists {
+		netUsed, err := c.NetworkInUse(ctx, fullName)
+		if err != nil {
+			return err
+		}
+
+		if netUsed {
+			logrus.Errorf("network %s is in use", fullName)
+		}
 	} else if netExists {
 		logrus.Infof("Removing network %s", fullName)
 		if err := c.runNerdctlCmd(ctx, "network", "rm", fullName); err != nil {