Major bug overhaul in how we handle network.Nodes and related handler
This commit is contained in:
Milos Gajdos
parent
3ea4490d6c
commit
6eb6d050ed
@ -30,6 +30,7 @@ var (
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// node is network node
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type node struct {
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sync.RWMutex
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// id is node id
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id string
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// address is node address
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@ -60,9 +61,18 @@ func (n *node) Network() Network {
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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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n.RLock()
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for _, neighbourNode := range n.neighbours {
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// make a copy of the node
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n := &node{
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id: neighbourNode.id,
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address: neighbourNode.address,
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network: neighbourNode.network,
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}
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// NOTE: we do not care about neighbour's neighbours
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nodes = append(nodes, n)
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}
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n.RUnlock()
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return nodes
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}
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@ -287,13 +297,19 @@ func (n *network) processNetChan(l tunnel.Listener) {
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if pbNetConnect.Node.Id == n.options.Id {
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continue
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}
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neighbour := &node{
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n.Lock()
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// if the entry already exists skip adding it
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if _, ok := n.neighbours[pbNetConnect.Node.Id]; ok {
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n.Unlock()
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continue
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}
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// add a new neighbour;
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// NOTE: new node does not have any neighbours
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n.neighbours[pbNetConnect.Node.Id] = &node{
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id: pbNetConnect.Node.Id,
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address: pbNetConnect.Node.Address,
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neighbours: make(map[string]*node),
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}
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n.Lock()
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n.neighbours[neighbour.id] = neighbour
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n.Unlock()
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case "neighbour":
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pbNetNeighbour := &pbNet.Neighbour{}
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@ -305,22 +321,24 @@ func (n *network) processNetChan(l tunnel.Listener) {
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if pbNetNeighbour.Node.Id == n.options.Id {
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continue
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}
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n.Lock()
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// only add the neighbour if it's not already in the neighbourhood
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if _, ok := n.neighbours[pbNetNeighbour.Node.Id]; !ok {
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neighbour := &node{
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id: pbNetNeighbour.Node.Id,
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address: pbNetNeighbour.Node.Address,
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neighbours: make(map[string]*node),
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lastSeen: time.Now(),
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}
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n.Lock()
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// we override the existing neighbour map
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n.neighbours[neighbour.id] = neighbour
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// store the neighbouring node and its neighbours
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n.neighbours[pbNetNeighbour.Node.Id] = neighbour
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}
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// update/store the neighbour node neighbours
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for _, pbNeighbour := range pbNetNeighbour.Neighbours {
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neighbourNode := &node{
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id: pbNeighbour.Id,
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address: pbNeighbour.Address,
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}
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n.neighbours[neighbour.id].neighbours[neighbourNode.id] = neighbourNode
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n.neighbours[pbNetNeighbour.Node.Id].neighbours[neighbourNode.id] = neighbourNode
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}
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n.Unlock()
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case "close":
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@ -76,35 +76,35 @@ func (n *Network) Neighbourhood(ctx context.Context, req *pbNet.NeighbourhoodReq
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// find a node with a given id
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i := sort.Search(len(nodes), func(j int) bool { return nodes[j].Id() >= id })
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var neighbours []*pbNet.Neighbour
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var neighbours []*pbNet.Node
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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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// don't return yourself in response
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if nodeNeighbour.Id() == n.Network.Id() {
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if neighbour.Id() == n.Network.Id() {
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continue
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}
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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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pbNeighbour := &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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neighbours = append(neighbours, pbNeighbour)
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}
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}
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resp.Neighbours = neighbours
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// requested neighbourhood node
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node := &pbNet.Node{
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Id: nodes[i].Id(),
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Address: nodes[i].Address(),
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}
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// creaate neighbourhood answer
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neighbourhood := &pbNet.Neighbour{
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Node: node,
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Neighbours: neighbours,
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}
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resp.Neighbourhood = neighbourhood
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return nil
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}
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@ -135,7 +135,7 @@ 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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Neighbours []*Neighbour `protobuf:"bytes,1,rep,name=neighbours,proto3" json:"neighbours,omitempty"`
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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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@ -166,9 +166,9 @@ func (m *NeighbourhoodResponse) XXX_DiscardUnknown() {
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var xxx_messageInfo_NeighbourhoodResponse proto.InternalMessageInfo
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func (m *NeighbourhoodResponse) GetNeighbours() []*Neighbour {
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func (m *NeighbourhoodResponse) GetNeighbourhood() *Neighbour {
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if m != nil {
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return m.Neighbours
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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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@ -369,27 +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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// 344 bytes of a gzipped FileDescriptorProto
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// 348 bytes of a gzipped FileDescriptorProto
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}
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@ -26,7 +26,7 @@ message NeighbourhoodRequest {
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// NeighbourhoodResponse contains node neighbourhood hierarchy
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message NeighbourhoodResponse {
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repeated Neighbour neighbours = 1;
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Neighbour neighbourhood = 1;
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}
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// Node is network node
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