add basic command framework and apiserver

cmd/cmd.go

@@ -0,0 +1,43 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gostor/gotgt/pkg/api/client"
+	"github.com/spf13/cobra"
+)
+
+func NewCommand(cli *client.Client) *cobra.Command {
+	var cmd = &cobra.Command{
+		Use:   "citadm",
+		Short: "Gotgt is a very fast and stable SCSI target framework",
+		Long:  ``,
+		Run: func(cmd *cobra.Command, args []string) {
+			// Do Stuff Here
+		},
+	}
+	cmd.AddCommand(
+		newCreateCommand(cli),
+		newRemoveCommand(cli),
+		newListCommand(cli),
+		newVersionCommand(cli),
+	)
+	return cmd
+}
+
+// NoArgs validate args and returns an error if there are any args
+func NoArgs(cmd *cobra.Command, args []string) error {
+	if len(args) == 0 {
+		return nil
+	}
+
+	if cmd.HasSubCommands() {
+		return fmt.Errorf("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
+	}
+
+	return fmt.Errorf(
+		"\"%s\" accepts no argument(s).\n",
+		cmd.CommandPath(),
+	)
+}