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// Copyright 2021 Google Inc. All Rights Reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
type ToGCECmd struct {
InputURL string
ImageProject string
ImageName string
GcsBucket string
// Name returns the name of the command.
func (tgc *ToGCECmd) Name() string {
return "to-gce"
// Synopsis returns short description of the command.
func (tgc *ToGCECmd) Synopsis() string {
return "Converts the Input OVA image " +
"to raw format and uploads to GCE Project"
// Usage returns instructions on how to use the command.
func (tgc *ToGCECmd) Usage() string {
return "Converts the Input OVA image " +
"to raw format and uploads to GCE Project"
// SetFlags adds the flags to the specified set.
func (tgc *ToGCECmd) SetFlags(fs *flag.FlagSet) {
fs.StringVar(&tgc.GcsBucket, "gcs-bucket", "",
"GCS bucket for the working dir. It is mandatory. Example: sample-bucket")
fs.StringVar(&tgc.InputURL, "input-url", "",
"URL to the Input OVA Image. It is mandatory. Example: gs://sample-bucket/input.ova")
fs.StringVar(&tgc.ImageProject, "image-project", "",
"Project in which the image is to be created. It is mandatory. Example: test-project")
fs.StringVar(&tgc.ImageName, "image-name", "",
"Name of the Image to be create. It is mandatory. Example: input-gce")
// Execute executes the command (converts OVA to GCE) and returns the CommandStatus
func (otgc *ToGCECmd) Execute(ctx context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus {
if err := otgc.validateInput(); err != nil {
glog.Errorf("failed to parse flags: %v", err)
return subcommands.ExitFailure
exitStatus := subcommands.ExitSuccess
converter := ovaconverter.NewConverter(ctx)
if err := converter.ConvertOVAToGCE(ctx, otgc.InputURL, otgc.ImageName,
otgc.GcsBucket, otgc.ImageProject); err != nil {
glog.Errorf("failed to convert to the gce image: %v", err)
exitStatus = subcommands.ExitFailure
return exitStatus
// validateInput validates the input from flags parsed and returns error when the
// mandatory input values are not present
func (tgc *ToGCECmd) validateInput() error {
var errMsgs []string
if tgc.GcsBucket == "" {
errMsgs = append(errMsgs, "gcs-bucket is mandatory")
if tgc.InputURL == "" {
errMsgs = append(errMsgs, "input-url is mandatory")
if tgc.ImageName == "" {
errMsgs = append(errMsgs, "image-name is mandatory")
if tgc.ImageProject == "" {
errMsgs = append(errMsgs, "image-project is mandatory")
if len(errMsgs) > 0 {
return errors.New(strings.Join(errMsgs, ";"))
return nil