matcher

type Differ interface {
	// DeleteUpdateOperations marks the provided refs as seen and processed.
	DeleteUpdateOperations(context.Context, ...uuid.UUID) error
	// UpdateDiff reports the differences between the provided refs.
	//
	// "Prev" can be `uuid.Nil` to indicate "earliest known ref."
	UpdateDiff(_ context.Context, prev, cur uuid.UUID) (*driver.UpdateDiff, error)
	// LatestUpdateOperations returns a ref for the most recent update operation
	// per updater.
	LatestUpdateOperations(context.Context) (map[string]uuid.UUID, error)
	// LatestUpdateOperation returns a ref for the most recent update operation
	// across all updaters.
	LatestUpdateOperation(context.Context) (uuid.UUID, error)
}

type Scanner interface {
	Scan(ctx context.Context, ir *claircore.IndexReport) (*claircore.VulnerabilityReport, error)
}

type Service interface {
	Scanner
	Differ
}