fix: revert "org.opencontainers.referrers.filtersApplied" (#1478)

As per latest dist-spec, this is now removed.

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

Author: rchincha

pkg/storage/common/common.go

@@ -560,26 +560,6 @@ func GetOrasReferrers(imgStore storageTypes.ImageStore, repo string, gdigest god
 	return result, nil
 }
 
-func getReferrerFilterAnnotation(artifactTypes []string) string {
-	// as per spec, return what filters were applied as an annotation if artifactTypes
-	annotation := ""
-
-	for _, artifactType := range artifactTypes {
-		if artifactType == "" {
-			// ignore empty artifactTypes
-			continue
-		}
-
-		if annotation == "" {
-			annotation = artifactType
-		} else {
-			annotation += "," + artifactType
-		}
-	}
-
-	return annotation
-}
-
 func GetReferrers(imgStore storageTypes.ImageStore, repo string, gdigest godigest.Digest, artifactTypes []string,
 	log zerolog.Logger,
 ) (ispec.Index, error) {
@@ -653,12 +633,6 @@ func GetReferrers(imgStore storageTypes.ImageStore, repo string, gdigest godiges
 		Annotations: map[string]string{},
 	}
 
-	// as per spec, return what filters were applied as an annotation if artifactTypes
-	if annotation := getReferrerFilterAnnotation(artifactTypes); annotation != "" {
-		index.Annotations[storageConstants.ReferrerFilterAnnotation] = annotation
-		log.Info().Str("annotation", annotation).Msg("filters applied")
-	}
-
 	return index, nil
 }
 

pkg/storage/constants/constants.go

@@ -6,20 +6,19 @@ import (
 
 const (
 	// BlobUploadDir defines the upload directory for blob uploads.
-	BlobUploadDir            = ".uploads"
-	SchemaVersion            = 2
-	DefaultFilePerms         = 0o600
-	DefaultDirPerms          = 0o700
-	RLOCK                    = "RLock"
-	RWLOCK                   = "RWLock"
-	BlobsCache               = "blobs"
-	DuplicatesBucket         = "duplicates"
-	OriginalBucket           = "original"
-	DBExtensionName          = ".db"
-	DBCacheLockCheckTimeout  = 10 * time.Second
-	BoltdbName               = "cache"
-	ReferrerFilterAnnotation = "org.opencontainers.referrers.filtersApplied"
-	DynamoDBDriverName       = "dynamodb"
-	DefaultGCDelay           = 1 * time.Hour
-	S3StorageDriverName      = "s3"
+	BlobUploadDir           = ".uploads"
+	SchemaVersion           = 2
+	DefaultFilePerms        = 0o600
+	DefaultDirPerms         = 0o700
+	RLOCK                   = "RLock"
+	RWLOCK                  = "RWLock"
+	BlobsCache              = "blobs"
+	DuplicatesBucket        = "duplicates"
+	OriginalBucket          = "original"
+	DBExtensionName         = ".db"
+	DBCacheLockCheckTimeout = 10 * time.Second
+	BoltdbName              = "cache"
+	DynamoDBDriverName      = "dynamodb"
+	DefaultGCDelay          = 1 * time.Hour
+	S3StorageDriverName     = "s3"
 )