introduce show-usage for image ls (#124)

cmd/image.go

@@ -28,6 +28,7 @@ func newImageCmd(c *config) *cobra.Command {
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return c.imageList()
 		},
+		PreRun: bindPFlags,
 	}
 	imageDescribeCmd := &cobra.Command{
 		Use:   "describe <imageID>",
@@ -109,6 +110,8 @@ Example:
 # metalctl image apply -f ubuntu.yaml`)
 	must(imageApplyCmd.MarkFlagRequired("file"))
 
+	imageListCmd.Flags().Bool("show-usage", false, "show from how many allocated machines every image is used")
+
 	imageCmd.AddCommand(imageListCmd)
 	imageCmd.AddCommand(imageDescribeCmd)
 	imageCmd.AddCommand(imageCreateCmd)
@@ -121,7 +124,15 @@ Example:
 }
 
 func (c *config) imageList() error {
-	resp, err := c.driver.ImageList()
+	var (
+		resp *metalgo.ImageListResponse
+		err  error
+	)
+	if viper.GetBool("show-usage") {
+		resp, err = c.driver.ImageListWithUsage()
+	} else {
+		resp, err = c.driver.ImageList()
+	}
 	if err != nil {
 		return err
 	}

go.mod

@@ -4,17 +4,17 @@ go 1.16
 
 require (
 	github.com/dustin/go-humanize v1.0.0
-	github.com/fatih/color v1.12.0
+	github.com/fatih/color v1.13.0
 	github.com/metal-stack/masterdata-api v0.8.8
-	github.com/metal-stack/metal-go v0.15.6
-	github.com/metal-stack/metal-lib v0.8.0
+	github.com/metal-stack/metal-go v0.16.1
+	github.com/metal-stack/metal-lib v0.8.1
 	github.com/metal-stack/updater v1.1.3
 	github.com/metal-stack/v v1.0.3
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/spf13/cobra v1.2.1
-	github.com/spf13/viper v1.8.1
+	github.com/spf13/viper v1.9.0
 	github.com/stretchr/testify v1.7.0
-	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5
-	golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b
+	golang.org/x/crypto v0.0.0-20211202192323-5770296d904e
+	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )