100 lines
1.9 KiB
Go
100 lines
1.9 KiB
Go
package cache
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import (
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"context"
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"github.com/fthvgb1/wp-go/safety"
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"time"
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)
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type MemoryMapCache[K comparable, V any] struct {
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*safety.Map[K, mapVal[V]]
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expireTime func() time.Duration
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}
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func NewMemoryMapCache[K comparable, V any](expireTime func() time.Duration) *MemoryMapCache[K, V] {
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return &MemoryMapCache[K, V]{
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Map: safety.NewMap[K, mapVal[V]](),
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expireTime: expireTime,
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}
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}
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type mapVal[T any] struct {
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setTime time.Time
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ver int
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data T
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}
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func (m *MemoryMapCache[K, V]) SetExpiredTime(f func() time.Duration) {
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m.expireTime = f
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}
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func (m *MemoryMapCache[K, V]) GetExpireTime(_ context.Context) time.Duration {
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return m.expireTime()
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}
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func (m *MemoryMapCache[K, V]) Get(_ context.Context, key K) (r V, ok bool) {
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v, ok := m.Load(key)
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if !ok {
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return
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}
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r = v.data
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t := m.expireTime() - time.Now().Sub(v.setTime)
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if t <= 0 {
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ok = false
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}
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return
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}
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func (m *MemoryMapCache[K, V]) Set(_ context.Context, key K, val V) {
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v, ok := m.Load(key)
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t := time.Now()
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if ok {
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v.data = val
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v.setTime = t
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v.ver++
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} else {
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v = mapVal[V]{
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setTime: t,
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ver: 1,
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data: val,
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}
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}
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m.Store(key, v)
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}
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func (m *MemoryMapCache[K, V]) Ttl(_ context.Context, key K) time.Duration {
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v, ok := m.Load(key)
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if !ok {
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return time.Duration(-1)
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}
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return m.expireTime() - time.Now().Sub(v.setTime)
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}
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func (m *MemoryMapCache[K, V]) Ver(_ context.Context, key K) int {
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v, ok := m.Load(key)
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if !ok {
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return -1
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}
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return v.ver
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}
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func (m *MemoryMapCache[K, V]) Flush(context.Context) {
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m.Map.Flush()
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}
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func (m *MemoryMapCache[K, V]) Del(_ context.Context, keys ...K) {
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for _, key := range keys {
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m.Map.Delete(key)
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}
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}
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func (m *MemoryMapCache[K, V]) ClearExpired(_ context.Context) {
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now := time.Duration(time.Now().UnixNano())
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m.Range(func(k K, v mapVal[V]) bool {
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if now > time.Duration(v.setTime.UnixNano())+m.expireTime() {
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m.Map.Delete(k)
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}
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return true
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})
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}
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