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Add manifest type conversion to skopeo with dir transport

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User can select from 3 manifest types: oci, v2s1, or v2s2
skopeo copy defaults to oci manifest if the --format flag is not set
Adds option to compress blobs when saving to the directory using the dir transport
e.g skopeo copy --format v2s1 --compress-blobs docker-archive:alp.tar dir:my-directory

Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
This commit is contained in:
Urvashi Mohnani
2017-11-07 15:57:17 -05:00
parent 5b14746045
commit 409dce8a89
6 changed files with 81 additions and 20 deletions
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27
integration/copy_test.go
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@@ -15,6 +15,7 @@ import (
"github.com/containers/image/signature"
"github.com/go-check/check"
"github.com/opencontainers/go-digest"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/opencontainers/image-tools/image"
)
@@ -591,6 +592,32 @@ func (s *CopySuite) TestCopySchemaConversion(c *check.C) {
s.testCopySchemaConversionRegistries(c, "docker://"+v2s1DockerRegistryURL+"/schema1", "docker://"+v2DockerRegistryURL+"/schema2")
}
func (s *CopySuite) TestCopyManifestConversion(c *check.C) {
topDir, err := ioutil.TempDir("", "manifest-conversion")
c.Assert(err, check.IsNil)
defer os.RemoveAll(topDir)
srcDir := filepath.Join(topDir, "source")
destDir1 := filepath.Join(topDir, "dest1")
destDir2 := filepath.Join(topDir, "dest2")
// oci to v2s1 and vice-versa not supported yet
// get v2s2 manifest type
assertSkopeoSucceeds(c, "", "copy", "docker://busybox", "dir:"+srcDir)
verifyManifestMIMEType(c, srcDir, manifest.DockerV2Schema2MediaType)
// convert from v2s2 to oci
assertSkopeoSucceeds(c, "", "copy", "--format=oci", "dir:"+srcDir, "dir:"+destDir1)
verifyManifestMIMEType(c, destDir1, imgspecv1.MediaTypeImageManifest)
// convert from oci to v2s2
assertSkopeoSucceeds(c, "", "copy", "--format=v2s2", "dir:"+destDir1, "dir:"+destDir2)
verifyManifestMIMEType(c, destDir2, manifest.DockerV2Schema2MediaType)
// convert from v2s2 to v2s1
assertSkopeoSucceeds(c, "", "copy", "--format=v2s1", "dir:"+srcDir, "dir:"+destDir1)
verifyManifestMIMEType(c, destDir1, manifest.DockerV2Schema1SignedMediaType)
// convert from v2s1 to v2s2
assertSkopeoSucceeds(c, "", "copy", "--format=v2s2", "dir:"+destDir1, "dir:"+destDir2)
verifyManifestMIMEType(c, destDir2, manifest.DockerV2Schema2MediaType)
}
func (s *CopySuite) testCopySchemaConversionRegistries(c *check.C, schema1Registry, schema2Registry string) {
topDir, err := ioutil.TempDir("", "schema-conversion")
c.Assert(err, check.IsNil)