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 ( CapacityAttr = "Capacity" PriceAttr = "Price" ) 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 } // 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 CapacityAttr: n.Capacity, _ = strconv.ParseUint(attr.Value(), 10, 64) case PriceAttr: 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 } } func (s NodeState) String() string { switch s { default: return "UNSPECIFIED" case NodeStateOffline: return "OFFLINE" case NodeStateOnline: return "ONLINE" } } // NewNodeAttribute creates and returns new NodeAttribute instance. func NewNodeAttribute() *NodeAttribute { return NewNodeAttributeFromV2(new(netmap.Attribute)) } // NodeAttributeFromV2 converts v2 node Attribute to NodeAttribute. func NewNodeAttributeFromV2(a *netmap.Attribute) *NodeAttribute { return (*NodeAttribute)(a) } // ToV2 converts NodeAttribute to v2 node Attribute. 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) } // NewNodeInfo creates and returns new NodeInfo instance. func NewNodeInfo() *NodeInfo { return NewNodeInfoFromV2(new(netmap.NodeInfo)) } // NewNodeInfoFromV2 converts v2 NodeInfo to NodeInfo. func NewNodeInfoFromV2(i *netmap.NodeInfo) *NodeInfo { return (*NodeInfo)(i) } // NodeInfoToJSON encodes NodeInfo to JSON format. func NodeInfoToJSON(i *NodeInfo) ([]byte, error) { return netmap.NodeInfoToJSON(i.ToV2()) } // NodeInfoFromJSON decodes NodeInfo from JSON-encoded data. func NodeInfoFromJSON(data []byte) (*NodeInfo, error) { i, err := netmap.NodeInfoFromJSON(data) if err != nil { return nil, err } return NewNodeInfoFromV2(i), nil } // ToV2 converts NodeInfo to v2 NodeInfo. 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) } // Address returns network endpoint address of the node. func (i *NodeInfo) Address() string { return (*netmap.NodeInfo)(i). GetAddress() } // SetAddress sets network endpoint address of the node. func (i *NodeInfo) SetAddress(addr string) { (*netmap.NodeInfo)(i). SetAddress(addr) } // Attributes returns list of the node attributes. func (i *NodeInfo) Attributes() []*NodeAttribute { as := (*netmap.NodeInfo)(i). GetAttributes() res := make([]*NodeAttribute, 0, len(as)) for i := range as { res = append(res, NewNodeAttributeFromV2(as[i])) } return res } // SetAttributes sets list of the node attributes. func (i *NodeInfo) SetAttributes(as ...*NodeAttribute) { asV2 := make([]*netmap.Attribute, 0, len(as)) for i := range as { asV2 = append(asV2, as[i].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()) }