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Adds new storagedriver.FileWriter interface

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Updates registry storage code to use this for better resumable writes.
Implements this interface for the following drivers:
 + Inmemory
 + Filesystem
 + S3
 + Azure

Signed-off-by: Brian Bland <brian.bland@docker.com>
This commit is contained in:
Brian Bland 2016-02-08 14:29:21 -08:00
parent 7adddecf0b
commit c69c8a3286
25 changed files with 1059 additions and 2488 deletions
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21
docs/storage/linkedblobstore.go
View file

@ -179,7 +179,7 @@ func (lbs *linkedBlobStore) Create(ctx context.Context, options ...distribution.
return nil, err
}
return lbs.newBlobUpload(ctx, uuid, path, startedAt)
return lbs.newBlobUpload(ctx, uuid, path, startedAt, false)
}
func (lbs *linkedBlobStore) Resume(ctx context.Context, id string) (distribution.BlobWriter, error) {
@ -218,7 +218,7 @@ func (lbs *linkedBlobStore) Resume(ctx context.Context, id string) (distribution
return nil, err
}
return lbs.newBlobUpload(ctx, id, path, startedAt)
return lbs.newBlobUpload(ctx, id, path, startedAt, true)
}
func (lbs *linkedBlobStore) Delete(ctx context.Context, dgst digest.Digest) error {
@ -312,18 +312,21 @@ func (lbs *linkedBlobStore) mount(ctx context.Context, sourceRepo reference.Name
}
// newBlobUpload allocates a new upload controller with the given state.
func (lbs *linkedBlobStore) newBlobUpload(ctx context.Context, uuid, path string, startedAt time.Time) (distribution.BlobWriter, error) {
fw, err := newFileWriter(ctx, lbs.driver, path)
func (lbs *linkedBlobStore) newBlobUpload(ctx context.Context, uuid, path string, startedAt time.Time, append bool) (distribution.BlobWriter, error) {
fw, err := lbs.driver.Writer(ctx, path, append)
if err != nil {
return nil, err
}
bw := &blobWriter{
blobStore: lbs,
id: uuid,
startedAt: startedAt,
digester: digest.Canonical.New(),
fileWriter: *fw,
ctx: ctx,
blobStore: lbs,
id: uuid,
startedAt: startedAt,
digester: digest.Canonical.New(),
fileWriter: fw,
driver: lbs.driver,
path: path,
resumableDigestEnabled: lbs.resumableDigestEnabled,
}