loading from json setup in tests

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

@@ -7,3 +7,9 @@ type DataCenter struct {
 	Node
 	ipRange IpRange
 }
+func NewDataCenter(id NodeId) *DataCenter{
+  dc := &DataCenter{}
+  dc.Node = *NewNode()
+  dc.Node.Id = id
+  return dc
+}

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

@@ -1,12 +1,13 @@
 package topology
 
 import (
+	"fmt"
 	"pkg/storage"
 )
 
 type NodeId string
 type Node struct {
-	id                  NodeId
+	Id                  NodeId
 	countVolumeCount    int
 	reservedVolumeCount int
 	maxVolumeCount      int
@@ -15,6 +16,12 @@ type Node struct {
 	maxVolumeId         storage.VolumeId
 }
 
+func NewNode() *Node {
+	n := &Node{}
+	n.children = make(map[NodeId]*Node)
+	return n
+}
+
 func (n *Node) ReserveOneVolume(r int, vid storage.VolumeId) bool {
 	for _, node := range n.children {
 		freeSpace := node.maxVolumeCount - node.countVolumeCount - node.reservedVolumeCount
@@ -37,6 +44,7 @@ func (n *Node) AddVolume(v *storage.VolumeInfo) {
 		n.maxVolumeId = v.Id
 	}
 	n.countVolumeCount++
+	fmt.Println(n.Id, "adds 1, volumeCount =", n.countVolumeCount)
 	if n.reservedVolumeCount > 0 { //if reserved
 		n.reservedVolumeCount--
 	}
@@ -50,19 +58,19 @@ func (n *Node) GetMaxVolumeId() storage.VolumeId {
 }
 
 func (n *Node) AddNode(node *Node) {
-	n.children[node.id] = node
+	if n.children[node.Id] == nil {
+		n.children[node.Id] = node
 		n.countVolumeCount += node.countVolumeCount
 		n.maxVolumeCount += node.maxVolumeCount
-	if n.parent != nil {
+		fmt.Println(n.Id, "adds", node.Id, "volumeCount =", n.countVolumeCount)
-		n.parent.AddNode(node)
 	}
 }
 
 func (n *Node) RemoveNode(node *Node) {
-	delete(n.children, node.id)
+	if n.children[node.Id] != nil {
+		delete(n.children, node.Id)
 		n.countVolumeCount -= node.countVolumeCount
 		n.maxVolumeCount -= node.maxVolumeCount
-	if n.parent != nil {
+		fmt.Println(n.Id, "removes", node.Id, "volumeCount =", n.countVolumeCount)
-		n.parent.RemoveNode(node)
 	}
 }

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

@@ -7,3 +7,10 @@ type Rack struct {
 	Node
 	ipRange IpRange
 }
+
+func NewRack(id NodeId) *Rack {
+	r := &Rack{}
+	r.Node = *NewNode()
+  r.Node.Id = id
+	return r
+}

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

@@ -2,6 +2,7 @@ package topology
 
 import (
   "pkg/storage"
+  _ "fmt"
 )
 
 type Server struct {
@@ -11,6 +12,12 @@ type Server struct {
 	Port        int
 	PublicUrl   string
 }
+func NewServer(id NodeId) *Server{
+  s := &Server{}
+  s.Node.Id = id
+  s.volumes = make(map[storage.VolumeId]*storage.VolumeInfo)
+  return s
+}
 func (s *Server) CreateOneVolume(r int, vid storage.VolumeId) storage.VolumeId {
   s.AddVolume(&storage.VolumeInfo{Id:vid, Size: 32*1024*1024*1024})
   return vid

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

@@ -1,11 +1,146 @@
 package topology
 
 import (
+	"encoding/json"
+	"fmt"
+	"pkg/storage"
 	"testing"
 )
 
-func TestAddVolume(t *testing.T) {
+var topologyLayout = `
+{
+  "dc1":{
+    "rack1":{
+      "server1":{
+        "volumes":[
+          {"id":1, "size":12312},
+          {"id":2, "size":12312},
+          {"id":3, "size":12312}
+        ],
+        "limit":3
+      },
+      "server2":{
+        "volumes":[
+          {"id":4, "size":12312},
+          {"id":5, "size":12312},
+          {"id":6, "size":12312}
+        ],
+        "limit":10
+      }
+    },
+    "rack2":{
+      "server1":{
+        "volumes":[
+          {"id":4, "size":12312},
+          {"id":5, "size":12312},
+          {"id":6, "size":12312}
+        ],
+        "limit":4
+      },
+      "server2":{
+        "volumes":[],
+        "limit":4
+      },
+      "server3":{
+        "volumes":[
+          {"id":2, "size":12312},
+          {"id":3, "size":12312},
+          {"id":4, "size":12312}
+        ],
+        "limit":2
+      }
+    }
+  },
+  "dc2":{
+  },
+  "dc3":{
+    "rack2":{
+      "server1":{
+        "volumes":[
+          {"id":1, "size":12312},
+          {"id":3, "size":12312},
+          {"id":5, "size":12312}
+        ],
+        "limit":4
+      }
+    }
+  }
+}
+`
 
+func setup() *Topology {
+	var data interface{}
+	err := json.Unmarshal([]byte(topologyLayout), &data)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+	fmt.Println("data:", data)
+	printMap(data)
+
+  //need to connect all nodes first before server adding volumes
+	topo := NewTopology(NodeId("mynetwork"))
+	mTopology := data.(map[string]interface{})
+	for dcKey, dcValue := range mTopology {
+		dc := NewDataCenter(NodeId(dcKey))
+		dc.Node.parent = &topo.Node
+		dcMap := dcValue.(map[string]interface{})
+    topo.Node.AddNode(&dc.Node)
+		for rackKey, rackValue := range dcMap {
+			rack := NewRack(NodeId(rackKey))
+      rack.Node.parent = &dc.Node
+			rackMap := rackValue.(map[string]interface{})
+      dc.Node.AddNode(&rack.Node)
+			for serverKey, serverValue := range rackMap {
+				server := NewServer(NodeId(serverKey))
+        server.Node.parent = &rack.Node
+				serverMap := serverValue.(map[string]interface{})
+        rack.Node.AddNode(&server.Node)
+				for _, v := range serverMap["volumes"].([]interface{}) {
+				  m := v.(map[string]interface{})
+					vi := &storage.VolumeInfo{Id: storage.VolumeId(int64(m["id"].(float64))), Size: int64(m["size"].(float64))}
+					server.AddVolume(vi)
+				}
+			}
+		}
+	}
+
+	fmt.Println("topology:", *topo)
+
+  bytes, err := json.Marshal(topo.Node.children)
+  if err!=nil{
+    fmt.Println("json error:", err)
+  }
+  fmt.Println("json topo:", string(bytes))
+
+	return topo
+}
+
+func printMap(mm interface{}) {
+	m := mm.(map[string]interface{})
+	for k, v := range m {
+		switch vv := v.(type) {
+		case string:
+			fmt.Println(k, "\"", vv, "\"")
+		case int, float64:
+			fmt.Println(k, ":", vv)
+		case []interface{}:
+			fmt.Println(k, ":[")
+			for _, u := range vv {
+				fmt.Println(u)
+				fmt.Println(",")
+			}
+			fmt.Println("]")
+		default:
+			fmt.Println(k, ":")
+			printMap(vv)
+		}
+	}
+}
+
+func TestAddVolume(t *testing.T) {
+	topo := setup()
+	v := &storage.VolumeInfo{}
+	topo.AddVolume(v)
 }
 
 func TestAddServer(t *testing.T) {

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

@@ -8,6 +8,12 @@ import (
 type Topology struct {
   Node
 }
+func NewTopology(id NodeId) *Topology{
+  t := &Topology{}
+  t.Node = *NewNode()
+  t.Node.Id = id
+  return t
+}
 
 func (t *Topology) RandomlyReserveOneVolume() (bool,storage.VolumeId) {
   r := rand.Intn(t.Node.maxVolumeCount-t.Node.countVolumeCount-t.Node.reservedVolumeCount)