Changed RPC methods. Changed Network interface.

* Nodes/Topology removed from public methods from Network interface
* Peers() returns max depth 3 topology
* handler.Topology rpc endpoint removed
* handler.Peers rpc endpoint accept "depth" param to return max depth peers

network/default.go

@@ -809,16 +809,6 @@ func (n *network) Connect() error {
 	return nil
 }
 
-// Nodes returns a list of all network nodes
-func (n *network) Nodes() []Node {
-	return n.node.Nodes()
-}
-
-// Topology returns network topology
-func (n *network) Topology() Node {
-	return n.node.Topology(MaxDepth)
-}
-
 func (n *network) close() error {
 	// stop the server
 	if err := n.server.Stop(); err != nil {

network/handler/handler.go

@@ -15,84 +15,62 @@ type Network struct {
 	Network network.Network
 }
 
-// ListNodes returns a list of all accessible nodes in the network
+// toplogyToProto recursively traverses node topology and returns it
-func (n *Network) ListNodes(ctx context.Context, req *pbNet.ListRequest, resp *pbNet.ListResponse) error {
+func peerTopology(peer network.Node, depth uint) *pbNet.Peer {
-	networkNodes := n.Network.Nodes()
+	node := &pbNet.Node{
-
+		Id:      peer.Id(),
-	var nodes []*pbNet.Node
+		Address: peer.Address(),
-	for _, networkNode := range networkNodes {
-		node := &pbNet.Node{
-			Id:      networkNode.Id(),
-			Address: networkNode.Address(),
-		}
-		nodes = append(nodes, node)
 	}
 
-	resp.Nodes = nodes
+	pbPeers := &pbNet.Peer{
+		Node:  node,
+		Peers: make([]*pbNet.Peer, 0),
+	}
 
-	return nil
+	// return if we reached the end of topology or depth
+	if depth == 0 || len(peer.Peers()) == 0 {
+		return pbPeers
+	}
+
+	// decrement the depth
+	depth--
+
+	// iterate through peers of peers aka pops
+	for _, pop := range peer.Peers() {
+		peer := peerTopology(pop, depth)
+		pbPeers.Peers = append(pbPeers.Peers, peer)
+	}
+
+	return pbPeers
 }
 
 // ListPeers returns a list of all the nodes the node has a direct link with
 func (n *Network) ListPeers(ctx context.Context, req *pbNet.PeerRequest, resp *pbNet.PeerResponse) error {
+	depth := uint(req.Depth)
+	if depth <= 0 || depth > network.MaxDepth {
+		depth = network.MaxDepth
+	}
+
+	// get node peers
 	nodePeers := n.Network.Peers()
 
-	var peers []*pbNet.Node
-	for _, nodePeer := range nodePeers {
-		peer := &pbNet.Node{
-			Id:      nodePeer.Id(),
-			Address: nodePeer.Address(),
-		}
-		peers = append(peers, peer)
-	}
-
-	resp.Peers = peers
-
-	return nil
-}
-
-// toplogyToProto recursively traverses node topology and returns it
-func toplogyToProto(node network.Node, pbPeer *pbNet.Peer) *pbNet.Peer {
-	// return if we reached the end of topology
-	if len(node.Peers()) == 0 {
-		return pbPeer
-	}
-
-	for _, topNode := range node.Peers() {
-		pbNode := &pbNet.Node{
-			Id:      topNode.Id(),
-			Address: topNode.Address(),
-		}
-		pbPeer := &pbNet.Peer{
-			Node:  pbNode,
-			Peers: make([]*pbNet.Peer, 0),
-		}
-		peer := toplogyToProto(topNode, pbPeer)
-		pbPeer.Peers = append(pbPeer.Peers, peer)
-	}
-
-	return pbPeer
-}
-
-// Topology returns a list of nodes in node topology i.e. it returns all (in)directly reachable nodes from this node
-func (n *Network) Topology(ctx context.Context, req *pbNet.TopologyRequest, resp *pbNet.TopologyResponse) error {
-	// get node topology
-	topNode := n.Network.Topology()
-
 	// network node aka root node
 	node := &pbNet.Node{
 		Id:      n.Network.Id(),
 		Address: n.Network.Address(),
 	}
 	// we will build proto topology into this
-	pbPeer := &pbNet.Peer{
+	peers := &pbNet.Peer{
 		Node:  node,
 		Peers: make([]*pbNet.Peer, 0),
 	}
-	// return topology encoded into protobuf
-	topology := toplogyToProto(topNode, pbPeer)
 
-	resp.Topology = topology
+	for _, nodePeer := range nodePeers {
+		peer := peerTopology(nodePeer, depth)
+		peers.Peers = append(peers.Peers, peer)
+	}
+
+	resp.Peers = peers
 
 	return nil
 }

network/network.go

@@ -44,10 +44,6 @@ type Network interface {
 	Name() string
 	// Connect starts the resolver and tunnel server
 	Connect() error
-	// Nodes returns list of network nodes
-	Nodes() []Node
-	// Topology returns node topology up to MaxDepth hops
-	Topology() Node
 	// Close stops the tunnel and resolving
 	Close() error
 	// Client is micro client

network/node.go

@@ -47,11 +47,11 @@ func (n *node) Network() Network {
 // Nodes returns a slice if all nodes in node topology
 func (n *node) Nodes() []Node {
 	// we need to freeze the network graph here
-	// otherwise we might get invalid results
+	// otherwise we might get inconsisten results
 	n.RLock()
 	defer n.RUnlock()
 
-	//track the visited nodes
+	// track the visited nodes
 	visited := make(map[string]*node)
 	// queue of the nodes to visit
 	queue := list.New()
@@ -86,32 +86,8 @@ func (n *node) Nodes() []Node {
 	return nodes
 }
 
-// Peers returns node peers
+// topology returns node topology down to given depth
-func (n *node) Peers() []Node {
+func (n *node) topology(depth uint) *node {
-	var peers []Node
-	n.RLock()
-	for _, peer := range n.peers {
-		// make a copy of the node
-		p := &node{
-			id:      peer.id,
-			address: peer.address,
-			peers:   make(map[string]*node),
-			network: peer.network,
-		}
-		// collect peer's peers aka pop (peer of peer)
-		for id, pop := range peer.peers {
-			p.peers[id] = pop
-		}
-		peers = append(peers, p)
-	}
-	n.RUnlock()
-
-	return peers
-}
-
-// topology returns network topology up to MaxDepth
-func (n *node) Topology(depth uint) *node {
-	n.RLock()
 	// make a copy of yourself
 	node := &node{
 		id:      n.id,
@@ -125,15 +101,31 @@ func (n *node) Topology(depth uint) *node {
 		return node
 	}
 
+	// decrement the depth
 	depth--
 
+	// iterate through our peers and update the node peers
 	for _, peer := range n.peers {
-		nodePeer := peer.Topology(depth)
+		nodePeer := peer.topology(depth)
-		node.peers[nodePeer.id] = nodePeer
+		if _, ok := node.peers[nodePeer.id]; !ok {
+			node.peers[nodePeer.id] = nodePeer
+		}
+	}
+
+	return node
+}
+
+// Peers returns node peers
+func (n *node) Peers() []Node {
+	n.RLock()
+	var peers []Node
+	for _, nodePeer := range n.peers {
+		peer := nodePeer.topology(MaxDepth)
+		peers = append(peers, peer)
 	}
 	n.RUnlock()
 
-	return node
+	return peers
 }
 
 // getProtoTopology returns node topology down to the given depth encoded in protobuf

network/node_test.go

@@ -118,6 +118,22 @@ func TestNodes(t *testing.T) {
 	}
 }
 
+func collectPeerIds(peer Node, ids map[string]bool) map[string]bool {
+	if len(peer.Peers()) == 0 {
+		return ids
+	}
+
+	// iterate through the whole graph
+	for _, peer := range peer.Peers() {
+		ids = collectPeerIds(peer, ids)
+		if _, ok := ids[peer.Id()]; !ok {
+			ids[peer.Id()] = true
+		}
+	}
+
+	return ids
+}
+
 func TestPeers(t *testing.T) {
 	// single node
 	single := &node{
@@ -126,107 +142,44 @@ func TestPeers(t *testing.T) {
 		peers:   make(map[string]*node),
 		network: newNetwork(Name(testNodeNetName)),
 	}
-	// get all the nodes including yourself
+	// get node peers
 	peers := single.Peers()
+	// there should be no peers
 	peerCount := 0
 
 	if len(peers) != peerCount {
-		t.Errorf("Expected to find %d peers, found: %d", peerCount, len(peers))
+		t.Errorf("Expected to find %d nodes, found: %d", peerCount, len(peers))
 	}
 
 	// complicated node graph
 	node := testSetup()
-	// get all the nodes including yourself
+	// list of ids of nodes of MaxDepth
-	peers = node.Peers()
-
-	// compile a list of ids of all nodes in the network into map for easy indexing
 	peerIds := make(map[string]bool)
 	// add peer Ids
 	for _, id := range testNodePeerIds {
 		peerIds[id] = true
 	}
-
-	// we should return the correct number of peers
-	if len(peers) != len(peerIds) {
-		t.Errorf("Expected %d nodes, found: %d", len(peerIds), len(peers))
-	}
-
-	// iterate through the list of peers and makes sure all have been returned
-	for _, peer := range peers {
-		if _, ok := peerIds[peer.Id()]; !ok {
-			t.Errorf("Expected to find %s peer", peer.Id())
-		}
-	}
-}
-
-func collectTopologyIds(peers map[string]*node, ids map[string]bool) map[string]bool {
-	if len(peers) == 0 {
-		return ids
-	}
-
-	// iterate through the whole graph
-	for id, peer := range peers {
-		ids = collectTopologyIds(peer.peers, ids)
-		if _, ok := ids[id]; !ok {
-			ids[id] = true
-		}
-	}
-
-	return ids
-}
-
-func TestTopology(t *testing.T) {
-	// single node
-	single := &node{
-		id:      testNodeId,
-		address: testNodeAddress,
-		peers:   make(map[string]*node),
-		network: newNetwork(Name(testNodeNetName)),
-	}
-	// get all the nodes including yourself
-	topology := single.Topology(MaxDepth)
-	// you should not be in your topology
-	topCount := 0
-
-	if len(topology.peers) != topCount {
-		t.Errorf("Expected to find %d nodes, found: %d", topCount, len(topology.peers))
-	}
-
-	// complicated node graph
-	node := testSetup()
-	// list of ids of nodes of depth 1 i.e. node peers
-	peerIds := make(map[string]bool)
-	// add peer Ids
-	for _, id := range testNodePeerIds {
-		peerIds[id] = true
-	}
-	topology = node.Topology(1)
-
-	// depth 1 should return only immediate peers
-	if len(topology.peers) != len(peerIds) {
-		t.Errorf("Expected to find %d nodes, found: %d", len(peerIds), len(topology.peers))
-	}
-	for id := range topology.peers {
-		if _, ok := peerIds[id]; !ok {
-			t.Errorf("Expected to find %s peer", id)
-		}
-	}
-
 	// add peers of peers to peerIds
 	for _, id := range testPeerOfPeerIds {
 		peerIds[id] = true
 	}
-	topology = node.Topology(2)
+	// get node peers
+	peers = node.Peers()
 
-	topIds := make(map[string]bool)
+	// we will collect all returned Peer Ids into this map
-	topIds = collectTopologyIds(topology.peers, topIds)
+	resPeerIds := make(map[string]bool)
-
+	for _, peer := range peers {
-	if len(topIds) != len(peerIds) {
+		resPeerIds[peer.Id()] = true
-		t.Errorf("Expected to find %d nodes, found: %d", len(peerIds), len(topIds))
+		resPeerIds = collectPeerIds(peer, resPeerIds)
 	}
 
-	for id := range topIds {
+	// if correct, we must collect all peerIds
-		if _, ok := topIds[id]; !ok {
+	if len(resPeerIds) != len(peerIds) {
+		t.Errorf("Expected to find %d peers, found: %d", len(peerIds), len(resPeerIds))
+	}
+
+	for id := range resPeerIds {
+		if _, ok := peerIds[id]; !ok {
 			t.Errorf("Expected to find %s peer", id)
 		}
 	}

network/proto/network.micro.go

@@ -35,9 +35,7 @@ var _ server.Option
 // Client API for Network service
 
 type NetworkService interface {
-	ListNodes(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
 	ListPeers(ctx context.Context, in *PeerRequest, opts ...client.CallOption) (*PeerResponse, error)
-	Topology(ctx context.Context, in *TopologyRequest, opts ...client.CallOption) (*TopologyResponse, error)
 	ListRoutes(ctx context.Context, in *proto1.Request, opts ...client.CallOption) (*proto1.ListResponse, error)
 }
 
@@ -59,16 +57,6 @@ func NewNetworkService(name string, c client.Client) NetworkService {
 	}
 }
 
-func (c *networkService) ListNodes(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error) {
-	req := c.c.NewRequest(c.name, "Network.ListNodes", in)
-	out := new(ListResponse)
-	err := c.c.Call(ctx, req, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
 func (c *networkService) ListPeers(ctx context.Context, in *PeerRequest, opts ...client.CallOption) (*PeerResponse, error) {
 	req := c.c.NewRequest(c.name, "Network.ListPeers", in)
 	out := new(PeerResponse)
@@ -79,16 +67,6 @@ func (c *networkService) ListPeers(ctx context.Context, in *PeerRequest, opts ..
 	return out, nil
 }
 
-func (c *networkService) Topology(ctx context.Context, in *TopologyRequest, opts ...client.CallOption) (*TopologyResponse, error) {
-	req := c.c.NewRequest(c.name, "Network.Topology", in)
-	out := new(TopologyResponse)
-	err := c.c.Call(ctx, req, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
 func (c *networkService) ListRoutes(ctx context.Context, in *proto1.Request, opts ...client.CallOption) (*proto1.ListResponse, error) {
 	req := c.c.NewRequest(c.name, "Network.ListRoutes", in)
 	out := new(proto1.ListResponse)
@@ -102,17 +80,13 @@ func (c *networkService) ListRoutes(ctx context.Context, in *proto1.Request, opt
 // Server API for Network service
 
 type NetworkHandler interface {
-	ListNodes(context.Context, *ListRequest, *ListResponse) error
 	ListPeers(context.Context, *PeerRequest, *PeerResponse) error
-	Topology(context.Context, *TopologyRequest, *TopologyResponse) error
 	ListRoutes(context.Context, *proto1.Request, *proto1.ListResponse) error
 }
 
 func RegisterNetworkHandler(s server.Server, hdlr NetworkHandler, opts ...server.HandlerOption) error {
 	type network interface {
-		ListNodes(ctx context.Context, in *ListRequest, out *ListResponse) error
 		ListPeers(ctx context.Context, in *PeerRequest, out *PeerResponse) error
-		Topology(ctx context.Context, in *TopologyRequest, out *TopologyResponse) error
 		ListRoutes(ctx context.Context, in *proto1.Request, out *proto1.ListResponse) error
 	}
 	type Network struct {
@@ -126,18 +100,10 @@ type networkHandler struct {
 	NetworkHandler
 }
 
-func (h *networkHandler) ListNodes(ctx context.Context, in *ListRequest, out *ListResponse) error {
-	return h.NetworkHandler.ListNodes(ctx, in, out)
-}
-
 func (h *networkHandler) ListPeers(ctx context.Context, in *PeerRequest, out *PeerResponse) error {
 	return h.NetworkHandler.ListPeers(ctx, in, out)
 }
 
-func (h *networkHandler) Topology(ctx context.Context, in *TopologyRequest, out *TopologyResponse) error {
-	return h.NetworkHandler.Topology(ctx, in, out)
-}
-
 func (h *networkHandler) ListRoutes(ctx context.Context, in *proto1.Request, out *proto1.ListResponse) error {
 	return h.NetworkHandler.ListRoutes(ctx, in, out)
 }

network/proto/network.pb.go

@@ -21,83 +21,10 @@ var _ = math.Inf
 // proto package needs to be updated.
 const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
-// Empty request
-type ListRequest struct {
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *ListRequest) Reset()         { *m = ListRequest{} }
-func (m *ListRequest) String() string { return proto.CompactTextString(m) }
-func (*ListRequest) ProtoMessage()    {}
-func (*ListRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{0}
-}
-
-func (m *ListRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_ListRequest.Unmarshal(m, b)
-}
-func (m *ListRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_ListRequest.Marshal(b, m, deterministic)
-}
-func (m *ListRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_ListRequest.Merge(m, src)
-}
-func (m *ListRequest) XXX_Size() int {
-	return xxx_messageInfo_ListRequest.Size(m)
-}
-func (m *ListRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_ListRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_ListRequest proto.InternalMessageInfo
-
-// ListResponse is returned by ListNodes
-type ListResponse struct {
-	// network nodes
-	Nodes                []*Node  `protobuf:"bytes,1,rep,name=nodes,proto3" json:"nodes,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *ListResponse) Reset()         { *m = ListResponse{} }
-func (m *ListResponse) String() string { return proto.CompactTextString(m) }
-func (*ListResponse) ProtoMessage()    {}
-func (*ListResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{1}
-}
-
-func (m *ListResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_ListResponse.Unmarshal(m, b)
-}
-func (m *ListResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_ListResponse.Marshal(b, m, deterministic)
-}
-func (m *ListResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_ListResponse.Merge(m, src)
-}
-func (m *ListResponse) XXX_Size() int {
-	return xxx_messageInfo_ListResponse.Size(m)
-}
-func (m *ListResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_ListResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_ListResponse proto.InternalMessageInfo
-
-func (m *ListResponse) GetNodes() []*Node {
-	if m != nil {
-		return m.Nodes
-	}
-	return nil
-}
-
 // PeerRequest requests list of peers
 type PeerRequest struct {
-	// node id
+	// node topology depth
-	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Depth                uint32   `protobuf:"varint,1,opt,name=depth,proto3" json:"depth,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -107,7 +34,7 @@ func (m *PeerRequest) Reset()         { *m = PeerRequest{} }
 func (m *PeerRequest) String() string { return proto.CompactTextString(m) }
 func (*PeerRequest) ProtoMessage()    {}
 func (*PeerRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{2}
+	return fileDescriptor_8571034d60397816, []int{0}
 }
 
 func (m *PeerRequest) XXX_Unmarshal(b []byte) error {
@@ -128,16 +55,17 @@ func (m *PeerRequest) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_PeerRequest proto.InternalMessageInfo
 
-func (m *PeerRequest) GetId() string {
+func (m *PeerRequest) GetDepth() uint32 {
 	if m != nil {
-		return m.Id
+		return m.Depth
 	}
-	return ""
+	return 0
 }
 
 // PeerResponse is returned by ListPeers
 type PeerResponse struct {
-	Peers                []*Node  `protobuf:"bytes,1,rep,name=peers,proto3" json:"peers,omitempty"`
+	// return peer topology
+	Peers                *Peer    `protobuf:"bytes,1,opt,name=peers,proto3" json:"peers,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -147,7 +75,7 @@ func (m *PeerResponse) Reset()         { *m = PeerResponse{} }
 func (m *PeerResponse) String() string { return proto.CompactTextString(m) }
 func (*PeerResponse) ProtoMessage()    {}
 func (*PeerResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{3}
+	return fileDescriptor_8571034d60397816, []int{1}
 }
 
 func (m *PeerResponse) XXX_Unmarshal(b []byte) error {
@@ -168,94 +96,13 @@ func (m *PeerResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_PeerResponse proto.InternalMessageInfo
 
-func (m *PeerResponse) GetPeers() []*Node {
+func (m *PeerResponse) GetPeers() *Peer {
 	if m != nil {
 		return m.Peers
 	}
 	return nil
 }
 
-// TopologyRequest list node topology
-type TopologyRequest struct {
-	// node id
-	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *TopologyRequest) Reset()         { *m = TopologyRequest{} }
-func (m *TopologyRequest) String() string { return proto.CompactTextString(m) }
-func (*TopologyRequest) ProtoMessage()    {}
-func (*TopologyRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{4}
-}
-
-func (m *TopologyRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_TopologyRequest.Unmarshal(m, b)
-}
-func (m *TopologyRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_TopologyRequest.Marshal(b, m, deterministic)
-}
-func (m *TopologyRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_TopologyRequest.Merge(m, src)
-}
-func (m *TopologyRequest) XXX_Size() int {
-	return xxx_messageInfo_TopologyRequest.Size(m)
-}
-func (m *TopologyRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_TopologyRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_TopologyRequest proto.InternalMessageInfo
-
-func (m *TopologyRequest) GetId() string {
-	if m != nil {
-		return m.Id
-	}
-	return ""
-}
-
-// TopologyResponse is returned by Topology
-type TopologyResponse struct {
-	Topology             *Peer    `protobuf:"bytes,1,opt,name=topology,proto3" json:"topology,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *TopologyResponse) Reset()         { *m = TopologyResponse{} }
-func (m *TopologyResponse) String() string { return proto.CompactTextString(m) }
-func (*TopologyResponse) ProtoMessage()    {}
-func (*TopologyResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{5}
-}
-
-func (m *TopologyResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_TopologyResponse.Unmarshal(m, b)
-}
-func (m *TopologyResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_TopologyResponse.Marshal(b, m, deterministic)
-}
-func (m *TopologyResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_TopologyResponse.Merge(m, src)
-}
-func (m *TopologyResponse) XXX_Size() int {
-	return xxx_messageInfo_TopologyResponse.Size(m)
-}
-func (m *TopologyResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_TopologyResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_TopologyResponse proto.InternalMessageInfo
-
-func (m *TopologyResponse) GetTopology() *Peer {
-	if m != nil {
-		return m.Topology
-	}
-	return nil
-}
-
 // Node is network node
 type Node struct {
 	// node id
@@ -271,7 +118,7 @@ func (m *Node) Reset()         { *m = Node{} }
 func (m *Node) String() string { return proto.CompactTextString(m) }
 func (*Node) ProtoMessage()    {}
 func (*Node) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{6}
+	return fileDescriptor_8571034d60397816, []int{2}
 }
 
 func (m *Node) XXX_Unmarshal(b []byte) error {
@@ -319,7 +166,7 @@ func (m *Connect) Reset()         { *m = Connect{} }
 func (m *Connect) String() string { return proto.CompactTextString(m) }
 func (*Connect) ProtoMessage()    {}
 func (*Connect) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{7}
+	return fileDescriptor_8571034d60397816, []int{3}
 }
 
 func (m *Connect) XXX_Unmarshal(b []byte) error {
@@ -360,7 +207,7 @@ func (m *Close) Reset()         { *m = Close{} }
 func (m *Close) String() string { return proto.CompactTextString(m) }
 func (*Close) ProtoMessage()    {}
 func (*Close) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{8}
+	return fileDescriptor_8571034d60397816, []int{4}
 }
 
 func (m *Close) XXX_Unmarshal(b []byte) error {
@@ -403,7 +250,7 @@ func (m *Peer) Reset()         { *m = Peer{} }
 func (m *Peer) String() string { return proto.CompactTextString(m) }
 func (*Peer) ProtoMessage()    {}
 func (*Peer) Descriptor() ([]byte, []int) {
-	return fileDescriptor_8571034d60397816, []int{9}
+	return fileDescriptor_8571034d60397816, []int{5}
 }
 
 func (m *Peer) XXX_Unmarshal(b []byte) error {
@@ -439,12 +286,8 @@ func (m *Peer) GetPeers() []*Peer {
 }
 
 func init() {
-	proto.RegisterType((*ListRequest)(nil), "go.micro.network.ListRequest")
-	proto.RegisterType((*ListResponse)(nil), "go.micro.network.ListResponse")
 	proto.RegisterType((*PeerRequest)(nil), "go.micro.network.PeerRequest")
 	proto.RegisterType((*PeerResponse)(nil), "go.micro.network.PeerResponse")
-	proto.RegisterType((*TopologyRequest)(nil), "go.micro.network.TopologyRequest")
-	proto.RegisterType((*TopologyResponse)(nil), "go.micro.network.TopologyResponse")
 	proto.RegisterType((*Node)(nil), "go.micro.network.Node")
 	proto.RegisterType((*Connect)(nil), "go.micro.network.Connect")
 	proto.RegisterType((*Close)(nil), "go.micro.network.Close")
@@ -454,29 +297,24 @@ func init() {
 func init() { proto.RegisterFile("network.proto", fileDescriptor_8571034d60397816) }
 
 var fileDescriptor_8571034d60397816 = []byte{
-	// 371 bytes of a gzipped FileDescriptorProto
+	// 292 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x93, 0xc1, 0x4e, 0xc2, 0x40,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x52, 0xcd, 0x4a, 0xc3, 0x40,
-	0x10, 0x86, 0xa1, 0x82, 0xc0, 0x20, 0x4a, 0xf6, 0x60, 0x1a, 0x12, 0x0c, 0xec, 0x89, 0x18, 0x2d,
+	0x10, 0x36, 0x31, 0x31, 0x74, 0x6a, 0x45, 0x16, 0x91, 0x50, 0xa8, 0x94, 0xf5, 0x22, 0xa2, 0x1b,
-	0x06, 0xe2, 0xcd, 0x1b, 0x89, 0x5e, 0x08, 0x31, 0xe8, 0x03, 0x28, 0x74, 0x52, 0x1b, 0xa1, 0x53,
+	0x69, 0xf0, 0xe6, 0xad, 0x07, 0x2f, 0xa5, 0x48, 0x9e, 0x40, 0x9b, 0x1d, 0xd2, 0xa0, 0xcd, 0xc4,
-	0x77, 0x97, 0x18, 0x9f, 0xcf, 0x17, 0x33, 0xbb, 0xdb, 0x52, 0x04, 0xaa, 0xe1, 0xd6, 0x9d, 0xf9,
+	0xdd, 0x0d, 0xbe, 0x8e, 0x8f, 0x2a, 0xd9, 0x4d, 0x2d, 0x28, 0xa1, 0xf4, 0x96, 0xf9, 0xfe, 0x32,
-	0xe7, 0xfb, 0xb7, 0xb3, 0x33, 0xd0, 0x88, 0x50, 0x7d, 0x92, 0x78, 0xf7, 0x62, 0x41, 0x8a, 0x58,
+	0xc3, 0xb7, 0x30, 0xaa, 0xd0, 0x7c, 0x91, 0x7a, 0x17, 0xb5, 0x22, 0x43, 0xec, 0xbc, 0x20, 0xb1,
-	0x33, 0x20, 0x6f, 0x19, 0xce, 0x05, 0x79, 0x49, 0xbc, 0x35, 0x0c, 0x42, 0xf5, 0xb6, 0x9a, 0x79,
+	0x29, 0x73, 0x45, 0xa2, 0xc3, 0xc7, 0x69, 0x51, 0x9a, 0x75, 0xb3, 0x12, 0x39, 0x6d, 0x12, 0xcb,
-	0x73, 0x5a, 0xf6, 0x4d, 0xa6, 0x1f, 0xd0, 0xb5, 0xfd, 0x10, 0xb4, 0x52, 0x28, 0xfa, 0xa6, 0x32,
+	0x24, 0x05, 0xdd, 0xbb, 0x0f, 0x45, 0x8d, 0x41, 0x95, 0x58, 0x67, 0x37, 0xb8, 0x18, 0x7e, 0x0d,
-	0x39, 0x58, 0x0c, 0x6f, 0x40, 0x7d, 0x1c, 0x4a, 0x35, 0xc5, 0x8f, 0x15, 0x4a, 0xc5, 0xef, 0xe0,
+	0xc3, 0x17, 0x44, 0x95, 0xe1, 0x67, 0x83, 0xda, 0xb0, 0x0b, 0x08, 0x25, 0xd6, 0x66, 0x1d, 0x7b,
-	0xc4, 0x1e, 0x65, 0x4c, 0x91, 0x44, 0x76, 0x05, 0xe5, 0x88, 0x7c, 0x94, 0x6e, 0xb1, 0x73, 0xd4,
+	0x53, 0xef, 0x66, 0x94, 0xb9, 0x81, 0x3f, 0xc1, 0xa9, 0x13, 0xe9, 0x9a, 0x2a, 0x8d, 0xec, 0x0e,
-	0xab, 0x0f, 0xce, 0xbd, 0x6d, 0x57, 0x6f, 0x42, 0x3e, 0x4e, 0xad, 0x88, 0xb7, 0xa1, 0xfe, 0x88,
+	0xc2, 0x1a, 0x51, 0x69, 0xab, 0x1a, 0xce, 0x2e, 0xc5, 0xdf, 0x5d, 0x84, 0x95, 0x3b, 0x11, 0x7f,
-	0x28, 0x12, 0x18, 0x3b, 0x05, 0x27, 0xf4, 0xdd, 0x62, 0xa7, 0xd8, 0xab, 0x4d, 0x9d, 0xd0, 0xd7,
+	0x80, 0x60, 0x49, 0x12, 0xd9, 0x19, 0xf8, 0xa5, 0xb4, 0x96, 0x41, 0xe6, 0x97, 0x92, 0xc5, 0x10,
-	0x70, 0x9b, 0xce, 0xe0, 0x31, 0xa2, 0xf8, 0x17, 0x6e, 0x44, 0xbc, 0x0b, 0x67, 0xcf, 0x14, 0xd3,
+	0xbd, 0x49, 0xa9, 0x50, 0xeb, 0xd8, 0xb7, 0xe0, 0x76, 0xe4, 0x8f, 0x10, 0xcd, 0xa9, 0xaa, 0x30,
-	0x82, 0x82, 0xaf, 0x3c, 0x83, 0x7b, 0x68, 0x66, 0x92, 0xc4, 0x64, 0x00, 0x55, 0x95, 0xc4, 0x8c,
+	0x37, 0xec, 0x16, 0x82, 0x8a, 0x24, 0xf6, 0xff, 0xa9, 0x8d, 0xce, 0xac, 0x86, 0xa7, 0x10, 0xce,
-	0x72, 0xaf, 0x8f, 0xb9, 0xd6, 0x5a, 0xc7, 0x6f, 0xa0, 0xa4, 0x9d, 0xb7, 0xf9, 0xcc, 0x85, 0xca,
+	0x3f, 0x48, 0xe3, 0x41, 0xa6, 0x57, 0x08, 0xda, 0x65, 0x0f, 0xf1, 0xec, 0xee, 0xf7, 0xa7, 0xc7,
-	0xab, 0xef, 0x0b, 0x94, 0xd2, 0x75, 0x4c, 0x30, 0x3d, 0xf2, 0x5b, 0xa8, 0x8c, 0x28, 0x8a, 0x70,
+	0x7b, 0xef, 0x9f, 0x7d, 0x7b, 0x10, 0x2d, 0x1d, 0xce, 0x16, 0x30, 0x58, 0x94, 0xda, 0xb4, 0xb4,
-	0xae, 0xd8, 0x25, 0x94, 0x74, 0x37, 0xf2, 0xcd, 0xcc, 0x4f, 0x19, 0x0d, 0x1f, 0x42, 0x79, 0xb4,
+	0x66, 0x93, 0x1e, 0x9f, 0xeb, 0x62, 0x7c, 0xd5, 0x47, 0xbb, 0x16, 0xf8, 0x11, 0x7b, 0x06, 0x68,
-	0x20, 0x89, 0x07, 0x15, 0xbd, 0x40, 0x49, 0xdf, 0xf7, 0x90, 0x9a, 0xac, 0xd5, 0x4e, 0x5e, 0xab,
+	0xd3, 0xb2, 0xb6, 0x50, 0xcd, 0xe2, 0x9d, 0xbe, 0xab, 0x78, 0x9b, 0x34, 0xf9, 0xc7, 0x58, 0xdb,
-	0x4d, 0x0b, 0xac, 0x68, 0xf0, 0xed, 0x40, 0x65, 0x62, 0xe3, 0x6c, 0x0c, 0x35, 0x3d, 0x11, 0x9a,
+	0x6f, 0xd0, 0xea, 0xc4, 0x3e, 0x86, 0xf4, 0x27, 0x00, 0x00, 0xff, 0xff, 0x68, 0x11, 0x14, 0x79,
-	0x25, 0x59, 0x7b, 0xb7, 0x6e, 0x63, 0x7a, 0x5a, 0x17, 0x79, 0x69, 0xfb, 0x16, 0xbc, 0x90, 0xd2,
+	0x64, 0x02, 0x00, 0x00,
-	0xb4, 0xd9, 0x5e, 0xda, 0xc6, 0xf8, 0xec, 0xa3, 0x6d, 0x8e, 0x0f, 0x2f, 0xb0, 0x27, 0xa8, 0xa6,
-	0xef, 0xcd, 0xba, 0xbb, 0xea, 0xad, 0x71, 0x69, 0xf1, 0xbf, 0x24, 0x6b, 0xe8, 0x03, 0x80, 0xb9,
-	0xb4, 0xde, 0x12, 0xc9, 0xdc, 0xac, 0x26, 0xd9, 0x9b, 0x94, 0xd6, 0xde, 0xc9, 0xfc, 0xfe, 0xd7,
-	0xd9, 0xb1, 0xd9, 0xb0, 0xe1, 0x4f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x41, 0x11, 0x04, 0x65, 0xb9,
-	0x03, 0x00, 0x00,
 }

network/proto/network.proto

@@ -6,41 +6,20 @@ import "github.com/micro/go-micro/router/proto/router.proto";
 
 // Network service is usesd to gain visibility into networks
 service Network {
-        rpc ListNodes(ListRequest) returns (ListResponse) {};
         rpc ListPeers(PeerRequest) returns (PeerResponse) {};
-        rpc Topology(TopologyRequest) returns (TopologyResponse) {};
         rpc ListRoutes(go.micro.router.Request) returns (go.micro.router.ListResponse) {};
 }
 
-// Empty request
-message ListRequest {}
-
-// ListResponse is returned by ListNodes
-message ListResponse {
-        // network nodes
-	repeated Node nodes = 1;
-}
-
 // PeerRequest requests list of peers
 message PeerRequest {
-        // node id
+        // node topology depth
-        string id = 1;
+        uint32 depth = 1;
 }
 
 // PeerResponse is returned by ListPeers
 message PeerResponse {
-        repeated Node peers = 1;
+        // return peer topology
-}
+        Peer peers = 1;
-
-// TopologyRequest list node topology
-message TopologyRequest {
-        // node id
-        string id = 1;
-}
-
-// TopologyResponse is returned by Topology
-message TopologyResponse {
-        Peer topology = 1;
 }
 
 // Node is network node