Method KeyOf

tools/cache/delta_fifo.go:150–161

KeyOf exposes f's keyFunc, but also detects the key of a Deltas object or DeletedFinalStateUnknown objects.

(obj interface{})

// KeyOf exposes f's keyFunc, but also detects the key of a Deltas object or
// DeletedFinalStateUnknown objects.
func (f *DeltaFIFO) KeyOf(obj interface{}) (string, error) {
	if d, ok := obj.(Deltas); ok {
		if len(d) == 0 {
			return "", KeyError{obj, ErrZeroLengthDeltasObject}
		}
		obj = d.Newest().Object
	}
	if d, ok := obj.(DeletedFinalStateUnknown); ok {
		return d.Key, nil
	}
	return f.keyFunc(obj)
}

// Return true if an Add/Update/Delete/AddIfNotPresent are called first,
// or an Update called first but the first batch of items inserted by Replace() has been popped