[#129] v2: Add unified structure for NodeInfo

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

v2/netmap/types.go

@@ -3,3 +3,95 @@ package netmap
 type PlacementPolicy struct {
 	// TODO: fill me
 }
+
+// Attribute of storage node.
+type Attribute struct {
+	key   string
+	value string
+}
+
+// NodeInfo of storage node.
+type NodeInfo struct {
+	publicKey  []byte
+	address    string
+	attributes []*Attribute
+}
+
+// NodeState of storage node.
+type NodeState uint32
+
+const (
+	Unspecified NodeState = iota
+	Online
+	Offline
+)
+
+func (a *Attribute) GetKey() string {
+	if a != nil {
+		return a.key
+	}
+
+	return ""
+}
+
+func (a *Attribute) SetKey(v string) {
+	if a != nil {
+		a.key = v
+	}
+}
+
+func (a *Attribute) GetValue() string {
+	if a != nil {
+		return a.value
+	}
+
+	return ""
+}
+
+func (a *Attribute) SetValue(v string) {
+	if a != nil {
+		a.value = v
+	}
+}
+
+func (ni *NodeInfo) GetPublicKey() []byte {
+	if ni != nil {
+		return ni.publicKey
+	}
+
+	return nil
+}
+
+func (ni *NodeInfo) SetPublicKey(v []byte) {
+	if ni != nil {
+		ni.publicKey = v
+	}
+}
+
+func (ni *NodeInfo) GetAddress() string {
+	if ni != nil {
+		return ni.address
+	}
+
+	return ""
+}
+
+func (ni *NodeInfo) SetAddress(v string) {
+	if ni != nil {
+		ni.address = v
+	}
+}
+
+func (ni *NodeInfo) GetAttributes() []*Attribute {
+	if ni != nil {
+		return ni.attributes
+	}
+
+	return nil
+}
+
+func (ni *NodeInfo) SetAttributes(v []*Attribute) {
+	if ni != nil {
+		ni.attributes = v
+	}
+}