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Update lastSeen timestamp properly. Set lastSeen when processing advert

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This commit is contained in:
Milos Gajdos 2019-09-04 18:02:13 +01:00
parent 147899283c
commit dd9f42e3b9
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GPG Key ID: 8B31058CC55DFD4F
1 changed files with 32 additions and 8 deletions
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40
network/default.go
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@ -288,6 +288,8 @@ func (n *network) processNetChan(l tunnel.Listener) {
// switch on type of message and take action
switch m.Header["Micro-Method"] {
case "connect":
// mark the time the message has been received
now := time.Now()
pbNetConnect := &pbNet.Connect{}
if err := proto.Unmarshal(m.Body, pbNetConnect); err != nil {
log.Debugf("Network tunnel [%s] connect unmarshal error: %v", NetworkChannel, err)
@ -298,20 +300,28 @@ func (n *network) processNetChan(l tunnel.Listener) {
continue
}
n.Lock()
log.Debugf("Network connect message received from: %s", pbNetConnect.Node.Id)
// if the entry already exists skip adding it
if _, ok := n.neighbours[pbNetConnect.Node.Id]; ok {
if neighbour, ok := n.neighbours[pbNetConnect.Node.Id]; ok {
// update lastSeen timestamp
if n.neighbours[pbNetConnect.Node.Id].lastSeen.Before(now) {
neighbour.lastSeen = now
}
n.Unlock()
continue
}
// add a new neighbour;
// add a new neighbour
// NOTE: new node does not have any neighbours
n.neighbours[pbNetConnect.Node.Id] = &node{
id: pbNetConnect.Node.Id,
address: pbNetConnect.Node.Address,
neighbours: make(map[string]*node),
lastSeen: now,
}
n.Unlock()
case "neighbour":
// mark the time the message has been received
now := time.Now()
pbNetNeighbour := &pbNet.Neighbour{}
if err := proto.Unmarshal(m.Body, pbNetNeighbour); err != nil {
log.Debugf("Network tunnel [%s] neighbour unmarshal error: %v", NetworkChannel, err)
@ -322,15 +332,19 @@ func (n *network) processNetChan(l tunnel.Listener) {
continue
}
n.Lock()
log.Debugf("Network neighbour message received from: %s", pbNetNeighbour.Node.Id)
// only add the neighbour if it's not already in the neighbourhood
if _, ok := n.neighbours[pbNetNeighbour.Node.Id]; !ok {
neighbour := &node{
n.neighbours[pbNetNeighbour.Node.Id] = &node{
id: pbNetNeighbour.Node.Id,
address: pbNetNeighbour.Node.Address,
neighbours: make(map[string]*node),
lastSeen: time.Now(),
lastSeen: now,
}
n.neighbours[pbNetNeighbour.Node.Id] = neighbour
}
// update lastSeen timestamp
if n.neighbours[pbNetNeighbour.Node.Id].lastSeen.Before(now) {
n.neighbours[pbNetNeighbour.Node.Id].lastSeen = now
}
// update/store the neighbour node neighbours
for _, pbNeighbour := range pbNetNeighbour.Neighbours {
@ -430,6 +444,7 @@ func (n *network) pruneNode(id string) error {
return err
}
// delete the found routes
log.Logf("Network deleting routes originated by router: %s", id)
for _, route := range routes {
if err := n.Router.Table().Delete(route); err != nil && err != router.ErrRouteNotFound {
return err
@ -452,8 +467,10 @@ func (n *network) prune() {
case <-prune.C:
n.Lock()
for id, node := range n.neighbours {
nodeAge := time.Since(node.lastSeen)
if nodeAge > PruneTime {
if id == n.options.Id {
continue
}
if time.Since(node.lastSeen) > PruneTime {
log.Debugf("Network deleting node %s: reached prune time threshold", id)
if err := n.pruneNode(id); err != nil {
log.Debugf("Network failed to prune the node %s: %v", id, err)
@ -555,14 +572,19 @@ func (n *network) processCtrlChan(l tunnel.Listener) {
// switch on type of message and take action
switch m.Header["Micro-Method"] {
case "advert":
now := time.Now()
pbRtrAdvert := &pbRtr.Advert{}
if err := proto.Unmarshal(m.Body, pbRtrAdvert); err != nil {
log.Debugf("Network fail to unmarshal advert message: %v", err)
continue
}
// don't process your own messages
if pbRtrAdvert.Id == n.options.Id {
continue
}
// loookup advertising node in our neighbourhood
n.RLock()
log.Debugf("Network received advert message from: %s", pbRtrAdvert.Id)
advertNode, ok := n.neighbours[pbRtrAdvert.Id]
if !ok {
// advertising node has not been registered as our neighbour, yet
@ -570,6 +592,7 @@ func (n *network) processCtrlChan(l tunnel.Listener) {
advertNode = &node{
id: pbRtrAdvert.Id,
neighbours: make(map[string]*node),
lastSeen: now,
}
n.neighbours[pbRtrAdvert.Id] = advertNode
}
@ -785,6 +808,7 @@ func (n *network) Connect() error {
Body: body,
}
log.Debugf("Network sending connect message: %s", node.Id)
if err := netClient.Send(&m); err != nil {
log.Debugf("Network failed to send connect messsage: %v", err)
}