Add tlv stream to onion failures

Extend every onion failure with an optional tlv stream.

See the specification here: lightning/bolts#1021

eclair-core/src/main/scala/fr/acinq/eclair/channel/fsm/Channel.scala

@@ -877,11 +877,11 @@ class Channel(val nodeParams: NodeParams, val wallet: OnChainChannelFunder, val
  case PostRevocationAction.RelayHtlc(add) =>
  // BOLT 2: A sending node SHOULD fail to route any HTLC added after it sent shutdown.
  log.debug("closing in progress: failing {}", add)
- self ! CMD_FAIL_HTLC(add.id, Right(PermanentChannelFailure), commit = true)
+ self ! CMD_FAIL_HTLC(add.id, Right(PermanentChannelFailure()), commit = true)
  case PostRevocationAction.RejectHtlc(add) =>
  // BOLT 2: A sending node SHOULD fail to route any HTLC added after it sent shutdown.
  log.debug("closing in progress: rejecting {}", add)
- self ! CMD_FAIL_HTLC(add.id, Right(PermanentChannelFailure), commit = true)
+ self ! CMD_FAIL_HTLC(add.id, Right(PermanentChannelFailure()), commit = true)
  case PostRevocationAction.RelayFailure(result) =>
  log.debug("forwarding {} to relayer", result)
  relayer ! result

eclair-core/src/main/scala/fr/acinq/eclair/payment/receive/MultiPartPaymentFSM.scala

@@ -50,7 +50,7 @@ class MultiPartPaymentFSM(nodeParams: NodeParams, paymentHash: ByteVector32, tot
  when(WAITING_FOR_HTLC) {
  case Event(PaymentTimeout, d: WaitingForHtlc) =>
  log.warning("multi-part payment timed out (received {} expected {})", d.paidAmount, totalAmount)
- goto(PAYMENT_FAILED) using PaymentFailed(protocol.PaymentTimeout, d.parts)
+ goto(PAYMENT_FAILED) using PaymentFailed(protocol.PaymentTimeout(), d.parts)
 
  case Event(part: PaymentPart, d: WaitingForHtlc) =>
  require(part.paymentHash == paymentHash, s"invalid payment hash (expected $paymentHash, received ${part.paymentHash}")

eclair-core/src/main/scala/fr/acinq/eclair/payment/relay/ChannelRelay.scala

@@ -70,16 +70,16 @@ object ChannelRelay {
  def translateLocalError(error: Throwable, channelUpdate_opt: Option[ChannelUpdate]): FailureMessage = {
  (error, channelUpdate_opt) match {
  case (_: ExpiryTooSmall, Some(channelUpdate)) => ExpiryTooSoon(channelUpdate)
- case (_: ExpiryTooBig, _) => ExpiryTooFar
+ case (_: ExpiryTooBig, _) => ExpiryTooFar()
  case (_: InsufficientFunds, Some(channelUpdate)) => TemporaryChannelFailure(channelUpdate)
  case (_: TooManyAcceptedHtlcs, Some(channelUpdate)) => TemporaryChannelFailure(channelUpdate)
  case (_: HtlcValueTooHighInFlight, Some(channelUpdate)) => TemporaryChannelFailure(channelUpdate)
  case (_: LocalDustHtlcExposureTooHigh, Some(channelUpdate)) => TemporaryChannelFailure(channelUpdate)
  case (_: RemoteDustHtlcExposureTooHigh, Some(channelUpdate)) => TemporaryChannelFailure(channelUpdate)
  case (_: FeerateTooDifferent, Some(channelUpdate)) => TemporaryChannelFailure(channelUpdate)
  case (_: ChannelUnavailable, Some(channelUpdate)) if !channelUpdate.channelFlags.isEnabled => ChannelDisabled(channelUpdate.messageFlags, channelUpdate.channelFlags, channelUpdate)
- case (_: ChannelUnavailable, None) => PermanentChannelFailure
- case _ => TemporaryNodeFailure
+ case (_: ChannelUnavailable, None) => PermanentChannelFailure()
+ case _ => TemporaryNodeFailure()
  }
  }
 
@@ -98,8 +98,8 @@ object ChannelRelay {
  case _ =>
  CMD_FAIL_MALFORMED_HTLC(originHtlcId, f.fail.onionHash, f.fail.failureCode, commit = true)
  }
- case _: HtlcResult.OnChainFail => CMD_FAIL_HTLC(originHtlcId, Right(PermanentChannelFailure), commit = true)
- case HtlcResult.ChannelFailureBeforeSigned => CMD_FAIL_HTLC(originHtlcId, Right(PermanentChannelFailure), commit = true)
+ case _: HtlcResult.OnChainFail => CMD_FAIL_HTLC(originHtlcId, Right(PermanentChannelFailure()), commit = true)
+ case HtlcResult.ChannelFailureBeforeSigned => CMD_FAIL_HTLC(originHtlcId, Right(PermanentChannelFailure()), commit = true)
  case f: HtlcResult.DisconnectedBeforeSigned => CMD_FAIL_HTLC(originHtlcId, Right(TemporaryChannelFailure(f.channelUpdate)), commit = true)
  }
  }
@@ -146,7 +146,7 @@ class ChannelRelay private(nodeParams: NodeParams,
  Behaviors.receiveMessagePartial {
  case WrappedForwardFailure(Register.ForwardFailure(Register.Forward(_, channelId, CMD_ADD_HTLC(_, _, _, _, _, _, o: Origin.ChannelRelayedHot, _)))) =>
  context.log.warn(s"couldn't resolve downstream channel $channelId, failing htlc #${o.add.id}")
- val cmdFail = CMD_FAIL_HTLC(o.add.id, Right(UnknownNextPeer), commit = true)
+ val cmdFail = CMD_FAIL_HTLC(o.add.id, Right(UnknownNextPeer()), commit = true)
  Metrics.recordPaymentRelayFailed(Tags.FailureType(cmdFail), Tags.RelayType.Channel)
  safeSendAndStop(o.add.channelId, cmdFail)
 
@@ -280,7 +280,7 @@ class ChannelRelay private(nodeParams: NodeParams,
  def relayOrFail(outgoingChannel_opt: Option[OutgoingChannelParams]): RelayResult = {
  outgoingChannel_opt match {
  case None =>
- RelayFailure(CMD_FAIL_HTLC(r.add.id, Right(UnknownNextPeer), commit = true))
+ RelayFailure(CMD_FAIL_HTLC(r.add.id, Right(UnknownNextPeer()), commit = true))
  case Some(c) if !c.channelUpdate.channelFlags.isEnabled =>
  RelayFailure(CMD_FAIL_HTLC(r.add.id, Right(ChannelDisabled(c.channelUpdate.messageFlags, c.channelUpdate.channelFlags, c.channelUpdate)), commit = true))
  case Some(c) if r.amountToForward < c.channelUpdate.htlcMinimumMsat =>

eclair-core/src/main/scala/fr/acinq/eclair/payment/relay/NodeRelay.scala

@@ -110,11 +110,11 @@ object NodeRelay {
  def validateRelay(nodeParams: NodeParams, upstream: Upstream.Trampoline, payloadOut: IntermediatePayload.NodeRelay.Standard): Option[FailureMessage] = {
  val fee = nodeFee(nodeParams.relayParams.minTrampolineFees, payloadOut.amountToForward)
  if (upstream.amountIn - payloadOut.amountToForward < fee) {
- Some(TrampolineFeeInsufficient)
+ Some(TrampolineFeeInsufficient())
  } else if (upstream.expiryIn - payloadOut.outgoingCltv < nodeParams.channelConf.expiryDelta) {
- Some(TrampolineExpiryTooSoon)
+ Some(TrampolineExpiryTooSoon())
  } else if (payloadOut.outgoingCltv <= CltvExpiry(nodeParams.currentBlockHeight)) {
- Some(TrampolineExpiryTooSoon)
+ Some(TrampolineExpiryTooSoon())
  } else if (payloadOut.invoiceFeatures.isDefined && payloadOut.paymentSecret.isEmpty) {
  Some(InvalidOnionPayload(UInt64(8), 0)) // payment secret field is missing
  } else if (payloadOut.amountToForward <= MilliSatoshi(0)) {
@@ -146,14 +146,14 @@ object NodeRelay {
  // We have direct channels to the target node, but not enough outgoing liquidity to use those channels.
  // The routing fee proposed by the sender was high enough to find alternative, indirect routes, but didn't yield
  // any result so we tell them that we don't have enough outgoing liquidity at the moment.
- Some(TemporaryNodeFailure)
- case LocalFailure(_, _, BalanceTooLow) :: Nil => Some(TrampolineFeeInsufficient) // a higher fee/cltv may find alternative, indirect routes
- case _ if routeNotFound => Some(TrampolineFeeInsufficient) // if we couldn't find routes, it's likely that the fee/cltv was insufficient
+ Some(TemporaryNodeFailure())
+ case LocalFailure(_, _, BalanceTooLow) :: Nil => Some(TrampolineFeeInsufficient()) // a higher fee/cltv may find alternative, indirect routes
+ case _ if routeNotFound => Some(TrampolineFeeInsufficient()) // if we couldn't find routes, it's likely that the fee/cltv was insufficient
  case _ =>
  // Otherwise, we try to find a downstream error that we could decrypt.
  val outgoingNodeFailure = failures.collectFirst { case RemoteFailure(_, _, e) if e.originNode == nextPayload.outgoingNodeId => e.failureMessage }
  val otherNodeFailure = failures.collectFirst { case RemoteFailure(_, _, e) => e.failureMessage }
- val failure = outgoingNodeFailure.getOrElse(otherNodeFailure.getOrElse(TemporaryNodeFailure))
+ val failure = outgoingNodeFailure.getOrElse(otherNodeFailure.getOrElse(TemporaryNodeFailure()))
  Some(failure)
  }
  }
@@ -226,17 +226,17 @@ class NodeRelay private(nodeParams: NodeParams,
  Behaviors.receiveMessagePartial {
  case WrappedCurrentBlockHeight(blockHeight) if blockHeight >= safetyBlock =>
  context.log.warn(s"rejecting async payment at block $blockHeight; was not triggered ${nodeParams.relayParams.asyncPaymentsParams.cancelSafetyBeforeTimeout} safety blocks before upstream cltv expiry at ${upstream.expiryIn}")
- rejectPayment(upstream, Some(TemporaryNodeFailure)) // TODO: replace failure type when async payment spec is finalized
+ rejectPayment(upstream, Some(TemporaryNodeFailure())) // TODO: replace failure type when async payment spec is finalized
  stopping()
  case WrappedCurrentBlockHeight(blockHeight) if blockHeight >= timeoutBlock =>
  context.log.warn(s"rejecting async payment at block $blockHeight; was not triggered after waiting ${nodeParams.relayParams.asyncPaymentsParams.holdTimeoutBlocks} blocks")
- rejectPayment(upstream, Some(TemporaryNodeFailure)) // TODO: replace failure type when async payment spec is finalized
+ rejectPayment(upstream, Some(TemporaryNodeFailure())) // TODO: replace failure type when async payment spec is finalized
  stopping()
- case WrappedCurrentBlockHeight(_) =>
+ case _: WrappedCurrentBlockHeight =>
  Behaviors.same
  case CancelAsyncPayment =>
  context.log.warn(s"payment sender canceled a waiting async payment")
- rejectPayment(upstream, Some(TemporaryNodeFailure)) // TODO: replace failure type when async payment spec is finalized
+ rejectPayment(upstream, Some(TemporaryNodeFailure())) // TODO: replace failure type when async payment spec is finalized
  stopping()
  case RelayAsyncPayment =>
  doSend(upstream, nextPayload, nextPacket)

eclair-core/src/main/scala/fr/acinq/eclair/payment/relay/PostRestartHtlcCleaner.scala

@@ -116,7 +116,7 @@ class PostRestartHtlcCleaner(nodeParams: NodeParams, register: ActorRef, initial
  Metrics.Resolved.withTag(Tags.Success, value = false).withTag(Metrics.Relayed, value = false).increment()
  if (e.currentState != CLOSING && e.currentState != CLOSED) {
  log.info(s"failing not relayed htlc=$htlc")
- channel ! CMD_FAIL_HTLC(htlc.id, Right(TemporaryNodeFailure), commit = true)
+ channel ! CMD_FAIL_HTLC(htlc.id, Right(TemporaryNodeFailure()), commit = true)
  } else {
  log.info(s"would fail but upstream channel is closed for htlc=$htlc")
  }
@@ -243,7 +243,7 @@ class PostRestartHtlcCleaner(nodeParams: NodeParams, register: ActorRef, initial
  Metrics.Resolved.withTag(Tags.Success, value = false).withTag(Metrics.Relayed, value = true).increment()
  // We don't bother decrypting the downstream failure to forward a more meaningful error upstream, it's
  // very likely that it won't be actionable anyway because of our node restart.
- PendingCommandsDb.safeSend(register, nodeParams.db.pendingCommands, channelId, CMD_FAIL_HTLC(htlcId, Right(TemporaryNodeFailure), commit = true))
+ PendingCommandsDb.safeSend(register, nodeParams.db.pendingCommands, channelId, CMD_FAIL_HTLC(htlcId, Right(TemporaryNodeFailure()), commit = true))
  }
  }
  }

eclair-core/src/main/scala/fr/acinq/eclair/payment/relay/Relayer.scala

@@ -72,7 +72,7 @@ class Relayer(nodeParams: NodeParams, router: ActorRef, register: ActorRef, paym
  case Right(r: IncomingPaymentPacket.NodeRelayPacket) =>
  if (!nodeParams.enableTrampolinePayment) {
  log.warning(s"rejecting htlc #${add.id} from channelId=${add.channelId} to nodeId=${r.innerPayload.outgoingNodeId} reason=trampoline disabled")
- PendingCommandsDb.safeSend(register, nodeParams.db.pendingCommands, add.channelId, CMD_FAIL_HTLC(add.id, Right(RequiredNodeFeatureMissing), commit = true))
+ PendingCommandsDb.safeSend(register, nodeParams.db.pendingCommands, add.channelId, CMD_FAIL_HTLC(add.id, Right(RequiredNodeFeatureMissing()), commit = true))
  } else {
  nodeRelayer ! NodeRelayer.Relay(r)
  }
@@ -81,7 +81,7 @@ class Relayer(nodeParams: NodeParams, router: ActorRef, register: ActorRef, paym
  val delay_opt = badOnion match {
  // We are the introduction point of a blinded path: we add a non-negligible delay to make it look like it
  // could come from a downstream node.
- case InvalidOnionBlinding(_) if add.blinding_opt.isEmpty => Some(500.millis + Random.nextLong(1500).millis)
+ case _: InvalidOnionBlinding if add.blinding_opt.isEmpty => Some(500.millis + Random.nextLong(1500).millis)
  case _ => None
  }
  val cmdFail = CMD_FAIL_MALFORMED_HTLC(add.id, badOnion.onionHash, badOnion.code, delay_opt, commit = true)

eclair-core/src/main/scala/fr/acinq/eclair/payment/send/Autoprobe.scala

@@ -19,7 +19,7 @@ package fr.acinq.eclair.payment.send
 import akka.actor.{Actor, ActorLogging, ActorRef, Props}
 import fr.acinq.bitcoin.scalacompat.Crypto.PublicKey
 import fr.acinq.eclair.crypto.Sphinx.DecryptedFailurePacket
-import fr.acinq.eclair.payment.{PaymentEvent, PaymentFailed, Bolt11Invoice, Invoice, RemoteFailure}
+import fr.acinq.eclair.payment.{Bolt11Invoice, PaymentEvent, PaymentFailed, RemoteFailure}
 import fr.acinq.eclair.router.Router
 import fr.acinq.eclair.wire.protocol.IncorrectOrUnknownPaymentDetails
 import fr.acinq.eclair.{MilliSatoshiLong, NodeParams, TimestampSecond, randomBytes32, randomLong}
@@ -73,7 +73,7 @@ class Autoprobe(nodeParams: NodeParams, router: ActorRef, paymentInitiator: Acto
 
  case paymentResult: PaymentEvent =>
  paymentResult match {
- case PaymentFailed(_, _, _ :+ RemoteFailure(_, _, DecryptedFailurePacket(targetNodeId, IncorrectOrUnknownPaymentDetails(_, _))), _) =>
+ case PaymentFailed(_, _, _ :+ RemoteFailure(_, _, DecryptedFailurePacket(targetNodeId, _: IncorrectOrUnknownPaymentDetails)), _) =>
  log.info(s"payment probe successful to node=$targetNodeId")
  case _ =>
  log.info(s"payment probe failed with paymentResult=$paymentResult")

eclair-core/src/main/scala/fr/acinq/eclair/payment/send/PaymentInitiator.scala

@@ -139,7 +139,7 @@ class PaymentInitiator(nodeParams: NodeParams, outgoingPaymentFactory: PaymentIn
  case pp: PendingTrampolinePayment =>
  val trampolineHop = NodeHop(pp.r.trampolineNodeId, pp.r.recipientNodeId, pp.r.trampolineAttempts.last._2, pp.r.trampolineAttempts.last._1)
  val decryptedFailures = pf.failures.collect { case RemoteFailure(_, _, Sphinx.DecryptedFailurePacket(_, f)) => f }
- val shouldRetry = decryptedFailures.contains(TrampolineFeeInsufficient) || decryptedFailures.contains(TrampolineExpiryTooSoon)
+ val shouldRetry = decryptedFailures.contains(TrampolineFeeInsufficient()) || decryptedFailures.contains(TrampolineExpiryTooSoon())
  if (shouldRetry) {
  pp.remainingAttempts match {
  case (trampolineFees, trampolineExpiryDelta) :: remaining =>

eclair-core/src/main/scala/fr/acinq/eclair/payment/send/PaymentLifecycle.scala

@@ -182,7 +182,7 @@ class PaymentLifecycle(nodeParams: NodeParams, cfg: SendPaymentConfig, router: A
  router ! Router.RouteCouldRelay(stoppedRoute)
  }
  failureMessage match {
- case TemporaryChannelFailure(update) =>
+ case TemporaryChannelFailure(update, _) =>
  route.hops.find(_.nodeId == nodeId) match {
  case Some(failingHop) if HopRelayParams.areSame(failingHop.params, HopRelayParams.FromAnnouncement(update), ignoreHtlcSize = true) =>
  router ! Router.ChannelCouldNotRelay(stoppedRoute.amount, failingHop)