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Remove the workaround for blocking manifest list in replication

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Remove the workaround for blocking manifest list in replication

Signed-off-by: Wenkai Yin <yinw@vmware.com>
This commit is contained in:
Wenkai Yin 2019-12-31 17:11:34 +08:00
parent 6571135cbf
commit 0c776076bd
1 changed files with 2 additions and 42 deletions
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44
src/replication/transfer/image/transfer.go
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@ -16,7 +16,6 @@ package image
import ( import (
"errors" "errors"
"fmt"
"strings" "strings"
"github.com/docker/distribution/manifest/manifestlist" "github.com/docker/distribution/manifest/manifestlist"
@ -259,6 +258,7 @@ func (t *transfer) pullManifest(repository, reference string) (
return nil, "", nil return nil, "", nil
} }
t.logger.Infof("pulling the manifest of image %s:%s ...", repository, reference) t.logger.Infof("pulling the manifest of image %s:%s ...", repository, reference)
// TODO add OCI media types
manifest, digest, err := t.src.PullManifest(repository, reference, []string{ manifest, digest, err := t.src.PullManifest(repository, reference, []string{
schema1.MediaTypeManifest, schema1.MediaTypeManifest,
schema1.MediaTypeSignedManifest, schema1.MediaTypeSignedManifest,
@ -271,47 +271,7 @@ func (t *transfer) pullManifest(repository, reference string) (
} }
t.logger.Infof("the manifest of image %s:%s pulled", repository, reference) t.logger.Infof("the manifest of image %s:%s pulled", repository, reference)
// this is a solution to work around that harbor doesn't support manifest list return manifest, digest, nil
return t.handleManifest(manifest, repository, digest)
}
// if the media type of the specified manifest is manifest list, just abstract one
// manifest from the list and return it
func (t *transfer) handleManifest(manifest distribution.Manifest, repository, digest string) (
distribution.Manifest, string, error) {
mediaType, _, err := manifest.Payload()
if err != nil {
t.logger.Errorf("failed to call the payload method for manifest of %s:%s: %v", repository, digest, err)
return nil, "", err
}
// manifest
if mediaType == schema1.MediaTypeManifest ||
mediaType == schema1.MediaTypeSignedManifest ||
mediaType == schema2.MediaTypeManifest {
return manifest, digest, nil
}
// manifest list
t.logger.Info("trying abstract a manifest from the manifest list...")
manifestlist, ok := manifest.(*manifestlist.DeserializedManifestList)
if !ok {
err := fmt.Errorf("the object isn't a DeserializedManifestList")
t.logger.Errorf(err.Error())
return nil, "", err
}
digest = ""
for _, reference := range manifestlist.Manifests {
if strings.ToLower(reference.Platform.Architecture) == "amd64" &&
strings.ToLower(reference.Platform.OS) == "linux" {
digest = reference.Digest.String()
t.logger.Infof("a manifest(architecture: amd64, os: linux) found, using this one: %s", digest)
break
}
}
if len(digest) == 0 {
digest = manifest.References()[0].Digest.String()
t.logger.Infof("no manifest(architecture: amd64, os: linux) found, using the first one: %s", digest)
}
return t.pullManifest(repository, digest)
} }
func (t *transfer) exist(repository, tag string) (bool, string, error) { func (t *transfer) exist(repository, tag string) (bool, string, error) {