Use references terminology instead of layers.

Signed-off-by: Andrew Leung <anwleung@gmail.com>

notifications/bridge.go

@@ -12,12 +12,12 @@ import (
 )
 
 type bridge struct {
-	ub             URLBuilder
-	manifestLayers bool
-	actor          ActorRecord
-	source         SourceRecord
-	request        RequestRecord
-	sink           Sink
+	ub                URLBuilder
+	includeReferences bool
+	actor             ActorRecord
+	source            SourceRecord
+	request           RequestRecord
+	sink              Sink
 }
 
 var _ Listener = &bridge{}
@@ -32,14 +32,14 @@ type URLBuilder interface {
 // using the actor and source. Any urls populated in the events created by
 // this bridge will be created using the URLBuilder.
 // TODO(stevvooe): Update this to simply take a context.Context object.
-func NewBridge(ub URLBuilder, source SourceRecord, actor ActorRecord, request RequestRecord, sink Sink, manifestLayers bool) Listener {
+func NewBridge(ub URLBuilder, source SourceRecord, actor ActorRecord, request RequestRecord, sink Sink, includeReferences bool) Listener {
 	return &bridge{
-		ub:             ub,
-		manifestLayers: manifestLayers,
-		actor:          actor,
-		source:         source,
-		request:        request,
-		sink:           sink,
+		ub:                ub,
+		includeReferences: includeReferences,
+		actor:             actor,
+		source:            source,
+		request:           request,
+		sink:              sink,
 	}
 }
 
@@ -146,8 +146,8 @@ func (b *bridge) createManifestEvent(action string, repo reference.Named, sm dis
 	event.Target.Length = desc.Size
 	event.Target.Size = desc.Size
 	event.Target.Digest = desc.Digest
-	if b.manifestLayers {
-		event.Target.Layers = append(event.Target.Layers, manifest.References()...)
+	if b.includeReferences {
+		event.Target.References = append(event.Target.References, manifest.References()...)
 	}
 
 	ref, err := reference.WithDigest(repo, event.Target.Digest)

notifications/bridge_test.go

@@ -180,12 +180,12 @@ func checkCommonManifest(t *testing.T, action string, events ...Event) {
 		t.Fatalf("incorrect url passed: \n%q != \n%q", event.Target.URL, u)
 	}
 
-	if len(event.Target.Layers) != len(layers) {
-		t.Fatalf("unexpected number of layers %v != %v", len(event.Target.Layers), len(layers))
+	if len(event.Target.References) != len(layers) {
+		t.Fatalf("unexpected number of references %v != %v", len(event.Target.References), len(layers))
 	}
-	for i, layer := range event.Target.Layers {
-		if layer.Digest != layers[i].BlobSum {
-			t.Fatalf("unexpected layer: %q != %q", layer.Digest, layers[i].BlobSum)
+	for i, targetReference := range event.Target.References {
+		if targetReference.Digest != layers[i].BlobSum {
+			t.Fatalf("unexpected reference: %q != %q", targetReference.Digest, layers[i].BlobSum)
 		}
 	}
 }

notifications/event.go

@@ -72,8 +72,8 @@ type Event struct {
 		// Tag provides the tag
 		Tag string `json:"tag,omitempty"`
 
-		// Layers provides the layers descriptors.
-		Layers []distribution.Descriptor `json:"layers,omitempty"`
+		// References provides the references descriptors.
+		References []distribution.Descriptor `json:"references,omitempty"`
 	} `json:"target,omitempty"`
 
 	// Request covers the request that generated the event.