lnd.xprv/routing/mock_test.go

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