inspect: Dump metadatas.

Signed-off-by: Matthieu Nottale <[email protected]>

Author: Matthieu Nottale

cmd/inspect.go

@@ -2,29 +2,26 @@ package cmd
 
 import (
 	"fmt"
+	"os"
 
+	"github.com/docker/lunchbox/packager"
 	"github.com/spf13/cobra"
 )
 
 // inspectCmd represents the inspect command
 var inspectCmd = &cobra.Command{
 	Use:   "inspect <app-name>",
 	Short: "Retrieve metadata for a given app package",
+	Args:  cobra.ExactArgs(1),
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("inspect called")
+		err := packager.Inspect(args[0])
+		if err != nil {
+			fmt.Printf("%v\n", err)
+			os.Exit(1)
+		}
 	},
 }
 
 func init() {
 	rootCmd.AddCommand(inspectCmd)
-
-	// Here you will define your flags and configuration settings.
-
-	// Cobra supports Persistent Flags which will work for this command
-	// and all subcommands, e.g.:
-	// inspectCmd.PersistentFlags().String("foo", "", "A help for foo")
-
-	// Cobra supports local flags which will only run when this command
-	// is called directly, e.g.:
-	// inspectCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
 }

packager/inspect.go

@@ -0,0 +1,35 @@
+package packager
+
+import (
+	"fmt"
+	"io/ioutil"
+	"path"
+
+	"github.com/docker/lunchbox/types"
+	yaml "gopkg.in/yaml.v2"
+)
+
+// Inspect dumps the metadata of an app
+func Inspect(appname string) error {
+	appname, cleanup, err := Extract(appname)
+	if err != nil {
+		return err
+	}
+	defer cleanup()
+	metaFile := path.Join(appname, "metadata.yml")
+	metaContent, err := ioutil.ReadFile(metaFile)
+	if err != nil {
+		return err
+	}
+	var meta types.AppMetadata
+	err = yaml.Unmarshal(metaContent, &meta)
+	if err != nil {
+		return err
+	}
+	smeta, err := yaml.Marshal(meta)
+	if err != nil {
+		return err
+	}
+	fmt.Println(string(smeta))
+	return nil
+}