mirror of
https://github.com/linka-cloud/d2vm.git
synced 2024-11-25 17:16:25 +00:00
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
|
// Copyright 2022 Linka Cloud 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
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package d2vm
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
|
||
|
|
"github.com/google/uuid"
|
||
|
|
"github.com/sirupsen/logrus"
|
||
|
|
|
||
|
|
"go.linka.cloud/d2vm/pkg/docker"
|
||
|
|
"go.linka.cloud/d2vm/pkg/qemu_img"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
// https://kubevirt.io/user-guide/virtual_machines/disks_and_volumes/#containerdisk-workflow-example
|
||
|
|
uid = 107
|
||
|
|
containerDiskDockerfile = `FROM scratch
|
||
|
|
|
||
|
|
ADD --chown=%[1]d:%[1]d %[2]s /disk/
|
||
|
|
`
|
||
|
|
)
|
||
|
|
|
||
|
|
func MakeContainerDisk(ctx context.Context, path string, tag string) error {
|
||
|
|
tmpPath := filepath.Join(os.TempDir(), "d2vm", uuid.New().String())
|
||
|
|
if err := os.MkdirAll(tmpPath, os.ModePerm); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
defer func() {
|
||
|
|
if err := os.RemoveAll(tmpPath); err != nil {
|
||
|
|
logrus.Errorf("failed to remove tmp dir %s: %v", tmpPath, err)
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
if _, err := os.Stat(path); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
// convert may not be needed, but this will also copy the file in the tmp dir
|
||
|
|
qcow2 := filepath.Join(tmpPath, "disk.qcow2")
|
||
|
|
if err := qemu_img.Convert(ctx, "qcow2", path, qcow2); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
disk := filepath.Base(qcow2)
|
||
|
|
dockerfileContent := fmt.Sprintf(containerDiskDockerfile, uid, disk)
|
||
|
|
dockerfile := filepath.Join(tmpPath, "Dockerfile")
|
||
|
|
if err := os.WriteFile(dockerfile, []byte(dockerfileContent), os.ModePerm); err != nil {
|
||
|
|
return fmt.Errorf("failed to write dockerfile: %w", err)
|
||
|
|
}
|
||
|
|
if err := docker.Build(ctx, tag, dockerfile, tmpPath); err != nil {
|
||
|
|
return fmt.Errorf("failed to build container disk: %w", err)
|
||
|
|
}
|
||
|
|
return nil
|
||
|
|
}
|