gossiper+server: define SelfNodeAnnouncement

discovery/gossiper.go

@@ -147,6 +147,12 @@ type Config struct {
 	// notification for when it reconnects.
 	NotifyWhenOffline func(peerPubKey [33]byte) <-chan struct{}
 
+	// SelfNodeAnnouncement is a function that fetches our own current node
+	// announcement, for use when determining whether we should update our
+	// peers about our presence on the network. If the refresh is true, a
+	// new and updated announcement will be returned.
+	SelfNodeAnnouncement func(refresh bool) (lnwire.NodeAnnouncement, error)
+
 	// ProofMatureDelta the number of confirmations which is needed before
 	// exchange the channel announcement proofs.
 	ProofMatureDelta uint32

discovery/gossiper_test.go

@@ -740,6 +740,11 @@ func createTestCtx(startHeight uint32) (*testCtx, func(), error) {
 			c := make(chan struct{})
 			return c
 		},
+		SelfNodeAnnouncement: func(bool) (lnwire.NodeAnnouncement, error) {
+			return lnwire.NodeAnnouncement{
+				Timestamp: testTimestamp,
+			}, nil
+		},
 		Router:               router,
 		TrickleDelay:         trickleDelay,
 		RetransmitTicker:     ticker.NewForce(retransmitDelay),
@@ -1492,6 +1497,7 @@ func TestSignatureAnnouncementRetryAtStartup(t *testing.T) {
 		Broadcast:            ctx.gossiper.cfg.Broadcast,
 		NotifyWhenOnline:     ctx.gossiper.reliableSender.cfg.NotifyWhenOnline,
 		NotifyWhenOffline:    ctx.gossiper.reliableSender.cfg.NotifyWhenOffline,
+		SelfNodeAnnouncement: ctx.gossiper.cfg.SelfNodeAnnouncement,
 		Router:               ctx.gossiper.cfg.Router,
 		TrickleDelay:         trickleDelay,
 		RetransmitTicker:     ticker.NewForce(retransmitDelay),

server.go

@@ -710,13 +710,16 @@ func newServer(listenAddrs []net.Addr, chanDB *channeldb.DB,
 	}
 
 	s.authGossiper = discovery.New(discovery.Config{
-		Router:                  s.chanRouter,
-		Notifier:                s.cc.chainNotifier,
-		ChainHash:               *activeNetParams.GenesisHash,
-		Broadcast:               s.BroadcastMessage,
-		ChanSeries:              chanSeries,
-		NotifyWhenOnline:        s.NotifyWhenOnline,
-		NotifyWhenOffline:       s.NotifyWhenOffline,
+		Router:            s.chanRouter,
+		Notifier:          s.cc.chainNotifier,
+		ChainHash:         *activeNetParams.GenesisHash,
+		Broadcast:         s.BroadcastMessage,
+		ChanSeries:        chanSeries,
+		NotifyWhenOnline:  s.NotifyWhenOnline,
+		NotifyWhenOffline: s.NotifyWhenOffline,
+		SelfNodeAnnouncement: func(refresh bool) (lnwire.NodeAnnouncement, error) {
+			return s.genNodeAnnouncement(refresh)
+		},
 		ProofMatureDelta:        0,
 		TrickleDelay:            time.Millisecond * time.Duration(cfg.TrickleDelay),
 		RetransmitTicker:        ticker.New(time.Minute * 30),