package topology import () type DataCenter struct { NodeImpl } func NewDataCenter(id string) *DataCenter { dc := &DataCenter{} dc.id = NodeId(id) dc.nodeType = "DataCenter" dc.children = make(map[NodeId]Node) dc.NodeImpl.value = dc return dc } func (dc *DataCenter) GetOrCreateRack(rackName string) *Rack { for _, c := range dc.Children() { rack := c.(*Rack) if string(rack.Id()) == rackName { return rack } } rack := NewRack(rackName) dc.LinkChildNode(rack) return rack } func (dc *DataCenter) ToMap() interface{} { m := make(map[string]interface{}) m["Id"] = dc.Id() m["Max"] = dc.GetMaxVolumeCount() m["Free"] = dc.FreeSpace() var racks []interface{} for _, c := range dc.Children() { rack := c.(*Rack) racks = append(racks, rack.ToMap()) } m["Racks"] = racks return m }