// TestInterfaces tests all registered interfaces with a unified set of tests
// which excersie each of the required methods found within the WalletController
// interface.
//
// NOTE: In the future, when additional implementations of the WalletController
// interface have been implemented, in order to ensure the new concrete
// implementation is automatically tested, two steps must be undertaken. First,
// one needs add a "non-captured" (_) import from the new sub-package. This
// import should trigger an init() method within the package which registeres
// the interface. Second, an additional case in the switch within the main loop
// below needs to be added which properly initializes the interface.
//
// TODO(roasbeef): purge bobNode in favor of dual lnwallet's
func TestLightningWallet(t *testing.T) {
netParams := &chaincfg.SimNetParams
// Initialize the harness around a btcd node which will serve as our
// dedicated miner to generate blocks, cause re-orgs, etc. We'll set
// up this node with a chain length of 125, so we have plentyyy of BTC
// to play around with.
miningNode, err := rpctest.New(netParams, nil, nil)
defer miningNode.TearDown()
if err != nil {
t.Fatalf("unable to create mining node: %v", err)
}
if err := miningNode.SetUp(true, 25); err != nil {
t.Fatalf("unable to set up mining node: %v", err)
}
rpcConfig := miningNode.RPCConfig()
chainNotifier, err := btcdnotify.New(&rpcConfig)
if err != nil {
t.Fatalf("unable to create notifier: %v", err)
}
if err := chainNotifier.Start(); err != nil {
t.Fatalf("unable to start notifier: %v", err)
}
var bio lnwallet.BlockChainIO
var signer lnwallet.Signer
var wc lnwallet.WalletController
for _, walletDriver := range lnwallet.RegisteredWallets() {
tempTestDir, err := ioutil.TempDir("", "lnwallet")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer os.RemoveAll(tempTestDir)
walletType := walletDriver.WalletType
switch walletType {
case "btcwallet":
btcwalletConfig := &btcwallet.Config{
PrivatePass: privPass,
HdSeed: testHdSeed[:],
DataDir: tempTestDir,
NetParams: netParams,
RpcHost: rpcConfig.Host,
RpcUser: rpcConfig.User,
RpcPass: rpcConfig.Pass,
CACert: rpcConfig.Certificates,
}
wc, err = walletDriver.New(btcwalletConfig)
if err != nil {
t.Fatalf("unable to create btcwallet: %v", err)
}
signer = wc.(*btcwallet.BtcWallet)
bio = wc.(*btcwallet.BtcWallet)
default:
t.Fatalf("unknown wallet driver: %v", walletType)
}
// Funding via 20 outputs with 4BTC each.
lnwallet, err := createTestWallet(tempTestDir, miningNode, netParams,
chainNotifier, wc, signer, bio)
if err != nil {
t.Fatalf("unable to create test ln wallet: %v", err)
}
// The wallet should now have 80BTC available for spending.
assertProperBalance(t, lnwallet, 1, 80)
// Execute every test, clearing possibly mutated wallet state after
// each step.
for _, walletTest := range walletTests {
walletTest(miningNode, lnwallet, t)
// TODO(roasbeef): possible reset mining node's chainstate to
// initial level, cleanly wipe buckets
if err := clearWalletState(lnwallet); err != nil &&
err != bolt.ErrBucketNotFound {
t.Fatalf("unable to wipe wallet state: %v", err)
}
}
lnwallet.Shutdown()
}
}
// 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
}