92 lines
1.7 KiB
Go
92 lines
1.7 KiB
Go
package ccache
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import (
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"sync"
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"time"
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)
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type layeredBucket struct {
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sync.RWMutex
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buckets map[string]*bucket
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}
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func (b *layeredBucket) itemCount() int {
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count := 0
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b.RLock()
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defer b.RUnlock()
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for _, b := range b.buckets {
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count += b.itemCount()
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}
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return count
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}
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func (b *layeredBucket) get(primary, secondary string) *Item {
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bucket := b.getSecondaryBucket(primary)
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if bucket == nil {
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return nil
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}
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return bucket.get(secondary)
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}
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func (b *layeredBucket) getSecondaryBucket(primary string) *bucket {
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b.RLock()
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bucket, exists := b.buckets[primary]
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b.RUnlock()
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if exists == false {
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return nil
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}
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return bucket
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}
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func (b *layeredBucket) set(primary, secondary string, value interface{}, duration time.Duration) (*Item, *Item) {
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b.Lock()
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bkt, exists := b.buckets[primary]
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if exists == false {
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bkt = &bucket{lookup: make(map[string]*Item)}
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b.buckets[primary] = bkt
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}
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b.Unlock()
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item, existing := bkt.set(secondary, value, duration)
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item.group = primary
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return item, existing
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}
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func (b *layeredBucket) delete(primary, secondary string) *Item {
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b.RLock()
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bucket, exists := b.buckets[primary]
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b.RUnlock()
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if exists == false {
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return nil
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}
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return bucket.delete(secondary)
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}
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func (b *layeredBucket) deleteAll(primary string, deletables chan *Item) bool {
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b.RLock()
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bucket, exists := b.buckets[primary]
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b.RUnlock()
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if exists == false {
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return false
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}
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bucket.Lock()
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defer bucket.Unlock()
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if l := len(bucket.lookup); l == 0 {
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return false
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}
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for key, item := range bucket.lookup {
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delete(bucket.lookup, key)
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deletables <- item
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}
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return true
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}
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func (b *layeredBucket) clear() {
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b.Lock()
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defer b.Unlock()
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for _, bucket := range b.buckets {
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bucket.clear()
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}
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b.buckets = make(map[string]*bucket)
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}
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