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//go:build !windows
// +build !windows
package distribution // import "github.com/docker/docker/distribution"
import (
"context"
"sort"
"github.com/containerd/containerd/platforms"
"github.com/docker/distribution"
"github.com/docker/distribution/manifest/manifestlist"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/sirupsen/logrus"
)
func (ld *layerDescriptor) open(ctx context.Context) (distribution.ReadSeekCloser, error) {
blobs := ld.repo.Blobs(ctx)
return blobs.Open(ctx, ld.digest)
}
func filterManifests(manifests []manifestlist.ManifestDescriptor, p ocispec.Platform) []manifestlist.ManifestDescriptor {
p = platforms.Normalize(withDefault(p))
m := platforms.Only(p)
var matches []manifestlist.ManifestDescriptor
for _, desc := range manifests {
descP := toOCIPlatform(desc.Platform)
if descP == nil || m.Match(*descP) {
matches = append(matches, desc)
if descP != nil {
logrus.Debugf("found match for %s with media type %s, digest %s", platforms.Format(p), desc.MediaType, desc.Digest.String())
}
}
}
sort.SliceStable(matches, func(i, j int) bool {
p1 := toOCIPlatform(matches[i].Platform)
if p1 == nil {
return false
}
p2 := toOCIPlatform(matches[j].Platform)
if p2 == nil {
return true
}
return m.Less(*p1, *p2)
})
return matches
}
// checkImageCompatibility is a Windows-specific function. No-op on Linux
func checkImageCompatibility(imageOS, imageOSVersion string) error {
return nil
}
func withDefault(p ocispec.Platform) ocispec.Platform {
def := maximumSpec()
if p.OS == "" {
p.OS = def.OS
}
if p.Architecture == "" {
p.Architecture = def.Architecture
p.Variant = def.Variant
}
return p
}
func formatPlatform(platform ocispec.Platform) string {
if platform.OS == "" {
platform = platforms.DefaultSpec()
}
return platforms.Format(platform)
}
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