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add tag deletion event

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whenever a tag is deleted an event is sent out via the regular
notification channels

Signed-off-by: Manish Tomar <manish.tomar@docker.com>
This commit is contained in:
Manish Tomar 2018-07-18 11:25:59 -07:00
parent f0cc927784
commit 0d8f4ac7b8
4 changed files with 66 additions and 7 deletions
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30
notifications/listener.go
View file

@ -5,6 +5,7 @@ import (
"net/http"
"github.com/docker/distribution"
dcontext "github.com/docker/distribution/context"
"github.com/docker/distribution/reference"
"github.com/opencontainers/go-digest"
@ -25,10 +26,16 @@ type BlobListener interface {
BlobDeleted(repo reference.Named, desc digest.Digest) error
}
// RepoListener describes a listener that can respond to repository related events.
type RepoListener interface {
TagDeleted(repo reference.Named, tag string) error
}
// Listener combines all repository events into a single interface.
type Listener interface {
ManifestListener
BlobListener
RepoListener
}
type repositoryListener struct {
@ -214,3 +221,26 @@ func (bwl *blobWriterListener) Commit(ctx context.Context, desc distribution.Des
return committed, err
}
type tagServiceListener struct {
distribution.TagService
parent *repositoryListener
}
func (rl *repositoryListener) Tags(ctx context.Context) distribution.TagService {
return &tagServiceListener{
TagService: rl.Repository.Tags(ctx),
parent: rl,
}
}
func (tagSL *tagServiceListener) Untag(ctx context.Context, tag string) error {
if err := tagSL.TagService.Untag(ctx, tag); err != nil {
return err
}
if err := tagSL.parent.listener.TagDeleted(tagSL.parent.Repository.Named(), tag); err != nil {
dcontext.GetLogger(ctx).Errorf("error dispatching tag deleted to listener: %v", err)
return err
}
return nil
}