alist/internal/offline_download/thunder/util.go

43 lines
1.0 KiB
Go

package thunder
import (
"context"
"time"
"github.com/Xhofe/go-cache"
"github.com/alist-org/alist/v3/drivers/thunder"
"github.com/alist-org/alist/v3/internal/op"
"github.com/alist-org/alist/v3/pkg/singleflight"
)
var taskCache = cache.NewMemCache(cache.WithShards[[]thunder.OfflineTask](16))
var taskG singleflight.Group[[]thunder.OfflineTask]
func (t *Thunder) GetTasks(thunderDriver *thunder.Thunder) ([]thunder.OfflineTask, error) {
key := op.Key(thunderDriver, "/drive/v1/task")
if !t.refreshTaskCache {
if tasks, ok := taskCache.Get(key); ok {
return tasks, nil
}
}
t.refreshTaskCache = false
tasks, err, _ := taskG.Do(key, func() ([]thunder.OfflineTask, error) {
ctx := context.Background()
tasks, err := thunderDriver.OfflineList(ctx, "")
if err != nil {
return nil, err
}
// 添加缓存 10s
if len(tasks) > 0 {
taskCache.Set(key, tasks, cache.WithEx[[]thunder.OfflineTask](time.Second*10))
} else {
taskCache.Del(key)
}
return tasks, nil
})
if err != nil {
return nil, err
}
return tasks, nil
}