multi: set invoice feature bits using feature manager

lnrpc/invoicesrpc/addinvoice.go

@@ -47,6 +47,10 @@ type AddInvoiceConfig struct {
 	// ChanDB is a global boltdb instance which is needed to access the
 	// channel graph.
 	ChanDB *channeldb.DB
+
+	// GenInvoiceFeatures returns a feature containing feature bits that
+	// should be advertised on freshly generated invoices.
+	GenInvoiceFeatures func() *lnwire.FeatureVector
 }
 
 // AddInvoiceData contains the required data to create a new invoice.
@@ -363,11 +367,8 @@ func AddInvoice(ctx context.Context, cfg *AddInvoiceConfig,
 
 	}
 
-	// Set a blank feature vector, as our invoice generation forbids nil
-	// features.
-	invoiceFeatures := lnwire.NewFeatureVector(
-		lnwire.NewRawFeatureVector(), lnwire.Features,
-	)
+	// Set our desired invoice features and add them to our list of options.
+	invoiceFeatures := cfg.GenInvoiceFeatures()
 	options = append(options, zpay32.Features(invoiceFeatures))
 
 	// Generate and set a random payment address for this invoice. If the

lnrpc/invoicesrpc/config_active.go

@@ -50,4 +50,8 @@ type Config struct {
 	// ChanDB is a global boltdb instance which is needed to access the
 	// channel graph.
 	ChanDB *channeldb.DB
+
+	// GenInvoiceFeatures returns a feature containing feature bits that
+	// should be advertised on freshly generated invoices.
+	GenInvoiceFeatures func() *lnwire.FeatureVector
 }

lnrpc/invoicesrpc/invoices_server.go

@@ -246,13 +246,14 @@ func (s *Server) AddHoldInvoice(ctx context.Context,
 	invoice *AddHoldInvoiceRequest) (*AddHoldInvoiceResp, error) {
 
 	addInvoiceCfg := &AddInvoiceConfig{
-		AddInvoice:        s.cfg.InvoiceRegistry.AddInvoice,
-		IsChannelActive:   s.cfg.IsChannelActive,
-		ChainParams:       s.cfg.ChainParams,
-		NodeSigner:        s.cfg.NodeSigner,
-		MaxPaymentMSat:    s.cfg.MaxPaymentMSat,
-		DefaultCLTVExpiry: s.cfg.DefaultCLTVExpiry,
-		ChanDB:            s.cfg.ChanDB,
+		AddInvoice:         s.cfg.InvoiceRegistry.AddInvoice,
+		IsChannelActive:    s.cfg.IsChannelActive,
+		ChainParams:        s.cfg.ChainParams,
+		NodeSigner:         s.cfg.NodeSigner,
+		MaxPaymentMSat:     s.cfg.MaxPaymentMSat,
+		DefaultCLTVExpiry:  s.cfg.DefaultCLTVExpiry,
+		ChanDB:             s.cfg.ChanDB,
+		GenInvoiceFeatures: s.cfg.GenInvoiceFeatures,
 	}
 
 	hash, err := lntypes.MakeHash(invoice.Hash)

rpcserver.go

@@ -36,6 +36,7 @@ import (
 	"github.com/lightningnetwork/lnd/channelnotifier"
 	"github.com/lightningnetwork/lnd/contractcourt"
 	"github.com/lightningnetwork/lnd/discovery"
+	"github.com/lightningnetwork/lnd/feature"
 	"github.com/lightningnetwork/lnd/htlcswitch"
 	"github.com/lightningnetwork/lnd/input"
 	"github.com/lightningnetwork/lnd/invoices"
@@ -549,6 +550,10 @@ func newRPCServer(s *server, macService *macaroons.Service,
 		MaxTotalTimelock: cfg.MaxOutgoingCltvExpiry,
 	}
 
+	genInvoiceFeatures := func() *lnwire.FeatureVector {
+		return s.featureMgr.Get(feature.SetInvoice)
+	}
+
 	var (
 		subServers     []lnrpc.SubServer
 		subServerPerms []lnrpc.MacaroonPerms
@@ -561,7 +566,7 @@ func newRPCServer(s *server, macService *macaroons.Service,
 		s.cc, networkDir, macService, atpl, invoiceRegistry,
 		s.htlcSwitch, activeNetParams.Params, s.chanRouter,
 		routerBackend, s.nodeSigner, s.chanDB, s.sweeper, tower,
-		s.towerClient, cfg.net.ResolveTCPAddr,
+		s.towerClient, cfg.net.ResolveTCPAddr, genInvoiceFeatures,
 	)
 	if err != nil {
 		return nil, err
@@ -3633,6 +3638,9 @@ func (r *rpcServer) AddInvoice(ctx context.Context,
 		MaxPaymentMSat:    MaxPaymentMSat,
 		DefaultCLTVExpiry: defaultDelta,
 		ChanDB:            r.server.chanDB,
+		GenInvoiceFeatures: func() *lnwire.FeatureVector {
+			return r.server.featureMgr.Get(feature.SetInvoice)
+		},
 	}
 
 	value, err := lnrpc.UnmarshallAmt(invoice.Value, invoice.ValueMsat)

subrpcserver_config.go

@@ -18,6 +18,7 @@ import (
 	"github.com/lightningnetwork/lnd/lnrpc/walletrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/watchtowerrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/wtclientrpc"
+	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/lightningnetwork/lnd/macaroons"
 	"github.com/lightningnetwork/lnd/netann"
 	"github.com/lightningnetwork/lnd/routing"
@@ -92,7 +93,8 @@ func (s *subRPCServerConfigs) PopulateDependencies(cc *chainControl,
 	sweeper *sweep.UtxoSweeper,
 	tower *watchtower.Standalone,
 	towerClient wtclient.Client,
-	tcpResolver lncfg.TCPResolver) error {
+	tcpResolver lncfg.TCPResolver,
+	genInvoiceFeatures func() *lnwire.FeatureVector) error {
 
 	// First, we'll use reflect to obtain a version of the config struct
 	// that allows us to programmatically inspect its fields.
@@ -210,6 +212,9 @@ func (s *subRPCServerConfigs) PopulateDependencies(cc *chainControl,
 			subCfgValue.FieldByName("ChanDB").Set(
 				reflect.ValueOf(chanDB),
 			)
+			subCfgValue.FieldByName("GenInvoiceFeatures").Set(
+				reflect.ValueOf(genInvoiceFeatures),
+			)
 
 		case *routerrpc.Config:
 			subCfgValue := extractReflectValue(subCfg)