router+switch: rename paymentID->attemptID
To distinguish the attempt's unique ID from the overall payment identifier, we name it attemptID everywhere, and note that the paymentHash argument won't be the actual payment hash for AMP payments.
This commit is contained in:
Johan T. Halseth
parent
7795353e9f
commit
a9f19b100b
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@ -363,12 +363,15 @@ func (s *Switch) ProcessContractResolution(msg contractcourt.ResolutionMsg) erro
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}
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// GetPaymentResult returns the the result of the payment attempt with the
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// given paymentID. The method returns a channel where the payment result will
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// be sent when available, or an error is encountered during forwarding. When a
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// result is received on the channel, the HTLC is guaranteed to no longer be in
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// flight. The switch shutting down is signaled by closing the channel. If the
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// paymentID is unknown, ErrPaymentIDNotFound will be returned.
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func (s *Switch) GetPaymentResult(paymentID uint64, paymentHash lntypes.Hash,
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// given attemptID. The paymentHash should be set to the payment's overall
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// hash, or in case of AMP payments the payment's unique identifier.
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//
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// The method returns a channel where the payment result will be sent when
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// available, or an error is encountered during forwarding. When a result is
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// received on the channel, the HTLC is guaranteed to no longer be in flight.
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// The switch shutting down is signaled by closing the channel. If the
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// attemptID is unknown, ErrPaymentIDNotFound will be returned.
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func (s *Switch) GetPaymentResult(attemptID uint64, paymentHash lntypes.Hash,
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deobfuscator ErrorDecrypter) (<-chan *PaymentResult, error) {
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var (
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@ -376,7 +379,7 @@ func (s *Switch) GetPaymentResult(paymentID uint64, paymentHash lntypes.Hash,
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err error
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outKey = CircuitKey{
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ChanID: hop.Source,
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HtlcID: paymentID,
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HtlcID: attemptID,
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}
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)
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@ -384,7 +387,7 @@ func (s *Switch) GetPaymentResult(paymentID uint64, paymentHash lntypes.Hash,
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// result is already available.
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// Assumption: no one will add this payment ID other than the caller.
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if s.circuits.LookupCircuit(outKey) == nil {
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res, err := s.networkResults.getResult(paymentID)
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res, err := s.networkResults.getResult(attemptID)
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if err != nil {
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return nil, err
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}
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@ -394,7 +397,7 @@ func (s *Switch) GetPaymentResult(paymentID uint64, paymentHash lntypes.Hash,
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} else {
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// The payment was committed to the circuits, subscribe for a
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// result.
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nChan, err = s.networkResults.subscribeResult(paymentID)
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nChan, err = s.networkResults.subscribeResult(attemptID)
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if err != nil {
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return nil, err
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}
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@ -420,12 +423,12 @@ func (s *Switch) GetPaymentResult(paymentID uint64, paymentHash lntypes.Hash,
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return
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}
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log.Debugf("Received network result %T for paymentID=%v", n.msg,
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paymentID)
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log.Debugf("Received network result %T for attemptID=%v", n.msg,
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attemptID)
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// Extract the result and pass it to the result channel.
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result, err := s.extractResult(
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deobfuscator, n, paymentID, paymentHash,
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deobfuscator, n, attemptID, paymentHash,
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)
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if err != nil {
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e := fmt.Errorf("unable to extract result: %v", err)
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@ -450,10 +453,10 @@ func (s *Switch) CleanStore(keepPids map[uint64]struct{}) error {
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}
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// SendHTLC is used by other subsystems which aren't belong to htlc switch
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// package in order to send the htlc update. The paymentID used MUST be unique
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// package in order to send the htlc update. The attemptID used MUST be unique
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// for this HTLC, and MUST be used only once, otherwise the switch might reject
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// it.
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func (s *Switch) SendHTLC(firstHop lnwire.ShortChannelID, paymentID uint64,
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func (s *Switch) SendHTLC(firstHop lnwire.ShortChannelID, attemptID uint64,
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htlc *lnwire.UpdateAddHTLC) error {
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// Generate and send new update packet, if error will be received on
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@ -461,7 +464,7 @@ func (s *Switch) SendHTLC(firstHop lnwire.ShortChannelID, paymentID uint64,
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// system and something wrong happened.
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packet := &htlcPacket{
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incomingChanID: hop.Source,
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incomingHTLCID: paymentID,
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incomingHTLCID: attemptID,
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outgoingChanID: firstHop,
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htlc: htlc,
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}
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@ -794,7 +797,7 @@ func (s *Switch) getLocalLink(pkt *htlcPacket, htlc *lnwire.UpdateAddHTLC) (
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func (s *Switch) handleLocalResponse(pkt *htlcPacket) {
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defer s.wg.Done()
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paymentID := pkt.incomingHTLCID
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attemptID := pkt.incomingHTLCID
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// The error reason will be unencypted in case this a local
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// failure or a converted error.
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@ -807,9 +810,9 @@ func (s *Switch) handleLocalResponse(pkt *htlcPacket) {
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// Store the result to the db. This will also notify subscribers about
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// the result.
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if err := s.networkResults.storeResult(paymentID, n); err != nil {
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if err := s.networkResults.storeResult(attemptID, n); err != nil {
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log.Errorf("Unable to complete payment for pid=%v: %v",
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paymentID, err)
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attemptID, err)
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return
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}
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@ -857,7 +860,7 @@ func (s *Switch) handleLocalResponse(pkt *htlcPacket) {
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// extractResult uses the given deobfuscator to extract the payment result from
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// the given network message.
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func (s *Switch) extractResult(deobfuscator ErrorDecrypter, n *networkResult,
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paymentID uint64, paymentHash lntypes.Hash) (*PaymentResult, error) {
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attemptID uint64, paymentHash lntypes.Hash) (*PaymentResult, error) {
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switch htlc := n.msg.(type) {
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@ -872,7 +875,7 @@ func (s *Switch) extractResult(deobfuscator ErrorDecrypter, n *networkResult,
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// user payment and return fail response.
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case *lnwire.UpdateFailHTLC:
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paymentErr := s.parseFailedPayment(
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deobfuscator, paymentID, paymentHash, n.unencrypted,
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deobfuscator, attemptID, paymentHash, n.unencrypted,
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n.isResolution, htlc,
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)
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@ -894,7 +897,7 @@ func (s *Switch) extractResult(deobfuscator ErrorDecrypter, n *networkResult,
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// 3) A failure from the remote party, which will need to be decrypted using
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// the payment deobfuscator.
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func (s *Switch) parseFailedPayment(deobfuscator ErrorDecrypter,
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paymentID uint64, paymentHash lntypes.Hash, unencrypted,
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attemptID uint64, paymentHash lntypes.Hash, unencrypted,
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isResolution bool, htlc *lnwire.UpdateFailHTLC) error {
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switch {
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@ -918,7 +921,7 @@ func (s *Switch) parseFailedPayment(deobfuscator ErrorDecrypter,
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log.Errorf("%v: (hash=%v, pid=%d): %v",
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linkError.FailureDetail.FailureString(),
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paymentHash, paymentID, err)
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paymentHash, attemptID, err)
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return linkError
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}
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@ -938,7 +941,7 @@ func (s *Switch) parseFailedPayment(deobfuscator ErrorDecrypter,
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log.Infof("%v: hash=%v, pid=%d",
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linkError.FailureDetail.FailureString(),
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paymentHash, paymentID)
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paymentHash, attemptID)
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return linkError
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@ -951,7 +954,7 @@ func (s *Switch) parseFailedPayment(deobfuscator ErrorDecrypter,
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if err != nil {
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log.Errorf("unable to de-obfuscate onion failure "+
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"(hash=%v, pid=%d): %v",
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paymentHash, paymentID, err)
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paymentHash, attemptID, err)
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return ErrUnreadableFailureMessage
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}
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@ -165,17 +165,21 @@ type PaymentAttemptDispatcher interface {
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// denoted by its public key. A non-nil error is to be returned if the
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// payment was unsuccessful.
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SendHTLC(firstHop lnwire.ShortChannelID,
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paymentID uint64,
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attemptID uint64,
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htlcAdd *lnwire.UpdateAddHTLC) error
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// GetPaymentResult returns the the result of the payment attempt with
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// the given paymentID. The method returns a channel where the payment
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// result will be sent when available, or an error is encountered
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// during forwarding. When a result is received on the channel, the
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// HTLC is guaranteed to no longer be in flight. The switch shutting
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// down is signaled by closing the channel. If the paymentID is
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// unknown, ErrPaymentIDNotFound will be returned.
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GetPaymentResult(paymentID uint64, paymentHash lntypes.Hash,
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// the given attemptID. The paymentHash should be set to the payment's
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// overall hash, or in case of AMP payments the payment's unique
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// identifier.
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//
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// The method returns a channel where the payment result will be sent
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// when available, or an error is encountered during forwarding. When a
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// result is received on the channel, the HTLC is guaranteed to no
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// longer be in flight. The switch shutting down is signaled by
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// closing the channel. If the attemptID is unknown,
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// ErrPaymentIDNotFound will be returned.
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GetPaymentResult(attemptID uint64, paymentHash lntypes.Hash,
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deobfuscator htlcswitch.ErrorDecrypter) (
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<-chan *htlcswitch.PaymentResult, error)
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@ -211,13 +215,13 @@ type MissionController interface {
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// input for future probability estimates. It returns a bool indicating
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// whether this error is a final error and no further payment attempts
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// need to be made.
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ReportPaymentFail(paymentID uint64, rt *route.Route,
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ReportPaymentFail(attemptID uint64, rt *route.Route,
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failureSourceIdx *int, failure lnwire.FailureMessage) (
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*channeldb.FailureReason, error)
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// ReportPaymentSuccess reports a successful payment to mission control as input
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// for future probability estimates.
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ReportPaymentSuccess(paymentID uint64, rt *route.Route) error
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ReportPaymentSuccess(attemptID uint64, rt *route.Route) error
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// GetProbability is expected to return the success probability of a
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// payment from fromNode along edge.
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@ -2081,7 +2085,7 @@ func (r *ChannelRouter) tryApplyChannelUpdate(rt *route.Route,
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// error type, this error is either the final outcome of the payment or we need
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// to continue with an alternative route. A final outcome is indicated by a
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// non-nil return value.
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func (r *ChannelRouter) processSendError(paymentID uint64, rt *route.Route,
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func (r *ChannelRouter) processSendError(attemptID uint64, rt *route.Route,
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sendErr error) *channeldb.FailureReason {
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internalErrorReason := channeldb.FailureReasonError
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@ -2091,7 +2095,7 @@ func (r *ChannelRouter) processSendError(paymentID uint64, rt *route.Route,
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// Report outcome to mission control.
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reason, err := r.cfg.MissionControl.ReportPaymentFail(
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paymentID, rt, srcIdx, msg,
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attemptID, rt, srcIdx, msg,
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)
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if err != nil {
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log.Errorf("Error reporting payment result to mc: %v",
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