54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
package lp2p
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
"github.com/libp2p/go-libp2p-core/host"
|
|
"github.com/libp2p/go-libp2p-core/peer"
|
|
"github.com/libp2p/go-libp2p/p2p/discovery"
|
|
"go.uber.org/fx"
|
|
|
|
"github.com/filecoin-project/go-lotus/node/modules/helpers"
|
|
)
|
|
|
|
const discoveryConnTimeout = time.Second * 30
|
|
|
|
type discoveryHandler struct {
|
|
ctx context.Context
|
|
host host.Host
|
|
}
|
|
|
|
func (dh *discoveryHandler) HandlePeerFound(p peer.AddrInfo) {
|
|
log.Warnw("discovred peer", "peer", p)
|
|
ctx, cancel := context.WithTimeout(dh.ctx, discoveryConnTimeout)
|
|
defer cancel()
|
|
if err := dh.host.Connect(ctx, p); err != nil {
|
|
log.Warnw("failed to connect to peer found by discovery", "error", err)
|
|
}
|
|
}
|
|
|
|
func DiscoveryHandler(mctx helpers.MetricsCtx, lc fx.Lifecycle, host host.Host) *discoveryHandler {
|
|
return &discoveryHandler{
|
|
ctx: helpers.LifecycleCtx(mctx, lc),
|
|
host: host,
|
|
}
|
|
}
|
|
|
|
func SetupDiscovery(mdns bool, mdnsInterval int) func(helpers.MetricsCtx, fx.Lifecycle, host.Host, *discoveryHandler) error {
|
|
return func(mctx helpers.MetricsCtx, lc fx.Lifecycle, host host.Host, handler *discoveryHandler) error {
|
|
if mdns {
|
|
if mdnsInterval == 0 {
|
|
mdnsInterval = 5
|
|
}
|
|
service, err := discovery.NewMdnsService(helpers.LifecycleCtx(mctx, lc), host, time.Duration(mdnsInterval)*time.Second, discovery.ServiceTag)
|
|
if err != nil {
|
|
log.Errorw("mdns error", "error", err)
|
|
return nil
|
|
}
|
|
service.RegisterNotifee(handler)
|
|
}
|
|
return nil
|
|
}
|
|
}
|