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Adds functional options arguments to the Blobs Create method

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Removes the Mount operation and instead implements this behavior as part
of Create a From option is provided, which in turn returns a rich
ErrBlobMounted indicating that a blob upload session was not initiated,
but instead the blob was mounted from another repository

Signed-off-by: Brian Bland <brian.bland@docker.com>
This commit is contained in:
Brian Bland 2016-01-13 11:44:42 -08:00
parent 66b492e69f
commit 36023174db
7 changed files with 146 additions and 93 deletions
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21
docs/storage/blob_test.go
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@ -12,6 +12,7 @@ import (
"github.com/docker/distribution"
"github.com/docker/distribution/context"
"github.com/docker/distribution/digest"
"github.com/docker/distribution/reference"
"github.com/docker/distribution/registry/storage/cache/memory"
"github.com/docker/distribution/registry/storage/driver/inmemory"
"github.com/docker/distribution/testutil"
@ -377,13 +378,27 @@ func TestBlobMount(t *testing.T) {
t.Fatalf("unexpected non-error stating unmounted blob: %v", desc)
}
mountDesc, err := bs.Mount(ctx, sourceRepository.Name(), desc.Digest)
namedRef, err := reference.ParseNamed(sourceRepository.Name())
if err != nil {
t.Fatal(err)
}
canonicalRef, err := reference.WithDigest(namedRef, desc.Digest)
if err != nil {
t.Fatal(err)
}
bw, err := bs.Create(ctx, WithMountFrom(canonicalRef))
if bw != nil {
t.Fatal("unexpected blobwriter returned from Create call, should mount instead")
}
ebm, ok := err.(distribution.ErrBlobMounted)
if !ok {
t.Fatalf("unexpected error mounting layer: %v", err)
}
if mountDesc != desc {
t.Fatalf("descriptors not equal: %v != %v", mountDesc, desc)
if ebm.Descriptor != desc {
t.Fatalf("descriptors not equal: %v != %v", ebm.Descriptor, desc)
}
// Test for existence.