A minimal version of the RFQ system

asset/encoding.go

@@ -140,13 +140,16 @@ func CompressedPubKeyEncoder(w io.Writer, val any, buf *[8]byte) error {
 	return tlv.NewTypeForEncodingErr(val, "*btcec.PublicKey")
 }
 
-func CompressedPubKeyDecoder(r io.Reader, val any, buf *[8]byte, l uint64) error {
+func CompressedPubKeyDecoder(r io.Reader, val any, buf *[8]byte,
+	l uint64) error {
+
 	if typ, ok := val.(**btcec.PublicKey); ok {
 		var keyBytes [btcec.PubKeyBytesLenCompressed]byte
 		err := tlv.DBytes33(r, &keyBytes, buf, btcec.PubKeyBytesLenCompressed)
 		if err != nil {
 			return err
 		}
+
 		var key *btcec.PublicKey
 		// Handle empty key, which is not on the curve.
 		if keyBytes == [btcec.PubKeyBytesLenCompressed]byte{} {
@@ -160,6 +163,7 @@ func CompressedPubKeyDecoder(r io.Reader, val any, buf *[8]byte, l uint64) error
 		*typ = key
 		return nil
 	}
+
 	return tlv.NewTypeForDecodingErr(
 		val, "*btcec.PublicKey", l, btcec.PubKeyBytesLenCompressed,
 	)

chain_bridge.go

@@ -7,6 +7,7 @@ import (
 	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/lightninglabs/lndclient"
+	"github.com/lightninglabs/taproot-assets/rfq"
 	"github.com/lightninglabs/taproot-assets/tapgarden"
 	"github.com/lightningnetwork/lnd/chainntnfs"
 	"github.com/lightningnetwork/lnd/lnrpc/verrpc"
@@ -203,3 +204,61 @@ func (l *LndRpcChainBridge) EstimateFee(ctx context.Context,
 // A compile time assertion to ensure LndRpcChainBridge meets the
 // tapgarden.ChainBridge interface.
 var _ tapgarden.ChainBridge = (*LndRpcChainBridge)(nil)
+
+// LndMsgTransportClient is an LND RPC message transport client.
+type LndMsgTransportClient struct {
+	lnd *lndclient.LndServices
+}
+
+// NewLndMsgTransportClient creates a new message transport RPC client for a
+// given LND service.
+func NewLndMsgTransportClient(
+	lnd *lndclient.LndServices) *LndMsgTransportClient {
+
+	return &LndMsgTransportClient{
+		lnd: lnd,
+	}
+}
+
+// SubscribeCustomMessages creates a subscription to custom messages received
+// from our peers.
+func (l *LndMsgTransportClient) SubscribeCustomMessages(
+	ctx context.Context) (<-chan lndclient.CustomMessage,
+	<-chan error, error) {
+
+	return l.lnd.Client.SubscribeCustomMessages(ctx)
+}
+
+// SendCustomMessage sends a custom message to a peer.
+func (l *LndMsgTransportClient) SendCustomMessage(ctx context.Context,
+	msg lndclient.CustomMessage) error {
+
+	return l.lnd.Client.SendCustomMessage(ctx, msg)
+}
+
+// Ensure LndMsgTransportClient implements the rfq.PeerMessenger interface.
+var _ rfq.PeerMessenger = (*LndMsgTransportClient)(nil)
+
+// LndRouterClient is an LND router RPC client.
+type LndRouterClient struct {
+	lnd *lndclient.LndServices
+}
+
+// NewLndRouterClient creates a new LND router client for a given LND service.
+func NewLndRouterClient(lnd *lndclient.LndServices) *LndRouterClient {
+	return &LndRouterClient{
+		lnd: lnd,
+	}
+}
+
+// InterceptHtlcs intercepts all incoming HTLCs and calls the given handler
+// function with the HTLC details. The handler function can then decide whether
+// to accept or reject the HTLC.
+func (l *LndRouterClient) InterceptHtlcs(
+	ctx context.Context, handler lndclient.HtlcInterceptHandler) error {
+
+	return l.lnd.Router.InterceptHtlcs(ctx, handler)
+}
+
+// Ensure LndRouterClient implements the rfq.HtlcInterceptor interface.
+var _ rfq.HtlcInterceptor = (*LndRouterClient)(nil)

config.go

@@ -10,6 +10,7 @@ import (
 	"github.com/lightninglabs/taproot-assets/address"
 	"github.com/lightninglabs/taproot-assets/monitoring"
 	"github.com/lightninglabs/taproot-assets/proof"
+	"github.com/lightninglabs/taproot-assets/rfq"
 	"github.com/lightninglabs/taproot-assets/tapdb"
 	"github.com/lightninglabs/taproot-assets/tapfreighter"
 	"github.com/lightninglabs/taproot-assets/tapgarden"
@@ -122,6 +123,8 @@ type Config struct {
 
 	UniverseFederation *universe.FederationEnvoy
 
+	RfqManager *rfq.Manager
+
 	UniverseStats universe.Telemetry
 
 	// UniversePublicAccess is flag which, If true, and the Universe server

itest/interface.go

@@ -4,6 +4,7 @@ import (
 	"github.com/lightninglabs/taproot-assets/taprpc"
 	"github.com/lightninglabs/taproot-assets/taprpc/assetwalletrpc"
 	"github.com/lightninglabs/taproot-assets/taprpc/mintrpc"
+	"github.com/lightninglabs/taproot-assets/taprpc/rfqrpc"
 	unirpc "github.com/lightninglabs/taproot-assets/taprpc/universerpc"
 )
 
@@ -12,5 +13,6 @@ type TapdClient interface {
 	taprpc.TaprootAssetsClient
 	unirpc.UniverseClient
 	mintrpc.MintClient
+	rfqrpc.RfqClient
 	assetwalletrpc.AssetWalletClient
 }

itest/loadtest/utils.go

@@ -17,6 +17,7 @@ import (
 	"github.com/lightninglabs/taproot-assets/taprpc"
 	"github.com/lightninglabs/taproot-assets/taprpc/assetwalletrpc"
 	"github.com/lightninglabs/taproot-assets/taprpc/mintrpc"
+	"github.com/lightninglabs/taproot-assets/taprpc/rfqrpc"
 	"github.com/lightninglabs/taproot-assets/taprpc/tapdevrpc"
 	"github.com/lightninglabs/taproot-assets/taprpc/universerpc"
 	"github.com/lightningnetwork/lnd/macaroons"
@@ -38,6 +39,7 @@ type rpcClient struct {
 	assetwalletrpc.AssetWalletClient
 	tapdevrpc.TapDevClient
 	mintrpc.MintClient
+	rfqrpc.RfqClient
 	universerpc.UniverseClient
 }
 
@@ -171,6 +173,7 @@ func getTapClient(t *testing.T, ctx context.Context,
 	assetWalletClient := assetwalletrpc.NewAssetWalletClient(conn)
 	devClient := tapdevrpc.NewTapDevClient(conn)
 	mintMintClient := mintrpc.NewMintClient(conn)
+	rfqClient := rfqrpc.NewRfqClient(conn)
 	universeClient := universerpc.NewUniverseClient(conn)
 
 	client := &rpcClient{
@@ -179,6 +182,7 @@ func getTapClient(t *testing.T, ctx context.Context,
 		AssetWalletClient:   assetWalletClient,
 		TapDevClient:        devClient,
 		MintClient:          mintMintClient,
+		RfqClient:           rfqClient,
 		UniverseClient:      universeClient,
 	}