mobile/bindings: update API for falafel v0.8.1

lnd.go

@@ -153,10 +153,6 @@ type ListenerWithSignal struct {
 // ListenerCfg is a wrapper around custom listeners that can be passed to lnd
 // when calling its main method.
 type ListenerCfg struct {
-	// WalletUnlocker can be set to the listener to use for the wallet
-	// unlocker. If nil a regular network listener will be created.
-	WalletUnlocker *ListenerWithSignal
-
 	// RPCListener can be set to the listener to use for the RPC server. If
 	// nil a regular network listener will be created.
 	RPCListener *ListenerWithSignal

lnrpc/Dockerfile

@@ -11,7 +11,7 @@ RUN apt-get update && apt-get install -y \
 ARG PROTOC_GEN_VERSION
 ARG GRPC_GATEWAY_VERSION
 
-ENV FALAFEL_VERSION="v0.7.1"
+ENV FALAFEL_VERSION="v0.8.1"
 ENV GOCACHE=/tmp/build/.cache
 ENV GOMODCACHE=/tmp/build/.modcache
 

mobile/bindings.go

@@ -10,6 +10,7 @@ import (
 	flags "github.com/jessevdk/go-flags"
 	"github.com/lightningnetwork/lnd"
 	"github.com/lightningnetwork/lnd/signal"
+	"google.golang.org/grpc"
 )
 
 // Start starts lnd in a new goroutine.
@@ -18,14 +19,12 @@ import (
 // override what is found in the config file. Example:
 //	extraArgs = "--bitcoin.testnet --lnddir=\"/tmp/folder name/\" --profile=5050"
 //
-// The unlockerReady callback is called when the WalletUnlocker service is
-// ready, and rpcReady is called after the wallet has been unlocked and lnd is
-// ready to accept RPC calls.
+// The rpcReady is called lnd is ready to accept RPC calls.
 //
 // NOTE: On mobile platforms the '--lnddir` argument should be set to the
 // current app directory in order to ensure lnd has the permissions needed to
 // write to it.
-func Start(extraArgs string, unlockerReady, rpcReady Callback) {
+func Start(extraArgs string, rpcReady Callback) {
 	// Split the argument string on "--" to get separated command line
 	// arguments.
 	var splitArgs []string
@@ -62,20 +61,16 @@ func Start(extraArgs string, unlockerReady, rpcReady Callback) {
 		return
 	}
 
-	// Set up channels that will be notified when the RPC servers are ready
-	// to accept calls.
+	// Set a channel that will be notified when the RPC server is ready to
+	// accept calls.
 	var (
-		unlockerListening = make(chan struct{})
-		rpcListening      = make(chan struct{})
+		rpcListening = make(chan struct{})
+		quit         = make(chan struct{})
 	)
 
-	// We call the main method with the custom in-memory listeners called
-	// by the mobile APIs, such that the grpc server will use these.
+	// We call the main method with the custom in-memory listener called by
+	// the mobile APIs, such that the grpc server will use it.
 	cfg := lnd.ListenerCfg{
-		WalletUnlocker: &lnd.ListenerWithSignal{
-			Listener: walletUnlockerLis,
-			Ready:    unlockerListening,
-		},
 		RPCListener: &lnd.ListenerWithSignal{
 			Listener: lightningLis,
 			Ready:    rpcListening,
@@ -85,6 +80,8 @@ func Start(extraArgs string, unlockerReady, rpcReady Callback) {
 	// Call the "real" main in a nested manner so the defers will properly
 	// be executed in the case of a graceful shutdown.
 	go func() {
+		defer close(quit)
+
 		if err := lnd.Main(
 			loadedConfig, cfg, shutdownInterceptor,
 		); err != nil {
@@ -98,40 +95,37 @@ func Start(extraArgs string, unlockerReady, rpcReady Callback) {
 		}
 	}()
 
-	// Finally we start two go routines that will call the provided
-	// callbacks when the RPC servers are ready to accept calls.
-	go func() {
-		<-unlockerListening
+	// By default we'll apply the admin auth options, which will include
+	// macaroons.
+	setDefaultDialOption(
+		func() ([]grpc.DialOption, error) {
+			return lnd.AdminAuthOptions(loadedConfig, false)
+		},
+	)
 
-		// We must set the TLS certificates in order to properly
-		// authenticate with the wallet unlocker service.
-		auth, err := lnd.AdminAuthOptions(loadedConfig, true)
-		if err != nil {
-			unlockerReady.OnError(err)
+	// For the WalletUnlocker and StateService, the macaroons might not be
+	// available yet when called, so we use a more restricted set of
+	// options that don't include them.
+	setWalletUnlockerDialOption(
+		func() ([]grpc.DialOption, error) {
+			return lnd.AdminAuthOptions(loadedConfig, true)
+		},
+	)
+	setStateDialOption(
+		func() ([]grpc.DialOption, error) {
+			return lnd.AdminAuthOptions(loadedConfig, true)
+		},
+	)
+
+	// Finally we start a go routine that will call the provided callback
+	// when the RPC server is ready to accept calls.
+	go func() {
+		select {
+		case <-rpcListening:
+		case <-quit:
 			return
 		}
 
-		// Add the auth options to the listener's dial options.
-		addWalletUnlockerLisDialOption(auth...)
-
-		unlockerReady.OnResponse([]byte{})
-	}()
-
-	go func() {
-		<-rpcListening
-
-		// Now that the RPC server is ready, we can get the needed
-		// authentication options, and add them to the global dial
-		// options.
-		auth, err := lnd.AdminAuthOptions(loadedConfig, false)
-		if err != nil {
-			rpcReady.OnError(err)
-			return
-		}
-
-		// Add the auth options to the listener's dial options.
-		addLightningLisDialOption(auth...)
-
 		rpcReady.OnResponse([]byte{})
 	}()
 }