}
}
-/// If a payment fails to send, it can be in one of several states. This enum is returned as the
-/// Err() type describing which state the payment is in, see the description of individual enum
-/// states for more.
+/// Indicates an immediate error on [`ChannelManager::send_payment_with_retry`]. Further errors
+/// may be surfaced later via [`Event::PaymentPathFailed`] and [`Event::PaymentFailed`].
+///
+/// [`ChannelManager::send_payment_with_retry`]: crate::ln::channelmanager::ChannelManager::send_payment_with_retry
+/// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed
+/// [`Event::PaymentFailed`]: crate::util::events::Event::PaymentFailed
+#[derive(Clone, Debug)]
+pub enum RetryableSendFailure {
+ /// The provided [`PaymentParameters::expiry_time`] indicated that the payment has expired. Note
+ /// that this error is *not* caused by [`Retry::Timeout`].
+ ///
+ /// [`PaymentParameters::expiry_time`]: crate::routing::router::PaymentParameters::expiry_time
+ PaymentExpired,
+ /// We were unable to find a route to the destination.
+ RouteNotFound,
+ /// Indicates that a payment for the provided [`PaymentId`] is already in-flight and has not
+ /// yet completed (i.e. generated an [`Event::PaymentSent`] or [`Event::PaymentFailed`]).
+ ///
+ /// [`PaymentId`]: crate::ln::channelmanager::PaymentId
+ /// [`Event::PaymentSent`]: crate::util::events::Event::PaymentSent
+ /// [`Event::PaymentFailed`]: crate::util::events::Event::PaymentFailed
+ DuplicatePayment,
+}
+
+/// If a payment fails to send with [`ChannelManager::send_payment`], it can be in one of several
+/// states. This enum is returned as the Err() type describing which state the payment is in, see
+/// the description of individual enum states for more.
+///
+/// [`ChannelManager::send_payment`]: crate::ln::channelmanager::ChannelManager::send_payment
#[derive(Clone, Debug)]
pub enum PaymentSendFailure {
/// A parameter which was passed to send_payment was invalid, preventing us from attempting to
first_hops: Vec<ChannelDetails>, compute_inflight_htlcs: IH, entropy_source: &ES,
node_signer: &NS, best_block_height: u32, logger: &L,
pending_events: &Mutex<Vec<events::Event>>, send_payment_along_path: SP,
- ) -> Result<(), PaymentSendFailure>
+ ) -> Result<(), RetryableSendFailure>
where
R::Target: Router,
ES::Target: EntropySource,
SP: Fn(&Vec<RouteHop>, &Option<PaymentParameters>, &PaymentHash, &Option<PaymentSecret>, u64,
u32, PaymentId, &Option<PaymentPreimage>, [u8; 32]) -> Result<(), APIError>,
{
- self.pay_internal(payment_id, payment_hash, Some((payment_secret, None, retry_strategy)),
+ self.send_payment_internal(payment_id, payment_hash, payment_secret, None, retry_strategy,
route_params, router, first_hops, &compute_inflight_htlcs, entropy_source, node_signer,
best_block_height, logger, pending_events, &send_payment_along_path)
- .map_err(|e| { self.remove_outbound_if_all_failed(payment_id, &e); e })
}
pub(super) fn send_payment_with_route<ES: Deref, NS: Deref, F>(
first_hops: Vec<ChannelDetails>, inflight_htlcs: IH, entropy_source: &ES,
node_signer: &NS, best_block_height: u32, logger: &L,
pending_events: &Mutex<Vec<events::Event>>, send_payment_along_path: SP
- ) -> Result<PaymentHash, PaymentSendFailure>
+ ) -> Result<PaymentHash, RetryableSendFailure>
where
R::Target: Router,
ES::Target: EntropySource,
let preimage = payment_preimage
.unwrap_or_else(|| PaymentPreimage(entropy_source.get_secure_random_bytes()));
let payment_hash = PaymentHash(Sha256::hash(&preimage.0).into_inner());
- self.pay_internal(payment_id, payment_hash, Some((&None, Some(preimage), retry_strategy)),
- route_params, router, first_hops, &inflight_htlcs, entropy_source, node_signer,
- best_block_height, logger, pending_events, &send_payment_along_path)
+ self.send_payment_internal(payment_id, payment_hash, &None, Some(preimage), retry_strategy,
+ route_params, router, first_hops, inflight_htlcs, entropy_source, node_signer,
+ best_block_height, logger, pending_events, send_payment_along_path)
.map(|()| payment_hash)
- .map_err(|e| { self.remove_outbound_if_all_failed(payment_id, &e); e })
}
pub(super) fn send_spontaneous_payment_with_route<ES: Deref, NS: Deref, F>(
}
core::mem::drop(outbounds);
if let Some((payment_id, payment_hash, route_params)) = retry_id_route_params {
- if let Err(e) = self.pay_internal(payment_id, payment_hash, None, route_params, router, first_hops(), &inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, &send_payment_along_path) {
- log_info!(logger, "Errored retrying payment: {:?}", e);
- // If we error on retry, there is no chance of the payment succeeding and no HTLCs have
- // been irrevocably committed to, so we can safely abandon.
- self.abandon_payment(payment_id, pending_events);
- }
+ self.retry_payment_internal(payment_id, payment_hash, route_params, router, first_hops(), &inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, &send_payment_along_path)
} else { break }
}
!pmt.is_auto_retryable_now() && pmt.remaining_parts() == 0 && !pmt.is_fulfilled())
}
- /// Will return `Ok(())` iff at least one HTLC is sent for the payment.
- fn pay_internal<R: Deref, NS: Deref, ES: Deref, IH, SP, L: Deref>(
- &self, payment_id: PaymentId, payment_hash: PaymentHash,
- initial_send_info: Option<(&Option<PaymentSecret>, Option<PaymentPreimage>, Retry)>,
- route_params: RouteParameters, router: &R, first_hops: Vec<ChannelDetails>,
- inflight_htlcs: &IH, entropy_source: &ES, node_signer: &NS, best_block_height: u32,
- logger: &L, pending_events: &Mutex<Vec<events::Event>>, send_payment_along_path: &SP,
- ) -> Result<(), PaymentSendFailure>
+ /// Errors immediately on [`RetryableSendFailure`] error conditions. Otherwise, further errors may
+ /// be surfaced asynchronously via [`Event::PaymentPathFailed`] and [`Event::PaymentFailed`].
+ ///
+ /// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed
+ /// [`Event::PaymentFailed`]: crate::util::events::Event::PaymentFailed
+ fn send_payment_internal<R: Deref, NS: Deref, ES: Deref, IH, SP, L: Deref>(
+ &self, payment_id: PaymentId, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>,
+ keysend_preimage: Option<PaymentPreimage>, retry_strategy: Retry, route_params: RouteParameters,
+ router: &R, first_hops: Vec<ChannelDetails>, inflight_htlcs: IH, entropy_source: &ES,
+ node_signer: &NS, best_block_height: u32, logger: &L,
+ pending_events: &Mutex<Vec<events::Event>>, send_payment_along_path: SP,
+ ) -> Result<(), RetryableSendFailure>
where
R::Target: Router,
ES::Target: EntropySource,
L::Target: Logger,
IH: Fn() -> InFlightHtlcs,
SP: Fn(&Vec<RouteHop>, &Option<PaymentParameters>, &PaymentHash, &Option<PaymentSecret>, u64,
- u32, PaymentId, &Option<PaymentPreimage>, [u8; 32]) -> Result<(), APIError>
+
u32, PaymentId, &Option<PaymentPreimage>, [u8; 32]) -> Result<(), APIError>
{
#[cfg(feature = "std")] {
if has_expired(&route_params) {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: format!("Invoice expired for payment id {}", log_bytes!(payment_id.0)),
- }))
+ return Err(RetryableSendFailure::PaymentExpired)
}
}
let route = router.find_route(
&node_signer.get_node_id(Recipient::Node).unwrap(), &route_params,
- Some(&first_hops.iter().collect::<Vec<_>>()), &inflight_htlcs(),
- ).map_err(|e| PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: format!("Failed to find a route for payment {}: {:?}", log_bytes!(payment_id.0), e), // TODO: add APIError::RouteNotFound
- }))?;
-
- let res = if let Some((payment_secret, keysend_preimage, retry_strategy)) = initial_send_info {
- let onion_session_privs = self.add_new_pending_payment(payment_hash, *payment_secret, payment_id, keysend_preimage, &route, Some(retry_strategy), Some(route_params.payment_params.clone()), entropy_source, best_block_height)?;
- self.pay_route_internal(&route, payment_hash, payment_secret, None, payment_id, None, onion_session_privs, node_signer, best_block_height, send_payment_along_path)
- } else {
- self.retry_payment_with_route(&route, payment_id, entropy_source, node_signer, best_block_height, send_payment_along_path)
+ Some(&first_hops.iter().collect::<Vec<_>>()), &inflight_htlcs()
+ ).map_err(|_| RetryableSendFailure::RouteNotFound)?;
+
+ let onion_session_privs = self.add_new_pending_payment(payment_hash, *payment_secret,
+ payment_id, keysend_preimage, &route, Some(retry_strategy),
+ Some(route_params.payment_params.clone()), entropy_source, best_block_height)
+ .map_err(|_| RetryableSendFailure::DuplicatePayment)?;
+
+ let res = self.pay_route_internal(&route, payment_hash, payment_secret, None, payment_id, None,
+ onion_session_privs, node_signer, best_block_height, &send_payment_along_path);
+ log_info!(logger, "Result sending payment with id {}: {:?}", log_bytes!(payment_id.0), res);
+ if let Err(e) = res {
+ self.handle_pay_route_err(e, payment_id, payment_hash, route, route_params, router, first_hops, &inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, &send_payment_along_path);
+ }
+ Ok(())
+ }
+
+ fn retry_payment_internal<R: Deref, NS: Deref, ES: Deref, IH, SP, L: Deref>(
+ &self, payment_id: PaymentId, payment_hash: PaymentHash, route_params: RouteParameters,
+ router: &R, first_hops: Vec<ChannelDetails>, inflight_htlcs: &IH, entropy_source: &ES,
+ node_signer: &NS, best_block_height: u32, logger: &L,
+ pending_events: &Mutex<Vec<events::Event>>, send_payment_along_path: &SP,
+ )
+ where
+ R::Target: Router,
+ ES::Target: EntropySource,
+ NS::Target: NodeSigner,
+ L::Target: Logger,
+ IH: Fn() -> InFlightHtlcs,
+ SP: Fn(&Vec<RouteHop>, &Option<PaymentParameters>, &PaymentHash, &Option<PaymentSecret>, u64,
+ u32, PaymentId, &Option<PaymentPreimage>, [u8; 32]) -> Result<(), APIError>
+ {
+ #[cfg(feature = "std")] {
+ if has_expired(&route_params) {
+ log_error!(logger, "Payment params expired on retry, abandoning payment {}", log_bytes!(payment_id.0));
+ self.abandon_payment(payment_id, pending_events);
+ return
+ }
+ }
+
+ let route = match router.find_route(
+ &node_signer.get_node_id(Recipient::Node).unwrap(), &route_params,
+ Some(&first_hops.iter().collect::<Vec<_>>()), &inflight_htlcs()
+ ) {
+ Ok(route) => route,
+ Err(e) => {
+ log_error!(logger, "Failed to find a route on retry, abandoning payment {}: {:#?}", log_bytes!(payment_id.0), e);
+ self.abandon_payment(payment_id, pending_events);
+ return
+ }
};
- match res {
- Err(PaymentSendFailure::AllFailedResendSafe(_)) => {
- let retry_res = self.pay_internal(payment_id, payment_hash, None, route_params, router, first_hops, inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, send_payment_along_path);
- log_info!(logger, "Result retrying payment id {}: {:?}", log_bytes!(payment_id.0), retry_res);
- if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = &retry_res {
- if err.starts_with("Retries exhausted ") { return res; }
- }
- retry_res
+
+ let res = self.retry_payment_with_route(&route, payment_id, entropy_source, node_signer,
+ best_block_height, send_payment_along_path);
+ log_info!(logger, "Result retrying payment id {}: {:?}", log_bytes!(payment_id.0), res);
+ if let Err(e) = res {
+ self.handle_pay_route_err(e, payment_id, payment_hash, route, route_params, router, first_hops, inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, send_payment_along_path);
+ }
+ }
+
+ fn handle_pay_route_err<R: Deref, NS: Deref, ES: Deref, IH, SP, L: Deref>(
+ &self, err: PaymentSendFailure, payment_id: PaymentId, payment_hash: PaymentHash, route: Route,
+ route_params: RouteParameters, router: &R, first_hops: Vec<ChannelDetails>, inflight_htlcs: &IH,
+ entropy_source: &ES, node_signer: &NS, best_block_height: u32, logger: &L,
+ pending_events: &Mutex<Vec<events::Event>>, send_payment_along_path: &SP,
+ )
+ where
+ R::Target: Router,
+ ES::Target: EntropySource,
+ NS::Target: NodeSigner,
+ L::Target: Logger,
+ IH: Fn() -> InFlightHtlcs,
+ SP: Fn(&Vec<RouteHop>, &Option<PaymentParameters>, &PaymentHash, &Option<PaymentSecret>, u64,
+ u32, PaymentId, &Option<PaymentPreimage>, [u8; 32]) -> Result<(), APIError>
+ {
+ match err {
+ PaymentSendFailure::AllFailedResendSafe(errs) => {
+ Self::push_payment_path_failed_evs(payment_id, payment_hash, route.paths, errs.into_iter().map(|e| Err(e)), pending_events);
+ self.retry_payment_internal(payment_id, payment_hash, route_params, router, first_hops, inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, send_payment_along_path);
},
- Err(PaymentSendFailure::PartialFailure { failed_paths_retry: Some(retry), .. }) => {
+ PaymentSendFailure::PartialFailure { failed_paths_retry: Some(retry), results, .. } => {
+ Self::push_payment_path_failed_evs(payment_id, payment_hash, route.paths, results.into_iter(), pending_events);
// Some paths were sent, even if we failed to send the full MPP value our recipient may
// misbehave and claim the funds, at which point we have to consider the payment sent, so
// return `Ok()` here, ignoring any retry errors.
- let retry_res = self.pay_internal(payment_id, payment_hash, None, retry, router, first_hops, inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, send_payment_along_path);
- log_info!(logger, "Result retrying payment id {}: {:?}", log_bytes!(payment_id.0), retry_res);
- Ok(())
+ self.retry_payment_internal(payment_id, payment_hash, retry, router, first_hops, inflight_htlcs, entropy_source, node_signer, best_block_height, logger, pending_events, send_payment_along_path);
},
- Err(PaymentSendFailure::PartialFailure { failed_paths_retry: None, .. }) => {
+ PaymentSendFailure::PartialFailure { failed_paths_retry: None, .. } => {
// This may happen if we send a payment and some paths fail, but only due to a temporary
// monitor failure or the like, implying they're really in-flight, but we haven't sent the
// initial HTLC-Add messages yet.
- Ok(())
},
- res => res,
+ PaymentSendFailure::PathParameterError(results) => {
+ Self::push_payment_path_failed_evs(payment_id, payment_hash, route.paths, results.into_iter(), pending_events);
+ self.abandon_payment(payment_id, pending_events);
+ },
+ PaymentSendFailure::ParameterError(e) => {
+ log_error!(logger, "Failed to send to route due to parameter error: {:?}. Your router is buggy", e);
+ self.abandon_payment(payment_id, pending_events);
+ },
+ PaymentSendFailure::DuplicatePayment => debug_assert!(false), // unreachable
+ }
+ }
+
+ fn push_payment_path_failed_evs<I: ExactSizeIterator + Iterator<Item = Result<(), APIError>>>(
+ payment_id: PaymentId, payment_hash: PaymentHash, paths: Vec<Vec<RouteHop>>, path_results: I,
+ pending_events: &Mutex<Vec<events::Event>>
+ ) {
+ let mut events = pending_events.lock().unwrap();
+ debug_assert_eq!(paths.len(), path_results.len());
+ for (path, path_res) in paths.into_iter().zip(path_results) {
+ if let Err(e) = path_res {
+ let failed_scid = if let APIError::InvalidRoute { .. } = e {
+ None
+ } else {
+ Some(path[0].short_channel_id)
+ };
+ events.push(events::Event::PaymentPathFailed {
+ payment_id: Some(payment_id),
+ payment_hash,
+ payment_failed_permanently: false,
+ network_update: None,
+ all_paths_failed: false,
+ path,
+ short_channel_id: failed_scid,
+ retry: None,
+ #[cfg(test)]
+ error_code: None,
+ #[cfg(test)]
+ error_data: None,
+ });
+ }
}
}
use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
use crate::ln::PaymentHash;
- use crate::ln::channelmanager::{PaymentId, PaymentSendFailure};
+ use crate::ln::channelmanager::PaymentId;
use crate::ln::msgs::{ErrorAction, LightningError};
- use crate::ln::outbound_payment::{OutboundPayments, Retry};
+ use crate::ln::outbound_payment::{OutboundPayments, Retry, RetryableSendFailure};
use crate::routing::gossip::NetworkGraph;
use crate::routing::router::{InFlightHtlcs, PaymentParameters, Route, RouteParameters};
use crate::sync::{Arc, Mutex};
- use crate::util::errors::APIError;
+ use crate::util::events::Event;
use crate::util::test_utils;
#[test]
final_cltv_expiry_delta: 0,
};
let pending_events = Mutex::new(Vec::new());
- let err = if on_retry {
- outbound_payments.pay_internal(
- PaymentId([0; 32]), PaymentHash([0; 32]), None, expired_route_params, &&router, vec![],
+ if on_retry {
+ outbound_payments.add_new_pending_payment(PaymentHash([0; 32]), None, PaymentId([0; 32]), None,
+ &Route { paths: vec![], payment_params: None }, Some(Retry::Attempts(1)),
+ Some(expired_route_params.payment_params.clone()), &&keys_manager, 0).unwrap();
+ outbound_payments.retry_payment_internal(
+ PaymentId([0; 32]), PaymentHash([0; 32]), expired_route_params, &&router, vec![],
&|| InFlightHtlcs::new(), &&keys_manager, &&keys_manager, 0, &&logger, &pending_events,
- &|_, _, _, _, _, _, _, _, _| Ok(())).unwrap_err()
+ &|_, _, _, _, _, _, _, _, _| Ok(()));
+ let events = pending_events.lock().unwrap();
+ assert_eq!(events.len(), 1);
+ if let Event::PaymentFailed { .. } = events[0] { } else { panic!("Unexpected event"); }
} else {
- outbound_payments.send_payment(
+ let err = outbound_payments.send_payment(
PaymentHash([0; 32]), &None, PaymentId([0; 32]), Retry::Attempts(0), expired_route_params,
&&router, vec![], || InFlightHtlcs::new(), &&keys_manager, &&keys_manager, 0, &&logger,
- &pending_events, |_, _, _, _, _, _, _, _, _| Ok(())).unwrap_err()
- };
- if let PaymentSendFailure::ParameterError(APIError::APIMisuseError { err }) = err {
- assert!(err.contains("Invoice expired"));
- } else { panic!("Unexpected error"); }
+ &pending_events, |_, _, _, _, _, _, _, _, _| Ok(())).unwrap_err();
+ if let RetryableSendFailure::PaymentExpired = err { } else { panic!("Unexpected error"); }
+ }
}
#[test]
Err(LightningError { err: String::new(), action: ErrorAction::IgnoreError }));
let pending_events = Mutex::new(Vec::new());
- let err = if on_retry {
+ if on_retry {
outbound_payments.add_new_pending_payment(PaymentHash([0; 32]), None, PaymentId([0; 32]), None,
&Route { paths: vec![], payment_params: None }, Some(Retry::Attempts(1)),
Some(route_params.payment_params.clone()), &&keys_manager, 0).unwrap();
- outbound_payments.pay_internal(
- PaymentId([0; 32]), PaymentHash([0; 32]), None, route_params, &&router, vec![],
+ outbound_payments.retry_payment_internal(
+ PaymentId([0; 32]), PaymentHash([0; 32]), route_params, &&router, vec![],
&|| InFlightHtlcs::new(), &&keys_manager, &&keys_manager, 0, &&logger, &pending_events,
- &|_, _, _, _, _, _, _, _, _| Ok(())).unwrap_err()
+ &|_, _, _, _, _, _, _, _, _| Ok(()));
+ let events = pending_events.lock().unwrap();
+ assert_eq!(events.len(), 1);
+ if let Event::PaymentFailed { .. } = events[0] { } else { panic!("Unexpected event"); }
} else {
- outbound_payments.send_payment(
+ let err = outbound_payments.send_payment(
PaymentHash([0; 32]), &None, PaymentId([0; 32]), Retry::Attempts(0), route_params,
&&router, vec![], || InFlightHtlcs::new(), &&keys_manager, &&keys_manager, 0, &&logger,
- &pending_events, |_, _, _, _, _, _, _, _, _| Ok(())).unwrap_err()
- };
- if let PaymentSendFailure::ParameterError(APIError::APIMisuseError { err }) = err {
- assert!(err.contains("Failed to find a route"));
- } else { panic!("Unexpected error"); }
+ &pending_events, |_, _, _, _, _, _, _, _, _| Ok(())).unwrap_err();
+ if let RetryableSendFailure::RouteNotFound = err {
+ } else { panic!("Unexpected error"); }
+ }
}
}
projects / rust-lightning / commitdiff