func main() {
flag.Parse()
go func() {
listenAddr := net.JoinHostPort("", "5009")
profileRedirect := http.RedirectHandler("/debug/pprof",
http.StatusSeeOther)
http.Handle("/", profileRedirect)
fmt.Println(http.ListenAndServe(listenAddr, nil))
}()
// Create, and start the lnwallet, which handles the core payment channel
// logic, and exposes control via proxy state machines.
// TODO(roasbeef): accept config via cli flags, move to real config file
// afterwards
config := &lnwallet.Config{PrivatePass: []byte("hello"), DataDir: *dataDir}
lnwallet, db, err := lnwallet.NewLightningWallet(config)
if err != nil {
fmt.Printf("unable to create wallet: %v\n", err)
os.Exit(1)
}
if err := lnwallet.Startup(); err != nil {
fmt.Printf("unable to start wallet: %v\n", err)
os.Exit(1)
}
lnwallet.Unlock(config.PrivatePass, time.Duration(0))
fmt.Println("wallet open")
defer db.Close()
// Set up the core server which will listen for incoming peer
// connections.
defaultListenAddr := []string{net.JoinHostPort("", *peerPort)}
server, err := newServer(defaultListenAddr, &chaincfg.TestNet3Params,
lnwallet)
if err != nil {
fmt.Printf("unable to create server: %v\n", err)
os.Exit(1)
}
server.Start()
// Initialize, and register our implementation of the gRPC server.
var opts []grpc.ServerOption
grpcServer := grpc.NewServer(opts...)
lnrpc.RegisterLightningServer(grpcServer, server.rpcServer)
// Finally, start the grpc server listening for HTTP/2 connections.
lis, err := net.Listen("tcp", fmt.Sprintf(":%d", *rpcPort))
if err != nil {
grpclog.Fatalf("failed to listen: %v", err)
fmt.Printf("failed to listen: %v", err)
os.Exit(1)
}
grpcServer.Serve(lis)
}
// lndMain is the true entry point for lnd. This function is required since
// defers created in the top-level scope of a main method aren't executed if
// os.Exit() is called.
func lndMain() error {
// Load the configuration, and parse any command line options. This
// function will also set up logging properly.
loadedConfig, err := loadConfig()
if err != nil {
return err
}
cfg = loadedConfig
defer backendLog.Flush()
// Show version at startup.
ltndLog.Infof("Version %s", version())
// Enable http profiling server if requested.
if cfg.Profile != "" {
go func() {
listenAddr := net.JoinHostPort("", cfg.Profile)
profileRedirect := http.RedirectHandler("/debug/pprof",
http.StatusSeeOther)
http.Handle("/", profileRedirect)
fmt.Println(http.ListenAndServe(listenAddr, nil))
}()
}
// Open the channeldb, which is dedicated to storing channel, and
// network related meta-data.
chanDB, err := channeldb.Open(cfg.DataDir, activeNetParams.Params)
if err != nil {
fmt.Println("unable to open channeldb: ", err)
return err
}
defer chanDB.Close()
// Next load btcd's TLS cert for the RPC connection. If a raw cert was
// specified in the config, then we'll se that directly. Otherwise, we
// attempt to read the cert from the path specified in the config.
var rpcCert []byte
if cfg.RawRPCCert != "" {
rpcCert, err = hex.DecodeString(cfg.RawRPCCert)
if err != nil {
return err
}
} else {
certFile, err := os.Open(cfg.RPCCert)
if err != nil {
return err
}
rpcCert, err = ioutil.ReadAll(certFile)
if err != nil {
return err
}
if err := certFile.Close(); err != nil {
return err
}
}
rpcIP, err := net.LookupHost(cfg.RPCHost)
if err != nil {
fmt.Printf("unable to resolve rpc host: %v", err)
return err
}
btcdHost := fmt.Sprintf("%v:%v", cfg.RPCHost, activeNetParams.rpcPort)
btcdUser := cfg.RPCUser
btcdPass := cfg.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
}
// TODO(roasbeef): parse config here select chosen WalletController
walletConfig := &btcwallet.Config{
PrivatePass: []byte("hello"),
DataDir: filepath.Join(cfg.DataDir, "lnwallet"),
RpcHost: fmt.Sprintf("%v:%v", rpcIP[0], activeNetParams.rpcPort),
RpcUser: cfg.RPCUser,
RpcPass: cfg.RPCPass,
CACert: rpcCert,
NetParams: activeNetParams.Params,
}
wc, err := btcwallet.New(walletConfig)
if err != nil {
fmt.Printf("unable to create wallet controller: %v\n", err)
return err
}
signer := wc
bio := wc
// Create, and start the lnwallet, which handles the core payment
// channel logic, and exposes control via proxy state machines.
wallet, err := lnwallet.NewLightningWallet(chanDB, notifier,
wc, signer, bio, activeNetParams.Params)
if err != nil {
fmt.Printf("unable to create wallet: %v\n", err)
return err
}
if err := wallet.Startup(); err != nil {
fmt.Printf("unable to start wallet: %v\n", err)
return err
}
ltndLog.Info("LightningWallet opened")
// Set up the core server which will listen for incoming peer
// connections.
defaultListenAddrs := []string{
net.JoinHostPort("", strconv.Itoa(cfg.PeerPort)),
}
server, err := newServer(defaultListenAddrs, notifier, bio, wallet, chanDB)
if err != nil {
srvrLog.Errorf("unable to create server: %v\n", err)
return err
}
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...")
server.Stop()
server.WaitForShutdown()
})
// Initialize, and register our implementation of the gRPC server.
var opts []grpc.ServerOption
grpcServer := grpc.NewServer(opts...)
lnrpc.RegisterLightningServer(grpcServer, server.rpcServer)
// Next, Start the grpc server listening for HTTP/2 connections.
grpcEndpoint := fmt.Sprintf("localhost:%d", loadedConfig.RPCPort)
lis, err := net.Listen("tcp", grpcEndpoint)
if err != nil {
fmt.Printf("failed to listen: %v", err)
return err
}
go func() {
rpcsLog.Infof("RPC server listening on %s", lis.Addr())
grpcServer.Serve(lis)
}()
// Finally, start the REST proxy for our gRPC server above.
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
mux := proxy.NewServeMux()
swaggerPattern := proxy.MustPattern(proxy.NewPattern(1, []int{2, 0, 2, 1}, []string{"v1", "swagger"}, ""))
// TODO(roasbeef): accept path to swagger file as command-line option
mux.Handle("GET", swaggerPattern, func(w http.ResponseWriter, r *http.Request, p map[string]string) {
http.ServeFile(w, r, "lnrpc/rpc.swagger.json")
})
proxyOpts := []grpc.DialOption{grpc.WithInsecure()}
err = lnrpc.RegisterLightningHandlerFromEndpoint(ctx, mux, grpcEndpoint, proxyOpts)
if err != nil {
return err
}
go func() {
rpcsLog.Infof("gRPC proxy started")
http.ListenAndServe(":8080", mux)
}()
// Wait for shutdown signal from either a graceful server stop or from
// the interrupt handler.
<-shutdownChannel
ltndLog.Info("Shutdown complete")
return nil
}
