mirror of
https://github.com/lightninglabs/loop
synced 2024-11-08 01:10:29 +00:00
Merge pull request #378 from carlaKC/383-cancelation
loopout: Add swap cancelation for swaps that cannot route off-chain
This commit is contained in:
Carla Kirk-Cohen
GitHub
commit
124eeea9d3
@ -142,6 +142,7 @@ func NewClient(dbDir string, cfg *ClientConfig) (*Client, func(), error) {
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sweeper: sweeper,
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createExpiryTimer: config.CreateExpiryTimer,
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loopOutMaxParts: cfg.LoopOutMaxParts,
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cancelSwap: swapServerClient.CancelLoopOutSwap,
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})
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client := &Client{
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@ -100,6 +100,7 @@ func TestFailOffchain(t *testing.T) {
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signalPrepaymentResult(
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errors.New(lndclient.PaymentResultUnknownPaymentHash),
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)
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<-ctx.serverMock.cancelSwap
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ctx.assertStatus(loopdb.StateFailOffchainPayments)
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ctx.assertStoreFinished(loopdb.StateFailOffchainPayments)
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@ -25,6 +25,8 @@ type executorConfig struct {
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createExpiryTimer func(expiry time.Duration) <-chan time.Time
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loopOutMaxParts uint32
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cancelSwap func(ctx context.Context, details *outCancelDetails) error
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}
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// executor is responsible for executing swaps.
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@ -138,13 +140,17 @@ func (s *executor) run(mainCtx context.Context,
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go func() {
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defer s.wg.Done()
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newSwap.execute(mainCtx, &executeConfig{
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err := newSwap.execute(mainCtx, &executeConfig{
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statusChan: statusChan,
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sweeper: s.sweeper,
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blockEpochChan: queue.ChanOut(),
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timerFactory: s.executorConfig.createExpiryTimer,
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loopOutMaxParts: s.executorConfig.loopOutMaxParts,
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cancelSwap: s.executorConfig.cancelSwap,
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}, height)
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if err != nil && err != context.Canceled {
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log.Errorf("Execute error: %v", err)
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}
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select {
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case swapDoneChan <- swapID:
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@ -39,13 +39,17 @@ const (
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// invoice so that the server can perform a multi-path probe.
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ProtocolVersionMultiLoopIn ProtocolVersion = 6
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// ProtocolVersionLoopOutCancel indicates that the client supports
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// canceling loop out swaps.
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ProtocolVersionLoopOutCancel = 7
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// ProtocolVersionUnrecorded is set for swaps were created before we
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// started saving protocol version with swaps.
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ProtocolVersionUnrecorded ProtocolVersion = math.MaxUint32
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// CurrentRPCProtocolVersion defines the version of the RPC protocol
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// that is currently supported by the loop client.
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CurrentRPCProtocolVersion = looprpc.ProtocolVersion_MULTI_LOOP_IN
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CurrentRPCProtocolVersion = looprpc.ProtocolVersion_LOOP_OUT_CANCEL
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// CurrentInternalProtocolVersion defines the RPC current protocol in
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// the internal representation.
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@ -81,6 +85,9 @@ func (p ProtocolVersion) String() string {
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case ProtocolVersionHtlcV2:
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return "HTLC V2"
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case ProtocolVersionLoopOutCancel:
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return "Loop Out Cancel"
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default:
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return "Unknown"
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}
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@ -21,6 +21,7 @@ func TestProtocolVersionSanity(t *testing.T) {
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ProtocolVersionUserExpiryLoopOut,
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ProtocolVersionHtlcV2,
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ProtocolVersionMultiLoopIn,
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ProtocolVersionLoopOutCancel,
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}
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rpcVersions := [...]looprpc.ProtocolVersion{
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@ -31,6 +32,7 @@ func TestProtocolVersionSanity(t *testing.T) {
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looprpc.ProtocolVersion_USER_EXPIRY_LOOP_OUT,
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looprpc.ProtocolVersion_HTLC_V2,
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looprpc.ProtocolVersion_MULTI_LOOP_IN,
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looprpc.ProtocolVersion_LOOP_OUT_CANCEL,
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}
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require.Equal(t, len(versions), len(rpcVersions))
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@ -39,6 +39,7 @@ func newLoopInTestContext(t *testing.T) *loopInTestContext {
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sweeper: &sweeper,
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blockEpochChan: blockEpochChan,
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timerFactory: timerFactory,
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cancelSwap: server.CancelLoopOutSwap,
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}
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return &loopInTestContext{
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246
loopout.go
246
loopout.go
@ -6,6 +6,7 @@ import (
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"crypto/sha256"
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"errors"
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"fmt"
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"math"
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"sync"
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"time"
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@ -21,8 +22,17 @@ import (
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/lnrpc"
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"github.com/lightningnetwork/lnd/lntypes"
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"github.com/lightningnetwork/lnd/zpay32"
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)
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// loopInternalHops indicate the number of hops that a loop out swap makes in
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// the server's off-chain infrastructure. We are ok reporting failure distances
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// from the server up until this point, because every swap takes these two
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// hops, so surfacing this information does not identify the client in any way.
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// After this point, the client does not report failure distances, so that
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// sender-privacy is preserved.
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const loopInternalHops = 2
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var (
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// MinLoopOutPreimageRevealDelta configures the minimum number of
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// remaining blocks before htlc expiry required to reveal preimage.
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@ -62,8 +72,8 @@ type loopOutSwap struct {
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// htlcTxHash is the confirmed htlc tx id.
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htlcTxHash *chainhash.Hash
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swapPaymentChan chan lndclient.PaymentResult
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prePaymentChan chan lndclient.PaymentResult
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swapPaymentChan chan paymentResult
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prePaymentChan chan paymentResult
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wg sync.WaitGroup
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}
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@ -75,6 +85,7 @@ type executeConfig struct {
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blockEpochChan <-chan interface{}
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timerFactory func(d time.Duration) <-chan time.Time
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loopOutMaxParts uint32
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cancelSwap func(context.Context, *outCancelDetails) error
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}
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// loopOutInitResult contains information about a just-initiated loop out swap.
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@ -340,27 +351,35 @@ func (s *loopOutSwap) executeAndFinalize(globalCtx context.Context) error {
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select {
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case result := <-s.swapPaymentChan:
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s.swapPaymentChan = nil
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if result.Err != nil {
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err := s.handlePaymentResult(result)
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if err != nil {
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return err
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}
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if result.failure() != nil {
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// Server didn't pull the swap payment.
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s.log.Infof("Swap payment failed: %v",
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result.Err)
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result.failure())
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continue
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}
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s.cost.Server += result.PaidAmt
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s.cost.Offchain += result.PaidFee
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case result := <-s.prePaymentChan:
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s.prePaymentChan = nil
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if result.Err != nil {
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err := s.handlePaymentResult(result)
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if err != nil {
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return err
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}
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if result.failure() != nil {
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// Server didn't pull the prepayment.
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s.log.Infof("Prepayment failed: %v",
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result.Err)
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result.failure())
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continue
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}
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s.cost.Server += result.PaidAmt
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s.cost.Offchain += result.PaidFee
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case <-globalCtx.Done():
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return globalCtx.Err()
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@ -379,6 +398,27 @@ func (s *loopOutSwap) executeAndFinalize(globalCtx context.Context) error {
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return s.persistState(globalCtx)
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}
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func (s *loopOutSwap) handlePaymentResult(result paymentResult) error {
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switch {
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// If our result has a non-nil error, our status will be nil. In this
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// case the payment failed so we do not need to take any action.
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case result.err != nil:
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return nil
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case result.status.State == lnrpc.Payment_SUCCEEDED:
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s.cost.Server += result.status.Value.ToSatoshis()
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s.cost.Offchain += result.status.Fee.ToSatoshis()
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return nil
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case result.status.State == lnrpc.Payment_FAILED:
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return nil
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default:
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return fmt.Errorf("unexpected state: %v", result.status.State)
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}
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}
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// executeSwap executes the swap, but returns as soon as the swap outcome is
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// final. At that point, there may still be pending off-chain payment(s).
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func (s *loopOutSwap) executeSwap(globalCtx context.Context) error {
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@ -510,31 +550,64 @@ func (s *loopOutSwap) payInvoices(ctx context.Context) {
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)
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}
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// paymentResult contains the response for a failed or settled payment, and
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// any errors that occurred if the payment unexpectedly failed.
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type paymentResult struct {
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status lndclient.PaymentStatus
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err error
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}
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// failure returns the error we encountered trying to dispatch a payment result,
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// if any.
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func (p paymentResult) failure() error {
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if p.err != nil {
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return p.err
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}
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if p.status.State == lnrpc.Payment_SUCCEEDED {
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return nil
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}
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return fmt.Errorf("payment failed: %v", p.status.FailureReason)
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}
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// payInvoice pays a single invoice.
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func (s *loopOutSwap) payInvoice(ctx context.Context, invoice string,
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maxFee btcutil.Amount,
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outgoingChanIds loopdb.ChannelSet) chan lndclient.PaymentResult {
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outgoingChanIds loopdb.ChannelSet) chan paymentResult {
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resultChan := make(chan lndclient.PaymentResult)
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resultChan := make(chan paymentResult)
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sendResult := func(result paymentResult) {
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select {
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case resultChan <- result:
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case <-ctx.Done():
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}
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}
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go func() {
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var result lndclient.PaymentResult
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var result paymentResult
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status, err := s.payInvoiceAsync(
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ctx, invoice, maxFee, outgoingChanIds,
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)
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if err != nil {
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result.Err = err
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} else {
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result.Preimage = status.Preimage
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result.PaidFee = status.Fee.ToSatoshis()
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result.PaidAmt = status.Value.ToSatoshis()
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result.err = err
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sendResult(result)
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return
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}
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select {
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case resultChan <- result:
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case <-ctx.Done():
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// If our payment failed or succeeded, our status should be
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// non-nil.
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switch status.State {
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case lnrpc.Payment_FAILED, lnrpc.Payment_SUCCEEDED:
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result.status = *status
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default:
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result.err = fmt.Errorf("unexpected payment state: %v",
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status.State)
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}
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sendResult(result)
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}()
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return resultChan
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@ -583,7 +656,7 @@ func (s *loopOutSwap) payInvoiceAsync(ctx context.Context,
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return &payState, nil
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case lnrpc.Payment_FAILED:
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return nil, errors.New("payment failed")
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return &payState, nil
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case lnrpc.Payment_IN_FLIGHT:
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// Continue waiting for final state.
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@ -686,30 +759,45 @@ func (s *loopOutSwap) waitForConfirmedHtlc(globalCtx context.Context) (
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// have lost the prepayment.
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case result := <-s.swapPaymentChan:
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s.swapPaymentChan = nil
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if result.Err != nil {
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s.state = loopdb.StateFailOffchainPayments
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s.log.Infof("Failed swap payment: %v",
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result.Err)
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err := s.handlePaymentResult(result)
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if err != nil {
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return nil, err
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}
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if result.failure() != nil {
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s.log.Infof("Failed swap payment: %v",
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result.failure())
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s.failOffChain(
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ctx, paymentTypeInvoice,
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result.status,
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)
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return nil, nil
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}
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s.cost.Server += result.PaidAmt
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s.cost.Offchain += result.PaidFee
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// If the prepay fails, abandon the swap. Because we
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// didn't reveal the preimage, the swap payment will be
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// canceled or time out.
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case result := <-s.prePaymentChan:
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s.prePaymentChan = nil
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if result.Err != nil {
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s.state = loopdb.StateFailOffchainPayments
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err := s.handlePaymentResult(result)
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if err != nil {
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return nil, err
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}
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if result.failure() != nil {
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s.log.Infof("Failed prepayment: %v",
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result.Err)
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result.failure())
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s.failOffChain(
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ctx, paymentTypeInvoice,
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result.status,
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)
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return nil, nil
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}
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s.cost.Server += result.PaidAmt
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s.cost.Offchain += result.PaidFee
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// Unexpected error on the confirm channel happened,
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// abandon the swap.
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@ -901,6 +989,98 @@ func (s *loopOutSwap) pushPreimage(ctx context.Context) {
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}
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}
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// failOffChain updates a swap's state when it has failed due to a routing
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// failure and notifies the server of the failure.
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func (s *loopOutSwap) failOffChain(ctx context.Context, paymentType paymentType,
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status lndclient.PaymentStatus) {
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// Set our state to failed off chain timeout.
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s.state = loopdb.StateFailOffchainPayments
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swapPayReq, err := zpay32.Decode(
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s.LoopOutContract.SwapInvoice, s.swapConfig.lnd.ChainParams,
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)
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if err != nil {
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s.log.Errorf("could not decode swap invoice: %v", err)
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return
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}
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if swapPayReq.PaymentAddr == nil {
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s.log.Errorf("expected payment address for invoice")
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return
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}
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details := &outCancelDetails{
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hash: s.hash,
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paymentAddr: *swapPayReq.PaymentAddr,
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metadata: routeCancelMetadata{
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paymentType: paymentType,
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failureReason: status.FailureReason,
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},
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}
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for _, htlc := range status.Htlcs {
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if htlc.Status != lnrpc.HTLCAttempt_FAILED {
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continue
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}
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if htlc.Route == nil {
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continue
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}
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if len(htlc.Route.Hops) == 0 {
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continue
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}
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if htlc.Failure == nil {
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continue
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}
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failureIdx := htlc.Failure.FailureSourceIndex
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hops := uint32(len(htlc.Route.Hops))
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|
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// We really don't expect a failure index that is greater than
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// our number of hops. This is because failure index is zero
|
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// based, where a value of zero means that the payment failed
|
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// at the client's node, and a value = len(hops) means that it
|
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// failed at the last node in the route. We don't want to
|
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// underflow so we check and log a warning if this happens.
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if failureIdx > hops {
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s.log.Warnf("Htlc attempt failure index > hops",
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failureIdx, hops)
|
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|
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continue
|
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}
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|
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// Add the number of hops from the server that we failed at
|
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// to the set of attempts that we will report to the server.
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distance := hops - failureIdx
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|
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// In the case that our swap failed in the network at large,
|
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// rather than the loop server's internal infrastructure, we
|
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// don't want to disclose and information about distance from
|
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// the server, so we set maxUint32 to represent failure in
|
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// "the network at large" rather than due to the server's
|
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// liquidity.
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if distance > loopInternalHops {
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distance = math.MaxUint32
|
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}
|
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|
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details.metadata.attempts = append(
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details.metadata.attempts, distance,
|
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)
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}
|
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|
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s.log.Infof("Canceling swap: %v payment failed: %v, %v attempts",
|
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paymentType, details.metadata.failureReason,
|
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len(details.metadata.attempts))
|
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|
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// Report to server, it's not critical if this doesn't go through.
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if err := s.cancelSwap(ctx, details); err != nil {
|
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s.log.Warnf("Could not report failure: %v", err)
|
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}
|
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}
|
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|
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// sweep tries to sweep the given htlc to a destination address. It takes into
|
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// account the max miner fee and marks the preimage as revealed when it
|
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// published the tx. If the preimage has not yet been revealed, and the time
|
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|
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143
loopout_test.go
143
loopout_test.go
@ -3,6 +3,7 @@ package loop
|
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import (
|
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"context"
|
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"errors"
|
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"math"
|
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"reflect"
|
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"testing"
|
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"time"
|
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@ -16,6 +17,7 @@ import (
|
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"github.com/lightninglabs/loop/test"
|
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"github.com/lightningnetwork/lnd/lnrpc"
|
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"github.com/lightningnetwork/lnd/lnwallet/chainfee"
|
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"github.com/lightningnetwork/lnd/zpay32"
|
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"github.com/stretchr/testify/require"
|
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)
|
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|
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@ -73,6 +75,7 @@ func TestLoopOutPaymentParameters(t *testing.T) {
|
||||
blockEpochChan: blockEpochChan,
|
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timerFactory: timerFactory,
|
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loopOutMaxParts: maxParts,
|
||||
cancelSwap: server.CancelLoopOutSwap,
|
||||
}, height)
|
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if err != nil {
|
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log.Error(err)
|
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@ -173,6 +176,7 @@ func TestLateHtlcPublish(t *testing.T) {
|
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sweeper: sweeper,
|
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blockEpochChan: blockEpochChan,
|
||||
timerFactory: timerFactory,
|
||||
cancelSwap: server.CancelLoopOutSwap,
|
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}, height)
|
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if err != nil {
|
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log.Error(err)
|
||||
@ -267,6 +271,7 @@ func TestCustomSweepConfTarget(t *testing.T) {
|
||||
blockEpochChan: blockEpochChan,
|
||||
timerFactory: timerFactory,
|
||||
sweeper: sweeper,
|
||||
cancelSwap: server.CancelLoopOutSwap,
|
||||
}, ctx.Lnd.Height)
|
||||
if err != nil {
|
||||
log.Error(err)
|
||||
@ -461,6 +466,7 @@ func TestPreimagePush(t *testing.T) {
|
||||
blockEpochChan: blockEpochChan,
|
||||
timerFactory: timerFactory,
|
||||
sweeper: sweeper,
|
||||
cancelSwap: server.CancelLoopOutSwap,
|
||||
}, ctx.Lnd.Height)
|
||||
if err != nil {
|
||||
log.Error(err)
|
||||
@ -697,3 +703,140 @@ func TestExpiryBeforeReveal(t *testing.T) {
|
||||
|
||||
require.Nil(t, <-errChan)
|
||||
}
|
||||
|
||||
// TestFailedOffChainCancelation tests sending of a cancelation message to
|
||||
// the server when a swap fails due to off-chain routing.
|
||||
func TestFailedOffChainCancelation(t *testing.T) {
|
||||
defer test.Guard(t)()
|
||||
|
||||
lnd := test.NewMockLnd()
|
||||
ctx := test.NewContext(t, lnd)
|
||||
server := newServerMock(lnd)
|
||||
|
||||
testReq := *testRequest
|
||||
testReq.Expiry = lnd.Height + 20
|
||||
|
||||
cfg := newSwapConfig(
|
||||
&lnd.LndServices, newStoreMock(t), server,
|
||||
)
|
||||
|
||||
initResult, err := newLoopOutSwap(
|
||||
context.Background(), cfg, lnd.Height, &testReq,
|
||||
)
|
||||
require.NoError(t, err)
|
||||
swap := initResult.swap
|
||||
|
||||
// Set up the required dependencies to execute the swap.
|
||||
sweeper := &sweep.Sweeper{Lnd: &lnd.LndServices}
|
||||
blockEpochChan := make(chan interface{})
|
||||
statusChan := make(chan SwapInfo)
|
||||
expiryChan := make(chan time.Time)
|
||||
timerFactory := func(_ time.Duration) <-chan time.Time {
|
||||
return expiryChan
|
||||
}
|
||||
|
||||
errChan := make(chan error)
|
||||
go func() {
|
||||
cfg := &executeConfig{
|
||||
statusChan: statusChan,
|
||||
sweeper: sweeper,
|
||||
blockEpochChan: blockEpochChan,
|
||||
timerFactory: timerFactory,
|
||||
cancelSwap: server.CancelLoopOutSwap,
|
||||
}
|
||||
|
||||
err := swap.execute(context.Background(), cfg, ctx.Lnd.Height)
|
||||
errChan <- err
|
||||
}()
|
||||
|
||||
// The swap should be found in its initial state.
|
||||
cfg.store.(*storeMock).assertLoopOutStored()
|
||||
state := <-statusChan
|
||||
require.Equal(t, loopdb.StateInitiated, state.State)
|
||||
|
||||
// Assert that we register for htlc confirmation notifications.
|
||||
ctx.AssertRegisterConf(false, defaultConfirmations)
|
||||
|
||||
// We expect prepayment and invoice to be dispatched, order is unknown.
|
||||
pmt1 := <-ctx.Lnd.RouterSendPaymentChannel
|
||||
pmt2 := <-ctx.Lnd.RouterSendPaymentChannel
|
||||
|
||||
failUpdate := lndclient.PaymentStatus{
|
||||
State: lnrpc.Payment_FAILED,
|
||||
FailureReason: lnrpc.PaymentFailureReason_FAILURE_REASON_ERROR,
|
||||
Htlcs: []*lndclient.HtlcAttempt{
|
||||
{
|
||||
// Include a non-failed htlc to test that we
|
||||
// only report failed htlcs.
|
||||
Status: lnrpc.HTLCAttempt_IN_FLIGHT,
|
||||
},
|
||||
// Add one htlc that failed within the server's
|
||||
// infrastructure.
|
||||
{
|
||||
Status: lnrpc.HTLCAttempt_FAILED,
|
||||
Route: &lnrpc.Route{
|
||||
Hops: []*lnrpc.Hop{
|
||||
{}, {}, {},
|
||||
},
|
||||
},
|
||||
Failure: &lndclient.HtlcFailure{
|
||||
FailureSourceIndex: 1,
|
||||
},
|
||||
},
|
||||
// Add one htlc that failed in the network at wide.
|
||||
{
|
||||
Status: lnrpc.HTLCAttempt_FAILED,
|
||||
Route: &lnrpc.Route{
|
||||
Hops: []*lnrpc.Hop{
|
||||
{}, {}, {}, {}, {},
|
||||
},
|
||||
},
|
||||
Failure: &lndclient.HtlcFailure{
|
||||
FailureSourceIndex: 1,
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
successUpdate := lndclient.PaymentStatus{
|
||||
State: lnrpc.Payment_SUCCEEDED,
|
||||
}
|
||||
|
||||
// We want to fail our swap payment and succeed the prepush, so we send
|
||||
// a failure update to the payment that has the larger amount.
|
||||
if pmt1.Amount > pmt2.Amount {
|
||||
pmt1.TrackPaymentMessage.Updates <- failUpdate
|
||||
pmt2.TrackPaymentMessage.Updates <- successUpdate
|
||||
} else {
|
||||
pmt1.TrackPaymentMessage.Updates <- successUpdate
|
||||
pmt2.TrackPaymentMessage.Updates <- failUpdate
|
||||
}
|
||||
|
||||
invoice, err := zpay32.Decode(
|
||||
swap.LoopOutContract.SwapInvoice, lnd.ChainParams,
|
||||
)
|
||||
require.NoError(t, err)
|
||||
require.NotNil(t, invoice.PaymentAddr)
|
||||
|
||||
swapCancelation := &outCancelDetails{
|
||||
hash: swap.hash,
|
||||
paymentAddr: *invoice.PaymentAddr,
|
||||
metadata: routeCancelMetadata{
|
||||
paymentType: paymentTypeInvoice,
|
||||
failureReason: failUpdate.FailureReason,
|
||||
attempts: []uint32{
|
||||
2,
|
||||
math.MaxUint32,
|
||||
},
|
||||
},
|
||||
}
|
||||
server.assertSwapCanceled(t, swapCancelation)
|
||||
|
||||
// Finally, the swap should be recorded with failed off chain timeout.
|
||||
cfg.store.(*storeMock).assertLoopOutState(
|
||||
loopdb.StateFailOffchainPayments,
|
||||
)
|
||||
state = <-statusChan
|
||||
require.Equal(t, state.State, loopdb.StateFailOffchainPayments)
|
||||
require.NoError(t, <-errChan)
|
||||
}
|
||||
|
||||
@ -54,6 +54,8 @@ const (
|
||||
// The client creates a probe invoice so that the server can perform a
|
||||
// multi-path probe.
|
||||
ProtocolVersion_MULTI_LOOP_IN ProtocolVersion = 6
|
||||
// The client supports loop out swap cancelation.
|
||||
ProtocolVersion_LOOP_OUT_CANCEL ProtocolVersion = 7
|
||||
)
|
||||
|
||||
var ProtocolVersion_name = map[int32]string{
|
||||
@ -64,6 +66,7 @@ var ProtocolVersion_name = map[int32]string{
|
||||
4: "USER_EXPIRY_LOOP_OUT",
|
||||
5: "HTLC_V2",
|
||||
6: "MULTI_LOOP_IN",
|
||||
7: "LOOP_OUT_CANCEL",
|
||||
}
|
||||
|
||||
var ProtocolVersion_value = map[string]int32{
|
||||
@ -74,6 +77,7 @@ var ProtocolVersion_value = map[string]int32{
|
||||
"USER_EXPIRY_LOOP_OUT": 4,
|
||||
"HTLC_V2": 5,
|
||||
"MULTI_LOOP_IN": 6,
|
||||
"LOOP_OUT_CANCEL": 7,
|
||||
}
|
||||
|
||||
func (x ProtocolVersion) String() string {
|
||||
@ -121,6 +125,11 @@ const (
|
||||
ServerSwapState_UNEXPECTED_FAILURE ServerSwapState = 11
|
||||
// The swap htlc has confirmed on chain.
|
||||
ServerSwapState_HTLC_CONFIRMED ServerSwapState = 12
|
||||
// The client canceled the swap because they could not route the prepay.
|
||||
ServerSwapState_CLIENT_PREPAY_CANCEL ServerSwapState = 13
|
||||
// The client canceled the swap because they could not route the swap
|
||||
// payment.
|
||||
ServerSwapState_CLIENT_INVOICE_CANCEL ServerSwapState = 14
|
||||
)
|
||||
|
||||
var ServerSwapState_name = map[int32]string{
|
||||
@ -137,6 +146,8 @@ var ServerSwapState_name = map[int32]string{
|
||||
10: "TIMEOUT_PUBLISHED",
|
||||
11: "UNEXPECTED_FAILURE",
|
||||
12: "HTLC_CONFIRMED",
|
||||
13: "CLIENT_PREPAY_CANCEL",
|
||||
14: "CLIENT_INVOICE_CANCEL",
|
||||
}
|
||||
|
||||
var ServerSwapState_value = map[string]int32{
|
||||
@ -153,6 +164,8 @@ var ServerSwapState_value = map[string]int32{
|
||||
"TIMEOUT_PUBLISHED": 10,
|
||||
"UNEXPECTED_FAILURE": 11,
|
||||
"HTLC_CONFIRMED": 12,
|
||||
"CLIENT_PREPAY_CANCEL": 13,
|
||||
"CLIENT_INVOICE_CANCEL": 14,
|
||||
}
|
||||
|
||||
func (x ServerSwapState) String() string {
|
||||
@ -163,6 +176,92 @@ func (ServerSwapState) EnumDescriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{1}
|
||||
}
|
||||
|
||||
type RoutePaymentType int32
|
||||
|
||||
const (
|
||||
// No reason, used to distinguish from the default value.
|
||||
RoutePaymentType_UNKNOWN RoutePaymentType = 0
|
||||
// Prepay route indicates that the swap was canceled because the client
|
||||
// could not find a route to the server for the prepay.
|
||||
RoutePaymentType_PREPAY_ROUTE RoutePaymentType = 1
|
||||
// Invoice route indicates that the swap was canceled because the client
|
||||
// could not find a route to the server for the swap invoice.
|
||||
RoutePaymentType_INVOICE_ROUTE RoutePaymentType = 2
|
||||
)
|
||||
|
||||
var RoutePaymentType_name = map[int32]string{
|
||||
0: "UNKNOWN",
|
||||
1: "PREPAY_ROUTE",
|
||||
2: "INVOICE_ROUTE",
|
||||
}
|
||||
|
||||
var RoutePaymentType_value = map[string]int32{
|
||||
"UNKNOWN": 0,
|
||||
"PREPAY_ROUTE": 1,
|
||||
"INVOICE_ROUTE": 2,
|
||||
}
|
||||
|
||||
func (x RoutePaymentType) String() string {
|
||||
return proto.EnumName(RoutePaymentType_name, int32(x))
|
||||
}
|
||||
|
||||
func (RoutePaymentType) EnumDescriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{2}
|
||||
}
|
||||
|
||||
// PaymentFailureReason describes the reason that a payment failed. These
|
||||
// values are copied directly from lnd.
|
||||
type PaymentFailureReason int32
|
||||
|
||||
const (
|
||||
//
|
||||
//Payment isn't failed (yet).
|
||||
PaymentFailureReason_FAILURE_REASON_NONE PaymentFailureReason = 0
|
||||
//
|
||||
//There are more routes to try, but the payment timeout was exceeded.
|
||||
PaymentFailureReason_FAILURE_REASON_TIMEOUT PaymentFailureReason = 1
|
||||
//
|
||||
//All possible routes were tried and failed permanently. Or were no
|
||||
//routes to the destination at all.
|
||||
PaymentFailureReason_FAILURE_REASON_NO_ROUTE PaymentFailureReason = 2
|
||||
//
|
||||
//A non-recoverable error has occured.
|
||||
PaymentFailureReason_FAILURE_REASON_ERROR PaymentFailureReason = 3
|
||||
//
|
||||
//Payment details incorrect (unknown hash, invalid amt or
|
||||
//invalid final cltv delta)
|
||||
PaymentFailureReason_FAILURE_REASON_INCORRECT_PAYMENT_DETAILS PaymentFailureReason = 4
|
||||
//
|
||||
//Insufficient local balance.
|
||||
PaymentFailureReason_FAILURE_REASON_INSUFFICIENT_BALANCE PaymentFailureReason = 5
|
||||
)
|
||||
|
||||
var PaymentFailureReason_name = map[int32]string{
|
||||
0: "FAILURE_REASON_NONE",
|
||||
1: "FAILURE_REASON_TIMEOUT",
|
||||
2: "FAILURE_REASON_NO_ROUTE",
|
||||
3: "FAILURE_REASON_ERROR",
|
||||
4: "FAILURE_REASON_INCORRECT_PAYMENT_DETAILS",
|
||||
5: "FAILURE_REASON_INSUFFICIENT_BALANCE",
|
||||
}
|
||||
|
||||
var PaymentFailureReason_value = map[string]int32{
|
||||
"FAILURE_REASON_NONE": 0,
|
||||
"FAILURE_REASON_TIMEOUT": 1,
|
||||
"FAILURE_REASON_NO_ROUTE": 2,
|
||||
"FAILURE_REASON_ERROR": 3,
|
||||
"FAILURE_REASON_INCORRECT_PAYMENT_DETAILS": 4,
|
||||
"FAILURE_REASON_INSUFFICIENT_BALANCE": 5,
|
||||
}
|
||||
|
||||
func (x PaymentFailureReason) String() string {
|
||||
return proto.EnumName(PaymentFailureReason_name, int32(x))
|
||||
}
|
||||
|
||||
func (PaymentFailureReason) EnumDescriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{3}
|
||||
}
|
||||
|
||||
type ServerLoopOutRequest struct {
|
||||
ReceiverKey []byte `protobuf:"bytes,1,opt,name=receiver_key,json=receiverKey,proto3" json:"receiver_key,omitempty"`
|
||||
SwapHash []byte `protobuf:"bytes,2,opt,name=swap_hash,json=swapHash,proto3" json:"swap_hash,omitempty"`
|
||||
@ -1207,9 +1306,236 @@ func (m *SubscribeLoopInUpdatesResponse) GetState() ServerSwapState {
|
||||
return ServerSwapState_INITIATED
|
||||
}
|
||||
|
||||
type RouteCancel struct {
|
||||
// The type of the payment that failed.
|
||||
RouteType RoutePaymentType `protobuf:"varint,1,opt,name=route_type,json=routeType,proto3,enum=looprpc.RoutePaymentType" json:"route_type,omitempty"`
|
||||
// The htlcs that the client tried to pay the server with, if any.
|
||||
Attempts []*HtlcAttempt `protobuf:"bytes,2,rep,name=attempts,proto3" json:"attempts,omitempty"`
|
||||
// The reason that the payment failed.
|
||||
Failure PaymentFailureReason `protobuf:"varint,3,opt,name=failure,proto3,enum=looprpc.PaymentFailureReason" json:"failure,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *RouteCancel) Reset() { *m = RouteCancel{} }
|
||||
func (m *RouteCancel) String() string { return proto.CompactTextString(m) }
|
||||
func (*RouteCancel) ProtoMessage() {}
|
||||
func (*RouteCancel) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{17}
|
||||
}
|
||||
|
||||
func (m *RouteCancel) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_RouteCancel.Unmarshal(m, b)
|
||||
}
|
||||
func (m *RouteCancel) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_RouteCancel.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *RouteCancel) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_RouteCancel.Merge(m, src)
|
||||
}
|
||||
func (m *RouteCancel) XXX_Size() int {
|
||||
return xxx_messageInfo_RouteCancel.Size(m)
|
||||
}
|
||||
func (m *RouteCancel) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_RouteCancel.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_RouteCancel proto.InternalMessageInfo
|
||||
|
||||
func (m *RouteCancel) GetRouteType() RoutePaymentType {
|
||||
if m != nil {
|
||||
return m.RouteType
|
||||
}
|
||||
return RoutePaymentType_UNKNOWN
|
||||
}
|
||||
|
||||
func (m *RouteCancel) GetAttempts() []*HtlcAttempt {
|
||||
if m != nil {
|
||||
return m.Attempts
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *RouteCancel) GetFailure() PaymentFailureReason {
|
||||
if m != nil {
|
||||
return m.Failure
|
||||
}
|
||||
return PaymentFailureReason_FAILURE_REASON_NONE
|
||||
}
|
||||
|
||||
type HtlcAttempt struct {
|
||||
// The number of hops from the htlc's failure hop that it needed to take
|
||||
// to reach the server's node.
|
||||
RemainingHops uint32 `protobuf:"varint,1,opt,name=remaining_hops,json=remainingHops,proto3" json:"remaining_hops,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *HtlcAttempt) Reset() { *m = HtlcAttempt{} }
|
||||
func (m *HtlcAttempt) String() string { return proto.CompactTextString(m) }
|
||||
func (*HtlcAttempt) ProtoMessage() {}
|
||||
func (*HtlcAttempt) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{18}
|
||||
}
|
||||
|
||||
func (m *HtlcAttempt) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_HtlcAttempt.Unmarshal(m, b)
|
||||
}
|
||||
func (m *HtlcAttempt) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_HtlcAttempt.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *HtlcAttempt) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_HtlcAttempt.Merge(m, src)
|
||||
}
|
||||
func (m *HtlcAttempt) XXX_Size() int {
|
||||
return xxx_messageInfo_HtlcAttempt.Size(m)
|
||||
}
|
||||
func (m *HtlcAttempt) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_HtlcAttempt.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_HtlcAttempt proto.InternalMessageInfo
|
||||
|
||||
func (m *HtlcAttempt) GetRemainingHops() uint32 {
|
||||
if m != nil {
|
||||
return m.RemainingHops
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type CancelLoopOutSwapRequest struct {
|
||||
// The protocol version that the client adheres to.
|
||||
ProtocolVersion ProtocolVersion `protobuf:"varint,1,opt,name=protocol_version,json=protocolVersion,proto3,enum=looprpc.ProtocolVersion" json:"protocol_version,omitempty"`
|
||||
// The swap hash.
|
||||
SwapHash []byte `protobuf:"bytes,2,opt,name=swap_hash,json=swapHash,proto3" json:"swap_hash,omitempty"`
|
||||
// The payment address for the swap invoice, used to ensure that only the
|
||||
// swap owner can cancel the payment.
|
||||
PaymentAddress []byte `protobuf:"bytes,3,opt,name=payment_address,json=paymentAddress,proto3" json:"payment_address,omitempty"`
|
||||
// Additional information about the swap cancelation.
|
||||
//
|
||||
// Types that are valid to be assigned to CancelInfo:
|
||||
// *CancelLoopOutSwapRequest_RouteCancel
|
||||
CancelInfo isCancelLoopOutSwapRequest_CancelInfo `protobuf_oneof:"cancel_info"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) Reset() { *m = CancelLoopOutSwapRequest{} }
|
||||
func (m *CancelLoopOutSwapRequest) String() string { return proto.CompactTextString(m) }
|
||||
func (*CancelLoopOutSwapRequest) ProtoMessage() {}
|
||||
func (*CancelLoopOutSwapRequest) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{19}
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_CancelLoopOutSwapRequest.Unmarshal(m, b)
|
||||
}
|
||||
func (m *CancelLoopOutSwapRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_CancelLoopOutSwapRequest.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *CancelLoopOutSwapRequest) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_CancelLoopOutSwapRequest.Merge(m, src)
|
||||
}
|
||||
func (m *CancelLoopOutSwapRequest) XXX_Size() int {
|
||||
return xxx_messageInfo_CancelLoopOutSwapRequest.Size(m)
|
||||
}
|
||||
func (m *CancelLoopOutSwapRequest) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_CancelLoopOutSwapRequest.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_CancelLoopOutSwapRequest proto.InternalMessageInfo
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) GetProtocolVersion() ProtocolVersion {
|
||||
if m != nil {
|
||||
return m.ProtocolVersion
|
||||
}
|
||||
return ProtocolVersion_LEGACY
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) GetSwapHash() []byte {
|
||||
if m != nil {
|
||||
return m.SwapHash
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) GetPaymentAddress() []byte {
|
||||
if m != nil {
|
||||
return m.PaymentAddress
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type isCancelLoopOutSwapRequest_CancelInfo interface {
|
||||
isCancelLoopOutSwapRequest_CancelInfo()
|
||||
}
|
||||
|
||||
type CancelLoopOutSwapRequest_RouteCancel struct {
|
||||
RouteCancel *RouteCancel `protobuf:"bytes,5,opt,name=route_cancel,json=routeCancel,proto3,oneof"`
|
||||
}
|
||||
|
||||
func (*CancelLoopOutSwapRequest_RouteCancel) isCancelLoopOutSwapRequest_CancelInfo() {}
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) GetCancelInfo() isCancelLoopOutSwapRequest_CancelInfo {
|
||||
if m != nil {
|
||||
return m.CancelInfo
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapRequest) GetRouteCancel() *RouteCancel {
|
||||
if x, ok := m.GetCancelInfo().(*CancelLoopOutSwapRequest_RouteCancel); ok {
|
||||
return x.RouteCancel
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// XXX_OneofWrappers is for the internal use of the proto package.
|
||||
func (*CancelLoopOutSwapRequest) XXX_OneofWrappers() []interface{} {
|
||||
return []interface{}{
|
||||
(*CancelLoopOutSwapRequest_RouteCancel)(nil),
|
||||
}
|
||||
}
|
||||
|
||||
type CancelLoopOutSwapResponse struct {
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapResponse) Reset() { *m = CancelLoopOutSwapResponse{} }
|
||||
func (m *CancelLoopOutSwapResponse) String() string { return proto.CompactTextString(m) }
|
||||
func (*CancelLoopOutSwapResponse) ProtoMessage() {}
|
||||
func (*CancelLoopOutSwapResponse) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_ad098daeda4239f7, []int{20}
|
||||
}
|
||||
|
||||
func (m *CancelLoopOutSwapResponse) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_CancelLoopOutSwapResponse.Unmarshal(m, b)
|
||||
}
|
||||
func (m *CancelLoopOutSwapResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_CancelLoopOutSwapResponse.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *CancelLoopOutSwapResponse) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_CancelLoopOutSwapResponse.Merge(m, src)
|
||||
}
|
||||
func (m *CancelLoopOutSwapResponse) XXX_Size() int {
|
||||
return xxx_messageInfo_CancelLoopOutSwapResponse.Size(m)
|
||||
}
|
||||
func (m *CancelLoopOutSwapResponse) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_CancelLoopOutSwapResponse.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_CancelLoopOutSwapResponse proto.InternalMessageInfo
|
||||
|
||||
func init() {
|
||||
proto.RegisterEnum("looprpc.ProtocolVersion", ProtocolVersion_name, ProtocolVersion_value)
|
||||
proto.RegisterEnum("looprpc.ServerSwapState", ServerSwapState_name, ServerSwapState_value)
|
||||
proto.RegisterEnum("looprpc.RoutePaymentType", RoutePaymentType_name, RoutePaymentType_value)
|
||||
proto.RegisterEnum("looprpc.PaymentFailureReason", PaymentFailureReason_name, PaymentFailureReason_value)
|
||||
proto.RegisterType((*ServerLoopOutRequest)(nil), "looprpc.ServerLoopOutRequest")
|
||||
proto.RegisterType((*ServerLoopOutResponse)(nil), "looprpc.ServerLoopOutResponse")
|
||||
proto.RegisterType((*ServerLoopOutQuoteRequest)(nil), "looprpc.ServerLoopOutQuoteRequest")
|
||||
@ -1227,96 +1553,123 @@ func init() {
|
||||
proto.RegisterType((*SubscribeUpdatesRequest)(nil), "looprpc.SubscribeUpdatesRequest")
|
||||
proto.RegisterType((*SubscribeLoopOutUpdatesResponse)(nil), "looprpc.SubscribeLoopOutUpdatesResponse")
|
||||
proto.RegisterType((*SubscribeLoopInUpdatesResponse)(nil), "looprpc.SubscribeLoopInUpdatesResponse")
|
||||
proto.RegisterType((*RouteCancel)(nil), "looprpc.RouteCancel")
|
||||
proto.RegisterType((*HtlcAttempt)(nil), "looprpc.HtlcAttempt")
|
||||
proto.RegisterType((*CancelLoopOutSwapRequest)(nil), "looprpc.CancelLoopOutSwapRequest")
|
||||
proto.RegisterType((*CancelLoopOutSwapResponse)(nil), "looprpc.CancelLoopOutSwapResponse")
|
||||
}
|
||||
|
||||
func init() { proto.RegisterFile("server.proto", fileDescriptor_ad098daeda4239f7) }
|
||||
|
||||
var fileDescriptor_ad098daeda4239f7 = []byte{
|
||||
// 1336 bytes of a gzipped FileDescriptorProto
|
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|
||||
0xf3, 0x1b, 0x5a, 0xbb, 0x7d, 0x3d, 0x04, 0x0d, 0xa0, 0x29, 0xd8, 0x35, 0xd8, 0x4a, 0x85, 0x1e,
|
||||
0x17, 0x82, 0x53, 0x53, 0xfb, 0xd7, 0x68, 0x45, 0xb2, 0x4e, 0x1a, 0x1b, 0x0f, 0xb5, 0x38, 0xb6,
|
||||
0x5c, 0xaa, 0xca, 0xa7, 0x20, 0xc2, 0xea, 0x59, 0x66, 0x19, 0xca, 0xef, 0x23, 0xa8, 0xb3, 0x3c,
|
||||
0x5e, 0xbc, 0x2e, 0xb5, 0xbb, 0xeb, 0x88, 0xe2, 0x9d, 0xe6, 0x95, 0x84, 0x08, 0x3c, 0x28, 0x5e,
|
||||
0x41, 0xbe, 0xc0, 0xcf, 0x8b, 0x62, 0x3f, 0x6b, 0x5b, 0xcc, 0x2b, 0x09, 0xfd, 0x16, 0x76, 0xd7,
|
||||
0xde, 0xa5, 0x0c, 0x57, 0xd7, 0x3d, 0xd2, 0x19, 0xae, 0xae, 0x7d, 0xd6, 0x4e, 0x36, 0xd9, 0xa3,
|
||||
0xfc, 0xb3, 0xff, 0x07, 0x00, 0x00, 0xff, 0xff, 0xac, 0x6e, 0xf1, 0xeb, 0xc0, 0x13, 0x00, 0x00,
|
||||
}
|
||||
|
||||
// Reference imports to suppress errors if they are not otherwise used.
|
||||
@ -1340,6 +1693,7 @@ type SwapServerClient interface {
|
||||
LoopInQuote(ctx context.Context, in *ServerLoopInQuoteRequest, opts ...grpc.CallOption) (*ServerLoopInQuoteResponse, error)
|
||||
SubscribeLoopOutUpdates(ctx context.Context, in *SubscribeUpdatesRequest, opts ...grpc.CallOption) (SwapServer_SubscribeLoopOutUpdatesClient, error)
|
||||
SubscribeLoopInUpdates(ctx context.Context, in *SubscribeUpdatesRequest, opts ...grpc.CallOption) (SwapServer_SubscribeLoopInUpdatesClient, error)
|
||||
CancelLoopOutSwap(ctx context.Context, in *CancelLoopOutSwapRequest, opts ...grpc.CallOption) (*CancelLoopOutSwapResponse, error)
|
||||
}
|
||||
|
||||
type swapServerClient struct {
|
||||
@ -1477,6 +1831,15 @@ func (x *swapServerSubscribeLoopInUpdatesClient) Recv() (*SubscribeLoopInUpdates
|
||||
return m, nil
|
||||
}
|
||||
|
||||
func (c *swapServerClient) CancelLoopOutSwap(ctx context.Context, in *CancelLoopOutSwapRequest, opts ...grpc.CallOption) (*CancelLoopOutSwapResponse, error) {
|
||||
out := new(CancelLoopOutSwapResponse)
|
||||
err := c.cc.Invoke(ctx, "/looprpc.SwapServer/CancelLoopOutSwap", in, out, opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
// SwapServerServer is the server API for SwapServer service.
|
||||
type SwapServerServer interface {
|
||||
LoopOutTerms(context.Context, *ServerLoopOutTermsRequest) (*ServerLoopOutTerms, error)
|
||||
@ -1488,6 +1851,7 @@ type SwapServerServer interface {
|
||||
LoopInQuote(context.Context, *ServerLoopInQuoteRequest) (*ServerLoopInQuoteResponse, error)
|
||||
SubscribeLoopOutUpdates(*SubscribeUpdatesRequest, SwapServer_SubscribeLoopOutUpdatesServer) error
|
||||
SubscribeLoopInUpdates(*SubscribeUpdatesRequest, SwapServer_SubscribeLoopInUpdatesServer) error
|
||||
CancelLoopOutSwap(context.Context, *CancelLoopOutSwapRequest) (*CancelLoopOutSwapResponse, error)
|
||||
}
|
||||
|
||||
// UnimplementedSwapServerServer can be embedded to have forward compatible implementations.
|
||||
@ -1521,6 +1885,9 @@ func (*UnimplementedSwapServerServer) SubscribeLoopOutUpdates(req *SubscribeUpda
|
||||
func (*UnimplementedSwapServerServer) SubscribeLoopInUpdates(req *SubscribeUpdatesRequest, srv SwapServer_SubscribeLoopInUpdatesServer) error {
|
||||
return status.Errorf(codes.Unimplemented, "method SubscribeLoopInUpdates not implemented")
|
||||
}
|
||||
func (*UnimplementedSwapServerServer) CancelLoopOutSwap(ctx context.Context, req *CancelLoopOutSwapRequest) (*CancelLoopOutSwapResponse, error) {
|
||||
return nil, status.Errorf(codes.Unimplemented, "method CancelLoopOutSwap not implemented")
|
||||
}
|
||||
|
||||
func RegisterSwapServerServer(s *grpc.Server, srv SwapServerServer) {
|
||||
s.RegisterService(&_SwapServer_serviceDesc, srv)
|
||||
@ -1694,6 +2061,24 @@ func (x *swapServerSubscribeLoopInUpdatesServer) Send(m *SubscribeLoopInUpdatesR
|
||||
return x.ServerStream.SendMsg(m)
|
||||
}
|
||||
|
||||
func _SwapServer_CancelLoopOutSwap_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
|
||||
in := new(CancelLoopOutSwapRequest)
|
||||
if err := dec(in); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if interceptor == nil {
|
||||
return srv.(SwapServerServer).CancelLoopOutSwap(ctx, in)
|
||||
}
|
||||
info := &grpc.UnaryServerInfo{
|
||||
Server: srv,
|
||||
FullMethod: "/looprpc.SwapServer/CancelLoopOutSwap",
|
||||
}
|
||||
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
|
||||
return srv.(SwapServerServer).CancelLoopOutSwap(ctx, req.(*CancelLoopOutSwapRequest))
|
||||
}
|
||||
return interceptor(ctx, in, info, handler)
|
||||
}
|
||||
|
||||
var _SwapServer_serviceDesc = grpc.ServiceDesc{
|
||||
ServiceName: "looprpc.SwapServer",
|
||||
HandlerType: (*SwapServerServer)(nil),
|
||||
@ -1726,6 +2111,10 @@ var _SwapServer_serviceDesc = grpc.ServiceDesc{
|
||||
MethodName: "LoopInQuote",
|
||||
Handler: _SwapServer_LoopInQuote_Handler,
|
||||
},
|
||||
{
|
||||
MethodName: "CancelLoopOutSwap",
|
||||
Handler: _SwapServer_CancelLoopOutSwap_Handler,
|
||||
},
|
||||
},
|
||||
Streams: []grpc.StreamDesc{
|
||||
{
|
||||
|
||||
@ -26,6 +26,9 @@ service SwapServer {
|
||||
|
||||
rpc SubscribeLoopInUpdates (SubscribeUpdatesRequest)
|
||||
returns (stream SubscribeLoopInUpdatesResponse);
|
||||
|
||||
rpc CancelLoopOutSwap(CancelLoopOutSwapRequest)
|
||||
returns (CancelLoopOutSwapResponse);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -64,6 +67,9 @@ enum ProtocolVersion {
|
||||
// The client creates a probe invoice so that the server can perform a
|
||||
// multi-path probe.
|
||||
MULTI_LOOP_IN = 6;
|
||||
|
||||
// The client supports loop out swap cancelation.
|
||||
LOOP_OUT_CANCEL = 7;
|
||||
}
|
||||
|
||||
message ServerLoopOutRequest {
|
||||
@ -292,6 +298,14 @@ enum ServerSwapState {
|
||||
|
||||
// The swap htlc has confirmed on chain.
|
||||
HTLC_CONFIRMED = 12;
|
||||
|
||||
// The client canceled the swap because they could not route the prepay.
|
||||
CLIENT_PREPAY_CANCEL = 13;
|
||||
|
||||
// The client canceled the swap because they could not route the swap
|
||||
// payment.
|
||||
CLIENT_INVOICE_CANCEL = 14;
|
||||
|
||||
}
|
||||
|
||||
message SubscribeLoopOutUpdatesResponse{
|
||||
@ -309,3 +323,88 @@ message SubscribeLoopInUpdatesResponse{
|
||||
// The swap's current state.
|
||||
ServerSwapState state = 2;
|
||||
}
|
||||
|
||||
enum RoutePaymentType {
|
||||
// No reason, used to distinguish from the default value.
|
||||
UNKNOWN = 0;
|
||||
|
||||
// Prepay route indicates that the swap was canceled because the client
|
||||
// could not find a route to the server for the prepay.
|
||||
PREPAY_ROUTE = 1;
|
||||
|
||||
// Invoice route indicates that the swap was canceled because the client
|
||||
// could not find a route to the server for the swap invoice.
|
||||
INVOICE_ROUTE = 2;
|
||||
}
|
||||
|
||||
// PaymentFailureReason describes the reason that a payment failed. These
|
||||
// values are copied directly from lnd.
|
||||
enum PaymentFailureReason {
|
||||
/*
|
||||
Payment isn't failed (yet).
|
||||
*/
|
||||
FAILURE_REASON_NONE = 0;
|
||||
|
||||
/*
|
||||
There are more routes to try, but the payment timeout was exceeded.
|
||||
*/
|
||||
FAILURE_REASON_TIMEOUT = 1;
|
||||
|
||||
/*
|
||||
All possible routes were tried and failed permanently. Or were no
|
||||
routes to the destination at all.
|
||||
*/
|
||||
FAILURE_REASON_NO_ROUTE = 2;
|
||||
|
||||
/*
|
||||
A non-recoverable error has occured.
|
||||
*/
|
||||
FAILURE_REASON_ERROR = 3;
|
||||
|
||||
/*
|
||||
Payment details incorrect (unknown hash, invalid amt or
|
||||
invalid final cltv delta)
|
||||
*/
|
||||
FAILURE_REASON_INCORRECT_PAYMENT_DETAILS = 4;
|
||||
|
||||
/*
|
||||
Insufficient local balance.
|
||||
*/
|
||||
FAILURE_REASON_INSUFFICIENT_BALANCE = 5;
|
||||
}
|
||||
|
||||
message RouteCancel {
|
||||
// The type of the payment that failed.
|
||||
RoutePaymentType route_type = 1;
|
||||
|
||||
// The htlcs that the client tried to pay the server with, if any.
|
||||
repeated HtlcAttempt attempts = 2;
|
||||
|
||||
// The reason that the payment failed.
|
||||
PaymentFailureReason failure = 3;
|
||||
}
|
||||
|
||||
message HtlcAttempt {
|
||||
// The number of hops from the htlc's failure hop that it needed to take
|
||||
// to reach the server's node.
|
||||
uint32 remaining_hops = 1;
|
||||
}
|
||||
|
||||
message CancelLoopOutSwapRequest {
|
||||
// The protocol version that the client adheres to.
|
||||
ProtocolVersion protocol_version = 1;
|
||||
|
||||
// The swap hash.
|
||||
bytes swap_hash = 2;
|
||||
|
||||
// The payment address for the swap invoice, used to ensure that only the
|
||||
// swap owner can cancel the payment.
|
||||
bytes payment_address = 3;
|
||||
|
||||
// Additional information about the swap cancelation.
|
||||
oneof cancel_info {
|
||||
RouteCancel route_cancel = 5;
|
||||
}
|
||||
}
|
||||
|
||||
message CancelLoopOutSwapResponse{}
|
||||
|
||||
@ -15,6 +15,14 @@ This file tracks release notes for the loop client.
|
||||
## Next release
|
||||
|
||||
#### New Features
|
||||
- The loopd client reports off-chain routing failures for loop out swaps if
|
||||
it cannot find a route to the server for the swap's prepay or invoice payment.
|
||||
This allows the server to release accepted invoices, if there are any,
|
||||
earlier, reducing the amount of time that funds are held off-chain. If the
|
||||
swap failed on one of the loop server's channels, it will report failure
|
||||
location of its off-chain failure. If the failure occurred outside of the
|
||||
loop server's infrastructure, a generic failure will be used so that no
|
||||
information about the client's position in the network is leaked.
|
||||
|
||||
#### Breaking Changes
|
||||
|
||||
|
||||
@ -3,6 +3,7 @@ package loop
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"testing"
|
||||
|
||||
"time"
|
||||
|
||||
@ -15,6 +16,7 @@ import (
|
||||
"github.com/lightningnetwork/lnd/lnwire"
|
||||
"github.com/lightningnetwork/lnd/routing/route"
|
||||
"github.com/lightningnetwork/lnd/zpay32"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
var (
|
||||
@ -43,6 +45,9 @@ type serverMock struct {
|
||||
// preimagePush is a channel that preimage pushes are sent into.
|
||||
preimagePush chan lntypes.Preimage
|
||||
|
||||
// cancelSwap is a channel that swap cancelations are sent into.
|
||||
cancelSwap chan *outCancelDetails
|
||||
|
||||
lnd *test.LndMockServices
|
||||
}
|
||||
|
||||
@ -59,6 +64,7 @@ func newServerMock(lnd *test.LndMockServices) *serverMock {
|
||||
height: 600,
|
||||
|
||||
preimagePush: make(chan lntypes.Preimage),
|
||||
cancelSwap: make(chan *outCancelDetails),
|
||||
|
||||
lnd: lnd,
|
||||
}
|
||||
@ -120,10 +126,17 @@ func (s *serverMock) GetLoopOutQuote(ctx context.Context, amt btcutil.Amount,
|
||||
}
|
||||
|
||||
func getInvoice(hash lntypes.Hash, amt btcutil.Amount, memo string) (string, error) {
|
||||
// Set different payment addresses for swap invoices.
|
||||
payAddr := [32]byte{1, 2, 3}
|
||||
if memo == swapInvoiceDesc {
|
||||
payAddr = [32]byte{3, 2, 1}
|
||||
}
|
||||
|
||||
req, err := zpay32.NewInvoice(
|
||||
&chaincfg.TestNet3Params, hash, testTime,
|
||||
zpay32.Description(memo),
|
||||
zpay32.Amount(lnwire.MilliSatoshi(1000*amt)),
|
||||
zpay32.PaymentAddr(payAddr),
|
||||
)
|
||||
if err != nil {
|
||||
return "", err
|
||||
@ -178,6 +191,18 @@ func (s *serverMock) PushLoopOutPreimage(_ context.Context,
|
||||
return nil
|
||||
}
|
||||
|
||||
// CancelLoopOutSwap pushes a request to cancel a swap into our mock's channel.
|
||||
func (s *serverMock) CancelLoopOutSwap(ctx context.Context,
|
||||
details *outCancelDetails) error {
|
||||
|
||||
s.cancelSwap <- details
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *serverMock) assertSwapCanceled(t *testing.T, details *outCancelDetails) {
|
||||
require.Equal(t, details, <-s.cancelSwap)
|
||||
}
|
||||
|
||||
func (s *serverMock) GetLoopInTerms(ctx context.Context) (
|
||||
*LoopInTerms, error) {
|
||||
|
||||
|
||||
@ -17,6 +17,7 @@ import (
|
||||
"github.com/lightninglabs/aperture/lsat"
|
||||
"github.com/lightninglabs/loop/loopdb"
|
||||
"github.com/lightninglabs/loop/looprpc"
|
||||
"github.com/lightningnetwork/lnd/lnrpc"
|
||||
"github.com/lightningnetwork/lnd/lntypes"
|
||||
"github.com/lightningnetwork/lnd/routing/route"
|
||||
"github.com/lightningnetwork/lnd/tor"
|
||||
@ -74,6 +75,10 @@ type swapServerClient interface {
|
||||
// SubscribeLoopInUpdates subscribes to loop in server state.
|
||||
SubscribeLoopInUpdates(ctx context.Context,
|
||||
hash lntypes.Hash) (<-chan *ServerUpdate, <-chan error, error)
|
||||
|
||||
// CancelLoopOutSwap cancels a loop out swap.
|
||||
CancelLoopOutSwap(ctx context.Context,
|
||||
details *outCancelDetails) error
|
||||
}
|
||||
|
||||
type grpcSwapServerClient struct {
|
||||
@ -456,6 +461,104 @@ func (s *grpcSwapServerClient) makeServerUpdate(ctx context.Context,
|
||||
return updateChan, errChan
|
||||
}
|
||||
|
||||
// paymentType is an enum representing different types of off-chain payments
|
||||
// made by a swap.
|
||||
type paymentType uint8
|
||||
|
||||
const (
|
||||
// paymentTypePrepay indicates that we could not route the prepay.
|
||||
paymentTypePrepay paymentType = iota
|
||||
|
||||
// paymentTypeInvoice indicates that we could not route the swap
|
||||
// invoice.
|
||||
paymentTypeInvoice
|
||||
)
|
||||
|
||||
// routeCancelMetadata contains cancelation information for swaps that are
|
||||
// canceled because the client could not route off-chain to the server.
|
||||
type routeCancelMetadata struct {
|
||||
// paymentType is the type of payment that failed.
|
||||
paymentType paymentType
|
||||
|
||||
// attempts is the set of htlc attempts made by the client, reporting
|
||||
// the distance from the invoice's destination node that a failure
|
||||
// occurred.
|
||||
attempts []uint32
|
||||
|
||||
// failureReason is the reason that the payment failed.
|
||||
failureReason lnrpc.PaymentFailureReason
|
||||
}
|
||||
|
||||
// outCancelDetails contains the informaton required to cancel a loop out swap.
|
||||
type outCancelDetails struct {
|
||||
// Hash is the swap's hash.
|
||||
hash lntypes.Hash
|
||||
|
||||
// paymentAddr is the payment address for the swap's invoice.
|
||||
paymentAddr [32]byte
|
||||
|
||||
// metadata contains additional information about the swap.
|
||||
metadata routeCancelMetadata
|
||||
}
|
||||
|
||||
// CancelLoopOutSwap sends an instruction to the server to cancel a loop out
|
||||
// swap.
|
||||
func (s *grpcSwapServerClient) CancelLoopOutSwap(ctx context.Context,
|
||||
details *outCancelDetails) error {
|
||||
|
||||
req := &looprpc.CancelLoopOutSwapRequest{
|
||||
ProtocolVersion: loopdb.CurrentRPCProtocolVersion,
|
||||
SwapHash: details.hash[:],
|
||||
PaymentAddress: details.paymentAddr[:],
|
||||
}
|
||||
|
||||
var err error
|
||||
req.CancelInfo, err = rpcRouteCancel(details)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
_, err = s.server.CancelLoopOutSwap(ctx, req)
|
||||
return err
|
||||
}
|
||||
|
||||
func rpcRouteCancel(details *outCancelDetails) (
|
||||
*looprpc.CancelLoopOutSwapRequest_RouteCancel, error) {
|
||||
|
||||
attempts := make([]*looprpc.HtlcAttempt, len(details.metadata.attempts))
|
||||
for i, remaining := range details.metadata.attempts {
|
||||
attempts[i] = &looprpc.HtlcAttempt{
|
||||
RemainingHops: remaining,
|
||||
}
|
||||
}
|
||||
|
||||
resp := &looprpc.CancelLoopOutSwapRequest_RouteCancel{
|
||||
RouteCancel: &looprpc.RouteCancel{
|
||||
Attempts: attempts,
|
||||
// We can cast our lnd failure reason to a loop payment
|
||||
// failure reason because these values are copied 1:1
|
||||
// from lnd.
|
||||
Failure: looprpc.PaymentFailureReason(
|
||||
details.metadata.failureReason,
|
||||
),
|
||||
},
|
||||
}
|
||||
|
||||
switch details.metadata.paymentType {
|
||||
case paymentTypePrepay:
|
||||
resp.RouteCancel.RouteType = looprpc.RoutePaymentType_PREPAY_ROUTE
|
||||
|
||||
case paymentTypeInvoice:
|
||||
resp.RouteCancel.RouteType = looprpc.RoutePaymentType_INVOICE_ROUTE
|
||||
|
||||
default:
|
||||
return nil, fmt.Errorf("unknown payment type: %v",
|
||||
details.metadata.paymentType)
|
||||
}
|
||||
|
||||
return resp, nil
|
||||
}
|
||||
|
||||
// getSwapServerConn returns a connection to the swap server. A non-empty
|
||||
// proxyAddr indicates that a SOCKS proxy found at the address should be used to
|
||||
// establish the connection.
|
||||
|
||||
@ -52,6 +52,7 @@ func newSwapClient(config *clientConfig) *Client {
|
||||
store: config.Store,
|
||||
sweeper: sweeper,
|
||||
createExpiryTimer: config.CreateExpiryTimer,
|
||||
cancelSwap: config.Server.CancelLoopOutSwap,
|
||||
})
|
||||
|
||||
return &Client{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user