adding topology related types

weed-fs/src/pkg/topology/data_center.go

@@ -1,6 +1,10 @@
 package topology
 
-import (
-
-)
+import ()
 
+type DataCenterId uint32
+type DataCenter struct {
+	Id      DataCenterId
+	racks   map[RackId]*Rack
+	ipRange IpRange
+}

weed-fs/src/pkg/topology/ip_range.go

@@ -0,0 +1,11 @@
+package topology
+
+import (
+
+)
+
+
+type IpRange struct {
+  inclusives   []string
+  exclusives   []string
+}

weed-fs/src/pkg/topology/node.go

@@ -1,9 +1,8 @@
 package topology
 
-import (
-
-)
+import ()
 
+type NodeId uint32
 type VolumeId uint32
 type VolumeInfo struct {
 	Id   VolumeId

weed-fs/src/pkg/topology/rack.go

@@ -1,10 +1,10 @@
 package topology
 
-import (
-
-)
+import ()
 
+type RackId uint32
 type Rack struct {
-  nodes     map[uint64]*Node
-  IpRanges   []string
+	Id      RackId
+	nodes   map[NodeId]*Node
+	ipRange IpRange
 }

weed-fs/src/pkg/topology/topology.go

@@ -0,0 +1,9 @@
+package topology
+
+import (
+
+)
+
+type Topology struct {
+  datacenters     map[DataCenterId]*DataCenter
+}