mirror of
https://github.com/containers/podman.git
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fdad9ab1ff
Includes a switch from XZ to ZSTD for significantly improved fetch performance Signed-off-by: Jason T. Greene <jason.greene@redhat.com>
96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
package wsl
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import (
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"os"
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"path"
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"strings"
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"time"
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"github.com/containers/podman/v5/pkg/machine"
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"github.com/containers/podman/v5/version"
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"github.com/sirupsen/logrus"
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)
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const (
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latestReleaseURL = "https://github.com/containers/podman-machine-wsl-os/releases/latest/download"
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)
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type FedoraDownload struct {
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machine.Download
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}
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func (f FedoraDownload) Get() *machine.Download {
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return &f.Download
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}
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func (f FedoraDownload) HasUsableCache() (bool, error) {
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info, err := os.Stat(f.LocalPath)
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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return false, nil
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}
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return false, err
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}
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return info.Size() == f.Size, nil
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}
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func (f FedoraDownload) CleanCache() error {
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// Set cached image to expire after 2 weeks
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expire := 14 * 24 * time.Hour
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return machine.RemoveImageAfterExpire(f.CacheDir, expire)
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}
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func GetFedoraDownloadForWSL() (*url.URL, string, string, int64, error) {
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arch := machine.DetermineMachineArch()
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if arch != "amd64" && arch != "arm64" {
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return nil, "", "", -1, fmt.Errorf("CPU architecture %q is not supported", arch)
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}
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releaseURL, err := url.Parse(latestReleaseURL)
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if err != nil {
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return nil, "", "", -1, fmt.Errorf("could not parse release URL: %s: %w", releaseURL, err)
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}
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rootFs := fmt.Sprintf("%d.%d-rootfs-%s.tar.zst", version.Version.Major, version.Version.Minor, arch)
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rootFsURL := appendToURL(releaseURL, rootFs)
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resp, err := http.Head(rootFsURL.String())
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if err != nil {
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return nil, "", "", -1, fmt.Errorf("head request failed: %s: %w", releaseURL, err)
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}
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_ = resp.Body.Close()
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contentLen := resp.ContentLength
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if resp.StatusCode != http.StatusOK {
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return nil, "", "", -1, fmt.Errorf("head request failed: %s: %w", rootFsURL, err)
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}
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verURL := appendToURL(releaseURL, "version")
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resp, err = http.Get(verURL.String())
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if err != nil {
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return nil, "", "", -1, fmt.Errorf("get request failed: %s: %w", verURL.String(), err)
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}
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defer func() {
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if err := resp.Body.Close(); err != nil {
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logrus.Errorf("error closing http body: %q", err)
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}
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}()
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b, err := io.ReadAll(&io.LimitedReader{R: resp.Body, N: 1024})
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if err != nil {
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return nil, "", "", -1, fmt.Errorf("failed reading: %s: %w", verURL.String(), err)
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}
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return rootFsURL, strings.TrimSpace(string(b)), arch, contentLen, nil
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}
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func appendToURL(url *url.URL, elem string) *url.URL {
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newURL := *url
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newURL.Path = path.Join(url.Path, elem)
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return &newURL
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}
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