multi: rename ChannelAnnouncement to ChannelAnnouncment1

In preparation for adding the new ChannelAnnouncement2 message along
with a ChannelAnnouncement interface, we rename the existing message to
ChannelAnnouncement1.

discovery/gossiper.go

@@ -849,9 +849,9 @@ func (d *AuthenticatedGossiper) ProcessRemoteAnnouncement(msg lnwire.Message,
 	// To avoid inserting edges in the graph for our own channels that we
 	// have already closed, we ignore such channel announcements coming
 	// from the remote.
-	case *lnwire.ChannelAnnouncement:
+	case *lnwire.ChannelAnnouncement1:
 		ownKey := d.selfKey.SerializeCompressed()
-		ownErr := fmt.Errorf("ignoring remote ChannelAnnouncement " +
+		ownErr := fmt.Errorf("ignoring remote ChannelAnnouncement1 " +
 			"for own channel")
 
 		if bytes.Equal(m.NodeID1[:], ownKey) ||
@@ -1011,7 +1011,7 @@ func (d *deDupedAnnouncements) addMsg(message networkMsg) {
 	switch msg := message.msg.(type) {
 
 	// Channel announcements are identified by the short channel id field.
-	case *lnwire.ChannelAnnouncement:
+	case *lnwire.ChannelAnnouncement1:
 		deDupKey := msg.ShortChannelID
 		sender := route.NewVertex(message.source)
 
@@ -1585,7 +1585,7 @@ func (d *AuthenticatedGossiper) isRecentlyRejectedMsg(msg lnwire.Message,
 	case *lnwire.ChannelUpdate:
 		scid = m.ShortChannelID.ToUint64()
 
-	case *lnwire.ChannelAnnouncement:
+	case *lnwire.ChannelAnnouncement1:
 		scid = m.ShortChannelID.ToUint64()
 
 	default:
@@ -1844,7 +1844,7 @@ func remotePubFromChanInfo(chanInfo *models.ChannelEdgeInfo,
 // to receive the remote peer's proof, while the remote peer is able to fully
 // assemble the proof and craft the ChannelAnnouncement.
 func (d *AuthenticatedGossiper) processRejectedEdge(
-	chanAnnMsg *lnwire.ChannelAnnouncement,
+	chanAnnMsg *lnwire.ChannelAnnouncement1,
 	proof *models.ChannelAuthProof) ([]networkMsg, error) {
 
 	// First, we'll fetch the state of the channel as we know if from the
@@ -2029,7 +2029,7 @@ func (d *AuthenticatedGossiper) processNetworkAnnouncement(
 	// *creation* of a new channel within the network. This only advertises
 	// the existence of a channel and not yet the routing policies in
 	// either direction of the channel.
-	case *lnwire.ChannelAnnouncement:
+	case *lnwire.ChannelAnnouncement1:
 		return d.handleChanAnnouncement(nMsg, msg, schedulerOp)
 
 	// A new authenticated channel edge update has arrived. This indicates
@@ -2195,7 +2195,7 @@ func (d *AuthenticatedGossiper) isMsgStale(msg lnwire.Message) bool {
 // updateChannel creates a new fully signed update for the channel, and updates
 // the underlying graph with the new state.
 func (d *AuthenticatedGossiper) updateChannel(info *models.ChannelEdgeInfo,
-	edge *models.ChannelEdgePolicy) (*lnwire.ChannelAnnouncement,
+	edge *models.ChannelEdgePolicy) (*lnwire.ChannelAnnouncement1,
 	*lnwire.ChannelUpdate, error) {
 
 	// Parse the unsigned edge into a channel update.
@@ -2234,10 +2234,10 @@ func (d *AuthenticatedGossiper) updateChannel(info *models.ChannelEdgeInfo,
 	// We'll also create the original channel announcement so the two can
 	// be broadcast along side each other (if necessary), but only if we
 	// have a full channel announcement for this channel.
-	var chanAnn *lnwire.ChannelAnnouncement
+	var chanAnn *lnwire.ChannelAnnouncement1
 	if info.AuthProof != nil {
 		chanID := lnwire.NewShortChanIDFromInt(info.ChannelID)
-		chanAnn = &lnwire.ChannelAnnouncement{
+		chanAnn = &lnwire.ChannelAnnouncement1{
 			ShortChannelID:  chanID,
 			NodeID1:         info.NodeKey1Bytes,
 			NodeID2:         info.NodeKey2Bytes,
@@ -2409,18 +2409,18 @@ func (d *AuthenticatedGossiper) handleNodeAnnouncement(nMsg *networkMsg,
 
 // handleChanAnnouncement processes a new channel announcement.
 func (d *AuthenticatedGossiper) handleChanAnnouncement(nMsg *networkMsg,
-	ann *lnwire.ChannelAnnouncement,
+	ann *lnwire.ChannelAnnouncement1,
 	ops []batch.SchedulerOption) ([]networkMsg, bool) {
 
 	scid := ann.ShortChannelID
 
-	log.Debugf("Processing ChannelAnnouncement: peer=%v, short_chan_id=%v",
+	log.Debugf("Processing ChannelAnnouncement1: peer=%v, short_chan_id=%v",
 		nMsg.peer, scid.ToUint64())
 
 	// We'll ignore any channel announcements that target any chain other
 	// than the set of chains we know of.
 	if !bytes.Equal(ann.ChainHash[:], d.cfg.ChainHash[:]) {
-		err := fmt.Errorf("ignoring ChannelAnnouncement from chain=%v"+
+		err := fmt.Errorf("ignoring ChannelAnnouncement1 from chain=%v"+
 			", gossiper on chain=%v", ann.ChainHash,
 			d.cfg.ChainHash)
 		log.Errorf(err.Error())
@@ -2788,7 +2788,7 @@ func (d *AuthenticatedGossiper) handleChanAnnouncement(nMsg *networkMsg,
 
 	nMsg.err <- nil
 
-	log.Debugf("Processed ChannelAnnouncement: peer=%v, short_chan_id=%v",
+	log.Debugf("Processed ChannelAnnouncement1: peer=%v, short_chan_id=%v",
 		nMsg.peer, scid.ToUint64())
 
 	return announcements, true