X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Frouting%2Frouter.rs;h=8b2e4d137fd93f83fed0904fda12f6148a1e6834;hb=391fbfbe1abbd011395542f5f0f96dbc57b8655e;hp=93d3dc8f10a311f60763549014bac7faed27a2f9;hpb=6e86776a71cd1e383707180571fc46118c926eca;p=rust-lightning diff --git a/lightning/src/routing/router.rs b/lightning/src/routing/router.rs index 93d3dc8f..8b2e4d13 100644 --- a/lightning/src/routing/router.rs +++ b/lightning/src/routing/router.rs @@ -17,7 +17,7 @@ use bitcoin::secp256k1::key::PublicKey; use ln::channelmanager::ChannelDetails; use ln::features::{ChannelFeatures, InvoiceFeatures, NodeFeatures}; use ln::msgs::{DecodeError, ErrorAction, LightningError, MAX_VALUE_MSAT}; -use routing; +use routing::scoring::Score; use routing::network_graph::{NetworkGraph, NodeId, RoutingFees}; use util::ser::{Writeable, Readable}; use util::logger::{Level, Logger}; @@ -203,7 +203,7 @@ impl_writeable_tlv_based!(Payee, { impl Payee { /// Creates a payee with the node id of the given `pubkey`. - pub fn new(pubkey: PublicKey) -> Self { + pub fn from_node_id(pubkey: PublicKey) -> Self { Self { pubkey, features: None, @@ -214,7 +214,7 @@ impl Payee { /// Creates a payee with the node id of the given `pubkey` to use for keysend payments. pub fn for_keysend(pubkey: PublicKey) -> Self { - Self::new(pubkey).with_features(InvoiceFeatures::for_keysend()) + Self::from_node_id(pubkey).with_features(InvoiceFeatures::for_keysend()) } /// Includes the payee's features. @@ -232,6 +232,8 @@ impl Payee { } /// Includes a payment expiration in seconds relative to the UNIX epoch. + /// + /// (C-not exported) since bindings don't support move semantics pub fn with_expiry_time(self, expiry_time: u64) -> Self { Self { expiry_time: Some(expiry_time), ..self } } @@ -527,7 +529,7 @@ fn compute_fees(amount_msat: u64, channel_fees: RoutingFees) -> Option { /// /// [`ChannelManager::list_usable_channels`]: crate::ln::channelmanager::ChannelManager::list_usable_channels /// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed -pub fn find_route( +pub fn find_route( our_node_pubkey: &PublicKey, params: &RouteParameters, network: &NetworkGraph, first_hops: Option<&[&ChannelDetails]>, logger: L, scorer: &S ) -> Result @@ -538,7 +540,7 @@ where L::Target: Logger { ) } -pub(crate) fn get_route( +pub(crate) fn get_route( our_node_pubkey: &PublicKey, payee: &Payee, network: &NetworkGraph, first_hops: Option<&[&ChannelDetails]>, final_value_msat: u64, final_cltv_expiry_delta: u32, logger: L, scorer: &S @@ -890,9 +892,9 @@ where L::Target: Logger { } } - let path_penalty_msat = $next_hops_path_penalty_msat - .checked_add(scorer.channel_penalty_msat($chan_id.clone(), &$src_node_id, &$dest_node_id)) - .unwrap_or_else(|| u64::max_value()); + let path_penalty_msat = $next_hops_path_penalty_msat.checked_add( + scorer.channel_penalty_msat($chan_id.clone(), amount_to_transfer_over_msat, Some(*available_liquidity_msat), + &$src_node_id, &$dest_node_id)).unwrap_or_else(|| u64::max_value()); let new_graph_node = RouteGraphNode { node_id: $src_node_id, lowest_fee_to_peer_through_node: total_fee_msat, @@ -1111,22 +1113,28 @@ where L::Target: Logger { fees: hop.fees, }; - let reqd_channel_cap = if let Some (val) = final_value_msat.checked_add(match idx { - 0 => 999, - _ => aggregate_next_hops_fee_msat.checked_add(999).unwrap_or(u64::max_value()) - }) { Some( val / 1000 ) } else { break; }; // converting from msat or breaking if max ~ infinity + // We want a value of final_value_msat * ROUTE_CAPACITY_PROVISION_FACTOR but we + // need it to increment at each hop by the fee charged at later hops. Further, + // we need to ensure we round up when we divide to get satoshis. + let channel_cap_msat = final_value_msat + .checked_mul(ROUTE_CAPACITY_PROVISION_FACTOR).and_then(|v| v.checked_add(aggregate_next_hops_fee_msat)) + .unwrap_or(u64::max_value()); + let channel_cap_sat = match channel_cap_msat.checked_add(999) { + None => break, // We overflowed above, just ignore this route hint + Some(val) => Some(val / 1000), + }; let src_node_id = NodeId::from_pubkey(&hop.src_node_id); let dest_node_id = NodeId::from_pubkey(&prev_hop_id); aggregate_next_hops_path_penalty_msat = aggregate_next_hops_path_penalty_msat - .checked_add(scorer.channel_penalty_msat(hop.short_channel_id, &src_node_id, &dest_node_id)) + .checked_add(scorer.channel_penalty_msat(hop.short_channel_id, final_value_msat, None, &src_node_id, &dest_node_id)) .unwrap_or_else(|| u64::max_value()); // We assume that the recipient only included route hints for routes which had // sufficient value to route `final_value_msat`. Note that in the case of "0-value" // invoices where the invoice does not specify value this may not be the case, but // better to include the hints than not. - if !add_entry!(hop.short_channel_id, src_node_id, dest_node_id, directional_info, reqd_channel_cap, &empty_channel_features, aggregate_next_hops_fee_msat, path_value_msat, aggregate_next_hops_path_htlc_minimum_msat, aggregate_next_hops_path_penalty_msat) { + if !add_entry!(hop.short_channel_id, src_node_id, dest_node_id, directional_info, channel_cap_sat, &empty_channel_features, aggregate_next_hops_fee_msat, path_value_msat, aggregate_next_hops_path_htlc_minimum_msat, aggregate_next_hops_path_penalty_msat) { // If this hop was not used then there is no use checking the preceding hops // in the RouteHint. We can break by just searching for a direct channel between // last checked hop and first_hop_targets @@ -1470,10 +1478,9 @@ where L::Target: Logger { #[cfg(test)] mod tests { - use routing; + use routing::scoring::Score; use routing::network_graph::{NetworkGraph, NetGraphMsgHandler, NodeId}; use routing::router::{get_route, Payee, Route, RouteHint, RouteHintHop, RouteHop, RoutingFees}; - use routing::scorer::Scorer; use chain::transaction::OutPoint; use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures}; use ln::msgs::{ErrorAction, LightningError, OptionalField, UnsignedChannelAnnouncement, ChannelAnnouncement, RoutingMessageHandler, @@ -1942,8 +1949,8 @@ mod tests { fn simple_route_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[2]); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Simple route to 2 via 1 @@ -1973,8 +1980,8 @@ mod tests { fn invalid_first_hop_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[2]); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Simple route to 2 via 1 @@ -1992,8 +1999,8 @@ mod tests { fn htlc_minimum_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[2]); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Simple route to 2 via 1 @@ -2117,8 +2124,8 @@ mod tests { fn htlc_minimum_overpay_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[2]).with_features(InvoiceFeatures::known()); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // A route to node#2 via two paths. // One path allows transferring 35-40 sats, another one also allows 35-40 sats. @@ -2253,8 +2260,8 @@ mod tests { fn disable_channels_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[2]); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // // Disable channels 4 and 12 by flags=2 update_channel(&net_graph_msg_handler, &secp_ctx, &privkeys[1], UnsignedChannelUpdate { @@ -2311,8 +2318,8 @@ mod tests { fn disable_node_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (_, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[2]); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Disable nodes 1, 2, and 8 by requiring unknown feature bits let unknown_features = NodeFeatures::known().set_unknown_feature_required(); @@ -2353,10 +2360,10 @@ mod tests { fn our_chans_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Route to 1 via 2 and 3 because our channel to 1 is disabled - let payee = Payee::new(nodes[0]); + let payee = Payee::from_node_id(nodes[0]); let route = get_route(&our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); assert_eq!(route.paths[0].len(), 3); @@ -2382,7 +2389,7 @@ mod tests { assert_eq!(route.paths[0][2].channel_features.le_flags(), &id_to_feature_flags(3)); // If we specify a channel to node7, that overrides our local channel view and that gets used - let payee = Payee::new(nodes[2]); + let payee = Payee::from_node_id(nodes[2]); let our_chans = vec![get_channel_details(Some(42), nodes[7].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)]; let route = get_route(&our_id, &payee, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer).unwrap(); assert_eq!(route.paths[0].len(), 2); @@ -2482,7 +2489,7 @@ mod tests { fn partial_route_hint_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Simple test across 2, 3, 5, and 4 via a last_hop channel // Tests the behaviour when the RouteHint contains a suboptimal hop. @@ -2504,13 +2511,13 @@ mod tests { let mut invalid_last_hops = last_hops_multi_private_channels(&nodes); invalid_last_hops.push(invalid_last_hop); { - let payee = Payee::new(nodes[6]).with_route_hints(invalid_last_hops); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(invalid_last_hops); if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer) { assert_eq!(err, "Route hint cannot have the payee as the source."); } else { panic!(); } } - let payee = Payee::new(nodes[6]).with_route_hints(last_hops_multi_private_channels(&nodes)); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(last_hops_multi_private_channels(&nodes)); let route = get_route(&our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); assert_eq!(route.paths[0].len(), 5); @@ -2580,8 +2587,8 @@ mod tests { fn ignores_empty_last_hops_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[6]).with_route_hints(empty_last_hop(&nodes)); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(empty_last_hop(&nodes)); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Test handling of an empty RouteHint passed in Invoice. @@ -2662,8 +2669,8 @@ mod tests { fn multi_hint_last_hops_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (_, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[6]).with_route_hints(multi_hint_last_hops(&nodes)); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(multi_hint_last_hops(&nodes)); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Test through channels 2, 3, 5, 8. // Test shows that multiple hop hints are considered. @@ -2768,8 +2775,8 @@ mod tests { fn last_hops_with_public_channel_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[6]).with_route_hints(last_hops_with_public_channel(&nodes)); - let scorer = Scorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(last_hops_with_public_channel(&nodes)); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // This test shows that public routes can be present in the invoice // which would be handled in the same manner. @@ -2818,12 +2825,12 @@ mod tests { fn our_chans_last_hop_connect_test() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // Simple test with outbound channel to 4 to test that last_hops and first_hops connect let our_chans = vec![get_channel_details(Some(42), nodes[3].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)]; let mut last_hops = last_hops(&nodes); - let payee = Payee::new(nodes[6]).with_route_hints(last_hops.clone()); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(last_hops.clone()); let route = get_route(&our_id, &payee, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer).unwrap(); assert_eq!(route.paths[0].len(), 2); @@ -2844,7 +2851,7 @@ mod tests { last_hops[0].0[0].fees.base_msat = 1000; // Revert to via 6 as the fee on 8 goes up - let payee = Payee::new(nodes[6]).with_route_hints(last_hops); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(last_hops); let route = get_route(&our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); assert_eq!(route.paths[0].len(), 4); @@ -2937,9 +2944,9 @@ mod tests { htlc_minimum_msat: None, htlc_maximum_msat: last_hop_htlc_max, }]); - let payee = Payee::new(target_node_id).with_route_hints(vec![last_hops]); + let payee = Payee::from_node_id(target_node_id).with_route_hints(vec![last_hops]); let our_chans = vec![get_channel_details(Some(42), middle_node_id, InitFeatures::from_le_bytes(vec![0b11]), outbound_capacity_msat)]; - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); get_route(&source_node_id, &payee, &NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash()), Some(&our_chans.iter().collect::>()), route_val, 42, &test_utils::TestLogger::new(), &scorer) } @@ -2993,8 +3000,8 @@ mod tests { let (secp_ctx, network_graph, mut net_graph_msg_handler, chain_monitor, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[2]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We will use a simple single-path route from // our node to node2 via node0: channels {1, 3}. @@ -3265,8 +3272,8 @@ mod tests { // one of the latter hops is limited. let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[3]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // Path via {node7, node2, node4} is channels {12, 13, 6, 11}. // {12, 13, 11} have the capacities of 100, {6} has a capacity of 50. @@ -3388,8 +3395,8 @@ mod tests { fn ignore_fee_first_hop_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); // Path via node0 is channels {1, 3}. Limit them to 100 and 50 sats (total limit 50). update_channel(&net_graph_msg_handler, &secp_ctx, &our_privkey, UnsignedChannelUpdate { @@ -3434,8 +3441,8 @@ mod tests { fn simple_mpp_route_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[2]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We need a route consisting of 3 paths: // From our node to node2 via node0, node7, node1 (three paths one hop each). @@ -3565,8 +3572,8 @@ mod tests { fn long_mpp_route_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[3]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // We need a route consisting of 3 paths: // From our node to node3 via {node0, node2}, {node7, node2, node4} and {node7, node2}. @@ -3727,8 +3734,8 @@ mod tests { fn mpp_cheaper_route_test() { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[3]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // This test checks that if we have two cheaper paths and one more expensive path, // so that liquidity-wise any 2 of 3 combination is sufficient, @@ -3894,8 +3901,8 @@ mod tests { // if the fee is not properly accounted for, the behavior is different. let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[3]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // We need a route consisting of 2 paths: // From our node to node3 via {node0, node2} and {node7, node2, node4}. @@ -4054,7 +4061,105 @@ mod tests { assert_eq!(total_amount_paid_msat, 200_000); assert_eq!(route.get_total_fees(), 150_000); } + } + + #[test] + fn mpp_with_last_hops() { + // Previously, if we tried to send an MPP payment to a destination which was only reachable + // via a single last-hop route hint, we'd fail to route if we first collected routes + // totaling close but not quite enough to fund the full payment. + // + // This was because we considered last-hop hints to have exactly the sought payment amount + // instead of the amount we were trying to collect, needlessly limiting our path searching + // at the very first hop. + // + // Specifically, this interacted with our "all paths must fund at least 5% of total target" + // criterion to cause us to refuse all routes at the last hop hint which would be considered + // to only have the remaining to-collect amount in available liquidity. + // + // This bug appeared in production in some specific channel configurations. + let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); + let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(PublicKey::from_slice(&[02; 33]).unwrap()).with_features(InvoiceFeatures::known()) + .with_route_hints(vec![RouteHint(vec![RouteHintHop { + src_node_id: nodes[2], + short_channel_id: 42, + fees: RoutingFees { base_msat: 0, proportional_millionths: 0 }, + cltv_expiry_delta: 42, + htlc_minimum_msat: None, + htlc_maximum_msat: None, + }])]); + + // Keep only two paths from us to nodes[2], both with a 99sat HTLC maximum, with one with + // no fee and one with a 1msat fee. Previously, trying to route 100 sats to nodes[2] here + // would first use the no-fee route and then fail to find a path along the second route as + // we think we can only send up to 1 additional sat over the last-hop but refuse to as its + // under 5% of our payment amount. + update_channel(&net_graph_msg_handler, &secp_ctx, &our_privkey, UnsignedChannelUpdate { + chain_hash: genesis_block(Network::Testnet).header.block_hash(), + short_channel_id: 1, + timestamp: 2, + flags: 0, + cltv_expiry_delta: u16::max_value(), + htlc_minimum_msat: 0, + htlc_maximum_msat: OptionalField::Present(99_000), + fee_base_msat: u32::max_value(), + fee_proportional_millionths: u32::max_value(), + excess_data: Vec::new() + }); + update_channel(&net_graph_msg_handler, &secp_ctx, &our_privkey, UnsignedChannelUpdate { + chain_hash: genesis_block(Network::Testnet).header.block_hash(), + short_channel_id: 2, + timestamp: 2, + flags: 0, + cltv_expiry_delta: u16::max_value(), + htlc_minimum_msat: 0, + htlc_maximum_msat: OptionalField::Present(99_000), + fee_base_msat: u32::max_value(), + fee_proportional_millionths: u32::max_value(), + excess_data: Vec::new() + }); + update_channel(&net_graph_msg_handler, &secp_ctx, &privkeys[1], UnsignedChannelUpdate { + chain_hash: genesis_block(Network::Testnet).header.block_hash(), + short_channel_id: 4, + timestamp: 2, + flags: 0, + cltv_expiry_delta: (4 << 8) | 1, + htlc_minimum_msat: 0, + htlc_maximum_msat: OptionalField::Absent, + fee_base_msat: 1, + fee_proportional_millionths: 0, + excess_data: Vec::new() + }); + update_channel(&net_graph_msg_handler, &secp_ctx, &privkeys[7], UnsignedChannelUpdate { + chain_hash: genesis_block(Network::Testnet).header.block_hash(), + short_channel_id: 13, + timestamp: 2, + flags: 0|2, // Channel disabled + cltv_expiry_delta: (13 << 8) | 1, + htlc_minimum_msat: 0, + htlc_maximum_msat: OptionalField::Absent, + fee_base_msat: 0, + fee_proportional_millionths: 2000000, + excess_data: Vec::new() + }); + // Get a route for 100 sats and check that we found the MPP route no problem and didn't + // overpay at all. + let route = get_route(&our_id, &payee, &network_graph, None, 100_000, 42, Arc::clone(&logger), &scorer).unwrap(); + assert_eq!(route.paths.len(), 2); + // Paths are somewhat randomly ordered, but: + // * the first is channel 2 (1 msat fee) -> channel 4 -> channel 42 + // * the second is channel 1 (0 fee, but 99 sat maximum) -> channel 3 -> channel 42 + assert_eq!(route.paths[0][0].short_channel_id, 2); + assert_eq!(route.paths[0][0].fee_msat, 1); + assert_eq!(route.paths[0][2].fee_msat, 1_000); + assert_eq!(route.paths[1][0].short_channel_id, 1); + assert_eq!(route.paths[1][0].fee_msat, 0); + assert_eq!(route.paths[1][2].fee_msat, 99_000); + assert_eq!(route.get_total_fees(), 1); + assert_eq!(route.get_total_amount(), 100_000); } #[test] @@ -4063,8 +4168,8 @@ mod tests { // path finding we realize that we found more capacity than we need. let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[2]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We need a route consisting of 3 paths: // From our node to node2 via node0, node7, node1 (three paths one hop each). @@ -4220,8 +4325,8 @@ mod tests { let network_graph = Arc::new(NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash())); let net_graph_msg_handler = NetGraphMsgHandler::new(Arc::clone(&network_graph), None, Arc::clone(&logger)); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[6]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[6]); add_channel(&net_graph_msg_handler, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6); update_channel(&net_graph_msg_handler, &secp_ctx, &our_privkey, UnsignedChannelUpdate { @@ -4349,8 +4454,8 @@ mod tests { // we calculated fees on a higher value, resulting in us ignoring such paths. let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, _, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[2]); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]); // We modify the graph to set the htlc_maximum of channel 2 to below the value we wish to // send. @@ -4411,8 +4516,8 @@ mod tests { // resulting in us thinking there is no possible path, even if other paths exist. let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[2]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We modify the graph to set the htlc_minimum of channel 2 and 4 as needed - channel 2 // gets an htlc_maximum_msat of 80_000 and channel 4 an htlc_minimum_msat of 90_000. We @@ -4478,8 +4583,8 @@ mod tests { let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let logger = Arc::new(test_utils::TestLogger::new()); let network_graph = NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash()); - let scorer = Scorer::with_fixed_penalty(0); - let payee = Payee::new(nodes[0]).with_features(InvoiceFeatures::known()); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); + let payee = Payee::from_node_id(nodes[0]).with_features(InvoiceFeatures::known()); { let route = get_route(&our_id, &payee, &network_graph, Some(&[ @@ -4516,10 +4621,10 @@ mod tests { fn prefers_shorter_route_with_higher_fees() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[6]).with_route_hints(last_hops(&nodes)); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes)); // Without penalizing each hop 100 msats, a longer path with lower fees is chosen. - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); let route = get_route( &our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer @@ -4532,7 +4637,7 @@ mod tests { // Applying a 100 msat penalty to each hop results in taking channels 7 and 10 to nodes[6] // from nodes[2] rather than channel 6, 11, and 8, even though the longer path is cheaper. - let scorer = Scorer::with_fixed_penalty(100); + let scorer = test_utils::TestScorer::with_fixed_penalty(100); let route = get_route( &our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer @@ -4548,34 +4653,34 @@ mod tests { short_channel_id: u64, } - impl routing::Score for BadChannelScorer { - fn channel_penalty_msat(&self, short_channel_id: u64, _source: &NodeId, _target: &NodeId) -> u64 { + impl Score for BadChannelScorer { + fn channel_penalty_msat(&self, short_channel_id: u64, _send_amt: u64, _chan_amt: Option, _source: &NodeId, _target: &NodeId) -> u64 { if short_channel_id == self.short_channel_id { u64::max_value() } else { 0 } } - fn payment_path_failed(&mut self, _path: &Vec, _short_channel_id: u64) {} + fn payment_path_failed(&mut self, _path: &[&RouteHop], _short_channel_id: u64) {} } struct BadNodeScorer { node_id: NodeId, } - impl routing::Score for BadNodeScorer { - fn channel_penalty_msat(&self, _short_channel_id: u64, _source: &NodeId, target: &NodeId) -> u64 { + impl Score for BadNodeScorer { + fn channel_penalty_msat(&self, _short_channel_id: u64, _send_amt: u64, _chan_amt: Option, _source: &NodeId, target: &NodeId) -> u64 { if *target == self.node_id { u64::max_value() } else { 0 } } - fn payment_path_failed(&mut self, _path: &Vec, _short_channel_id: u64) {} + fn payment_path_failed(&mut self, _path: &[&RouteHop], _short_channel_id: u64) {} } #[test] fn avoids_routing_through_bad_channels_and_nodes() { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); - let payee = Payee::new(nodes[6]).with_route_hints(last_hops(&nodes)); + let payee = Payee::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes)); // A path to nodes[6] exists when no penalties are applied to any channel. - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); let route = get_route( &our_id, &payee, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer @@ -4704,7 +4809,7 @@ mod tests { }, }; let graph = NetworkGraph::read(&mut d).unwrap(); - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // First, get 100 (source, destination) pairs for which route-getting actually succeeds... let mut seed = random_init_seed() as usize; @@ -4715,7 +4820,7 @@ mod tests { let src = &PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); seed = seed.overflowing_mul(0xdeadbeef).0; let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); - let payee = Payee::new(dst); + let payee = Payee::from_node_id(dst); let amt = seed as u64 % 200_000_000; if get_route(src, &payee, &graph, None, amt, 42, &test_utils::TestLogger::new(), &scorer).is_ok() { continue 'load_endpoints; @@ -4735,7 +4840,7 @@ mod tests { }, }; let graph = NetworkGraph::read(&mut d).unwrap(); - let scorer = Scorer::with_fixed_penalty(0); + let scorer = test_utils::TestScorer::with_fixed_penalty(0); // First, get 100 (source, destination) pairs for which route-getting actually succeeds... let mut seed = random_init_seed() as usize; @@ -4746,7 +4851,7 @@ mod tests { let src = &PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); seed = seed.overflowing_mul(0xdeadbeef).0; let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); - let payee = Payee::new(dst).with_features(InvoiceFeatures::known()); + let payee = Payee::from_node_id(dst).with_features(InvoiceFeatures::known()); let amt = seed as u64 % 200_000_000; if get_route(src, &payee, &graph, None, amt, 42, &test_utils::TestLogger::new(), &scorer).is_ok() { continue 'load_endpoints; @@ -4786,7 +4891,7 @@ pub(crate) mod test_utils { #[cfg(all(test, feature = "unstable", not(feature = "no-std")))] mod benches { use super::*; - use routing::scorer::Scorer; + use routing::scoring::Scorer; use util::logger::{Logger, Record}; use test::Bencher; @@ -4812,7 +4917,7 @@ mod benches { let src = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); seed *= 0xdeadbeef; let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); - let payee = Payee::new(dst); + let payee = Payee::from_node_id(dst); let amt = seed as u64 % 1_000_000; if get_route(&src, &payee, &graph, None, amt, 42, &DummyLogger{}, &scorer).is_ok() { path_endpoints.push((src, dst, amt)); @@ -4825,7 +4930,7 @@ mod benches { let mut idx = 0; bench.iter(|| { let (src, dst, amt) = path_endpoints[idx % path_endpoints.len()]; - let payee = Payee::new(dst); + let payee = Payee::from_node_id(dst); assert!(get_route(&src, &payee, &graph, None, amt, 42, &DummyLogger{}, &scorer).is_ok()); idx += 1; }); @@ -4847,7 +4952,7 @@ mod benches { let src = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); seed *= 0xdeadbeef; let dst = PublicKey::from_slice(nodes.keys().skip(seed % nodes.len()).next().unwrap().as_slice()).unwrap(); - let payee = Payee::new(dst).with_features(InvoiceFeatures::known()); + let payee = Payee::from_node_id(dst).with_features(InvoiceFeatures::known()); let amt = seed as u64 % 1_000_000; if get_route(&src, &payee, &graph, None, amt, 42, &DummyLogger{}, &scorer).is_ok() { path_endpoints.push((src, dst, amt)); @@ -4860,7 +4965,7 @@ mod benches { let mut idx = 0; bench.iter(|| { let (src, dst, amt) = path_endpoints[idx % path_endpoints.len()]; - let payee = Payee::new(dst).with_features(InvoiceFeatures::known()); + let payee = Payee::from_node_id(dst).with_features(InvoiceFeatures::known()); assert!(get_route(&src, &payee, &graph, None, amt, 42, &DummyLogger{}, &scorer).is_ok()); idx += 1; });