mirror of
https://github.com/linka-cloud/d2vm.git
synced 2024-11-29 02:56:24 +00:00
120 lines
2.8 KiB
Go
120 lines
2.8 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"
|
|
"strings"
|
|
"text/template"
|
|
|
|
"github.com/joho/godotenv"
|
|
"github.com/sirupsen/logrus"
|
|
|
|
"go.linka.cloud/d2vm/pkg/docker"
|
|
)
|
|
|
|
const (
|
|
ReleaseUbuntu Release = "ubuntu"
|
|
ReleaseDebian Release = "debian"
|
|
ReleaseAlpine Release = "alpine"
|
|
ReleaseCentOS Release = "centos"
|
|
ReleaseRHEL Release = "rhel"
|
|
)
|
|
|
|
type Release string
|
|
|
|
func (r Release) Supported() bool {
|
|
switch r {
|
|
case ReleaseUbuntu:
|
|
return true
|
|
case ReleaseDebian:
|
|
return true
|
|
case ReleaseAlpine:
|
|
return true
|
|
case ReleaseCentOS:
|
|
return true
|
|
case ReleaseRHEL:
|
|
return false
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
type OSRelease struct {
|
|
ID Release
|
|
Name string
|
|
VersionID string
|
|
Version string
|
|
VersionCodeName string
|
|
}
|
|
|
|
func ParseOSRelease(s string) (OSRelease, error) {
|
|
env, err := godotenv.Parse(strings.NewReader(s))
|
|
if err != nil {
|
|
return OSRelease{}, err
|
|
}
|
|
o := OSRelease{
|
|
ID: Release(strings.ToLower(env["ID"])),
|
|
Name: env["NAME"],
|
|
Version: env["VERSION"],
|
|
VersionID: env["VERSION_ID"],
|
|
VersionCodeName: env["VERSION_CODENAME"],
|
|
}
|
|
return o, nil
|
|
}
|
|
|
|
const (
|
|
osReleaseDockerfile = `
|
|
FROM {{ . }}
|
|
|
|
ENTRYPOINT [""]
|
|
|
|
CMD ["/bin/cat", "/etc/os-release"]
|
|
`
|
|
)
|
|
|
|
var (
|
|
osReleaseDockerfileTemplate = template.Must(template.New("osrelease.Dockerfile").Parse(osReleaseDockerfile))
|
|
)
|
|
|
|
func FetchDockerImageOSRelease(ctx context.Context, img string, tmpPath string) (OSRelease, error) {
|
|
d := filepath.Join(tmpPath, "osrelase.Dockerfile")
|
|
f, err := os.Create(d)
|
|
if err != nil {
|
|
return OSRelease{}, err
|
|
}
|
|
defer f.Close()
|
|
if err := osReleaseDockerfileTemplate.Execute(f, img); err != nil {
|
|
return OSRelease{}, err
|
|
}
|
|
imgTag := fmt.Sprintf("os-release-%s", img)
|
|
if err := docker.Cmd(ctx, "image", "build", "-t", imgTag, "-f", d, tmpPath); err != nil {
|
|
return OSRelease{}, err
|
|
}
|
|
defer func() {
|
|
if err := docker.Cmd(ctx, "image", "rm", imgTag); err != nil {
|
|
logrus.WithError(err).Error("failed to cleanup OSRelease Docker Image")
|
|
}
|
|
}()
|
|
o, _, err := docker.CmdOut(ctx, "run", "--rm", "-i", imgTag)
|
|
if err != nil {
|
|
return OSRelease{}, err
|
|
}
|
|
return ParseOSRelease(o)
|
|
}
|