ceremonyclient/go-libp2p/p2p/host/peerstore/pstoreds/cache.go
2023-08-20 23:07:43 -05:00

41 lines
874 B
Go

package pstoreds
// cache abstracts all methods we access from ARCCache, to enable alternate
// implementations such as a no-op one.
type cache[K comparable, V any] interface {
Get(key K) (value V, ok bool)
Add(key K, value V)
Remove(key K)
Contains(key K) bool
Peek(key K) (value V, ok bool)
Keys() []K
}
// noopCache is a dummy implementation that's used when the cache is disabled.
type noopCache[K comparable, V any] struct {
}
var _ cache[int, int] = (*noopCache[int, int])(nil)
func (*noopCache[K, V]) Get(key K) (value V, ok bool) {
return *new(V), false
}
func (*noopCache[K, V]) Add(key K, value V) {
}
func (*noopCache[K, V]) Remove(key K) {
}
func (*noopCache[K, V]) Contains(key K) bool {
return false
}
func (*noopCache[K, V]) Peek(key K) (value V, ok bool) {
return *new(V), false
}
func (*noopCache[K, V]) Keys() (keys []K) {
return keys
}