package topology import ( "fmt" "math/rand" "code.google.com/p/weed-fs/go/storage" "time" ) func (t *Topology) StartRefreshWritableVolumes(garbageThreshold string) { go func() { for { freshThreshHold := time.Now().Unix() - 3*t.pulse //3 times of sleep interval t.CollectDeadNodeAndFullVolumes(freshThreshHold, t.volumeSizeLimit) time.Sleep(time.Duration(float32(t.pulse*1e3)*(1+rand.Float32())) * time.Millisecond) } }() go func(garbageThreshold string) { c := time.Tick(15 * time.Minute) for _ = range c { t.Vacuum(garbageThreshold) } }(garbageThreshold) go func() { for { select { case v := <-t.chanFullVolumes: t.SetVolumeCapacityFull(v) case dn := <-t.chanRecoveredDataNodes: t.RegisterRecoveredDataNode(dn) fmt.Println("DataNode", dn, "is back alive!") case dn := <-t.chanDeadDataNodes: t.UnRegisterDataNode(dn) fmt.Println("DataNode", dn, "is dead!") } } }() } func (t *Topology) SetVolumeCapacityFull(volumeInfo storage.VolumeInfo) bool { vl := t.GetVolumeLayout(volumeInfo.RepType) if !vl.SetVolumeCapacityFull(volumeInfo.Id) { return false } for _, dn := range vl.vid2location[volumeInfo.Id].list { dn.UpAdjustActiveVolumeCountDelta(-1) } return true } func (t *Topology) UnRegisterDataNode(dn *DataNode) { for _, v := range dn.volumes { fmt.Println("Removing Volume", v.Id, "from the dead volume server", dn) vl := t.GetVolumeLayout(v.RepType) vl.SetVolumeUnavailable(dn, v.Id) } dn.UpAdjustVolumeCountDelta(-dn.GetVolumeCount()) dn.UpAdjustActiveVolumeCountDelta(-dn.GetActiveVolumeCount()) dn.UpAdjustMaxVolumeCountDelta(-dn.GetMaxVolumeCount()) dn.Parent().UnlinkChildNode(dn.Id()) } func (t *Topology) RegisterRecoveredDataNode(dn *DataNode) { for _, v := range dn.volumes { vl := t.GetVolumeLayout(v.RepType) if vl.isWritable(&v) { vl.SetVolumeAvailable(dn, v.Id) } } }