Revert "Config-guard Event::InvoiceRequestFailed"

This reverts commit c7219e4.

Author: jkczyz

lightning/src/events/mod.rs

@@ -517,7 +517,6 @@ pub enum Event {
 	/// or was explicitly abandoned by [`ChannelManager::abandon_payment`].
 	///
 	/// [`ChannelManager::abandon_payment`]: crate::ln::channelmanager::ChannelManager::abandon_payment
-	#[cfg(invreqfailed)]
 	InvoiceRequestFailed {
 		/// The `payment_id` to have been associated with payment for the requested invoice.
 		payment_id: PaymentId,
@@ -1164,7 +1163,6 @@ impl Writeable for Event {
 					(8, funding_txo, required),
 				});
 			},
-			#[cfg(invreqfailed)]
 			&Event::InvoiceRequestFailed { ref payment_id } => {
 				33u8.write(writer)?;
 				write_tlv_fields!(writer, {
@@ -1558,7 +1556,6 @@ impl MaybeReadable for Event {
 				};
 				f()
 			},
-			#[cfg(invreqfailed)]
 			33u8 => {
 				let f = || {
 					_init_and_read_len_prefixed_tlv_fields!(reader, {

lightning/src/ln/channelmanager.rs

@@ -3581,10 +3581,19 @@ where
 	/// wait until you receive either a [`Event::PaymentFailed`] or [`Event::PaymentSent`] event to
 	/// determine the ultimate status of a payment.
 	///
+	/// # Requested Invoices
+	///
+	/// In the case of paying a [`Bolt12Invoice`], abandoning the payment prior to receiving the
+	/// invoice will result in an [`Event::InvoiceRequestFailed`] and prevent any attempts at paying
+	/// it once received. The other events may only be generated once the invoice has been received.
+	///
 	/// # Restart Behavior
 	///
 	/// If an [`Event::PaymentFailed`] is generated and we restart without first persisting the
-	/// [`ChannelManager`], another [`Event::PaymentFailed`] may be generated.
+	/// [`ChannelManager`], another [`Event::PaymentFailed`] may be generated; likewise for
+	/// [`Event::InvoiceRequestFailed`].
+	///
+	/// [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
 	pub fn abandon_payment(&self, payment_id: PaymentId) {
 		let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(self);
 		self.pending_outbound_payments.abandon_payment(payment_id, PaymentFailureReason::UserAbandoned, &self.pending_events);

lightning/src/ln/outbound_payment.rs

@@ -1526,9 +1526,6 @@ impl OutboundPayments {
 		pending_events: &Mutex<VecDeque<(events::Event, Option<EventCompletionAction>)>>)
 	{
 		let mut pending_outbound_payments = self.pending_outbound_payments.lock().unwrap();
-		#[cfg(not(invreqfailed))]
-		let pending_events = pending_events.lock().unwrap();
-		#[cfg(invreqfailed)]
 		let mut pending_events = pending_events.lock().unwrap();
 		pending_outbound_payments.retain(|payment_id, payment| match payment {
 			// If an outbound payment was completed, and no pending HTLCs remain, we should remove it
@@ -1578,7 +1575,6 @@ impl OutboundPayments {
 					},
 				};
 				if is_stale {
-					#[cfg(invreqfailed)]
 					pending_events.push_back(
 						(events::Event::InvoiceRequestFailed { payment_id: *payment_id }, None)
 					);
@@ -1734,7 +1730,6 @@ impl OutboundPayments {
 					payment.remove();
 				}
 			} else if let PendingOutboundPayment::AwaitingInvoice { .. } = payment.get() {
-				#[cfg(invreqfailed)]
 				pending_events.lock().unwrap().push_back((events::Event::InvoiceRequestFailed {
 					payment_id,
 				}, None));
@@ -2032,7 +2027,6 @@ mod tests {
 	}
 
 	#[test]
-	#[cfg(invreqfailed)]
 	fn removes_stale_awaiting_invoice_using_absolute_timeout() {
 		let pending_events = Mutex::new(VecDeque::new());
 		let outbound_payments = OutboundPayments::new();
@@ -2083,7 +2077,6 @@ mod tests {
 	}
 
 	#[test]
-	#[cfg(invreqfailed)]
 	fn removes_stale_awaiting_invoice_using_timer_ticks() {
 		let pending_events = Mutex::new(VecDeque::new());
 		let outbound_payments = OutboundPayments::new();
@@ -2133,7 +2126,6 @@ mod tests {
 	}
 
 	#[test]
-	#[cfg(invreqfailed)]
 	fn removes_abandoned_awaiting_invoice() {
 		let pending_events = Mutex::new(VecDeque::new());
 		let outbound_payments = OutboundPayments::new();