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package operation
import (
"errors"
"strconv"
"time"
"github.com/chrislusf/seaweedfs/go/glog"
)
type VidInfo struct {
Locations []Location
NextRefreshTime time.Time
}
type VidCache struct {
cache []VidInfo
}
func (vc *VidCache) Get(vid string) ([]Location, error) {
id, err := strconv.Atoi(vid)
if err != nil {
glog.V(1).Infof("Unknown volume id %s", vid)
return nil, err
}
if 0 < id && id <= len(vc.cache) {
if vc.cache[id-1].Locations == nil {
return nil, errors.New("Not Set")
}
if vc.cache[id-1].NextRefreshTime.Before(time.Now()) {
return nil, errors.New("Expired")
}
return vc.cache[id-1].Locations, nil
}
return nil, errors.New("Not Found")
}
func (vc *VidCache) Set(vid string, locations []Location, duration time.Duration) {
id, err := strconv.Atoi(vid)
if err != nil {
glog.V(1).Infof("Unknown volume id %s", vid)
return
}
if id > len(vc.cache) {
for i := id - len(vc.cache); i > 0; i-- {
vc.cache = append(vc.cache, VidInfo{})
}
}
if id > 0 {
vc.cache[id-1].Locations = locations
vc.cache[id-1].NextRefreshTime = time.Now().Add(duration)
}
}
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