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//go:build amd64 || arm64
// +build amd64 arm64
package machine
import (
"errors"
"fmt"
"io"
"os"
"path"
"strings"
"net/http"
"net/url"
"path/filepath"
"time"
)
const (
githubLatestReleaseURL = "https://github.com/containers/podman-wsl-fedora/releases/latest/download/rootfs.tar.xz"
)
type FedoraDownload struct {
Download
}
func NewFedoraDownloader(vmType, vmName, releaseStream string) (DistributionDownload, error) {
downloadURL, version, size, err := getFedoraDownload(githubLatestReleaseURL)
if err != nil {
return nil, err
}
cacheDir, err := GetCacheDir(vmType)
if err != nil {
return nil, err
}
imageName := fmt.Sprintf("fedora-podman-%s.tar.xz", version)
f := FedoraDownload{
Download: Download{
Arch: getFcosArch(),
Artifact: artifact,
CacheDir: cacheDir,
Format: Format,
ImageName: imageName,
LocalPath: filepath.Join(cacheDir, imageName),
URL: downloadURL,
VMName: vmName,
Size: size,
},
}
dataDir, err := GetDataDir(vmType)
if err != nil {
return nil, err
}
f.Download.LocalUncompressedFile = f.getLocalUncompressedFile(dataDir)
return f, nil
}
func (f FedoraDownload) Get() *Download {
return &f.Download
}
func (f FedoraDownload) HasUsableCache() (bool, error) {
info, err := os.Stat(f.LocalPath)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
return false, nil
}
return false, err
}
return info.Size() == f.Size, nil
}
func (f FedoraDownload) CleanCache() error {
// Set cached image to expire after 2 weeks
expire := 14 * 24 * time.Hour
return removeImageAfterExpire(f.CacheDir, expire)
}
func getFedoraDownload(releaseURL string) (*url.URL, string, int64, error) {
downloadURL, err := url.Parse(releaseURL)
if err != nil {
return nil, "", -1, fmt.Errorf("invalid URL generated from discovered Fedora file: %s: %w", releaseURL, err)
}
resp, err := http.Head(releaseURL)
if err != nil {
return nil, "", -1, fmt.Errorf("head request failed: %s: %w", releaseURL, err)
}
_ = resp.Body.Close()
contentLen := resp.ContentLength
if resp.StatusCode != http.StatusOK {
return nil, "", -1, fmt.Errorf("head request failed: %s: %w", releaseURL, err)
}
verURL := *downloadURL
verURL.Path = path.Join(path.Dir(downloadURL.Path), "version")
resp, err = http.Get(verURL.String())
if err != nil {
return nil, "", -1, fmt.Errorf("get request failed: %s: %w", verURL.String(), err)
}
defer resp.Body.Close()
bytes, err := io.ReadAll(&io.LimitedReader{R: resp.Body, N: 1024})
if err != nil {
return nil, "", -1, fmt.Errorf("failed reading: %s: %w", verURL.String(), err)
}
return downloadURL, strings.TrimSpace(string(bytes)), contentLen, nil
}
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