package topology import ( "code.google.com/p/weed-fs/go/glog" "code.google.com/p/weed-fs/go/storage" "strconv" ) type DataNode struct { NodeImpl volumes map[storage.VolumeId]storage.VolumeInfo Ip string Port int PublicUrl string LastSeen int64 // unix time in seconds Dead bool } func NewDataNode(id string) *DataNode { s := &DataNode{} s.id = NodeId(id) s.nodeType = "DataNode" s.volumes = make(map[storage.VolumeId]storage.VolumeInfo) s.NodeImpl.value = s return s } func (dn *DataNode) AddOrUpdateVolume(v storage.VolumeInfo) { if _, ok := dn.volumes[v.Id]; !ok { dn.volumes[v.Id] = v dn.UpAdjustVolumeCountDelta(1) if !v.ReadOnly { dn.UpAdjustActiveVolumeCountDelta(1) } dn.UpAdjustMaxVolumeId(v.Id) } else { dn.volumes[v.Id] = v } } func (dn *DataNode) UpdateVolumes(actualVolumes []storage.VolumeInfo) { actualVolumeMap := make(map[storage.VolumeId]storage.VolumeInfo) for _, v := range actualVolumes { actualVolumeMap[v.Id] = v } for vid, _ := range dn.volumes { if _, ok := actualVolumeMap[vid]; !ok { glog.V(0).Infoln("Deleting volume id:", vid) delete(dn.volumes, vid) dn.UpAdjustVolumeCountDelta(-1) dn.UpAdjustActiveVolumeCountDelta(-1) } } //TODO: adjust max volume id, if need to reclaim volume ids for _, v := range actualVolumes { dn.AddOrUpdateVolume(v) } } func (dn *DataNode) GetDataCenter() *DataCenter { return dn.Parent().Parent().(*NodeImpl).value.(*DataCenter) } func (dn *DataNode) GetTopology() *Topology { p := dn.Parent() for p.Parent() != nil { p = p.Parent() } t := p.(*Topology) return t } func (dn *DataNode) MatchLocation(ip string, port int) bool { return dn.Ip == ip && dn.Port == port } func (dn *DataNode) Url() string { return dn.Ip + ":" + strconv.Itoa(dn.Port) } func (dn *DataNode) ToMap() interface{} { ret := make(map[string]interface{}) ret["Url"] = dn.Url() ret["Volumes"] = dn.GetVolumeCount() ret["Max"] = dn.GetMaxVolumeCount() ret["Free"] = dn.FreeSpace() ret["PublicUrl"] = dn.PublicUrl return ret }