lnd: update server initialization due to ChainNotifier changes

This commit modifies the daemon’s initialization within the `lndMain`
method to create an instance of the current default ChainNotifier
outside of the LightningWallet.

At this point, since there are no other implementations of the
ChainNotifier, the current concrete implementation BtcdNotifier is used
by default. In the future, once other ChainNotifier implementations are
in place, config parsing should be fed into a factory function which
creates the proper ChainNotifier implementation.

Finally, several imports have been updated to reflect the change in
package name.

lnd.go

@@ -14,9 +14,11 @@ import (
 
 	"google.golang.org/grpc"
 
+	"github.com/lightningnetwork/lnd/chainntnfs/btcdnotify"
 	"github.com/lightningnetwork/lnd/channeldb"
 	"github.com/lightningnetwork/lnd/lnrpc"
 	"github.com/lightningnetwork/lnd/lnwallet"
+	"github.com/roasbeef/btcrpcclient"
 )
 
 var (
@@ -94,9 +96,29 @@ func lndMain() error {
 		return err
 	}
 
-	// Create, and start the lnwallet, which handles the core payment channel
-	// logic, and exposes control via proxy state machines.
-	config := &lnwallet.Config{
+	btcdHost := fmt.Sprintf("%v:%v", loadedConfig.RPCHost, activeNetParams.rpcPort)
+	btcdUser := loadedConfig.RPCUser
+	btcdPass := loadedConfig.RPCPass
+
+	// TODO(roasbeef): parse config here and select chosen notifier instead
+	rpcConfig := &btcrpcclient.ConnConfig{
+		Host:                 btcdHost,
+		Endpoint:             "ws",
+		User:                 btcdUser,
+		Pass:                 btcdPass,
+		Certificates:         rpcCert,
+		DisableTLS:           false,
+		DisableConnectOnNew:  true,
+		DisableAutoReconnect: false,
+	}
+	notifier, err := btcdnotify.New(rpcConfig)
+	if err != nil {
+		return err
+	}
+
+	// Create, and start the lnwallet, which handles the core payment
+	// channel logic, and exposes control via proxy state machines.
+	walletConfig := &lnwallet.Config{
 		PrivatePass: []byte("hello"),
 		DataDir:     filepath.Join(loadedConfig.DataDir, "lnwallet"),
 		RpcHost:     fmt.Sprintf("%v:%v", rpcIP[0], activeNetParams.rpcPort),
@@ -105,7 +127,7 @@ func lndMain() error {
 		CACert:      rpcCert,
 		NetParams:   activeNetParams.Params,
 	}
-	wallet, err := lnwallet.NewLightningWallet(config, chanDB)
+	wallet, err := lnwallet.NewLightningWallet(walletConfig, chanDB, notifier)
 	if err != nil {
 		fmt.Printf("unable to create wallet: %v\n", err)
 		return err
@@ -124,12 +146,15 @@ func lndMain() error {
 	defaultListenAddrs := []string{
 		net.JoinHostPort("", strconv.Itoa(loadedConfig.PeerPort)),
 	}
-	server, err := newServer(defaultListenAddrs, wallet, chanDB)
+	server, err := newServer(defaultListenAddrs, notifier, wallet, chanDB)
 	if err != nil {
 		srvrLog.Errorf("unable to create server: %v\n", err)
 		return err
 	}
-	server.Start()
+	if err := server.Start(); err != nil {
+		srvrLog.Errorf("unable to create to start: %v\n", err)
+		return err
+	}
 
 	addInterruptHandler(func() {
 		ltndLog.Infof("Gracefully shutting down the server...")