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Remove extra roundtrip for checking schema1.

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Signed-off-by: Lantao Liu <lantaol@google.com>
This commit is contained in:
Lantao Liu 2019-08-09 18:47:40 -07:00
parent a7481289bb
commit d64fa3b6b8
1 changed files with 14 additions and 11 deletions
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19
pkg/server/image_pull.go
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@ -94,17 +94,19 @@ func (c *criService) PullImage(ctx context.Context, r *runtime.PullImageRequest)
if ref != imageRef {
log.G(ctx).Debugf("PullImage using normalized image ref: %q", ref)
}
resolver := docker.NewResolver(docker.ResolverOptions{
var (
resolver = docker.NewResolver(docker.ResolverOptions{
Hosts: c.registryHosts(r.GetAuth()),
})
_, desc, err := resolver.Resolve(ctx, ref)
if err != nil {
return nil, errors.Wrapf(err, "failed to resolve image %q", ref)
isSchema1 bool
imageHandler containerdimages.HandlerFunc = func(_ context.Context,
desc imagespec.Descriptor) ([]imagespec.Descriptor, error) {
if desc.MediaType == containerdimages.MediaTypeDockerSchema1Manifest {
isSchema1 = true
}
// We have to check schema1 here, because after `Pull`, schema1
// image has already been converted.
isSchema1 := desc.MediaType == containerdimages.MediaTypeDockerSchema1Manifest
return nil, nil
}
)
image, err := c.client.Pull(ctx, ref,
containerd.WithSchema1Conversion,
containerd.WithResolver(resolver),
@ -112,6 +114,7 @@ func (c *criService) PullImage(ctx context.Context, r *runtime.PullImageRequest)
containerd.WithPullUnpack,
containerd.WithPullLabel(imageLabelKey, imageLabelValue),
containerd.WithMaxConcurrentDownloads(c.config.MaxConcurrentDownloads),
containerd.WithImageHandler(imageHandler),
)
if err != nil {
return nil, errors.Wrapf(err, "failed to pull and unpack image %q", ref)