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113 lines
2.3 KiB
113 lines
2.3 KiB
package cache
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import (
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"sync"
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"time"
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"github.com/cloudreve/Cloudreve/v3/pkg/util"
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)
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// MemoStore 内存存储驱动
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type MemoStore struct {
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Store *sync.Map
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}
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// item 存储的对象
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type itemWithTTL struct {
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expires int64
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value interface{}
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}
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func newItem(value interface{}, expires int) itemWithTTL {
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expires64 := int64(expires)
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if expires > 0 {
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expires64 = time.Now().Unix() + expires64
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}
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return itemWithTTL{
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value: value,
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expires: expires64,
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}
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}
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// getValue 从itemWithTTL中取值
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func getValue(item interface{}, ok bool) (interface{}, bool) {
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if !ok {
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return nil, ok
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}
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var itemObj itemWithTTL
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if itemObj, ok = item.(itemWithTTL); !ok {
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return item, true
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}
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if itemObj.expires > 0 && itemObj.expires < time.Now().Unix() {
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return nil, false
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}
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return itemObj.value, ok
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}
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// GarbageCollect 回收已过期的缓存
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func (store *MemoStore) GarbageCollect() {
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store.Store.Range(func(key, value interface{}) bool {
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if item, ok := value.(itemWithTTL); ok {
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if item.expires > 0 && item.expires < time.Now().Unix() {
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util.Log().Debug("Cache %q is garbage collected.", key.(string))
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store.Store.Delete(key)
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}
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}
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return true
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})
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}
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// NewMemoStore 新建内存存储
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func NewMemoStore() *MemoStore {
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return &MemoStore{
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Store: &sync.Map{},
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}
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}
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// Set 存储值
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func (store *MemoStore) Set(key string, value interface{}, ttl int) error {
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store.Store.Store(key, newItem(value, ttl))
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return nil
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}
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// Get 取值
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func (store *MemoStore) Get(key string) (interface{}, bool) {
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return getValue(store.Store.Load(key))
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}
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// Gets 批量取值
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func (store *MemoStore) Gets(keys []string, prefix string) (map[string]interface{}, []string) {
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var res = make(map[string]interface{})
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var notFound = make([]string, 0, len(keys))
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for _, key := range keys {
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if value, ok := getValue(store.Store.Load(prefix + key)); ok {
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res[key] = value
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} else {
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notFound = append(notFound, key)
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}
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}
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return res, notFound
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}
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// Sets 批量设置值
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func (store *MemoStore) Sets(values map[string]interface{}, prefix string) error {
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for key, value := range values {
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store.Store.Store(prefix+key, value)
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}
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return nil
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}
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// Delete 批量删除值
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func (store *MemoStore) Delete(keys []string, prefix string) error {
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for _, key := range keys {
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store.Store.Delete(prefix + key)
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}
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return nil
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}
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