cerc-io/lotus
16
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 27 Wiki Activity

Add offset tracking

Browse Source 
License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>
This commit is contained in:
Jakub Sztandera 2019-12-10 16:58:21 +01:00
parent a53d1031db
commit f528aed598
No known key found for this signature in database
GPG Key ID: 9A9AF56F8B3879BA
1 changed files with 27 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
node/hello/hello.go
View File

@ -31,6 +31,9 @@ type Message struct {
HeaviestTipSet []cid.Cid
HeaviestTipSetWeight types.BigInt
GenesisHash cid.Cid
TArrial int64
TSent int64
}
type NewStreamFunc func(context.Context, peer.ID, ...protocol.ID) (inet.Stream, error)
@ -64,6 +67,8 @@ func (hs *Service) HandleStream(s inet.Stream) {
log.Infow("failed to read hello message", "error", err)
return
}
arrived := time.Now()
log.Debugw("genesis from hello",
"tipset", hmsg.HeaviestTipSet,
"peer", s.Conn().RemotePeer(),
@ -75,7 +80,12 @@ func (hs *Service) HandleStream(s inet.Stream) {
return
}
go func() {
if err := cborutil.WriteCborRPC(s, &Message{}); err != nil {
sent := time.Now()
msg := &Message{
TArrial: arrived.UnixNano(),
TSent: sent.UnixNano(),
}
if err := cborutil.WriteCborRPC(s, msg); err != nil {
log.Debugf("error while responding to latency: %v", err)
}
}()
@ -95,7 +105,6 @@ func (hs *Service) HandleStream(s inet.Stream) {
}
func (hs *Service) SayHello(ctx context.Context, pid peer.ID) error {
start := time.Now()
s, err := hs.newStream(ctx, pid, ProtocolID)
if err != nil {
return err
@ -120,6 +129,7 @@ func (hs *Service) SayHello(ctx context.Context, pid peer.ID) error {
}
log.Info("Sending hello message: ", hts.Cids(), hts.Height(), gen.Cid())
t0 := time.Now()
if err := cborutil.WriteCborRPC(s, hmsg); err != nil {
return err
}
@ -127,12 +137,24 @@ func (hs *Service) SayHello(ctx context.Context, pid peer.ID) error {
go func() {
hmsg = &Message{}
s.SetReadDeadline(time.Now().Add(10 * time.Second))
_ = cborutil.ReadCborRPC(s, hmsg) // ignore error
latency := time.Since(start)
err := cborutil.ReadCborRPC(s, hmsg) // ignore error
ok := err != nil
t3 := time.Now()
lat := t3.Sub(t0)
// add to peer tracker
if hs.pmgr != nil {
hs.pmgr.SetPeerLatency(pid, latency)
hs.pmgr.SetPeerLatency(pid, lat)
}
if ok {
if hmsg.TArrial != 0 && hmsg.TSent != 0 {
t1 := time.Unix(0, hmsg.TArrial)
t2 := time.Unix(0, hmsg.TSent)
offset := t0.Sub(t1) + t3.Sub(t2)
offset /= 2
log.Infow("time offset", "offset", offset.Seconds(), "peerid", pid.String())
}
}
}()