//! Convenient utilities to create an invoice.
use {CreationError, Currency, Invoice, InvoiceBuilder, SignOrCreationError};
-use payment::{Payer, Router};
+use payment::{InFlightHtlcs, Payer, Router};
use crate::{prelude::*, Description, InvoiceDescription, Sha256};
use bech32::ToBase32;
use lightning::ln::channelmanager::{PhantomRouteHints, MIN_CLTV_EXPIRY_DELTA};
use lightning::ln::inbound_payment::{create, create_from_hash, ExpandedKey};
use lightning::ln::msgs::LightningError;
-use lightning::routing::gossip::{NetworkGraph, RoutingFees};
-use lightning::routing::router::{Route, RouteHint, RouteHintHop, RouteParameters, find_route};
-use lightning::routing::scoring::Score;
+use lightning::routing::gossip::{NetworkGraph, NodeId, RoutingFees};
+use lightning::routing::router::{Route, RouteHint, RouteHintHop, RouteParameters, find_route, RouteHop};
+use lightning::routing::scoring::{ChannelUsage, LockableScore, Score};
use lightning::util::logger::Logger;
use secp256k1::PublicKey;
use core::ops::Deref;
}
/// A [`Router`] implemented using [`find_route`].
-pub struct DefaultRouter<G: Deref<Target = NetworkGraph<L>>, L: Deref> where L::Target: Logger {
+pub struct DefaultRouter<G: Deref<Target = NetworkGraph<L>>, L: Deref, S: Deref> where
+ L::Target: Logger,
+ S::Target: for <'a> LockableScore<'a>,
+{
network_graph: G,
logger: L,
random_seed_bytes: Mutex<[u8; 32]>,
+ scorer: S
}
-impl<G: Deref<Target = NetworkGraph<L>>, L: Deref> DefaultRouter<G, L> where L::Target: Logger {
+impl<G: Deref<Target = NetworkGraph<L>>, L: Deref, S: Deref> DefaultRouter<G, L, S> where
+ L::Target: Logger,
+ S::Target: for <'a> LockableScore<'a>,
+{
/// Creates a new router using the given [`NetworkGraph`], a [`Logger`], and a randomness source
/// `random_seed_bytes`.
- pub fn new(network_graph: G, logger: L, random_seed_bytes: [u8; 32]) -> Self {
+ pub fn new(network_graph: G, logger: L, random_seed_bytes: [u8; 32], scorer: S) -> Self {
let random_seed_bytes = Mutex::new(random_seed_bytes);
- Self { network_graph, logger, random_seed_bytes }
+ Self { network_graph, logger, random_seed_bytes, scorer }
}
}
-impl<G: Deref<Target = NetworkGraph<L>>, L: Deref> Router for DefaultRouter<G, L>
-where L::Target: Logger {
- fn find_route<S: Score>(
+impl<G: Deref<Target = NetworkGraph<L>>, L: Deref, S: Deref> Router for DefaultRouter<G, L, S> where
+ L::Target: Logger,
+ S::Target: for <'a> LockableScore<'a>,
+{
+ fn find_route(
&self, payer: &PublicKey, params: &RouteParameters, _payment_hash: &PaymentHash,
- first_hops: Option<&[&ChannelDetails]>, scorer: &S
+ first_hops: Option<&[&ChannelDetails]>, inflight_htlcs: InFlightHtlcs
) -> Result<Route, LightningError> {
let random_seed_bytes = {
let mut locked_random_seed_bytes = self.random_seed_bytes.lock().unwrap();
*locked_random_seed_bytes = sha256::Hash::hash(&*locked_random_seed_bytes).into_inner();
*locked_random_seed_bytes
};
- find_route(payer, params, &self.network_graph, first_hops, &*self.logger, scorer, &random_seed_bytes)
+
+ find_route(
+ payer, params, &self.network_graph, first_hops, &*self.logger,
+ &ScorerAccountingForInFlightHtlcs::new(&mut self.scorer.lock(), inflight_htlcs),
+ &random_seed_bytes
+ )
+ }
+
+ fn notify_payment_path_failed(&self, path: Vec<&RouteHop>, short_channel_id: u64) {
+ self.scorer.lock().payment_path_failed(&path, short_channel_id);
+ }
+
+ fn notify_payment_path_successful(&self, path: Vec<&RouteHop>) {
+ self.scorer.lock().payment_path_successful(&path);
+ }
+
+ fn notify_payment_probe_successful(&self, path: Vec<&RouteHop>) {
+ self.scorer.lock().probe_successful(&path);
+ }
+
+ fn notify_payment_probe_failed(&self, path: Vec<&RouteHop>, short_channel_id: u64) {
+ self.scorer.lock().probe_failed(&path, short_channel_id);
}
}
}
}
+
+/// Used to store information about all the HTLCs that are inflight across all payment attempts.
+pub(crate) struct ScorerAccountingForInFlightHtlcs<'a, S: Score> {
+ scorer: &'a mut S,
+ /// Maps a channel's short channel id and its direction to the liquidity used up.
+ inflight_htlcs: InFlightHtlcs,
+}
+
+impl<'a, S: Score> ScorerAccountingForInFlightHtlcs<'a, S> {
+ pub(crate) fn new(scorer: &'a mut S, inflight_htlcs: InFlightHtlcs) -> Self {
+ ScorerAccountingForInFlightHtlcs {
+ scorer,
+ inflight_htlcs
+ }
+ }
+}
+
+#[cfg(c_bindings)]
+impl<'a, S:Score> lightning::util::ser::Writeable for ScorerAccountingForInFlightHtlcs<'a, S> {
+ fn write<W: lightning::util::ser::Writer>(&self, writer: &mut W) -> Result<(), std::io::Error> { self.scorer.write(writer) }
+}
+
+impl<'a, S: Score> Score for ScorerAccountingForInFlightHtlcs<'a, S> {
+ fn channel_penalty_msat(&self, short_channel_id: u64, source: &NodeId, target: &NodeId, usage: ChannelUsage) -> u64 {
+ if let Some(used_liqudity) = self.inflight_htlcs.used_liquidity_msat(
+ source, target, short_channel_id
+ ) {
+ let usage = ChannelUsage {
+ inflight_htlc_msat: usage.inflight_htlc_msat + used_liqudity,
+ ..usage
+ };
+
+ self.scorer.channel_penalty_msat(short_channel_id, source, target, usage)
+ } else {
+ self.scorer.channel_penalty_msat(short_channel_id, source, target, usage)
+ }
+ }
+
+ fn payment_path_failed(&mut self, _path: &[&RouteHop], _short_channel_id: u64) { unreachable!() }
+
+ fn payment_path_successful(&mut self, _path: &[&RouteHop]) { unreachable!() }
+
+ fn probe_failed(&mut self, _path: &[&RouteHop], _short_channel_id: u64) { unreachable!() }
+
+ fn probe_successful(&mut self, _path: &[&RouteHop]) { unreachable!() }
+}
+
+
#[cfg(test)]
mod test {
use core::time::Duration;
projects / rust-lightning / blobdiff