// You may not use this file except in accordance with one or both of these
// licenses.
-//! A module for paying Lightning invoices.
+//! A module for paying Lightning invoices and sending spontaneous payments.
//!
-//! Defines an [`InvoicePayer`] utility for paying invoices, parameterized by [`Payer`] and
+//! Defines an [`InvoicePayer`] utility for sending payments, parameterized by [`Payer`] and
//! [`Router`] traits. Implementations of [`Payer`] provide the payer's node id, channels, and means
//! to send a payment over a [`Route`]. Implementations of [`Router`] find a [`Route`] between payer
-//! and payee using information provided by the payer and from the payee's [`Invoice`].
+//! and payee using information provided by the payer and from the payee's [`Invoice`], when
+//! applicable.
//!
//! [`InvoicePayer`] is capable of retrying failed payments. It accomplishes this by implementing
//! [`EventHandler`] which decorates a user-provided handler. It will intercept any
//! # extern crate lightning_invoice;
//! # extern crate secp256k1;
//! #
-//! # use lightning::ln::{PaymentHash, PaymentSecret};
+//! # use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
//! # use lightning::ln::channelmanager::{ChannelDetails, PaymentId, PaymentSendFailure};
//! # use lightning::ln::msgs::LightningError;
-//! # use lightning::routing::router::{Route, RouteParameters};
+//! # use lightning::routing;
+//! # use lightning::routing::network_graph::NodeId;
+//! # use lightning::routing::router::{Route, RouteHop, RouteParameters};
//! # use lightning::util::events::{Event, EventHandler, EventsProvider};
//! # use lightning::util::logger::{Logger, Record};
//! # use lightning_invoice::Invoice;
//! # use lightning_invoice::payment::{InvoicePayer, Payer, RetryAttempts, Router};
//! # use secp256k1::key::PublicKey;
+//! # use std::cell::RefCell;
//! # use std::ops::Deref;
//! #
//! # struct FakeEventProvider {}
//! # fn send_payment(
//! # &self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>
//! # ) -> Result<PaymentId, PaymentSendFailure> { unimplemented!() }
+//! # fn send_spontaneous_payment(
+//! # &self, route: &Route, payment_preimage: PaymentPreimage
+//! # ) -> Result<PaymentId, PaymentSendFailure> { unimplemented!() }
//! # fn retry_payment(
//! # &self, route: &Route, payment_id: PaymentId
//! # ) -> Result<(), PaymentSendFailure> { unimplemented!() }
//! # }
//! #
//! # struct FakeRouter {};
-//! # impl Router for FakeRouter {
+//! # impl<S: routing::Score> Router<S> for FakeRouter {
//! # fn find_route(
//! # &self, payer: &PublicKey, params: &RouteParameters,
-//! # first_hops: Option<&[&ChannelDetails]>
+//! # first_hops: Option<&[&ChannelDetails]>, scorer: &S
//! # ) -> Result<Route, LightningError> { unimplemented!() }
//! # }
//! #
+//! # struct FakeScorer {};
+//! # impl routing::Score for FakeScorer {
+//! # fn channel_penalty_msat(
+//! # &self, _short_channel_id: u64, _source: &NodeId, _target: &NodeId
+//! # ) -> u64 { 0 }
+//! # fn payment_path_failed(&mut self, _path: &[&RouteHop], _short_channel_id: u64) {}
+//! # }
+//! #
//! # struct FakeLogger {};
//! # impl Logger for FakeLogger {
//! # fn log(&self, record: &Record) { unimplemented!() }
//! };
//! # let payer = FakePayer {};
//! # let router = FakeRouter {};
+//! # let scorer = RefCell::new(FakeScorer {});
//! # let logger = FakeLogger {};
-//! let invoice_payer = InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+//! let invoice_payer = InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
//!
//! let invoice = "...";
//! let invoice = invoice.parse::<Invoice>().unwrap();
use crate::Invoice;
use bitcoin_hashes::Hash;
+use bitcoin_hashes::sha256::Hash as Sha256;
-use lightning::ln::{PaymentHash, PaymentSecret};
+use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
use lightning::ln::channelmanager::{ChannelDetails, PaymentId, PaymentSendFailure};
use lightning::ln::msgs::LightningError;
+use lightning::routing;
+use lightning::routing::{LockableScore, Score};
use lightning::routing::router::{Payee, Route, RouteParameters};
use lightning::util::events::{Event, EventHandler};
use lightning::util::logger::Logger;
use std::sync::Mutex;
use std::time::{Duration, SystemTime};
-/// A utility for paying [`Invoice]`s.
-pub struct InvoicePayer<P: Deref, R, L: Deref, E>
+/// A utility for paying [`Invoice`]s and sending spontaneous payments.
+pub struct InvoicePayer<P: Deref, R, S: Deref, L: Deref, E>
where
P::Target: Payer,
- R: Router,
+ R: for <'a> Router<<<S as Deref>::Target as routing::LockableScore<'a>>::Locked>,
+ S::Target: for <'a> routing::LockableScore<'a>,
L::Target: Logger,
E: EventHandler,
{
payer: P,
router: R,
+ scorer: S,
logger: L,
event_handler: E,
+ /// Caches the overall attempts at making a payment, which is updated prior to retrying.
payment_cache: Mutex<HashMap<PaymentHash, usize>>,
retry_attempts: RetryAttempts,
}
&self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>
) -> Result<PaymentId, PaymentSendFailure>;
+ /// Sends a spontaneous payment over the Lightning Network using the given [`Route`].
+ fn send_spontaneous_payment(
+ &self, route: &Route, payment_preimage: PaymentPreimage
+ ) -> Result<PaymentId, PaymentSendFailure>;
+
/// Retries a failed payment path for the [`PaymentId`] using the given [`Route`].
fn retry_payment(&self, route: &Route, payment_id: PaymentId) -> Result<(), PaymentSendFailure>;
}
/// A trait defining behavior for routing an [`Invoice`] payment.
-pub trait Router {
+pub trait Router<S: routing::Score> {
/// Finds a [`Route`] between `payer` and `payee` for a payment with the given values.
fn find_route(
- &self, payer: &PublicKey, params: &RouteParameters, first_hops: Option<&[&ChannelDetails]>
+ &self, payer: &PublicKey, params: &RouteParameters, first_hops: Option<&[&ChannelDetails]>,
+ scorer: &S
) -> Result<Route, LightningError>;
}
/// Number of attempts to retry payment path failures for an [`Invoice`].
+///
+/// Note that this is the number of *path* failures, not full payment retries. For multi-path
+/// payments, if this is less than the total number of paths, we will never even retry all of the
+/// payment's paths.
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
pub struct RetryAttempts(pub usize);
Sending(PaymentSendFailure),
}
-impl<P: Deref, R, L: Deref, E> InvoicePayer<P, R, L, E>
+impl<P: Deref, R, S: Deref, L: Deref, E> InvoicePayer<P, R, S, L, E>
where
P::Target: Payer,
- R: Router,
+ R: for <'a> Router<<<S as Deref>::Target as routing::LockableScore<'a>>::Locked>,
+ S::Target: for <'a> routing::LockableScore<'a>,
L::Target: Logger,
E: EventHandler,
{
/// Will forward any [`Event::PaymentPathFailed`] events to the decorated `event_handler` once
/// `retry_attempts` has been exceeded for a given [`Invoice`].
pub fn new(
- payer: P, router: R, logger: L, event_handler: E, retry_attempts: RetryAttempts
+ payer: P, router: R, scorer: S, logger: L, event_handler: E, retry_attempts: RetryAttempts
) -> Self {
Self {
payer,
router,
+ scorer,
logger,
event_handler,
payment_cache: Mutex::new(HashMap::new()),
}
/// Pays the given [`Invoice`], caching it for later use in case a retry is needed.
+ ///
+ /// You should ensure that the `invoice.payment_hash()` is unique and the same payment_hash has
+ /// never been paid before. Because [`InvoicePayer`] is stateless no effort is made to do so
+ /// for you.
pub fn pay_invoice(&self, invoice: &Invoice) -> Result<PaymentId, PaymentError> {
if invoice.amount_milli_satoshis().is_none() {
Err(PaymentError::Invoice("amount missing"))
} else {
- self.pay_invoice_internal(invoice, None)
+ self.pay_invoice_using_amount(invoice, None)
}
}
/// Pays the given zero-value [`Invoice`] using the given amount, caching it for later use in
/// case a retry is needed.
+ ///
+ /// You should ensure that the `invoice.payment_hash()` is unique and the same payment_hash has
+ /// never been paid before. Because [`InvoicePayer`] is stateless no effort is made to do so
+ /// for you.
pub fn pay_zero_value_invoice(
&self, invoice: &Invoice, amount_msats: u64
) -> Result<PaymentId, PaymentError> {
if invoice.amount_milli_satoshis().is_some() {
Err(PaymentError::Invoice("amount unexpected"))
} else {
- self.pay_invoice_internal(invoice, Some(amount_msats))
+ self.pay_invoice_using_amount(invoice, Some(amount_msats))
}
}
- fn pay_invoice_internal(
+ fn pay_invoice_using_amount(
&self, invoice: &Invoice, amount_msats: Option<u64>
) -> Result<PaymentId, PaymentError> {
debug_assert!(invoice.amount_milli_satoshis().is_some() ^ amount_msats.is_some());
+
let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
- let mut payment_cache = self.payment_cache.lock().unwrap();
- match payment_cache.entry(payment_hash) {
- hash_map::Entry::Vacant(entry) => {
- let payer = self.payer.node_id();
- let mut payee = Payee::new(invoice.recover_payee_pub_key())
- .with_expiry_time(expiry_time_from_unix_epoch(&invoice).as_secs())
- .with_route_hints(invoice.route_hints());
- if let Some(features) = invoice.features() {
- payee = payee.with_features(features.clone());
- }
- let params = RouteParameters {
- payee,
- final_value_msat: invoice.amount_milli_satoshis().or(amount_msats).unwrap(),
- final_cltv_expiry_delta: invoice.min_final_cltv_expiry() as u32,
- };
- let first_hops = self.payer.first_hops();
- let route = self.router.find_route(
- &payer,
- ¶ms,
- Some(&first_hops.iter().collect::<Vec<_>>()),
- ).map_err(|e| PaymentError::Routing(e))?;
-
- let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
- let payment_secret = Some(invoice.payment_secret().clone());
- let payment_id = self.payer.send_payment(&route, payment_hash, &payment_secret)
- .map_err(|e| PaymentError::Sending(e))?;
- entry.insert(0);
- Ok(payment_id)
- },
- hash_map::Entry::Occupied(_) => Err(PaymentError::Invoice("payment pending")),
+ match self.payment_cache.lock().unwrap().entry(payment_hash) {
+ hash_map::Entry::Occupied(_) => return Err(PaymentError::Invoice("payment pending")),
+ hash_map::Entry::Vacant(entry) => entry.insert(0),
+ };
+
+ let payment_secret = Some(invoice.payment_secret().clone());
+ let mut payee = Payee::from_node_id(invoice.recover_payee_pub_key())
+ .with_expiry_time(expiry_time_from_unix_epoch(&invoice).as_secs())
+ .with_route_hints(invoice.route_hints());
+ if let Some(features) = invoice.features() {
+ payee = payee.with_features(features.clone());
}
+ let params = RouteParameters {
+ payee,
+ final_value_msat: invoice.amount_milli_satoshis().or(amount_msats).unwrap(),
+ final_cltv_expiry_delta: invoice.min_final_cltv_expiry() as u32,
+ };
+
+ let send_payment = |route: &Route| {
+ self.payer.send_payment(route, payment_hash, &payment_secret)
+ };
+ self.pay_internal(¶ms, payment_hash, send_payment)
+ .map_err(|e| { self.payment_cache.lock().unwrap().remove(&payment_hash); e })
}
- fn retry_payment(
- &self, payment_id: PaymentId, params: &RouteParameters
- ) -> Result<(), PaymentError> {
+ /// Pays `pubkey` an amount using the hash of the given preimage, caching it for later use in
+ /// case a retry is needed.
+ ///
+ /// You should ensure that `payment_preimage` is unique and that its `payment_hash` has never
+ /// been paid before. Because [`InvoicePayer`] is stateless no effort is made to do so for you.
+ pub fn pay_pubkey(
+ &self, pubkey: PublicKey, payment_preimage: PaymentPreimage, amount_msats: u64,
+ final_cltv_expiry_delta: u32
+ ) -> Result<PaymentId, PaymentError> {
+ let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
+ match self.payment_cache.lock().unwrap().entry(payment_hash) {
+ hash_map::Entry::Occupied(_) => return Err(PaymentError::Invoice("payment pending")),
+ hash_map::Entry::Vacant(entry) => entry.insert(0),
+ };
+
+ let params = RouteParameters {
+ payee: Payee::for_keysend(pubkey),
+ final_value_msat: amount_msats,
+ final_cltv_expiry_delta,
+ };
+
+ let send_payment = |route: &Route| {
+ self.payer.send_spontaneous_payment(route, payment_preimage)
+ };
+ self.pay_internal(¶ms, payment_hash, send_payment)
+ .map_err(|e| { self.payment_cache.lock().unwrap().remove(&payment_hash); e })
+ }
+
+ fn pay_internal<F: FnOnce(&Route) -> Result<PaymentId, PaymentSendFailure> + Copy>(
+ &self, params: &RouteParameters, payment_hash: PaymentHash, send_payment: F,
+ ) -> Result<PaymentId, PaymentError> {
+ if has_expired(params) {
+ log_trace!(self.logger, "Invoice expired prior to send for payment {}", log_bytes!(payment_hash.0));
+ return Err(PaymentError::Invoice("Invoice expired prior to send"));
+ }
+
let payer = self.payer.node_id();
let first_hops = self.payer.first_hops();
let route = self.router.find_route(
- &payer, ¶ms, Some(&first_hops.iter().collect::<Vec<_>>())
+ &payer,
+ params,
+ Some(&first_hops.iter().collect::<Vec<_>>()),
+ &self.scorer.lock(),
).map_err(|e| PaymentError::Routing(e))?;
- self.payer.retry_payment(&route, payment_id).map_err(|e| PaymentError::Sending(e))
+
+ match send_payment(&route) {
+ Ok(payment_id) => Ok(payment_id),
+ Err(e) => match e {
+ PaymentSendFailure::ParameterError(_) => Err(e),
+ PaymentSendFailure::PathParameterError(_) => Err(e),
+ PaymentSendFailure::AllFailedRetrySafe(_) => {
+ let mut payment_cache = self.payment_cache.lock().unwrap();
+ let retry_count = payment_cache.get_mut(&payment_hash).unwrap();
+ if *retry_count >= self.retry_attempts.0 {
+ Err(e)
+ } else {
+ *retry_count += 1;
+ std::mem::drop(payment_cache);
+ Ok(self.pay_internal(params, payment_hash, send_payment)?)
+ }
+ },
+ PaymentSendFailure::PartialFailure { failed_paths_retry, payment_id, .. } => {
+ if let Some(retry_data) = failed_paths_retry {
+ // 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 _ = self.retry_payment(payment_id, payment_hash, &retry_data);
+ Ok(payment_id)
+ } else {
+ // 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(payment_id)
+ }
+ },
+ },
+ }.map_err(|e| PaymentError::Sending(e))
+ }
+
+ fn retry_payment(
+ &self, payment_id: PaymentId, payment_hash: PaymentHash, params: &RouteParameters
+ ) -> Result<(), ()> {
+ let max_payment_attempts = self.retry_attempts.0 + 1;
+ let attempts = *self.payment_cache.lock().unwrap()
+ .entry(payment_hash)
+ .and_modify(|attempts| *attempts += 1)
+ .or_insert(1);
+
+ if attempts >= max_payment_attempts {
+ log_trace!(self.logger, "Payment {} exceeded maximum attempts; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
+ return Err(());
+ }
+
+ if has_expired(params) {
+ log_trace!(self.logger, "Invoice expired for payment {}; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
+ return Err(());
+ }
+
+ let payer = self.payer.node_id();
+ let first_hops = self.payer.first_hops();
+ let route = self.router.find_route(&payer, ¶ms, Some(&first_hops.iter().collect::<Vec<_>>()), &self.scorer.lock());
+ if route.is_err() {
+ log_trace!(self.logger, "Failed to find a route for payment {}; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
+ return Err(());
+ }
+
+ match self.payer.retry_payment(&route.unwrap(), payment_id) {
+ Ok(()) => Ok(()),
+ Err(PaymentSendFailure::ParameterError(_)) |
+ Err(PaymentSendFailure::PathParameterError(_)) => {
+ log_trace!(self.logger, "Failed to retry for payment {} due to bogus route/payment data, not retrying.", log_bytes!(payment_hash.0));
+ Err(())
+ },
+ Err(PaymentSendFailure::AllFailedRetrySafe(_)) => {
+ self.retry_payment(payment_id, payment_hash, params)
+ },
+ Err(PaymentSendFailure::PartialFailure { failed_paths_retry, .. }) => {
+ if let Some(retry) = failed_paths_retry {
+ // Always return Ok for the same reason as noted in pay_internal.
+ let _ = self.retry_payment(payment_id, payment_hash, &retry);
+ }
+ Ok(())
+ },
+ }
}
/// Removes the payment cached by the given payment hash.
}
fn has_expired(params: &RouteParameters) -> bool {
- let expiry_time = Duration::from_secs(params.payee.expiry_time.unwrap());
- Invoice::is_expired_from_epoch(&SystemTime::UNIX_EPOCH, expiry_time)
+ if let Some(expiry_time) = params.payee.expiry_time {
+ Invoice::is_expired_from_epoch(&SystemTime::UNIX_EPOCH, Duration::from_secs(expiry_time))
+ } else { false }
}
-impl<P: Deref, R, L: Deref, E> EventHandler for InvoicePayer<P, R, L, E>
+impl<P: Deref, R, S: Deref, L: Deref, E> EventHandler for InvoicePayer<P, R, S, L, E>
where
P::Target: Payer,
- R: Router,
+ R: for <'a> Router<<<S as Deref>::Target as routing::LockableScore<'a>>::Locked>,
+ S::Target: for <'a> routing::LockableScore<'a>,
L::Target: Logger,
E: EventHandler,
{
fn handle_event(&self, event: &Event) {
match event {
- Event::PaymentPathFailed { payment_id, payment_hash, rejected_by_dest, retry, .. } => {
- let mut payment_cache = self.payment_cache.lock().unwrap();
- let entry = loop {
- let entry = payment_cache.entry(*payment_hash);
- match entry {
- hash_map::Entry::Occupied(_) => break entry,
- hash_map::Entry::Vacant(entry) => entry.insert(0),
- };
- };
- if let hash_map::Entry::Occupied(mut entry) = entry {
- let max_payment_attempts = self.retry_attempts.0 + 1;
- let attempts = entry.get_mut();
- *attempts += 1;
-
- if *rejected_by_dest {
- log_trace!(self.logger, "Payment {} rejected by destination; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- } else if payment_id.is_none() {
- log_trace!(self.logger, "Payment {} has no id; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- } else if *attempts >= max_payment_attempts {
- log_trace!(self.logger, "Payment {} exceeded maximum attempts; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- } else if retry.is_none() {
- log_trace!(self.logger, "Payment {} missing retry params; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- } else if has_expired(retry.as_ref().unwrap()) {
- log_trace!(self.logger, "Invoice expired for payment {}; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- } else if self.retry_payment(*payment_id.as_ref().unwrap(), retry.as_ref().unwrap()).is_err() {
- log_trace!(self.logger, "Error retrying payment {}; not retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- } else {
- log_trace!(self.logger, "Payment {} failed; retrying (attempts: {})", log_bytes!(payment_hash.0), attempts);
- return;
- }
+ Event::PaymentPathFailed {
+ all_paths_failed, payment_id, payment_hash, rejected_by_dest, path,
+ short_channel_id, retry, ..
+ } => {
+ if let Some(short_channel_id) = short_channel_id {
+ let path = path.iter().collect::<Vec<_>>();
+ self.scorer.lock().payment_path_failed(&path, *short_channel_id);
+ }
- // Either the payment was rejected, the maximum attempts were exceeded, or an
- // error occurred when attempting to retry.
- entry.remove();
- } else {
- unreachable!();
+ if *rejected_by_dest {
+ log_trace!(self.logger, "Payment {} rejected by destination; not retrying", log_bytes!(payment_hash.0));
+ } else if payment_id.is_none() {
+ log_trace!(self.logger, "Payment {} has no id; not retrying", log_bytes!(payment_hash.0));
+ } else if retry.is_none() {
+ log_trace!(self.logger, "Payment {} missing retry params; not retrying", log_bytes!(payment_hash.0));
+ } else if self.retry_payment(payment_id.unwrap(), *payment_hash, retry.as_ref().unwrap()).is_ok() {
+ // We retried at least somewhat, don't provide the PaymentPathFailed event to the user.
+ return;
}
+
+ if *all_paths_failed { self.payment_cache.lock().unwrap().remove(payment_hash); }
},
Event::PaymentSent { payment_hash, .. } => {
let mut payment_cache = self.payment_cache.lock().unwrap();
mod tests {
use super::*;
use crate::{DEFAULT_EXPIRY_TIME, InvoiceBuilder, Currency};
+ use utils::create_invoice_from_channelmanager;
use bitcoin_hashes::sha256::Hash as Sha256;
use lightning::ln::PaymentPreimage;
- use lightning::ln::features::{ChannelFeatures, NodeFeatures};
+ use lightning::ln::features::{ChannelFeatures, NodeFeatures, InitFeatures};
+ use lightning::ln::functional_test_utils::*;
use lightning::ln::msgs::{ErrorAction, LightningError};
- use lightning::routing::router::{Route, RouteHop};
+ use lightning::routing::network_graph::NodeId;
+ use lightning::routing::router::{Payee, Route, RouteHop};
use lightning::util::test_utils::TestLogger;
use lightning::util::errors::APIError;
- use lightning::util::events::Event;
+ use lightning::util::events::{Event, MessageSendEventsProvider};
use secp256k1::{SecretKey, PublicKey, Secp256k1};
+ use std::cell::RefCell;
+ use std::collections::VecDeque;
use std::time::{SystemTime, Duration};
fn invoice(payment_preimage: PaymentPreimage) -> Invoice {
.unwrap()
}
+ fn pubkey() -> PublicKey {
+ PublicKey::from_slice(&hex::decode("02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619").unwrap()[..]).unwrap()
+ }
+
#[test]
fn pays_invoice_on_first_attempt() {
let event_handled = core::cell::RefCell::new(false);
let payment_preimage = PaymentPreimage([1; 32]);
let invoice = invoice(payment_preimage);
let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
- let payer = TestPayer::new();
+ let payer = TestPayer::new().expect_send(Amount::ForInvoice(final_value_msat));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(0));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(0));
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
invoice_payer.handle_event(&Event::PaymentSent {
- payment_id, payment_preimage, payment_hash
+ payment_id, payment_preimage, payment_hash, fee_paid_msat: None
});
assert_eq!(*event_handled.borrow(), true);
assert_eq!(*payer.attempts.borrow(), 1);
let final_value_msat = invoice.amount_milli_satoshis().unwrap();
let payer = TestPayer::new()
- .expect_value_msat(final_value_msat)
- .expect_value_msat(final_value_msat / 2);
+ .expect_send(Amount::ForInvoice(final_value_msat))
+ .expect_send(Amount::OnRetry(final_value_msat / 2));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
assert_eq!(*payer.attempts.borrow(), 2);
invoice_payer.handle_event(&Event::PaymentSent {
- payment_id, payment_preimage, payment_hash
+ payment_id, payment_preimage, payment_hash, fee_paid_msat: None
});
assert_eq!(*event_handled.borrow(), true);
assert_eq!(*payer.attempts.borrow(), 2);
}
+ #[test]
+ fn pays_invoice_on_partial_failure() {
+ let event_handler = |_: &_| { panic!() };
+
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let retry = TestRouter::retry_for_invoice(&invoice);
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+
+ let payer = TestPayer::new()
+ .fails_with_partial_failure(retry.clone(), OnAttempt(1))
+ .fails_with_partial_failure(retry, OnAttempt(2))
+ .expect_send(Amount::ForInvoice(final_value_msat))
+ .expect_send(Amount::OnRetry(final_value_msat / 2))
+ .expect_send(Amount::OnRetry(final_value_msat / 2));
+ let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
+ let logger = TestLogger::new();
+ let invoice_payer =
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
+
+ assert!(invoice_payer.pay_invoice(&invoice).is_ok());
+ }
+
#[test]
fn retries_payment_path_for_unknown_payment() {
let event_handled = core::cell::RefCell::new(false);
let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
let final_value_msat = invoice.amount_milli_satoshis().unwrap();
- let payer = TestPayer::new();
+ let payer = TestPayer::new()
+ .expect_send(Amount::OnRetry(final_value_msat / 2))
+ .expect_send(Amount::OnRetry(final_value_msat / 2));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
let payment_id = Some(PaymentId([1; 32]));
let event = Event::PaymentPathFailed {
assert_eq!(*payer.attempts.borrow(), 2);
invoice_payer.handle_event(&Event::PaymentSent {
- payment_id, payment_preimage, payment_hash
+ payment_id, payment_preimage, payment_hash, fee_paid_msat: None
});
assert_eq!(*event_handled.borrow(), true);
assert_eq!(*payer.attempts.borrow(), 2);
let final_value_msat = invoice.amount_milli_satoshis().unwrap();
let payer = TestPayer::new()
- .expect_value_msat(final_value_msat)
- .expect_value_msat(final_value_msat / 2)
- .expect_value_msat(final_value_msat / 2);
+ .expect_send(Amount::ForInvoice(final_value_msat))
+ .expect_send(Amount::OnRetry(final_value_msat / 2))
+ .expect_send(Amount::OnRetry(final_value_msat / 2));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
let event_handled = core::cell::RefCell::new(false);
let event_handler = |_: &_| { *event_handled.borrow_mut() = true; };
- let payer = TestPayer::new();
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+
+ let payer = TestPayer::new().expect_send(Amount::ForInvoice(final_value_msat));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
- let payment_preimage = PaymentPreimage([1; 32]);
- let invoice = invoice(payment_preimage);
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
let payer = TestPayer::new();
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
let payment_preimage = PaymentPreimage([1; 32]);
let invoice = expired_invoice(payment_preimage);
+ if let PaymentError::Invoice(msg) = invoice_payer.pay_invoice(&invoice).unwrap_err() {
+ assert_eq!(msg, "Invoice expired prior to send");
+ } else { panic!("Expected Invoice Error"); }
+ }
+
+ #[test]
+ fn fails_retrying_invoice_after_expiration() {
+ let event_handled = core::cell::RefCell::new(false);
+ let event_handler = |_: &_| { *event_handled.borrow_mut() = true; };
+
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+
+ let payer = TestPayer::new().expect_send(Amount::ForInvoice(final_value_msat));
+ let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
+ let logger = TestLogger::new();
+ let invoice_payer =
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
+
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
+ let mut retry_data = TestRouter::retry_for_invoice(&invoice);
+ retry_data.payee.expiry_time = Some(SystemTime::now()
+ .checked_sub(Duration::from_secs(2)).unwrap()
+ .duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs());
let event = Event::PaymentPathFailed {
payment_id,
payment_hash: PaymentHash(invoice.payment_hash().clone().into_inner()),
all_paths_failed: false,
path: vec![],
short_channel_id: None,
- retry: Some(TestRouter::retry_for_invoice(&invoice)),
+ retry: Some(retry_data),
};
invoice_payer.handle_event(&event);
assert_eq!(*event_handled.borrow(), true);
let payer = TestPayer::new()
.fails_on_attempt(2)
- .expect_value_msat(final_value_msat);
+ .expect_send(Amount::ForInvoice(final_value_msat))
+ .expect_send(Amount::OnRetry(final_value_msat / 2));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
let event_handled = core::cell::RefCell::new(false);
let event_handler = |_: &_| { *event_handled.borrow_mut() = true; };
- let payer = TestPayer::new();
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+
+ let payer = TestPayer::new().expect_send(Amount::ForInvoice(final_value_msat));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(2));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
- let payment_preimage = PaymentPreimage([1; 32]);
- let invoice = invoice(payment_preimage);
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
let event_handled = core::cell::RefCell::new(false);
let event_handler = |_: &_| { *event_handled.borrow_mut() = true; };
- let payer = TestPayer::new();
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+
+ let payer = TestPayer::new()
+ .expect_send(Amount::ForInvoice(final_value_msat))
+ .expect_send(Amount::ForInvoice(final_value_msat));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(0));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(0));
- let payment_preimage = PaymentPreimage([1; 32]);
- let invoice = invoice(payment_preimage);
let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
// Cannot repay an invoice pending payment.
fn fails_paying_invoice_with_routing_errors() {
let payer = TestPayer::new();
let router = FailingRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, |_: &_| {}, RetryAttempts(0));
+ InvoicePayer::new(&payer, router, &scorer, &logger, |_: &_| {}, RetryAttempts(0));
let payment_preimage = PaymentPreimage([1; 32]);
let invoice = invoice(payment_preimage);
#[test]
fn fails_paying_invoice_with_sending_errors() {
- let payer = TestPayer::new().fails_on_attempt(1);
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+
+ let payer = TestPayer::new()
+ .fails_on_attempt(1)
+ .expect_send(Amount::ForInvoice(final_value_msat));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, |_: &_| {}, RetryAttempts(0));
+ InvoicePayer::new(&payer, router, &scorer, &logger, |_: &_| {}, RetryAttempts(0));
- let payment_preimage = PaymentPreimage([1; 32]);
- let invoice = invoice(payment_preimage);
match invoice_payer.pay_invoice(&invoice) {
Err(PaymentError::Sending(_)) => {},
Err(_) => panic!("unexpected error"),
let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
let final_value_msat = 100;
- let payer = TestPayer::new().expect_value_msat(final_value_msat);
+ let payer = TestPayer::new().expect_send(Amount::ForInvoice(final_value_msat));
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(0));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(0));
let payment_id =
Some(invoice_payer.pay_zero_value_invoice(&invoice, final_value_msat).unwrap());
assert_eq!(*payer.attempts.borrow(), 1);
invoice_payer.handle_event(&Event::PaymentSent {
- payment_id, payment_preimage, payment_hash
+ payment_id, payment_preimage, payment_hash, fee_paid_msat: None
});
assert_eq!(*event_handled.borrow(), true);
assert_eq!(*payer.attempts.borrow(), 1);
let payer = TestPayer::new();
let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
let logger = TestLogger::new();
let invoice_payer =
- InvoicePayer::new(&payer, router, &logger, event_handler, RetryAttempts(0));
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(0));
let payment_preimage = PaymentPreimage([1; 32]);
let invoice = invoice(payment_preimage);
}
}
+ #[test]
+ fn pays_pubkey_with_amount() {
+ let event_handled = core::cell::RefCell::new(false);
+ let event_handler = |_: &_| { *event_handled.borrow_mut() = true; };
+
+ let pubkey = pubkey();
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
+ let final_value_msat = 100;
+ let final_cltv_expiry_delta = 42;
+
+ let payer = TestPayer::new()
+ .expect_send(Amount::Spontaneous(final_value_msat))
+ .expect_send(Amount::OnRetry(final_value_msat));
+ let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new());
+ let logger = TestLogger::new();
+ let invoice_payer =
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
+
+ let payment_id = Some(invoice_payer.pay_pubkey(
+ pubkey, payment_preimage, final_value_msat, final_cltv_expiry_delta
+ ).unwrap());
+ assert_eq!(*payer.attempts.borrow(), 1);
+
+ let retry = RouteParameters {
+ payee: Payee::for_keysend(pubkey),
+ final_value_msat,
+ final_cltv_expiry_delta,
+ };
+ let event = Event::PaymentPathFailed {
+ payment_id,
+ payment_hash,
+ network_update: None,
+ rejected_by_dest: false,
+ all_paths_failed: false,
+ path: vec![],
+ short_channel_id: None,
+ retry: Some(retry),
+ };
+ invoice_payer.handle_event(&event);
+ assert_eq!(*event_handled.borrow(), false);
+ assert_eq!(*payer.attempts.borrow(), 2);
+
+ invoice_payer.handle_event(&Event::PaymentSent {
+ payment_id, payment_preimage, payment_hash, fee_paid_msat: None
+ });
+ assert_eq!(*event_handled.borrow(), true);
+ assert_eq!(*payer.attempts.borrow(), 2);
+ }
+
+ #[test]
+ fn scores_failed_channel() {
+ let event_handled = core::cell::RefCell::new(false);
+ let event_handler = |_: &_| { *event_handled.borrow_mut() = true; };
+
+ let payment_preimage = PaymentPreimage([1; 32]);
+ let invoice = invoice(payment_preimage);
+ let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
+ let final_value_msat = invoice.amount_milli_satoshis().unwrap();
+ let path = TestRouter::path_for_value(final_value_msat);
+ let short_channel_id = Some(path[0].short_channel_id);
+
+ // Expect that scorer is given short_channel_id upon handling the event.
+ let payer = TestPayer::new()
+ .expect_send(Amount::ForInvoice(final_value_msat))
+ .expect_send(Amount::OnRetry(final_value_msat / 2));
+ let router = TestRouter {};
+ let scorer = RefCell::new(TestScorer::new().expect_channel_failure(short_channel_id.unwrap()));
+ let logger = TestLogger::new();
+ let invoice_payer =
+ InvoicePayer::new(&payer, router, &scorer, &logger, event_handler, RetryAttempts(2));
+
+ let payment_id = Some(invoice_payer.pay_invoice(&invoice).unwrap());
+ let event = Event::PaymentPathFailed {
+ payment_id,
+ payment_hash,
+ network_update: None,
+ rejected_by_dest: false,
+ all_paths_failed: false,
+ path,
+ short_channel_id,
+ retry: Some(TestRouter::retry_for_invoice(&invoice)),
+ };
+ invoice_payer.handle_event(&event);
+ }
+
struct TestRouter;
impl TestRouter {
}
fn retry_for_invoice(invoice: &Invoice) -> RouteParameters {
- let mut payee = Payee::new(invoice.recover_payee_pub_key())
+ let mut payee = Payee::from_node_id(invoice.recover_payee_pub_key())
.with_expiry_time(expiry_time_from_unix_epoch(invoice).as_secs())
.with_route_hints(invoice.route_hints());
if let Some(features) = invoice.features() {
}
}
- impl Router for TestRouter {
+ impl<S: routing::Score> Router<S> for TestRouter {
fn find_route(
&self,
_payer: &PublicKey,
params: &RouteParameters,
_first_hops: Option<&[&ChannelDetails]>,
+ _scorer: &S,
) -> Result<Route, LightningError> {
Ok(Route {
payee: Some(params.payee.clone()), ..Self::route_for_value(params.final_value_msat)
struct FailingRouter;
- impl Router for FailingRouter {
+ impl<S: routing::Score> Router<S> for FailingRouter {
fn find_route(
&self,
_payer: &PublicKey,
_params: &RouteParameters,
_first_hops: Option<&[&ChannelDetails]>,
+ _scorer: &S,
) -> Result<Route, LightningError> {
Err(LightningError { err: String::new(), action: ErrorAction::IgnoreError })
}
}
+ struct TestScorer {
+ expectations: VecDeque<u64>,
+ }
+
+ impl TestScorer {
+ fn new() -> Self {
+ Self {
+ expectations: VecDeque::new(),
+ }
+ }
+
+ fn expect_channel_failure(mut self, short_channel_id: u64) -> Self {
+ self.expectations.push_back(short_channel_id);
+ self
+ }
+ }
+
+ impl routing::Score for TestScorer {
+ fn channel_penalty_msat(
+ &self, _short_channel_id: u64, _source: &NodeId, _target: &NodeId
+ ) -> u64 { 0 }
+
+ fn payment_path_failed(&mut self, _path: &[&RouteHop], short_channel_id: u64) {
+ if let Some(expected_short_channel_id) = self.expectations.pop_front() {
+ assert_eq!(short_channel_id, expected_short_channel_id);
+ }
+ }
+ }
+
+ impl Drop for TestScorer {
+ fn drop(&mut self) {
+ if std::thread::panicking() {
+ return;
+ }
+
+ if !self.expectations.is_empty() {
+ panic!("Unsatisfied channel failure expectations: {:?}", self.expectations);
+ }
+ }
+ }
+
struct TestPayer {
- expectations: core::cell::RefCell<std::collections::VecDeque<u64>>,
+ expectations: core::cell::RefCell<VecDeque<Amount>>,
attempts: core::cell::RefCell<usize>,
- failing_on_attempt: Option<usize>,
+ failing_on_attempt: core::cell::RefCell<HashMap<usize, PaymentSendFailure>>,
+ }
+
+ #[derive(Clone, Debug, PartialEq, Eq)]
+ enum Amount {
+ ForInvoice(u64),
+ Spontaneous(u64),
+ OnRetry(u64),
}
+ struct OnAttempt(usize);
+
impl TestPayer {
fn new() -> Self {
Self {
- expectations: core::cell::RefCell::new(std::collections::VecDeque::new()),
+ expectations: core::cell::RefCell::new(VecDeque::new()),
attempts: core::cell::RefCell::new(0),
- failing_on_attempt: None,
+ failing_on_attempt: core::cell::RefCell::new(HashMap::new()),
}
}
- fn expect_value_msat(self, value_msat: u64) -> Self {
+ fn expect_send(self, value_msat: Amount) -> Self {
self.expectations.borrow_mut().push_back(value_msat);
self
}
fn fails_on_attempt(self, attempt: usize) -> Self {
- Self {
- expectations: core::cell::RefCell::new(self.expectations.borrow().clone()),
- attempts: core::cell::RefCell::new(0),
- failing_on_attempt: Some(attempt),
- }
+ let failure = PaymentSendFailure::ParameterError(APIError::MonitorUpdateFailed);
+ self.fails_with(failure, OnAttempt(attempt))
}
- fn check_attempts(&self) -> bool {
+ fn fails_with_partial_failure(self, retry: RouteParameters, attempt: OnAttempt) -> Self {
+ self.fails_with(PaymentSendFailure::PartialFailure {
+ results: vec![],
+ failed_paths_retry: Some(retry),
+ payment_id: PaymentId([1; 32]),
+ }, attempt)
+ }
+
+ fn fails_with(self, failure: PaymentSendFailure, attempt: OnAttempt) -> Self {
+ self.failing_on_attempt.borrow_mut().insert(attempt.0, failure);
+ self
+ }
+
+ fn check_attempts(&self) -> Result<PaymentId, PaymentSendFailure> {
let mut attempts = self.attempts.borrow_mut();
*attempts += 1;
- match self.failing_on_attempt {
- None => true,
- Some(attempt) if attempt != *attempts => true,
- Some(_) => false,
+
+ match self.failing_on_attempt.borrow_mut().remove(&*attempts) {
+ Some(failure) => Err(failure),
+ None => Ok(PaymentId([1; 32])),
}
}
- fn check_value_msats(&self, route: &Route) {
+ fn check_value_msats(&self, actual_value_msats: Amount) {
let expected_value_msats = self.expectations.borrow_mut().pop_front();
if let Some(expected_value_msats) = expected_value_msats {
- let actual_value_msats = route.get_total_amount();
assert_eq!(actual_value_msats, expected_value_msats);
+ } else {
+ panic!("Unexpected amount: {:?}", actual_value_msats);
}
}
}
}
fn send_payment(
- &self,
- route: &Route,
- _payment_hash: PaymentHash,
+ &self, route: &Route, _payment_hash: PaymentHash,
_payment_secret: &Option<PaymentSecret>
) -> Result<PaymentId, PaymentSendFailure> {
- if self.check_attempts() {
- self.check_value_msats(route);
- Ok(PaymentId([1; 32]))
- } else {
- Err(PaymentSendFailure::ParameterError(APIError::MonitorUpdateFailed))
- }
+ self.check_value_msats(Amount::ForInvoice(route.get_total_amount()));
+ self.check_attempts()
+ }
+
+ fn send_spontaneous_payment(
+ &self, route: &Route, _payment_preimage: PaymentPreimage,
+ ) -> Result<PaymentId, PaymentSendFailure> {
+ self.check_value_msats(Amount::Spontaneous(route.get_total_amount()));
+ self.check_attempts()
}
fn retry_payment(
&self, route: &Route, _payment_id: PaymentId
) -> Result<(), PaymentSendFailure> {
- if self.check_attempts() {
- self.check_value_msats(route);
- Ok(())
- } else {
- Err(PaymentSendFailure::ParameterError(APIError::MonitorUpdateFailed))
+ self.check_value_msats(Amount::OnRetry(route.get_total_amount()));
+ self.check_attempts().map(|_| ())
+ }
+ }
+
+ // *** Full Featured Functional Tests with a Real ChannelManager ***
+ struct ManualRouter(RefCell<VecDeque<Result<Route, LightningError>>>);
+
+ impl<S: routing::Score> Router<S> for ManualRouter {
+ fn find_route(&self, _payer: &PublicKey, _params: &RouteParameters, _first_hops: Option<&[&ChannelDetails]>, _scorer: &S)
+ -> Result<Route, LightningError> {
+ self.0.borrow_mut().pop_front().unwrap()
+ }
+ }
+ impl ManualRouter {
+ fn expect_find_route(&self, result: Result<Route, LightningError>) {
+ self.0.borrow_mut().push_back(result);
+ }
+ }
+ impl Drop for ManualRouter {
+ fn drop(&mut self) {
+ if std::thread::panicking() {
+ return;
}
+ assert!(self.0.borrow_mut().is_empty());
}
}
+
+ #[test]
+ fn retry_multi_path_single_failed_payment() {
+ // Tests that we can/will retry after a single path of an MPP payment failed immediately
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
+ let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chans = nodes[0].node.list_usable_channels();
+ let mut route = Route {
+ paths: vec![
+ vec![RouteHop {
+ pubkey: nodes[1].node.get_our_node_id(),
+ node_features: NodeFeatures::known(),
+ short_channel_id: chans[0].short_channel_id.unwrap(),
+ channel_features: ChannelFeatures::known(),
+ fee_msat: 10_000,
+ cltv_expiry_delta: 100,
+ }],
+ vec![RouteHop {
+ pubkey: nodes[1].node.get_our_node_id(),
+ node_features: NodeFeatures::known(),
+ short_channel_id: chans[1].short_channel_id.unwrap(),
+ channel_features: ChannelFeatures::known(),
+ fee_msat: 100_000_001, // Our default max-HTLC-value is 10% of the channel value, which this is one more than
+ cltv_expiry_delta: 100,
+ }],
+ ],
+ payee: Some(Payee::from_node_id(nodes[1].node.get_our_node_id())),
+ };
+ let router = ManualRouter(RefCell::new(VecDeque::new()));
+ router.expect_find_route(Ok(route.clone()));
+ // On retry, split the payment across both channels.
+ route.paths[0][0].fee_msat = 50_000_001;
+ route.paths[1][0].fee_msat = 50_000_000;
+ router.expect_find_route(Ok(route.clone()));
+
+ let event_handler = |_: &_| { panic!(); };
+ let scorer = RefCell::new(TestScorer::new());
+ let invoice_payer = InvoicePayer::new(nodes[0].node, router, &scorer, nodes[0].logger, event_handler, RetryAttempts(1));
+
+ assert!(invoice_payer.pay_invoice(&create_invoice_from_channelmanager(
+ &nodes[1].node, nodes[1].keys_manager, Currency::Bitcoin, Some(100_010_000), "Invoice".to_string()).unwrap())
+ .is_ok());
+ let htlc_msgs = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(htlc_msgs.len(), 2);
+ check_added_monitors!(nodes[0], 2);
+ }
+
+ #[test]
+ fn immediate_retry_on_failure() {
+ // Tests that we can/will retry immediately after a failure
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
+ let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0, InitFeatures::known(), InitFeatures::known());
+ let chans = nodes[0].node.list_usable_channels();
+ let mut route = Route {
+ paths: vec![
+ vec![RouteHop {
+ pubkey: nodes[1].node.get_our_node_id(),
+ node_features: NodeFeatures::known(),
+ short_channel_id: chans[0].short_channel_id.unwrap(),
+ channel_features: ChannelFeatures::known(),
+ fee_msat: 100_000_001, // Our default max-HTLC-value is 10% of the channel value, which this is one more than
+ cltv_expiry_delta: 100,
+ }],
+ ],
+ payee: Some(Payee::from_node_id(nodes[1].node.get_our_node_id())),
+ };
+ let router = ManualRouter(RefCell::new(VecDeque::new()));
+ router.expect_find_route(Ok(route.clone()));
+ // On retry, split the payment across both channels.
+ route.paths.push(route.paths[0].clone());
+ route.paths[0][0].short_channel_id = chans[1].short_channel_id.unwrap();
+ route.paths[0][0].fee_msat = 50_000_000;
+ route.paths[1][0].fee_msat = 50_000_001;
+ router.expect_find_route(Ok(route.clone()));
+
+ let event_handler = |_: &_| { panic!(); };
+ let scorer = RefCell::new(TestScorer::new());
+ let invoice_payer = InvoicePayer::new(nodes[0].node, router, &scorer, nodes[0].logger, event_handler, RetryAttempts(1));
+
+ assert!(invoice_payer.pay_invoice(&create_invoice_from_channelmanager(
+ &nodes[1].node, nodes[1].keys_manager, Currency::Bitcoin, Some(100_010_000), "Invoice".to_string()).unwrap())
+ .is_ok());
+ let htlc_msgs = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(htlc_msgs.len(), 2);
+ check_added_monitors!(nodes[0], 2);
+ }
}
projects / rust-lightning / blobdiff