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41999abcbe
It's only used internally, so we can refer to the implementation itself. Given that RegistryService.LookupPullEndpoints now only returns V2 endpoints, we no longer need to check if an endpoint is possibly V1. Also rename some types that had "v2" in their name, now that we only support v2. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
//go:build !windows
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// +build !windows
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package distribution // import "github.com/docker/docker/distribution"
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import (
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"context"
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"sort"
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"github.com/containerd/containerd/platforms"
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"github.com/docker/distribution"
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"github.com/docker/distribution/manifest/manifestlist"
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specs "github.com/opencontainers/image-spec/specs-go/v1"
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"github.com/sirupsen/logrus"
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)
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func (ld *layerDescriptor) open(ctx context.Context) (distribution.ReadSeekCloser, error) {
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blobs := ld.repo.Blobs(ctx)
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return blobs.Open(ctx, ld.digest)
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}
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func filterManifests(manifests []manifestlist.ManifestDescriptor, p specs.Platform) []manifestlist.ManifestDescriptor {
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p = platforms.Normalize(withDefault(p))
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m := platforms.Only(p)
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var matches []manifestlist.ManifestDescriptor
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for _, desc := range manifests {
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if m.Match(toOCIPlatform(desc.Platform)) {
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matches = append(matches, desc)
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logrus.Debugf("found match for %s with media type %s, digest %s", platforms.Format(p), desc.MediaType, desc.Digest.String())
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}
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}
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sort.SliceStable(matches, func(i, j int) bool {
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return m.Less(toOCIPlatform(matches[i].Platform), toOCIPlatform(matches[j].Platform))
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})
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// deprecated: backwards compatibility with older versions that didn't compare variant
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if len(matches) == 0 && p.Architecture == "arm" {
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p = platforms.Normalize(p)
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for _, desc := range manifests {
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if desc.Platform.OS == p.OS && desc.Platform.Architecture == p.Architecture {
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matches = append(matches, desc)
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logrus.Debugf("found deprecated partial match for %s with media type %s, digest %s", platforms.Format(p), desc.MediaType, desc.Digest.String())
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}
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}
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}
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return matches
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}
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// checkImageCompatibility is a Windows-specific function. No-op on Linux
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func checkImageCompatibility(imageOS, imageOSVersion string) error {
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return nil
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}
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func withDefault(p specs.Platform) specs.Platform {
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def := maximumSpec()
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if p.OS == "" {
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p.OS = def.OS
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}
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if p.Architecture == "" {
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p.Architecture = def.Architecture
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p.Variant = def.Variant
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}
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return p
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}
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func formatPlatform(platform specs.Platform) string {
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if platform.OS == "" {
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platform = platforms.DefaultSpec()
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}
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return platforms.Format(platform)
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}
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