prysm-pulse/shared/p2p/discovery.go
Raul Jordan 61026103c6
Validator Attester Rewrite (#1487)
* initial validator attesthead rewrite based on proposer rewrite

* proceed with fetching committees and tree hashing the canonical head at assigned attester slot

* complete filling the properties of attestation data and all associated root hashes

* add when to attest todo

* finish entire attester client logic

* tests with mocks checked in

* tests passing in client

* stubbed out server implementation

* fixed build due to old property

* regen mocks with new mockgen version

* fixed broken tests

* complete bazel build fix

* address some review comments

* deep proto test

* tests passing after checking for empty committee and crosslink root

* address nishant comments
2019-02-06 10:20:38 -06:00

75 lines
1.9 KiB
Go

package p2p
import (
"context"
"time"
iaddr "github.com/ipfs/go-ipfs-addr"
host "github.com/libp2p/go-libp2p-host"
ps "github.com/libp2p/go-libp2p-peerstore"
mdns "github.com/libp2p/go-libp2p/p2p/discovery"
"github.com/sirupsen/logrus"
"go.opencensus.io/trace"
)
var log = logrus.WithField("prefix", "p2p")
// Discovery interval for multicast DNS querying.
var discoveryInterval = 1 * time.Minute
// mDNSTag is the name of the mDNS service.
var mDNSTag = mdns.ServiceTag
// TODO(287): add other discovery protocols such as DHT, etc.
// startmDNSDiscovery supports discovery via multicast DNS peer discovery.
func startmDNSDiscovery(ctx context.Context, host host.Host) error {
mdnsService, err := mdns.NewMdnsService(ctx, host, discoveryInterval, mDNSTag)
if err != nil {
return err
}
mdnsService.RegisterNotifee(&discovery{ctx, host})
return nil
}
// startDHTDiscovery supports discovery via DHT.
func startDHTDiscovery(ctx context.Context, host host.Host, bootstrapAddr string) error {
ctx, span := trace.StartSpan(ctx, "p2p_startDHTDiscovery")
defer span.End()
addr, err := iaddr.ParseString(bootstrapAddr)
if err != nil {
return err
}
peerinfo, err := ps.InfoFromP2pAddr(addr.Multiaddr())
if err != nil {
return err
}
err = host.Connect(ctx, *peerinfo)
return err
}
// Discovery implements mDNS notifee interface.
type discovery struct {
ctx context.Context
host host.Host
}
// HandlePeerFound registers the peer with the host.
func (d *discovery) HandlePeerFound(pi ps.PeerInfo) {
log.WithFields(logrus.Fields{
"peer addrs": pi.Addrs,
"peer id": pi.ID,
}).Debug("Attempting to connect to a peer")
d.host.Peerstore().AddAddrs(pi.ID, pi.Addrs, ps.PermanentAddrTTL)
if err := d.host.Connect(d.ctx, pi); err != nil {
log.Warnf("Failed to connect to peer: %v", err)
}
log.WithFields(logrus.Fields{
"peers": d.host.Peerstore().Peers(),
}).Debug("Peers are now")
}