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https://github.com/linka-cloud/d2vm.git
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Adphi
5b8cad6176
docs: add README.md and examples centos/rhel: fix dracut initramfs Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>
102 lines
3.0 KiB
Go
102 lines
3.0 KiB
Go
// Copyright 2022 Linka Cloud All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"fmt"
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"os"
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"strings"
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"github.com/c2h5oh/datasize"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"go.linka.cloud/d2vm"
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"go.linka.cloud/d2vm/pkg/docker"
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"go.linka.cloud/d2vm/pkg/exec"
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)
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var (
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pull = false
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convertCmd = &cobra.Command{
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Use: "convert [docker image]",
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Short: "Convert Docker image to vm image",
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Args: cobra.ExactArgs(1),
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SilenceUsage: true,
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RunE: func(cmd *cobra.Command, args []string) error {
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img := args[0]
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tag := "latest"
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if parts := strings.Split(img, ":"); len(parts) > 1 {
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img, tag = parts[0], parts[1]
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}
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size, err := parseSize(size)
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if err != nil {
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return err
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}
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if _, err := os.Stat(output); err == nil || !os.IsNotExist(err) {
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if !force {
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return fmt.Errorf("%s already exists", output)
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}
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}
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if debug {
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exec.Run = exec.RunStdout
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}
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if _, err := os.Stat(output); err == nil || !os.IsNotExist(err) {
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if !force {
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return fmt.Errorf("%s already exists", output)
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}
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}
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found := false
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if !pull {
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o, _, err := docker.CmdOut(cmd.Context(), "image", "ls", "--format={{ .Repository }}:{{ .Tag }}", img)
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if err != nil {
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return err
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}
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found = strings.TrimSuffix(o, "\n") == fmt.Sprintf("%s:%s", img, tag)
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if found {
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logrus.Infof("using local image %s:%s", img, tag)
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}
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}
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if pull || !found {
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logrus.Infof("pulling image %s", img)
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if err := docker.Cmd(cmd.Context(), "image", "pull", img); err != nil {
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return err
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}
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}
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return d2vm.Convert(cmd.Context(), img, size, password, output, format)
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},
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}
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)
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func parseSize(s string) (int64, error) {
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var v datasize.ByteSize
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if err := v.UnmarshalText([]byte(s)); err != nil {
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return 0, err
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}
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return int64(v), nil
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}
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func init() {
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convertCmd.Flags().BoolVar(&pull, "pull", false, "Always pull docker image")
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convertCmd.Flags().StringVarP(&format, "output-format", "O", format, "The output image format, supported formats: "+strings.Join(d2vm.OutputFormats(), " "))
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convertCmd.Flags().StringVarP(&output, "output", "o", output, "The output image")
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convertCmd.Flags().StringVarP(&password, "password", "p", "root", "The Root user password")
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convertCmd.Flags().StringVarP(&size, "size", "s", "10G", "The output image size")
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convertCmd.Flags().BoolVarP(&debug, "debug", "d", false, "Enable Debug output")
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convertCmd.Flags().BoolVarP(&force, "force", "f", false, "Override output qcow2 image")
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rootCmd.AddCommand(convertCmd)
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}
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