package topology import () type DataCenter struct { NodeImpl ipRange *IpRange } func NewDataCenter(id string) *DataCenter { dc := &DataCenter{} dc.id = NodeId(id) dc.nodeType = "DataCenter" dc.children = make(map[NodeId]Node) return dc } func (dc *DataCenter) MatchLocationRange(ip string) bool { if dc.ipRange == nil { return true } return dc.ipRange.Match(ip) } func (dc *DataCenter) GetOrCreateRack(ip string) *Rack { for _, c := range dc.Children() { rack := c.(*Rack) if rack.MatchLocationRange(ip) { return rack } } rack := NewRack("DefaultRack") dc.LinkChildNode(rack) return rack }