Merge pull request #722 from milosgajdos83/net-handler

[WIP] Network handler
This commit is contained in:
Asim Aslam 2019-09-02 17:15:38 +01:00 committed by GitHub
commit 90745c14f2
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 350 additions and 52 deletions

View File

@ -33,12 +33,41 @@ type node struct {
id string
// address is node address
address string
// neighbours are node neightbours
// neighbours maps the node neighbourhood
neighbours map[string]*node
// network returns network node is in
network Network
}
// Id is node ide
func (n *node) Id() string {
return n.id
}
// Address returns node address
func (n *node) Address() string {
return n.address
}
// Network returns node network
func (n *node) Network() Network {
return n.network
}
// Neighbourhood returns node neighbourhood
func (n *node) Neighbourhood() []Node {
var nodes []Node
for _, node := range n.neighbours {
nodes = append(nodes, node)
}
return nodes
}
// network implements Network interface
type network struct {
// node is network node
*node
// options configure the network
options Options
// rtr is network router
@ -52,7 +81,7 @@ type network struct {
// client is network client
client client.Client
// tunClient is a mao of tunnel clients keyed over channel names
// tunClient is a map of tunnel clients keyed over tunnel channel names
tunClient map[string]transport.Client
sync.RWMutex
@ -60,8 +89,6 @@ type network struct {
connected bool
// closed closes the network
closed chan bool
// neighbours maps the node neighbourhood
neighbours map[string]*node
}
// newNetwork returns a new network node
@ -106,7 +133,12 @@ func newNetwork(opts ...Option) Network {
),
)
return &network{
network := &network{
node: &node{
id: options.Id,
address: options.Address,
neighbours: make(map[string]*node),
},
options: options,
Router: options.Router,
Proxy: options.Proxy,
@ -114,8 +146,20 @@ func newNetwork(opts ...Option) Network {
server: server,
client: client,
tunClient: make(map[string]transport.Client),
neighbours: make(map[string]*node),
}
network.node.network = network
return network
}
// Options returns network options
func (n *network) Options() Options {
n.Lock()
options := n.options
n.Unlock()
return options
}
// Name returns network name
@ -686,6 +730,46 @@ func (n *network) Connect() error {
return nil
}
// Nodes returns a list of all network nodes
// NOTE: this is a naive i.e. inefficient BFS implementation
func (n *network) Nodes() []Node {
// map to track visited nodes
visited := make(map[string]*node)
// queue of the nodes to visit
queue := make([]*node, 1)
queue[0] = n.node
// add the root node to the map of the visited nodes
visited[n.node.id] = n.node
for {
// pop a node from the queue
qnode := queue[0]
// pop is done by reslicing of the queue
// https://github.com/golang/go/wiki/SliceTricks
queue = queue[1:]
// iterate through all of its neighbours
// mark the visited nodes; enqueue the non-visted
for id, node := range qnode.neighbours {
if _, ok := visited[id]; !ok {
visited[id] = node
queue = append(queue, node)
}
}
// if no nodes are in the queue break
if len(queue) == 0 {
break
}
}
nodes := make([]Node, 0)
// collecte all the nodes into slice
for _, node := range visited {
nodes = append(nodes, node)
}
return nodes
}
func (n *network) close() error {
// stop the server
if err := n.server.Stop(); err != nil {

103
network/handler/handler.go Normal file
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@ -0,0 +1,103 @@
package handler
import (
"context"
"sort"
"github.com/micro/go-micro/errors"
"github.com/micro/go-micro/network"
pbNet "github.com/micro/go-micro/network/proto"
pbRtr "github.com/micro/go-micro/router/proto"
)
// Network implements network handler
type Network struct {
Network network.Network
}
// ListRoutes returns a list of routing table routes
func (n *Network) ListRoutes(ctx context.Context, req *pbRtr.Request, resp *pbRtr.ListResponse) error {
routes, err := n.Network.Options().Router.Table().List()
if err != nil {
return errors.InternalServerError("go.micro.network", "failed to list routes: %s", err)
}
var respRoutes []*pbRtr.Route
for _, route := range routes {
respRoute := &pbRtr.Route{
Service: route.Service,
Address: route.Address,
Gateway: route.Gateway,
Network: route.Network,
Router: route.Router,
Link: route.Link,
Metric: int64(route.Metric),
}
respRoutes = append(respRoutes, respRoute)
}
resp.Routes = respRoutes
return nil
}
// ListNodes returns a list of all accessible nodes in the network
func (n *Network) ListNodes(ctx context.Context, req *pbNet.ListRequest, resp *pbNet.ListResponse) error {
nodes := n.Network.Nodes()
var respNodes []*pbNet.Node
for _, node := range nodes {
respNode := &pbNet.Node{
Id: node.Id(),
Address: node.Address(),
}
respNodes = append(respNodes, respNode)
}
resp.Nodes = respNodes
return nil
}
// Neighbourhood returns a list of immediate neighbours
func (n *Network) Neighbourhood(ctx context.Context, req *pbNet.NeighbourhoodRequest, resp *pbNet.NeighbourhoodResponse) error {
// extract the id of the node to query
id := req.Id
// if no id is passed, we assume local node
if id == "" {
id = n.Network.Id()
}
// get all the nodes in the network
nodes := n.Network.Nodes()
var neighbours []*pbNet.Neighbour
// find a node with a given id
i := sort.Search(len(nodes), func(i int) bool { return nodes[i].Id() == id })
// collect all the nodes in the neighbourhood of the found node
if i < len(nodes) && nodes[i].Id() == id {
for _, neighbour := range nodes[i].Neighbourhood() {
var nodeNeighbours []*pbNet.Node
for _, nodeNeighbour := range neighbour.Neighbourhood() {
nn := &pbNet.Node{
Id: nodeNeighbour.Id(),
Address: nodeNeighbour.Address(),
}
nodeNeighbours = append(nodeNeighbours, nn)
}
// node is present at node[i]
neighbour := &pbNet.Neighbour{
Node: &pbNet.Node{
Id: neighbour.Id(),
Address: neighbour.Address(),
},
Neighbours: nodeNeighbours,
}
neighbours = append(neighbours, neighbour)
}
}
resp.Neighbours = neighbours
return nil
}

View File

@ -19,14 +19,30 @@ var (
AnnounceTime = 30 * time.Second
)
// Node is network node
type Node interface {
// Id is node id
Id() string
// Address is node bind address
Address() string
// Neighbourhood is node neighbourhood
Neighbourhood() []Node
// Network is the network node is in
Network() Network
}
// Network is micro network
type Network interface {
// Node is network node
Node
// Options returns the network options
Options() Options
// Name of the network
Name() string
// Address returns network bind address
Address() string
// Connect starts the resolver and tunnel server
Connect() error
// Nodes returns list of network nodes
Nodes() []Node
// Close stops the tunnel and resolving
Close() error
// Client is micro client

View File

@ -37,7 +37,7 @@ var _ server.Option
type NetworkService interface {
ListRoutes(ctx context.Context, in *proto1.Request, opts ...client.CallOption) (*proto1.ListResponse, error)
ListNodes(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
ListNeighbours(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error)
Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, opts ...client.CallOption) (*NeighbourhoodResponse, error)
}
type networkService struct {
@ -78,9 +78,9 @@ func (c *networkService) ListNodes(ctx context.Context, in *ListRequest, opts ..
return out, nil
}
func (c *networkService) ListNeighbours(ctx context.Context, in *ListRequest, opts ...client.CallOption) (*ListResponse, error) {
req := c.c.NewRequest(c.name, "Network.ListNeighbours", in)
out := new(ListResponse)
func (c *networkService) Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, opts ...client.CallOption) (*NeighbourhoodResponse, error) {
req := c.c.NewRequest(c.name, "Network.Neighbourhood", in)
out := new(NeighbourhoodResponse)
err := c.c.Call(ctx, req, out, opts...)
if err != nil {
return nil, err
@ -93,14 +93,14 @@ func (c *networkService) ListNeighbours(ctx context.Context, in *ListRequest, op
type NetworkHandler interface {
ListRoutes(context.Context, *proto1.Request, *proto1.ListResponse) error
ListNodes(context.Context, *ListRequest, *ListResponse) error
ListNeighbours(context.Context, *ListRequest, *ListResponse) error
Neighbourhood(context.Context, *NeighbourhoodRequest, *NeighbourhoodResponse) error
}
func RegisterNetworkHandler(s server.Server, hdlr NetworkHandler, opts ...server.HandlerOption) error {
type network interface {
ListRoutes(ctx context.Context, in *proto1.Request, out *proto1.ListResponse) error
ListNodes(ctx context.Context, in *ListRequest, out *ListResponse) error
ListNeighbours(ctx context.Context, in *ListRequest, out *ListResponse) error
Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, out *NeighbourhoodResponse) error
}
type Network struct {
network
@ -121,6 +121,6 @@ func (h *networkHandler) ListNodes(ctx context.Context, in *ListRequest, out *Li
return h.NetworkHandler.ListNodes(ctx, in, out)
}
func (h *networkHandler) ListNeighbours(ctx context.Context, in *ListRequest, out *ListResponse) error {
return h.NetworkHandler.ListNeighbours(ctx, in, out)
func (h *networkHandler) Neighbourhood(ctx context.Context, in *NeighbourhoodRequest, out *NeighbourhoodResponse) error {
return h.NetworkHandler.Neighbourhood(ctx, in, out)
}

View File

@ -93,6 +93,86 @@ func (m *ListResponse) GetNodes() []*Node {
return nil
}
// NeighbourhoodRequest is sent to query node neighbourhood
type NeighbourhoodRequest struct {
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 *NeighbourhoodRequest) Reset() { *m = NeighbourhoodRequest{} }
func (m *NeighbourhoodRequest) String() string { return proto.CompactTextString(m) }
func (*NeighbourhoodRequest) ProtoMessage() {}
func (*NeighbourhoodRequest) Descriptor() ([]byte, []int) {
return fileDescriptor_8571034d60397816, []int{2}
}
func (m *NeighbourhoodRequest) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_NeighbourhoodRequest.Unmarshal(m, b)
}
func (m *NeighbourhoodRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_NeighbourhoodRequest.Marshal(b, m, deterministic)
}
func (m *NeighbourhoodRequest) XXX_Merge(src proto.Message) {
xxx_messageInfo_NeighbourhoodRequest.Merge(m, src)
}
func (m *NeighbourhoodRequest) XXX_Size() int {
return xxx_messageInfo_NeighbourhoodRequest.Size(m)
}
func (m *NeighbourhoodRequest) XXX_DiscardUnknown() {
xxx_messageInfo_NeighbourhoodRequest.DiscardUnknown(m)
}
var xxx_messageInfo_NeighbourhoodRequest proto.InternalMessageInfo
func (m *NeighbourhoodRequest) GetId() string {
if m != nil {
return m.Id
}
return ""
}
// NeighbourhoodResponse contains node neighbourhood hierarchy
type NeighbourhoodResponse struct {
Neighbours []*Neighbour `protobuf:"bytes,1,rep,name=neighbours,proto3" json:"neighbours,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *NeighbourhoodResponse) Reset() { *m = NeighbourhoodResponse{} }
func (m *NeighbourhoodResponse) String() string { return proto.CompactTextString(m) }
func (*NeighbourhoodResponse) ProtoMessage() {}
func (*NeighbourhoodResponse) Descriptor() ([]byte, []int) {
return fileDescriptor_8571034d60397816, []int{3}
}
func (m *NeighbourhoodResponse) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_NeighbourhoodResponse.Unmarshal(m, b)
}
func (m *NeighbourhoodResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_NeighbourhoodResponse.Marshal(b, m, deterministic)
}
func (m *NeighbourhoodResponse) XXX_Merge(src proto.Message) {
xxx_messageInfo_NeighbourhoodResponse.Merge(m, src)
}
func (m *NeighbourhoodResponse) XXX_Size() int {
return xxx_messageInfo_NeighbourhoodResponse.Size(m)
}
func (m *NeighbourhoodResponse) XXX_DiscardUnknown() {
xxx_messageInfo_NeighbourhoodResponse.DiscardUnknown(m)
}
var xxx_messageInfo_NeighbourhoodResponse proto.InternalMessageInfo
func (m *NeighbourhoodResponse) GetNeighbours() []*Neighbour {
if m != nil {
return m.Neighbours
}
return nil
}
// Node is network node
type Node struct {
// node ide
@ -108,7 +188,7 @@ 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{2}
return fileDescriptor_8571034d60397816, []int{4}
}
func (m *Node) XXX_Unmarshal(b []byte) error {
@ -156,7 +236,7 @@ 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{3}
return fileDescriptor_8571034d60397816, []int{5}
}
func (m *Connect) XXX_Unmarshal(b []byte) error {
@ -186,7 +266,7 @@ func (m *Connect) GetNode() *Node {
// Close is sent when the node disconnects from the network
type Close struct {
// network mode
// network node
Node *Node `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
@ -197,7 +277,7 @@ 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{4}
return fileDescriptor_8571034d60397816, []int{6}
}
func (m *Close) XXX_Unmarshal(b []byte) error {
@ -227,7 +307,7 @@ func (m *Close) GetNode() *Node {
// Neighbour is used to nnounce node neighbourhood
type Neighbour struct {
// network mode
// network node
Node *Node `protobuf:"bytes,1,opt,name=node,proto3" json:"node,omitempty"`
// neighbours
Neighbours []*Node `protobuf:"bytes,3,rep,name=neighbours,proto3" json:"neighbours,omitempty"`
@ -240,7 +320,7 @@ func (m *Neighbour) Reset() { *m = Neighbour{} }
func (m *Neighbour) String() string { return proto.CompactTextString(m) }
func (*Neighbour) ProtoMessage() {}
func (*Neighbour) Descriptor() ([]byte, []int) {
return fileDescriptor_8571034d60397816, []int{5}
return fileDescriptor_8571034d60397816, []int{7}
}
func (m *Neighbour) XXX_Unmarshal(b []byte) error {
@ -278,6 +358,8 @@ func (m *Neighbour) GetNeighbours() []*Node {
func init() {
proto.RegisterType((*ListRequest)(nil), "go.micro.network.ListRequest")
proto.RegisterType((*ListResponse)(nil), "go.micro.network.ListResponse")
proto.RegisterType((*NeighbourhoodRequest)(nil), "go.micro.network.NeighbourhoodRequest")
proto.RegisterType((*NeighbourhoodResponse)(nil), "go.micro.network.NeighbourhoodResponse")
proto.RegisterType((*Node)(nil), "go.micro.network.Node")
proto.RegisterType((*Connect)(nil), "go.micro.network.Connect")
proto.RegisterType((*Close)(nil), "go.micro.network.Close")
@ -287,24 +369,27 @@ func init() {
func init() { proto.RegisterFile("network.proto", fileDescriptor_8571034d60397816) }
var fileDescriptor_8571034d60397816 = []byte{
// 302 bytes of a gzipped FileDescriptorProto
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}

View File

@ -8,7 +8,7 @@ import "github.com/micro/go-micro/router/proto/router.proto";
service Network {
rpc ListRoutes(go.micro.router.Request) returns (go.micro.router.ListResponse) {};
rpc ListNodes(ListRequest) returns (ListResponse) {};
rpc ListNeighbours(ListRequest) returns (ListResponse) {};
rpc Neighbourhood(NeighbourhoodRequest) returns (NeighbourhoodResponse) {};
}
// Empty request
@ -19,6 +19,16 @@ message ListResponse {
repeated Node nodes = 1;
}
// NeighbourhoodRequest is sent to query node neighbourhood
message NeighbourhoodRequest {
string id = 1;
}
// NeighbourhoodResponse contains node neighbourhood hierarchy
message NeighbourhoodResponse {
repeated Neighbour neighbours = 1;
}
// Node is network node
message Node {
// node ide
@ -35,13 +45,13 @@ message Connect {
// Close is sent when the node disconnects from the network
message Close {
// network mode
// network node
Node node = 1;
}
// Neighbour is used to nnounce node neighbourhood
message Neighbour {
// network mode
// network node
Node node = 1;
// neighbours
repeated Node neighbours = 3;