frostfs-sdk-go/netmap/node_info.go

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package netmap
import (
"strconv"
"github.com/nspcc-dev/hrw"
"github.com/nspcc-dev/neofs-api-go/v2/netmap"
)
type (
// Node is a wrapper over NodeInfo.
Node struct {
ID uint64
Index int
Capacity uint64
Price uint64
AttrMap map[string]string
*NodeInfo
}
// Nodes represents slice of graph leafs.
Nodes []Node
)
// NodeState is an enumeration of various states of the NeoFS node.
type NodeState uint32
// NodeAttribute represents v2 compatible attribute of the NeoFS Storage Node.
type NodeAttribute netmap.Attribute
// NodeInfo represents v2 compatible descriptor of the NeoFS node.
type NodeInfo netmap.NodeInfo
const (
_ NodeState = iota
// NodeStateOffline is network unavailable state.
NodeStateOffline
// NodeStateOnline is an active state in the network.
NodeStateOnline
)
// Enumeration of well-known attributes.
const (
// AttrPrice is a key to the node attribute that indicates the
// price in GAS tokens for storing one GB of data during one Epoch.
AttrPrice = "Price"
// AttrCapacity is a key to the node attribute that indicates the
// total available disk space in Gigabytes.
AttrCapacity = "Capacity"
// AttrSubnet is a key to the node attribute that indicates the
// string ID of node's storage subnet.
AttrSubnet = "Subnet"
// AttrUNLOCODE is a key to the node attribute that indicates the
// node's geographic location in UN/LOCODE format.
AttrUNLOCODE = "UN-LOCODE"
// AttrCountryCode is a key to the node attribute that indicates the
// Country code in ISO 3166-1_alpha-2 format.
AttrCountryCode = "CountryCode"
// AttrCountry is a key to the node attribute that indicates the
// country short name in English, as defined in ISO-3166.
AttrCountry = "Country"
// AttrLocation is a key to the node attribute that indicates the
// place name of the node location.
AttrLocation = "Location"
// AttrSubDivCode is a key to the node attribute that indicates the
// country's administrative subdivision where node is located
// in ISO 3166-2 format.
AttrSubDivCode = "SubDivCode"
// AttrSubDiv is a key to the node attribute that indicates the
// country's administrative subdivision name, as defined in
// ISO 3166-2.
AttrSubDiv = "SubDiv"
// AttrContinent is a key to the node attribute that indicates the
// node's continent name according to the Seven-Continent model.
AttrContinent = "Continent"
)
var _ hrw.Hasher = (*Node)(nil)
// Hash is a function from hrw.Hasher interface. It is implemented
// to support weighted hrw therefore sort function sorts nodes
// based on their `N` value.
func (n Node) Hash() uint64 {
return n.ID
}
// Hash is a function from hrw.Hasher interface. It is implemented
// to support weighted hrw sorting of buckets. Each bucket is already sorted by hrw,
// thus giving us needed "randomness".
func (n Nodes) Hash() uint64 {
if len(n) > 0 {
return n[0].Hash()
}
return 0
}
// NodesFromInfo converts slice of NodeInfo to a generic node slice.
func NodesFromInfo(infos []NodeInfo) Nodes {
nodes := make(Nodes, len(infos))
for i := range infos {
nodes[i] = *newNodeV2(i, &infos[i])
}
return nodes
}
func newNodeV2(index int, ni *NodeInfo) *Node {
n := &Node{
ID: hrw.Hash(ni.PublicKey()),
Index: index,
AttrMap: make(map[string]string, len(ni.Attributes())),
NodeInfo: ni,
}
for _, attr := range ni.Attributes() {
switch attr.Key() {
case AttrCapacity:
n.Capacity, _ = strconv.ParseUint(attr.Value(), 10, 64)
case AttrPrice:
n.Price, _ = strconv.ParseUint(attr.Value(), 10, 64)
}
n.AttrMap[attr.Key()] = attr.Value()
}
return n
}
// Weights returns slice of nodes weights W.
func (n Nodes) Weights(wf weightFunc) []float64 {
w := make([]float64, 0, len(n))
for i := range n {
w = append(w, wf(&n[i]))
}
return w
}
// Attribute returns value of attribute k.
func (n *Node) Attribute(k string) string {
return n.AttrMap[k]
}
// GetBucketWeight computes weight for a Bucket.
func GetBucketWeight(ns Nodes, a aggregator, wf weightFunc) float64 {
for i := range ns {
a.Add(wf(&ns[i]))
}
return a.Compute()
}
// NodeStateFromV2 converts v2 NodeState to NodeState.
func NodeStateFromV2(s netmap.NodeState) NodeState {
switch s {
default:
return 0
case netmap.Online:
return NodeStateOnline
case netmap.Offline:
return NodeStateOffline
}
}
// ToV2 converts NodeState to v2 NodeState.
func (s NodeState) ToV2() netmap.NodeState {
switch s {
default:
return netmap.UnspecifiedState
case NodeStateOffline:
return netmap.Offline
case NodeStateOnline:
return netmap.Online
}
}
// String returns string representation of NodeState.
//
// String mapping:
// * NodeStateOnline: ONLINE;
// * NodeStateOffline: OFFLINE;
// * default: UNSPECIFIED.
func (s NodeState) String() string {
return s.ToV2().String()
}
// FromString parses NodeState from a string representation.
// It is a reverse action to String().
//
// Returns true if s was parsed successfully.
func (s *NodeState) FromString(str string) bool {
var g netmap.NodeState
ok := g.FromString(str)
if ok {
*s = NodeStateFromV2(g)
}
return ok
}
// NewNodeAttribute creates and returns new NodeAttribute instance.
//
// Defaults:
// - key: "";
// - value: "";
// - parents: nil.
func NewNodeAttribute() *NodeAttribute {
return NewNodeAttributeFromV2(new(netmap.Attribute))
}
// NodeAttributeFromV2 converts v2 node Attribute to NodeAttribute.
//
// Nil netmap.Attribute converts to nil.
func NewNodeAttributeFromV2(a *netmap.Attribute) *NodeAttribute {
return (*NodeAttribute)(a)
}
// ToV2 converts NodeAttribute to v2 node Attribute.
//
// Nil NodeAttribute converts to nil.
func (a *NodeAttribute) ToV2() *netmap.Attribute {
return (*netmap.Attribute)(a)
}
// Key returns key to the node attribute.
func (a *NodeAttribute) Key() string {
return (*netmap.Attribute)(a).
GetKey()
}
// SetKey sets key to the node attribute.
func (a *NodeAttribute) SetKey(key string) {
(*netmap.Attribute)(a).
SetKey(key)
}
// Value returns value of the node attribute.
func (a *NodeAttribute) Value() string {
return (*netmap.Attribute)(a).
GetValue()
}
// SetValue sets value of the node attribute.
func (a *NodeAttribute) SetValue(val string) {
(*netmap.Attribute)(a).
SetValue(val)
}
// ParentKeys returns list of parent keys.
func (a *NodeAttribute) ParentKeys() []string {
return (*netmap.Attribute)(a).
GetParents()
}
// SetParentKeys sets list of parent keys.
func (a *NodeAttribute) SetParentKeys(keys ...string) {
(*netmap.Attribute)(a).
SetParents(keys)
}
// Marshal marshals NodeAttribute into a protobuf binary form.
func (a *NodeAttribute) Marshal() ([]byte, error) {
return (*netmap.Attribute)(a).StableMarshal(nil)
}
// Unmarshal unmarshals protobuf binary representation of NodeAttribute.
func (a *NodeAttribute) Unmarshal(data []byte) error {
return (*netmap.Attribute)(a).Unmarshal(data)
}
// MarshalJSON encodes NodeAttribute to protobuf JSON format.
func (a *NodeAttribute) MarshalJSON() ([]byte, error) {
return (*netmap.Attribute)(a).MarshalJSON()
}
// UnmarshalJSON decodes NodeAttribute from protobuf JSON format.
func (a *NodeAttribute) UnmarshalJSON(data []byte) error {
return (*netmap.Attribute)(a).UnmarshalJSON(data)
}
// NewNodeInfo creates and returns new NodeInfo instance.
//
// Defaults:
// - publicKey: nil;
// - address: "";
// - attributes nil;
// - state: 0.
func NewNodeInfo() *NodeInfo {
return NewNodeInfoFromV2(new(netmap.NodeInfo))
}
// NewNodeInfoFromV2 converts v2 NodeInfo to NodeInfo.
//
// Nil netmap.NodeInfo converts to nil.
func NewNodeInfoFromV2(i *netmap.NodeInfo) *NodeInfo {
return (*NodeInfo)(i)
}
// ToV2 converts NodeInfo to v2 NodeInfo.
//
// Nil NodeInfo converts to nil.
func (i *NodeInfo) ToV2() *netmap.NodeInfo {
return (*netmap.NodeInfo)(i)
}
// PublicKey returns public key of the node in a binary format.
func (i *NodeInfo) PublicKey() []byte {
return (*netmap.NodeInfo)(i).GetPublicKey()
}
// SetPublicKey sets public key of the node in a binary format.
func (i *NodeInfo) SetPublicKey(key []byte) {
(*netmap.NodeInfo)(i).SetPublicKey(key)
}
// NumberOfAddresses returns number of network addresses of the node.
func (i *NodeInfo) NumberOfAddresses() int {
return (*netmap.NodeInfo)(i).NumberOfAddresses()
}
// IterateAddresses iterates over network addresses of the node.
// Breaks iteration on f's true return.
//
// Handler should not be nil.
func (i *NodeInfo) IterateAddresses(f func(string) bool) {
(*netmap.NodeInfo)(i).IterateAddresses(f)
}
// IterateAllAddresses is a helper function to unconditionally
// iterate over all node addresses.
func IterateAllAddresses(i *NodeInfo, f func(string)) {
i.IterateAddresses(func(addr string) bool {
f(addr)
return false
})
}
// SetAddresses sets list of network addresses of the node.
func (i *NodeInfo) SetAddresses(v ...string) {
(*netmap.NodeInfo)(i).SetAddresses(v...)
}
// Attributes returns list of the node attributes.
func (i *NodeInfo) Attributes() []NodeAttribute {
if i == nil {
return nil
}
as := (*netmap.NodeInfo)(i).GetAttributes()
if as == nil {
return nil
}
res := make([]NodeAttribute, len(as))
for ind := range as {
res[ind] = *NewNodeAttributeFromV2(&as[ind])
}
return res
}
// SetAttributes sets list of the node attributes.
func (i *NodeInfo) SetAttributes(as ...NodeAttribute) {
asV2 := make([]netmap.Attribute, len(as))
for ind := range as {
asV2[ind] = *as[ind].ToV2()
}
(*netmap.NodeInfo)(i).
SetAttributes(asV2)
}
// State returns node state.
func (i *NodeInfo) State() NodeState {
return NodeStateFromV2(
(*netmap.NodeInfo)(i).GetState(),
)
}
// SetState sets node state.
func (i *NodeInfo) SetState(s NodeState) {
(*netmap.NodeInfo)(i).SetState(s.ToV2())
}
// Marshal marshals NodeInfo into a protobuf binary form.
func (i *NodeInfo) Marshal() ([]byte, error) {
return (*netmap.NodeInfo)(i).StableMarshal(nil)
}
// Unmarshal unmarshals protobuf binary representation of NodeInfo.
func (i *NodeInfo) Unmarshal(data []byte) error {
return (*netmap.NodeInfo)(i).Unmarshal(data)
}
// MarshalJSON encodes NodeInfo to protobuf JSON format.
func (i *NodeInfo) MarshalJSON() ([]byte, error) {
return (*netmap.NodeInfo)(i).MarshalJSON()
}
// UnmarshalJSON decodes NodeInfo from protobuf JSON format.
func (i *NodeInfo) UnmarshalJSON(data []byte) error {
return (*netmap.NodeInfo)(i).UnmarshalJSON(data)
}