re-add the Refresh function for visibility and readability

pkg/cache/memory/repository.go

@@ -83,6 +83,13 @@ func newRepository(id string, repoSpec *configapi.Repository, repo repository.Re
 	return r
 }
 
+func (r *cachedRepository) Refresh(ctx context.Context) error {
+
+	_, _, err := r.refreshAllCachedPackages(ctx)
+
+	return err
+}
+
 func (r *cachedRepository) Version(ctx context.Context) (string, error) {
 	return r.repo.Version(ctx)
 }

pkg/git/git.go

@@ -1709,6 +1709,10 @@ func (r *gitRepository) discoverPackagesInTree(commit *object.Commit, opt Discov
 	return t, nil
 }
 
+func (r *gitRepository) Refresh(_ context.Context) error {
+	return nil
+}
+
 // See https://eli.thegreenplace.net/2021/generic-functions-on-slices-with-go-type-parameters/
 // func ReverseSlice[T any](s []T) { // Ready for generics!
 func reverseSlice(s []v1alpha1.Task) {

pkg/oci/oci.go

@@ -245,6 +245,10 @@ func (r *ociRepository) buildPackageRevision(ctx context.Context, name oci.Image
 	return p, nil
 }
 
+func (r *ociRepository) Refresh(_ context.Context) error {
+	return nil
+}
+
 // ToMainPackageRevision implements repository.PackageRevision.
 func (p *ociPackageRevision) ToMainPackageRevision() repository.PackageRevision {
 	panic("unimplemented")

pkg/repository/fake/repository.go

@@ -80,3 +80,7 @@ func (r *Repository) CreatePackage(_ context.Context, pr *v1alpha1.PorchPackage)
 func (r *Repository) DeletePackage(_ context.Context, pr repository.Package) error {
 	return nil
 }
+
+func (r *Repository) Refresh(_ context.Context) error {
+	return nil
+}

pkg/repository/repository.go

@@ -218,6 +218,9 @@ type Repository interface {
 
 	// Close cleans up any resources associated with the repository
 	Close() error
+
+	// Refresh the repository
+	Refresh(ctx context.Context) error
 }
 
 // The definitions below would be more appropriately located in a package usable by any Porch component.