516 lines
10 KiB
Go
516 lines
10 KiB
Go
package routing
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import (
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"fmt"
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"sync"
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"github.com/go-errors/errors"
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"github.com/lightningnetwork/lnd/channeldb"
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"github.com/lightningnetwork/lnd/htlcswitch"
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"github.com/lightningnetwork/lnd/lntypes"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/routing/route"
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)
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type mockPaymentAttemptDispatcher struct {
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onPayment func(firstHop lnwire.ShortChannelID) ([32]byte, error)
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results map[uint64]*htlcswitch.PaymentResult
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sync.Mutex
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}
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var _ PaymentAttemptDispatcher = (*mockPaymentAttemptDispatcher)(nil)
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func (m *mockPaymentAttemptDispatcher) SendHTLC(firstHop lnwire.ShortChannelID,
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pid uint64,
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_ *lnwire.UpdateAddHTLC) error {
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if m.onPayment == nil {
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return nil
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}
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var result *htlcswitch.PaymentResult
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preimage, err := m.onPayment(firstHop)
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if err != nil {
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rtErr, ok := err.(htlcswitch.ClearTextError)
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if !ok {
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return err
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}
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result = &htlcswitch.PaymentResult{
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Error: rtErr,
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}
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} else {
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result = &htlcswitch.PaymentResult{Preimage: preimage}
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}
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m.Lock()
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if m.results == nil {
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m.results = make(map[uint64]*htlcswitch.PaymentResult)
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}
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m.results[pid] = result
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m.Unlock()
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return nil
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}
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func (m *mockPaymentAttemptDispatcher) GetPaymentResult(paymentID uint64,
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_ lntypes.Hash, _ htlcswitch.ErrorDecrypter) (
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<-chan *htlcswitch.PaymentResult, error) {
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c := make(chan *htlcswitch.PaymentResult, 1)
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m.Lock()
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res, ok := m.results[paymentID]
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m.Unlock()
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if !ok {
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return nil, htlcswitch.ErrPaymentIDNotFound
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}
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c <- res
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return c, nil
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}
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func (m *mockPaymentAttemptDispatcher) CleanStore(map[uint64]struct{}) error {
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return nil
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}
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func (m *mockPaymentAttemptDispatcher) setPaymentResult(
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f func(firstHop lnwire.ShortChannelID) ([32]byte, error)) {
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m.onPayment = f
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}
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type mockPaymentSessionSource struct {
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routes []*route.Route
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routeRelease chan struct{}
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}
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var _ PaymentSessionSource = (*mockPaymentSessionSource)(nil)
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func (m *mockPaymentSessionSource) NewPaymentSession(
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_ *LightningPayment) (PaymentSession, error) {
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return &mockPaymentSession{
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routes: m.routes,
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release: m.routeRelease,
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}, nil
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}
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func (m *mockPaymentSessionSource) NewPaymentSessionForRoute(
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preBuiltRoute *route.Route) PaymentSession {
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return nil
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}
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func (m *mockPaymentSessionSource) NewPaymentSessionEmpty() PaymentSession {
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return &mockPaymentSession{}
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}
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type mockMissionControl struct {
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MissionControl
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}
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var _ MissionController = (*mockMissionControl)(nil)
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func (m *mockMissionControl) ReportPaymentFail(paymentID uint64, rt *route.Route,
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failureSourceIdx *int, failure lnwire.FailureMessage) (
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*channeldb.FailureReason, error) {
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// Report a permanent failure if this is an error caused
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// by incorrect details.
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if failure.Code() == lnwire.CodeIncorrectOrUnknownPaymentDetails {
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reason := channeldb.FailureReasonPaymentDetails
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return &reason, nil
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}
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return nil, nil
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}
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func (m *mockMissionControl) ReportPaymentSuccess(paymentID uint64,
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rt *route.Route) error {
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return nil
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}
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func (m *mockMissionControl) GetProbability(fromNode, toNode route.Vertex,
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amt lnwire.MilliSatoshi) float64 {
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return 0
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}
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type mockPaymentSession struct {
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routes []*route.Route
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// release is a channel that optionally blocks requesting a route
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// from our mock payment channel. If this value is nil, we will just
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// release the route automatically.
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release chan struct{}
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}
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var _ PaymentSession = (*mockPaymentSession)(nil)
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func (m *mockPaymentSession) RequestRoute(_, _ lnwire.MilliSatoshi,
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_, height uint32) (*route.Route, error) {
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if m.release != nil {
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m.release <- struct{}{}
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}
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if len(m.routes) == 0 {
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return nil, errNoPathFound
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}
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r := m.routes[0]
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m.routes = m.routes[1:]
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return r, nil
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}
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type mockPayer struct {
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sendResult chan error
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paymentResult chan *htlcswitch.PaymentResult
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quit chan struct{}
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}
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var _ PaymentAttemptDispatcher = (*mockPayer)(nil)
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func (m *mockPayer) SendHTLC(_ lnwire.ShortChannelID,
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paymentID uint64,
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_ *lnwire.UpdateAddHTLC) error {
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select {
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case res := <-m.sendResult:
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return res
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case <-m.quit:
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return fmt.Errorf("test quitting")
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}
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}
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func (m *mockPayer) GetPaymentResult(paymentID uint64, _ lntypes.Hash,
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_ htlcswitch.ErrorDecrypter) (<-chan *htlcswitch.PaymentResult, error) {
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select {
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case res, ok := <-m.paymentResult:
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resChan := make(chan *htlcswitch.PaymentResult, 1)
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if !ok {
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close(resChan)
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} else {
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resChan <- res
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}
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return resChan, nil
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case <-m.quit:
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return nil, fmt.Errorf("test quitting")
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}
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}
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func (m *mockPayer) CleanStore(pids map[uint64]struct{}) error {
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return nil
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}
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type initArgs struct {
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c *channeldb.PaymentCreationInfo
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}
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type registerAttemptArgs struct {
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a *channeldb.HTLCAttemptInfo
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}
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type settleAttemptArgs struct {
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preimg lntypes.Preimage
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}
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type failAttemptArgs struct {
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reason *channeldb.HTLCFailInfo
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}
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type failPaymentArgs struct {
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reason channeldb.FailureReason
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}
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type testPayment struct {
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info channeldb.PaymentCreationInfo
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attempts []channeldb.HTLCAttempt
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}
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type mockControlTower struct {
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payments map[lntypes.Hash]*testPayment
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successful map[lntypes.Hash]struct{}
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failed map[lntypes.Hash]channeldb.FailureReason
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init chan initArgs
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registerAttempt chan registerAttemptArgs
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settleAttempt chan settleAttemptArgs
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failAttempt chan failAttemptArgs
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failPayment chan failPaymentArgs
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fetchInFlight chan struct{}
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sync.Mutex
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}
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var _ ControlTower = (*mockControlTower)(nil)
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func makeMockControlTower() *mockControlTower {
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return &mockControlTower{
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payments: make(map[lntypes.Hash]*testPayment),
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successful: make(map[lntypes.Hash]struct{}),
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failed: make(map[lntypes.Hash]channeldb.FailureReason),
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}
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}
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func (m *mockControlTower) InitPayment(phash lntypes.Hash,
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c *channeldb.PaymentCreationInfo) error {
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if m.init != nil {
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m.init <- initArgs{c}
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}
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m.Lock()
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defer m.Unlock()
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// Don't allow re-init a successful payment.
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if _, ok := m.successful[phash]; ok {
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return channeldb.ErrAlreadyPaid
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}
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_, failed := m.failed[phash]
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_, ok := m.payments[phash]
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// If the payment is known, only allow re-init if failed.
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if ok && !failed {
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return channeldb.ErrPaymentInFlight
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}
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delete(m.failed, phash)
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m.payments[phash] = &testPayment{
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info: *c,
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}
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return nil
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}
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func (m *mockControlTower) RegisterAttempt(phash lntypes.Hash,
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a *channeldb.HTLCAttemptInfo) error {
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if m.registerAttempt != nil {
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m.registerAttempt <- registerAttemptArgs{a}
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}
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m.Lock()
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defer m.Unlock()
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// Lookup payment.
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p, ok := m.payments[phash]
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if !ok {
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return channeldb.ErrPaymentNotInitiated
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}
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var inFlight bool
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for _, a := range p.attempts {
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if a.Settle != nil {
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continue
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}
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if a.Failure != nil {
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continue
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}
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inFlight = true
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}
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// Cannot register attempts for successful or failed payments.
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_, settled := m.successful[phash]
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_, failed := m.failed[phash]
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if settled || failed {
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return channeldb.ErrPaymentTerminal
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}
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if settled && !inFlight {
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return channeldb.ErrPaymentAlreadySucceeded
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}
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if failed && !inFlight {
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return channeldb.ErrPaymentAlreadyFailed
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}
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// Add attempt to payment.
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p.attempts = append(p.attempts, channeldb.HTLCAttempt{
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HTLCAttemptInfo: *a,
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})
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m.payments[phash] = p
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return nil
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}
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func (m *mockControlTower) SettleAttempt(phash lntypes.Hash,
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pid uint64, settleInfo *channeldb.HTLCSettleInfo) (
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*channeldb.HTLCAttempt, error) {
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if m.settleAttempt != nil {
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m.settleAttempt <- settleAttemptArgs{settleInfo.Preimage}
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}
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m.Lock()
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defer m.Unlock()
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// Only allow setting attempts if the payment is known.
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p, ok := m.payments[phash]
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if !ok {
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return nil, channeldb.ErrPaymentNotInitiated
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}
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// Find the attempt with this pid, and set the settle info.
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for i, a := range p.attempts {
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if a.AttemptID != pid {
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continue
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}
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if a.Settle != nil {
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return nil, channeldb.ErrAttemptAlreadySettled
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}
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if a.Failure != nil {
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return nil, channeldb.ErrAttemptAlreadyFailed
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}
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p.attempts[i].Settle = settleInfo
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// Mark the payment successful on first settled attempt.
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m.successful[phash] = struct{}{}
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return &channeldb.HTLCAttempt{
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Settle: settleInfo,
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}, nil
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}
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return nil, fmt.Errorf("pid not found")
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}
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func (m *mockControlTower) FailAttempt(phash lntypes.Hash, pid uint64,
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failInfo *channeldb.HTLCFailInfo) (*channeldb.HTLCAttempt, error) {
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if m.failAttempt != nil {
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m.failAttempt <- failAttemptArgs{failInfo}
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}
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m.Lock()
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defer m.Unlock()
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// Only allow failing attempts if the payment is known.
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p, ok := m.payments[phash]
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if !ok {
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return nil, channeldb.ErrPaymentNotInitiated
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}
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// Find the attempt with this pid, and set the failure info.
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for i, a := range p.attempts {
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if a.AttemptID != pid {
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continue
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}
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if a.Settle != nil {
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return nil, channeldb.ErrAttemptAlreadySettled
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}
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if a.Failure != nil {
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return nil, channeldb.ErrAttemptAlreadyFailed
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}
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p.attempts[i].Failure = failInfo
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return &channeldb.HTLCAttempt{
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Failure: failInfo,
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}, nil
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}
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return nil, fmt.Errorf("pid not found")
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}
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func (m *mockControlTower) Fail(phash lntypes.Hash,
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reason channeldb.FailureReason) error {
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m.Lock()
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defer m.Unlock()
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if m.failPayment != nil {
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m.failPayment <- failPaymentArgs{reason}
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}
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// Payment must be known.
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if _, ok := m.payments[phash]; !ok {
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return channeldb.ErrPaymentNotInitiated
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}
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m.failed[phash] = reason
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return nil
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}
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func (m *mockControlTower) FetchPayment(phash lntypes.Hash) (
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*channeldb.MPPayment, error) {
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m.Lock()
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defer m.Unlock()
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return m.fetchPayment(phash)
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}
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func (m *mockControlTower) fetchPayment(phash lntypes.Hash) (
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*channeldb.MPPayment, error) {
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p, ok := m.payments[phash]
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if !ok {
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return nil, channeldb.ErrPaymentNotInitiated
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}
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mp := &channeldb.MPPayment{
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Info: &p.info,
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}
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reason, ok := m.failed[phash]
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if ok {
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mp.FailureReason = &reason
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}
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// Return a copy of the current attempts.
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mp.HTLCs = append(mp.HTLCs, p.attempts...)
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return mp, nil
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}
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func (m *mockControlTower) FetchInFlightPayments() (
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[]*channeldb.MPPayment, error) {
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if m.fetchInFlight != nil {
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m.fetchInFlight <- struct{}{}
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}
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m.Lock()
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defer m.Unlock()
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// In flight are all payments not successful or failed.
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var fl []*channeldb.MPPayment
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for hash := range m.payments {
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if _, ok := m.successful[hash]; ok {
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continue
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}
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if _, ok := m.failed[hash]; ok {
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continue
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}
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mp, err := m.fetchPayment(hash)
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if err != nil {
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return nil, err
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}
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fl = append(fl, mp)
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}
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return fl, nil
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}
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func (m *mockControlTower) SubscribePayment(paymentHash lntypes.Hash) (
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*ControlTowerSubscriber, error) {
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return nil, errors.New("not implemented")
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}
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