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protect locations slice

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fix https://github.com/chrislusf/seaweedfs/issues/995
This commit is contained in:
Chris Lu
2019-06-28 09:47:29 -07:00
parent 327336ecf3
commit 9f3f2f7c79
1 changed files with 13 additions and 6 deletions
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19
weed/wdclient/vid_map.go
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@@ -37,12 +37,7 @@ func (vc *vidMap) LookupVolumeServerUrl(vid string) (serverUrl string, err error
return "", err
}
locations := vc.GetLocations(uint32(id))
if len(locations) == 0 {
return "", fmt.Errorf("volume %d not found", id)
}
return locations[vc.r.Intn(len(locations))].Url, nil
return vc.GetRandomLocation(uint32(id))
}
func (vc *vidMap) LookupFileId(fileId string) (fullUrl string, err error) {
@@ -85,6 +80,18 @@ func (vc *vidMap) GetLocations(vid uint32) (locations []Location) {
return vc.vid2Locations[vid]
}
func (vc *vidMap) GetRandomLocation(vid uint32) (serverUrl string, err error) {
vc.RLock()
defer vc.RUnlock()
locations := vc.vid2Locations[vid]
if len(locations) == 0 {
return "", fmt.Errorf("volume %d not found", id)
}
return locations[vc.r.Intn(len(locations))].Url, nil
}
func (vc *vidMap) addLocation(vid uint32, location Location) {
vc.Lock()
defer vc.Unlock()