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Stop filtering Windows manifest lists by version

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Signed-off-by: John Stephens <johnstep@docker.com>
(cherry picked from commit 8ed8f4a71d7e1a936fa077b4348b7375c81746a6)

Conflicts:
	components/engine/distribution/pull_v2_windows.go

Signed-off-by: John Stephens <johnstep@docker.com>
This commit is contained in:
John Stephens
2017-10-10 21:42:19 -07:00
parent f437cf754f
commit 76922d8690
1 changed files with 14 additions and 17 deletions
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components/engine/distribution/pull_v2_windows.go
+14 -17
View File
@@ -75,43 +75,40 @@ func filterManifests(manifests []manifestlist.ManifestDescriptor) []manifestlist
var matches []manifestlist.ManifestDescriptor
for _, manifestDescriptor := range manifests {
// TODO: Consider filtering out greater versions, including only greater UBR
if manifestDescriptor.Platform.Architecture == runtime.GOARCH && manifestDescriptor.Platform.OS == lookingForOS {
if !versionMatch(manifestDescriptor.Platform.OSVersion, osVersion) {
continue
}
matches = append(matches, manifestDescriptor)
logrus.Debugf("found match for %s/%s with media type %s, digest %s", runtime.GOOS, runtime.GOARCH, manifestDescriptor.MediaType, manifestDescriptor.Digest.String())
}
}
sort.Stable(manifestsByVersion(matches))
if lookingForOS == "windows" {
sort.Stable(manifestsByVersion{osVersion, matches})
}
return matches
}
func versionMatch(actual, expected string) bool {
// Check whether actual and expected are equivalent, or whether
// expected is a version prefix of actual.
return actual == "" || expected == "" || actual == expected || strings.HasPrefix(actual, expected+".")
// Check whether the version matches up to the build, ignoring UBR
return strings.HasPrefix(actual, expected+".")
}
type manifestsByVersion []manifestlist.ManifestDescriptor
type manifestsByVersion struct {
version string
list []manifestlist.ManifestDescriptor
}
func (mbv manifestsByVersion) Less(i, j int) bool {
if mbv[i].Platform.OSVersion == "" {
return false
}
if mbv[j].Platform.OSVersion == "" {
return true
}
// TODO: Split version by parts and compare
// TODO: Prefer versions which have a greater version number
return false
// Move compatible versions to the top, with no other ordering changes
return versionMatch(mbv.list[i].Platform.OSVersion, mbv.version) && !versionMatch(mbv.list[j].Platform.OSVersion, mbv.version)
}
func (mbv manifestsByVersion) Len() int {
return len(mbv)
return len(mbv.list)
}
func (mbv manifestsByVersion) Swap(i, j int) {
mbv[i], mbv[j] = mbv[j], mbv[i]
mbv.list[i], mbv.list[j] = mbv.list[j], mbv.list[i]
}