Rework auto-retry send errors

lightning-invoice/src/payment.rs

@@ -17,7 +17,7 @@ use lightning::chain;
 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
 use lightning::chain::keysinterface::{NodeSigner, SignerProvider, EntropySource};
 use lightning::ln::{PaymentHash, PaymentSecret};
-use lightning::ln::channelmanager::{ChannelManager, PaymentId, PaymentSendFailure, Retry};
+use lightning::ln::channelmanager::{ChannelManager, PaymentId, Retry, RetryableSendFailure};
 use lightning::routing::router::{PaymentParameters, RouteParameters, Router};
 use lightning::util::logger::Logger;
 
@@ -172,7 +172,7 @@ pub enum PaymentError {
 	/// An error resulting from the provided [`Invoice`] or payment hash.
 	Invoice(&'static str),
 	/// An error occurring when sending a payment.
-	Sending(PaymentSendFailure),
+	Sending(RetryableSendFailure),
 }
 
 /// A trait defining behavior of an [`Invoice`] payer.

lightning/src/ln/channelmanager.rs

@@ -76,7 +76,7 @@ use core::time::Duration;
 use core::ops::Deref;
 
 // Re-export this for use in the public API.
-pub use crate::ln::outbound_payment::{PaymentSendFailure, Retry};
+pub use crate::ln::outbound_payment::{PaymentSendFailure, Retry, RetryableSendFailure};
 
 // We hold various information about HTLC relay in the HTLC objects in Channel itself:
 //
@@ -2386,7 +2386,7 @@ where
 
 			let per_peer_state = self.per_peer_state.read().unwrap();
 			let peer_state_mutex = per_peer_state.get(&counterparty_node_id)
-				.ok_or_else(|| APIError::InvalidRoute{err: "No peer matching the path's first hop found!" })?;
+				.ok_or_else(|| APIError::ChannelUnavailable{err: "No peer matching the path's first hop found!".to_owned() })?;
 			let mut peer_state_lock = peer_state_mutex.lock().unwrap();
 			let peer_state = &mut *peer_state_lock;
 			if let hash_map::Entry::Occupied(mut chan) = peer_state.channel_by_id.entry(id) {
@@ -2531,12 +2531,13 @@ where
 
 	/// Similar to [`ChannelManager::send_payment`], but will automatically find a route based on
 	/// `route_params` and retry failed payment paths based on `retry_strategy`.
-	pub fn send_payment_with_retry(&self, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>, payment_id: PaymentId, route_params: RouteParameters, retry_strategy: Retry) -> Result<(), PaymentSendFailure> {
+	pub fn send_payment_with_retry(&self, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>, payment_id: PaymentId, route_params: RouteParameters, retry_strategy: Retry) -> Result<(), RetryableSendFailure> {
 		let best_block_height = self.best_block.read().unwrap().height();
 		self.pending_outbound_payments
 			.send_payment(payment_hash, payment_secret, payment_id, retry_strategy, route_params,
 				&self.router, self.list_usable_channels(), || self.compute_inflight_htlcs(),
 				&self.entropy_source, &self.node_signer, best_block_height, &self.logger,
+				&self.pending_events,
 				|path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
 				self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
 	}
@@ -2608,12 +2609,12 @@ where
 	/// payments.
 	///
 	/// [`PaymentParameters::for_keysend`]: crate::routing::router::PaymentParameters::for_keysend
-	pub fn send_spontaneous_payment_with_retry(&self, payment_preimage: Option<PaymentPreimage>, payment_id: PaymentId, route_params: RouteParameters, retry_strategy: Retry) -> Result<PaymentHash, PaymentSendFailure> {
+	pub fn send_spontaneous_payment_with_retry(&self, payment_preimage: Option<PaymentPreimage>, payment_id: PaymentId, route_params: RouteParameters, retry_strategy: Retry) -> Result<PaymentHash, RetryableSendFailure> {
 		let best_block_height = self.best_block.read().unwrap().height();
 		self.pending_outbound_payments.send_spontaneous_payment(payment_preimage, payment_id,
 			retry_strategy, route_params, &self.router, self.list_usable_channels(),
 			|| self.compute_inflight_htlcs(),  &self.entropy_source, &self.node_signer, best_block_height,
-			&self.logger,
+			&self.logger, &self.pending_events,
 			|path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
 			self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
 	}