lnd: replace 'routing' with 'discovery' package

Add usage of the 'discovery' package in the lnd, now discovery service
will be handle all lnwire announcement messages and send them to the
remote party.

fundingmanager.go

@@ -141,9 +141,9 @@ type fundingConfig struct {
 	// so that the channel creation process can be completed.
 	Notifier chainntnfs.ChainNotifier
 
-	// SendToRouter is used by the FundingManager to announce newly created
+	// SendToDiscovery is used by the FundingManager to announce newly created
 	// channels to the rest of the Lightning Network.
-	SendToRouter func(msg lnwire.Message)
+	SendToDiscovery func(msg lnwire.Message)
 
 	// SendToPeer allows the FundingManager to send messages to the peer
 	// node during the multiple steps involved in the creation of the
@@ -1107,8 +1107,8 @@ func (f *fundingManager) announceChannel(idKey, remoteIDKey *btcec.PublicKey,
 	chanAnnouncement := newChanAnnouncement(idKey, remoteIDKey, channel, chanID,
 		localProof, remoteProof)
 
-	f.cfg.SendToRouter(chanAnnouncement.chanAnn)
-	f.cfg.SendToRouter(chanAnnouncement.edgeUpdate)
+	f.cfg.SendToDiscovery(chanAnnouncement.chanAnn)
+	f.cfg.SendToDiscovery(chanAnnouncement.edgeUpdate)
 }
 
 // initFundingWorkflow sends a message to the funding manager instructing it

peer.go

@@ -498,7 +498,7 @@ out:
 			*lnwire.ChannelAnnouncement,
 			*lnwire.ChannelUpdateAnnouncement:
 
-			p.server.chanRouter.ProcessRoutingMessage(msg,
+			p.server.discoverSrv.ProcessRemoteAnnouncement(msg,
 				p.addr.IdentityKey)
 		}
 

routing/notifications_test.go

@@ -68,10 +68,10 @@ func createTestNode() (*channeldb.LightningNode, error) {
 
 	return &channeldb.LightningNode{
 		LastUpdate: time.Now(),
-		Address:    testAddr,
+		Addresses:  testAddrs,
 		PubKey:     priv.PubKey(),
 		Alias:      alias.String(),
-		Features:  testFeatures,
+		Features:   testFeatures,
 	}, nil
 }
 

server.go

@@ -14,6 +14,7 @@ import (
 	"github.com/lightningnetwork/lnd/brontide"
 	"github.com/lightningnetwork/lnd/chainntnfs"
 	"github.com/lightningnetwork/lnd/channeldb"
+	"github.com/lightningnetwork/lnd/discovery"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lnwallet"
 	"github.com/lightningnetwork/lnd/lnwire"
@@ -60,6 +61,8 @@ type server struct {
 
 	chanRouter *routing.ChannelRouter
 
+	discoverSrv *discovery.Discovery
+
 	utxoNursery *utxoNursery
 
 	sphinx *sphinx.Router
@@ -179,11 +182,9 @@ func newServer(listenAddrs []string, notifier chainntnfs.ChainNotifier,
 	}
 
 	s.chanRouter, err = routing.New(routing.Config{
-		Graph:        chanGraph,
-		Chain:        bio,
-		Notifier:     notifier,
-		Broadcast:    s.broadcastMessage,
-		SendMessages: s.sendToPeer,
+		Graph:    chanGraph,
+		Chain:    bio,
+		Notifier: notifier,
 		SendToSwitch: func(firstHop *btcec.PublicKey,
 			htlcAdd *lnwire.UpdateAddHTLC) ([32]byte, error) {
 
@@ -200,6 +201,16 @@ func newServer(listenAddrs []string, notifier chainntnfs.ChainNotifier,
 		return nil, err
 	}
 
+	s.discoverSrv, err = discovery.New(discovery.Config{
+		Broadcast:    s.broadcastMessage,
+		Notifier:     s.chainNotifier,
+		Router:       s.chanRouter,
+		SendMessages: s.sendToPeer,
+	})
+	if err != nil {
+		return nil, err
+	}
+
 	s.rpcServer = newRPCServer(s)
 	s.breachArbiter = newBreachArbiter(wallet, chanDB, notifier, s.htlcSwitch)
 
@@ -207,8 +218,8 @@ func newServer(listenAddrs []string, notifier chainntnfs.ChainNotifier,
 		IDKey:    s.identityPriv.PubKey(),
 		Wallet:   wallet,
 		Notifier: s.chainNotifier,
-		SendToRouter: func(msg lnwire.Message) {
-			s.chanRouter.ProcessRoutingMessage(msg,
+		SendToDiscovery: func(msg lnwire.Message) {
+			s.discoverSrv.ProcessLocalAnnouncement(msg,
 				s.identityPriv.PubKey())
 		},
 		ArbiterChan: s.breachArbiter.newContracts,
@@ -385,6 +396,9 @@ func (s *server) Start() error {
 	if err := s.breachArbiter.Start(); err != nil {
 		return err
 	}
+	if err := s.discoverSrv.Start(); err != nil {
+		return err
+	}
 	if err := s.chanRouter.Start(); err != nil {
 		return err
 	}
@@ -412,7 +426,7 @@ func (s *server) Stop() error {
 	s.htlcSwitch.Stop()
 	s.utxoNursery.Stop()
 	s.breachArbiter.Stop()
-
+	s.discoverSrv.Stop()
 	s.lnwallet.Shutdown()
 
 	// Signal all the lingering goroutines to quit.
@@ -643,7 +657,7 @@ func (s *server) addPeer(p *peer) {
 	// Once the peer has been added to our indexes, send a message to the
 	// channel router so we can synchronize our view of the channel graph
 	// with this new peer.
-	go s.chanRouter.SynchronizeNode(p.addr.IdentityKey)
+	go s.discoverSrv.SynchronizeNode(p.addr.IdentityKey)
 }
 
 // removePeer removes the passed peer from the server's state of all active