Working through node and group configuration via CLI

internal/app/wwctl/group/list/main.go

@@ -1,8 +1,44 @@
 package list
 
-import "github.com/spf13/cobra"
+import (
+	"fmt"
+	"github.com/hpcng/warewulf/internal/pkg/node"
+	"github.com/hpcng/warewulf/internal/pkg/wwlog"
+	"github.com/spf13/cobra"
+	"os"
+	"reflect"
+)
 
 func CobraRunE(cmd *cobra.Command, args []string) error {
+	nodeDB, err := node.New()
+	if err != nil {
+		wwlog.Printf(wwlog.ERROR, "Could not open node configuration: %s\n", err)
+		os.Exit(1)
+	}
+
+	groups, err := nodeDB.FindAllGroups()
+	if err != nil {
+		wwlog.Printf(wwlog.ERROR, "Could not find all nodes: %s\n", err)
+		os.Exit(1)
+	}
+
+
+	if ShowAll == true {
+		for _, group := range groups {
+			v := reflect.ValueOf(group)
+			typeOfS := v.Type()
+			fmt.Printf("################################################################################\n")
+			for i := 0; i< v.NumField(); i++ {
+				fmt.Printf("%-25s %s = %v\n", group.Id, typeOfS.Field(i).Name, v.Field(i).Interface())
+			}
+		}
+	} else {
+		fmt.Printf("%-22s %-20s %-30s %-30s %-16s\n", "GROUP NAME", "DOMAINNAME", "KERNEL VERSION", "VNFS IMAGE", "RUNTIME OVERLAY")
+		for _, g := range groups {
+			fmt.Printf("%-22s %-20s %-30s %-30s %-16s\n", g.GroupName, g.DomainName, g.KernelVersion, g.Vnfs, g.RuntimeOverlay)
+		}
+	}
+
 
 	return nil
 }

internal/app/wwctl/group/list/root.go

@@ -9,9 +9,12 @@ var (
 		Long:               "List group configurations ",
 		RunE:				CobraRunE,
 	}
+	ShowAll bool
 )
 
 func init() {
+	baseCmd.PersistentFlags().BoolVarP(&ShowAll, "all", "a", false, "Show all node configurations")
+
 }
 
 // GetRootCommand returns the root cobra.Command for the application.