func (dht *IpfsDHT) handleAddProvider(ctx context.Context, p peer.ID, pmes *pb.Message) (*pb.Message, error) {
lm := make(lgbl.DeferredMap)
lm["peer"] = func() interface{} { return p.Pretty() }
defer log.EventBegin(ctx, "handleAddProvider", lm).Done()
key := key.Key(pmes.GetKey())
lm["key"] = func() interface{} { return key.Pretty() }
log.Debugf("%s adding %s as a provider for '%s'\n", dht.self, p, key)
// add provider should use the address given in the message
pinfos := pb.PBPeersToPeerInfos(pmes.GetProviderPeers())
for _, pi := range pinfos {
if pi.ID != p {
// we should ignore this provider reccord! not from originator.
// (we chould sign them and check signature later...)
log.Debugf("handleAddProvider received provider %s from %s. Ignore.", pi.ID, p)
continue
}
if len(pi.Addrs) < 1 {
log.Debugf("%s got no valid addresses for provider %s. Ignore.", dht.self, p)
continue
}
log.Infof("received provider %s for %s (addrs: %s)", p, key, pi.Addrs)
if pi.ID != dht.self { // dont add own addrs.
// add the received addresses to our peerstore.
dht.peerstore.AddAddrs(pi.ID, pi.Addrs, peer.ProviderAddrTTL)
}
dht.providers.AddProvider(ctx, key, p)
}
return nil, nil
}
func pingPeer(ctx context.Context, n *core.IpfsNode, pid peer.ID, numPings int) <-chan interface{} {
outChan := make(chan interface{})
go func() {
defer close(outChan)
if len(n.Peerstore.Addrs(pid)) == 0 {
// Make sure we can find the node in question
outChan <- &PingResult{
Text: fmt.Sprintf("Looking up peer %s", pid.Pretty()),
}
ctx, cancel := context.WithTimeout(ctx, kPingTimeout)
defer cancel()
p, err := n.Routing.FindPeer(ctx, pid)
if err != nil {
outChan <- &PingResult{Text: fmt.Sprintf("Peer lookup error: %s", err)}
return
}
n.Peerstore.AddAddrs(p.ID, p.Addrs, peer.TempAddrTTL)
}
outChan <- &PingResult{Text: fmt.Sprintf("PING %s.", pid.Pretty())}
ctx, cancel := context.WithTimeout(ctx, kPingTimeout*time.Duration(numPings))
defer cancel()
pings, err := n.Ping.Ping(ctx, pid)
if err != nil {
log.Debugf("Ping error: %s", err)
outChan <- &PingResult{Text: fmt.Sprintf("Ping error: %s", err)}
return
}
var done bool
var total time.Duration
for i := 0; i < numPings && !done; i++ {
select {
case <-ctx.Done():
done = true
break
case t, ok := <-pings:
if !ok {
done = true
break
}
outChan <- &PingResult{
Success: true,
Time: t,
}
total += t
time.Sleep(time.Second)
}
}
averagems := total.Seconds() * 1000 / float64(numPings)
outChan <- &PingResult{
Text: fmt.Sprintf("Average latency: %.2fms", averagems),
}
}()
return outChan
}
// Dial metadata is metadata for dial events
func Dial(sys string, lid, rid peer.ID, laddr, raddr ma.Multiaddr) DeferredMap {
m := DeferredMap{}
m["subsystem"] = sys
if lid != "" {
m["localPeer"] = func() interface{} { return lid.Pretty() }
}
if laddr != nil {
m["localAddr"] = func() interface{} { return laddr.String() }
}
if rid != "" {
m["remotePeer"] = func() interface{} { return rid.Pretty() }
}
if raddr != nil {
m["remoteAddr"] = func() interface{} { return raddr.String() }
}
return m
}
func (dht *IpfsDHT) handleGetProviders(ctx context.Context, p peer.ID, pmes *pb.Message) (*pb.Message, error) {
lm := make(lgbl.DeferredMap)
lm["peer"] = func() interface{} { return p.Pretty() }
defer log.EventBegin(ctx, "handleGetProviders", lm).Done()
resp := pb.NewMessage(pmes.GetType(), pmes.GetKey(), pmes.GetClusterLevel())
key := key.Key(pmes.GetKey())
lm["key"] = func() interface{} { return key.Pretty() }
// debug logging niceness.
reqDesc := fmt.Sprintf("%s handleGetProviders(%s, %s): ", dht.self, p, key)
log.Debugf("%s begin", reqDesc)
defer log.Debugf("%s end", reqDesc)
// check if we have this value, to add ourselves as provider.
has, err := dht.datastore.Has(key.DsKey())
if err != nil && err != ds.ErrNotFound {
log.Debugf("unexpected datastore error: %v\n", err)
has = false
}
// setup providers
providers := dht.providers.GetProviders(ctx, key)
if has {
providers = append(providers, dht.self)
log.Debugf("%s have the value. added self as provider", reqDesc)
}
if providers != nil && len(providers) > 0 {
infos := peer.PeerInfos(dht.peerstore, providers)
resp.ProviderPeers = pb.PeerInfosToPBPeers(dht.host.Network(), infos)
log.Debugf("%s have %d providers: %s", reqDesc, len(providers), infos)
}
// Also send closer peers.
closer := dht.betterPeersToQuery(pmes, p, CloserPeerCount)
if closer != nil {
infos := peer.PeerInfos(dht.peerstore, closer)
resp.CloserPeers = pb.PeerInfosToPBPeers(dht.host.Network(), infos)
log.Debugf("%s have %d closer peers: %s", reqDesc, len(closer), infos)
}
return resp, nil
}