Only search active images for matched tags

Instead of search all found image stream tags only search for matched
tags since these are the ones that concern us.

Signed-off-by: Simon Rüegg <simon@rueggs.ch>

cmd/history.go

@@ -81,7 +81,7 @@ func ExecuteHistoryCleanupCommand(args []string) error {
 	}
 	var matchingTags = cleanup.GetMatchingTags(&gitCandidates, &imageStreamTags, matchOption)
 
-	activeImageStreamTags, err := openshift.GetActiveImageStreamTags(namespace, image, imageStreamTags)
+	activeImageStreamTags, err := openshift.GetActiveImageStreamTags(namespace, image, matchingTags)
 	if err != nil {
 		return fmt.Errorf("could not retrieve active image stream tags for '%s/%s': %w", namespace, image, err)
 	}

pkg/openshift/imagestream.go

@@ -24,6 +24,9 @@ var (
 
 // GetActiveImageStreamTags retrieves the image streams tags referenced in some Kubernetes resources
 func GetActiveImageStreamTags(namespace, imageStream string, imageStreamTags []string) (activeImageStreamTags []string, funcError error) {
+	if len(imageStreamTags) == 0 {
+		return []string{}, nil
+	}
 	funk.ForEach(resources, func(resource schema.GroupVersionResource) {
 		funk.ForEach(imageStreamTags, func(imageStreamTag string) {
 			if funk.ContainsString(activeImageStreamTags, imageStreamTag) {