mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-08-24 18:50:55 +02:00
60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package operation
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import (
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"errors"
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"strconv"
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"sync"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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)
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var ErrorNotFound = errors.New("not found")
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type VidInfo struct {
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Locations []Location
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NextRefreshTime time.Time
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}
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type VidCache struct {
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sync.RWMutex
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cache []VidInfo
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}
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func (vc *VidCache) Get(vid string) ([]Location, error) {
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id, err := strconv.Atoi(vid)
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if err != nil {
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glog.V(1).Infof("Unknown volume id %s", vid)
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return nil, err
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}
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vc.RLock()
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defer vc.RUnlock()
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if 0 < id && id <= len(vc.cache) {
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if vc.cache[id-1].Locations == nil {
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return nil, errors.New("not set")
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}
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if vc.cache[id-1].NextRefreshTime.Before(time.Now()) {
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return nil, errors.New("expired")
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}
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return vc.cache[id-1].Locations, nil
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}
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return nil, ErrorNotFound
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}
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func (vc *VidCache) Set(vid string, locations []Location, duration time.Duration) {
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id, err := strconv.Atoi(vid)
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if err != nil {
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glog.V(1).Infof("Unknown volume id %s", vid)
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return
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}
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vc.Lock()
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defer vc.Unlock()
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if id > len(vc.cache) {
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for i := id - len(vc.cache); i > 0; i-- {
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vc.cache = append(vc.cache, VidInfo{})
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}
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}
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if id > 0 {
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vc.cache[id-1].Locations = locations
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vc.cache[id-1].NextRefreshTime = time.Now().Add(duration)
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}
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}
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