Implementation of Nodes method. First take on full handler
This commit is contained in:
Milos Gajdos
parent
4f5a849211
commit
86665454e7
@ -54,6 +54,16 @@ func (n *node) Network() Network {
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return n.network
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}
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// Neighbourhood returns node neighbourhood
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func (n *node) Neighbourhood() []Node {
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var nodes []Node
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for _, node := range n.neighbours {
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nodes = append(nodes, node)
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}
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return nodes
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}
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// network implements Network interface
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type network struct {
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// node is network node
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@ -721,8 +731,43 @@ func (n *network) Connect() error {
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}
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// Nodes returns a list of all network nodes
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// NOTE: this is a naive i.e. inefficient BFS implementation
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func (n *network) Nodes() []Node {
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return nil
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// map to track visited nodes
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visited := make(map[string]*node)
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// queue of the nodes to visit
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queue := make([]*node, 1)
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queue[0] = n.node
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// add the root node to the map of the visited nodes
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visited[n.node.id] = n.node
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for {
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// pop a node from the queue
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qnode := queue[0]
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// pop is done by reslicing of the queue
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// https://github.com/golang/go/wiki/SliceTricks
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queue = queue[1:]
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// iterate through all of its neighbours
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// mark the visited nodes; enqueue the non-visted
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for id, node := range qnode.neighbours {
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if _, ok := visited[id]; !ok {
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visited[id] = node
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queue = append(queue, node)
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}
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}
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// if no nodes are in the queue break
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if len(queue) == 0 {
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break
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}
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}
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nodes := make([]Node, 0)
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// collecte all the nodes into slice
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for _, node := range visited {
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nodes = append(nodes, node)
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}
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return nodes
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}
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func (n *network) close() error {
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@ -2,6 +2,7 @@ package handler
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import (
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"context"
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"sort"
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"github.com/micro/go-micro/errors"
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"github.com/micro/go-micro/network"
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@ -42,10 +43,61 @@ func (n *Network) ListRoutes(ctx context.Context, req *pbRtr.Request, resp *pbRt
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// ListNodes returns a list of all accessible nodes in the network
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func (n *Network) ListNodes(ctx context.Context, req *pbNet.ListRequest, resp *pbNet.ListResponse) error {
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nodes := n.Network.Nodes()
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var respNodes []*pbNet.Node
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for _, node := range nodes {
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respNode := &pbNet.Node{
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Id: node.Id(),
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Address: node.Address(),
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}
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respNodes = append(respNodes, respNode)
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}
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resp.Nodes = respNodes
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return nil
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}
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// ListNeighbours returns a list of immediate neighbours
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func (n *Network) ListNeighbours(ctx context.Context, req *pbNet.NeighbourhoodRequest, resp *pbNet.NeighbourhoodResponse) error {
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// Neighbourhood returns a list of immediate neighbours
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func (n *Network) Neighbourhood(ctx context.Context, req *pbNet.NeighbourhoodRequest, resp *pbNet.NeighbourhoodResponse) error {
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// extract the id of the node to query
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id := req.Id
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// if no id is passed, we assume local node
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if id == "" {
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id = n.Network.Id()
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}
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// get all the nodes in the network
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nodes := n.Network.Nodes()
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var neighbours []*pbNet.Neighbour
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// find a node with a given id
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i := sort.Search(len(nodes), func(i int) bool { return nodes[i].Id() == id })
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// collect all the nodes in the neighbourhood of the found node
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if i < len(nodes) && nodes[i].Id() == id {
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for _, neighbour := range nodes[i].Neighbourhood() {
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var nodeNeighbours []*pbNet.Node
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for _, nodeNeighbour := range neighbour.Neighbourhood() {
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nn := &pbNet.Node{
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Id: nodeNeighbour.Id(),
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Address: nodeNeighbour.Address(),
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}
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nodeNeighbours = append(nodeNeighbours, nn)
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}
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// node is present at node[i]
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neighbour := &pbNet.Neighbour{
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Node: &pbNet.Node{
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Id: neighbour.Id(),
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Address: neighbour.Address(),
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},
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Neighbours: nodeNeighbours,
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}
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neighbours = append(neighbours, neighbour)
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}
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}
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resp.Neighbours = neighbours
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return nil
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}
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@ -19,6 +19,18 @@ var (
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AnnounceTime = 30 * time.Second
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)
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// Node is network node
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type Node interface {
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// Id is node id
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Id() string
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// Address is node bind address
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Address() string
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// Neighbourhood is node neighbourhood
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Neighbourhood() []Node
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// Network is the network node is in
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Network() Network
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}
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// Network is micro network
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type Network interface {
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// Node is network node
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@ -39,16 +51,6 @@ type Network interface {
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Server() server.Server
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}
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// Node is network node
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type Node interface {
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// Id is node id
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Id() string
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// Address is node bind address
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Address() string
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// Network is the network node is in
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Network() Network
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}
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// NewNetwork returns a new network interface
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func NewNetwork(opts ...Option) Network {
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return newNetwork(opts...)
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@ -135,10 +135,10 @@ func (m *NeighbourhoodRequest) GetId() string {
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// NeighbourhoodResponse contains node neighbourhood hierarchy
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type NeighbourhoodResponse struct {
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Neighbourhood *Neighbour `protobuf:"bytes,1,opt,name=neighbourhood,proto3" json:"neighbourhood,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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Neighbours []*Neighbour `protobuf:"bytes,1,rep,name=neighbours,proto3" json:"neighbours,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *NeighbourhoodResponse) Reset() { *m = NeighbourhoodResponse{} }
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@ -166,59 +166,9 @@ func (m *NeighbourhoodResponse) XXX_DiscardUnknown() {
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var xxx_messageInfo_NeighbourhoodResponse proto.InternalMessageInfo
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func (m *NeighbourhoodResponse) GetNeighbourhood() *Neighbour {
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func (m *NeighbourhoodResponse) GetNeighbours() []*Neighbour {
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if m != nil {
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return m.Neighbourhood
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}
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return nil
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}
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// Neighbourhood is node neighbourhood
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type Neighbourhood struct {
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// network node
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Node *Node `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
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// node neighbours
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Neighbour []*Neighbour `protobuf:"bytes,2,rep,name=neighbour,proto3" json:"neighbour,omitempty"`
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XXX_NoUnkeyedLiteral struct{} `json:"-"`
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XXX_unrecognized []byte `json:"-"`
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XXX_sizecache int32 `json:"-"`
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}
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func (m *Neighbourhood) Reset() { *m = Neighbourhood{} }
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func (m *Neighbourhood) String() string { return proto.CompactTextString(m) }
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func (*Neighbourhood) ProtoMessage() {}
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func (*Neighbourhood) Descriptor() ([]byte, []int) {
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return fileDescriptor_8571034d60397816, []int{4}
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}
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func (m *Neighbourhood) XXX_Unmarshal(b []byte) error {
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return xxx_messageInfo_Neighbourhood.Unmarshal(m, b)
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}
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func (m *Neighbourhood) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
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return xxx_messageInfo_Neighbourhood.Marshal(b, m, deterministic)
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}
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func (m *Neighbourhood) XXX_Merge(src proto.Message) {
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xxx_messageInfo_Neighbourhood.Merge(m, src)
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}
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func (m *Neighbourhood) XXX_Size() int {
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return xxx_messageInfo_Neighbourhood.Size(m)
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}
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func (m *Neighbourhood) XXX_DiscardUnknown() {
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xxx_messageInfo_Neighbourhood.DiscardUnknown(m)
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}
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var xxx_messageInfo_Neighbourhood proto.InternalMessageInfo
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func (m *Neighbourhood) GetNode() *Node {
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if m != nil {
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return m.Node
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}
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return nil
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}
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func (m *Neighbourhood) GetNeighbour() []*Neighbour {
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if m != nil {
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return m.Neighbour
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return m.Neighbours
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}
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return nil
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}
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@ -238,7 +188,7 @@ func (m *Node) Reset() { *m = Node{} }
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func (m *Node) String() string { return proto.CompactTextString(m) }
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func (*Node) ProtoMessage() {}
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func (*Node) Descriptor() ([]byte, []int) {
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return fileDescriptor_8571034d60397816, []int{5}
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return fileDescriptor_8571034d60397816, []int{4}
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}
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func (m *Node) XXX_Unmarshal(b []byte) error {
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@ -286,7 +236,7 @@ func (m *Connect) Reset() { *m = Connect{} }
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func (m *Connect) String() string { return proto.CompactTextString(m) }
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func (*Connect) ProtoMessage() {}
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func (*Connect) Descriptor() ([]byte, []int) {
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return fileDescriptor_8571034d60397816, []int{6}
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return fileDescriptor_8571034d60397816, []int{5}
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}
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func (m *Connect) XXX_Unmarshal(b []byte) error {
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@ -327,7 +277,7 @@ func (m *Close) Reset() { *m = Close{} }
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func (m *Close) String() string { return proto.CompactTextString(m) }
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func (*Close) ProtoMessage() {}
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func (*Close) Descriptor() ([]byte, []int) {
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return fileDescriptor_8571034d60397816, []int{7}
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return fileDescriptor_8571034d60397816, []int{6}
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}
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func (m *Close) XXX_Unmarshal(b []byte) error {
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@ -370,7 +320,7 @@ func (m *Neighbour) Reset() { *m = Neighbour{} }
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func (m *Neighbour) String() string { return proto.CompactTextString(m) }
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func (*Neighbour) ProtoMessage() {}
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func (*Neighbour) Descriptor() ([]byte, []int) {
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return fileDescriptor_8571034d60397816, []int{8}
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return fileDescriptor_8571034d60397816, []int{7}
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}
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func (m *Neighbour) XXX_Unmarshal(b []byte) error {
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@ -410,7 +360,6 @@ func init() {
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proto.RegisterType((*ListResponse)(nil), "go.micro.network.ListResponse")
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proto.RegisterType((*NeighbourhoodRequest)(nil), "go.micro.network.NeighbourhoodRequest")
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proto.RegisterType((*NeighbourhoodResponse)(nil), "go.micro.network.NeighbourhoodResponse")
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proto.RegisterType((*Neighbourhood)(nil), "go.micro.network.Neighbourhood")
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proto.RegisterType((*Node)(nil), "go.micro.network.Node")
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proto.RegisterType((*Connect)(nil), "go.micro.network.Connect")
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proto.RegisterType((*Close)(nil), "go.micro.network.Close")
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@ -420,28 +369,27 @@ func init() {
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func init() { proto.RegisterFile("network.proto", fileDescriptor_8571034d60397816) }
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var fileDescriptor_8571034d60397816 = []byte{
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|
||||
0x51, 0x4a, 0x3e, 0x33, 0xe4, 0x1a, 0x6a, 0xd9, 0x1b, 0x2c, 0x6d, 0xf7, 0x3b, 0x2d, 0x86, 0x8e,
|
||||
0xa0, 0x3e, 0x7e, 0x47, 0xcd, 0x0f, 0x22, 0x21, 0x34, 0x57, 0x67, 0x1f, 0x42, 0x24, 0x0f, 0x6b,
|
||||
0xff, 0xa4, 0xba, 0xd7, 0x87, 0x12, 0x72, 0xf8, 0xe5, 0x41, 0x63, 0x9a, 0x0f, 0xc9, 0x33, 0x80,
|
||||
0xb5, 0x35, 0x73, 0x5e, 0x13, 0xff, 0x87, 0xed, 0xb2, 0xe0, 0x8c, 0x0a, 0x3a, 0x5b, 0x93, 0x72,
|
||||
0x1a, 0xe8, 0x3f, 0x32, 0x81, 0x66, 0xd6, 0xc9, 0xc4, 0x34, 0xe9, 0x6c, 0x5f, 0x51, 0xca, 0x52,
|
||||
0x70, 0xb9, 0x6b, 0xbc, 0xda, 0x16, 0x43, 0x7b, 0x2d, 0x07, 0xa4, 0xb7, 0xc7, 0xeb, 0x52, 0xa0,
|
||||
0x82, 0xab, 0x3f, 0x71, 0x85, 0x46, 0xfc, 0xdf, 0xe6, 0x7c, 0xf4, 0x1d, 0x00, 0x00, 0xff, 0xff,
|
||||
0x11, 0x41, 0xd2, 0x02, 0x3f, 0x03, 0x00, 0x00,
|
||||
}
|
||||
|
||||
@ -26,15 +26,7 @@ message NeighbourhoodRequest {
|
||||
|
||||
// NeighbourhoodResponse contains node neighbourhood hierarchy
|
||||
message NeighbourhoodResponse {
|
||||
Neighbour neighbourhood = 1;
|
||||
}
|
||||
|
||||
// Neighbourhood is node neighbourhood
|
||||
message Neighbourhood {
|
||||
// network node
|
||||
Node node = 1;
|
||||
// node neighbours
|
||||
repeated Neighbour neighbour = 2;
|
||||
repeated Neighbour neighbours = 1;
|
||||
}
|
||||
|
||||
// Node is network node
|
||||
|
||||
Loading…
Reference in New Issue
Block a user