diff --git a/lightning/src/routing/router.rs b/lightning/src/routing/router.rs index 2d8dd0d67..395731502 100644 --- a/lightning/src/routing/router.rs +++ b/lightning/src/routing/router.rs @@ -1795,12 +1795,12 @@ where L::Target: Logger { let payment_failed_on_this_channel = scid_opt.map_or(false, |scid| payment_params.previously_failed_channels.contains(&scid)); - let should_log_candidate = match $candidate { - CandidateRouteHop::FirstHop { .. } => true, - CandidateRouteHop::PrivateHop { .. } => true, - CandidateRouteHop::Blinded { .. } => true, - CandidateRouteHop::OneHopBlinded { .. } => true, - _ => false, + let (should_log_candidate, first_hop_details) = match $candidate { + CandidateRouteHop::FirstHop { details } => (true, Some(details)), + CandidateRouteHop::PrivateHop { .. } => (true, None), + CandidateRouteHop::Blinded { .. } => (true, None), + CandidateRouteHop::OneHopBlinded { .. } => (true, None), + _ => (false, None), }; // If HTLC minimum is larger than the amount we're going to transfer, we shouldn't @@ -1810,6 +1810,13 @@ where L::Target: Logger { if !contributes_sufficient_value { if should_log_candidate { log_trace!(logger, "Ignoring {} due to insufficient value contribution.", LoggedCandidateHop(&$candidate)); + + if let Some(details) = first_hop_details { + log_trace!(logger, + "First hop candidate next_outbound_htlc_limit_msat: {}", + details.next_outbound_htlc_limit_msat, + ); + } } num_ignored_value_contribution += 1; } else if exceeds_max_path_length { @@ -1820,6 +1827,14 @@ where L::Target: Logger { } else if exceeds_cltv_delta_limit { if should_log_candidate { log_trace!(logger, "Ignoring {} due to exceeding CLTV delta limit.", LoggedCandidateHop(&$candidate)); + + if let Some(_) = first_hop_details { + log_trace!(logger, + "First hop candidate cltv_expiry_delta: {}. Limit: {}", + hop_total_cltv_delta, + max_total_cltv_expiry_delta, + ); + } } num_ignored_cltv_delta_limit += 1; } else if payment_failed_on_this_channel { @@ -1832,6 +1847,13 @@ where L::Target: Logger { log_trace!(logger, "Ignoring {} to avoid overpaying to meet htlc_minimum_msat limit.", LoggedCandidateHop(&$candidate)); + + if let Some(details) = first_hop_details { + log_trace!(logger, + "First hop candidate next_outbound_htlc_minimum_msat: {}", + details.next_outbound_htlc_minimum_msat, + ); + } } num_ignored_avoid_overpayment += 1; hit_minimum_limit = true; @@ -1893,6 +1915,14 @@ where L::Target: Logger { if total_fee_msat > max_total_routing_fee_msat { if should_log_candidate { log_trace!(logger, "Ignoring {} due to exceeding max total routing fee limit.", LoggedCandidateHop(&$candidate)); + + if let Some(_) = first_hop_details { + log_trace!(logger, + "First hop candidate routing fee: {}. Limit: {}", + total_fee_msat, + max_total_routing_fee_msat, + ); + } } num_ignored_total_fee_limit += 1; } else { @@ -1988,6 +2018,13 @@ where L::Target: Logger { log_trace!(logger, "Ignoring {} due to its htlc_minimum_msat limit.", LoggedCandidateHop(&$candidate)); + + if let Some(details) = first_hop_details { + log_trace!(logger, + "First hop candidate next_outbound_htlc_minimum_msat: {}", + details.next_outbound_htlc_minimum_msat, + ); + } } num_ignored_htlc_minimum_msat_limit += 1; }