Merge pull request #2697 from jkczyz/2023-10-offer-functional-tests

[rust-lightning] / lightning / src / routing / gossip.rs

diff --git a/lightning/src/routing/gossip.rs b/lightning/src/routing/gossip.rs
index 68bc7945acd9bb659bf530a6752e351ab14e0681..9c8fd40af1358f1e1c8ae04646607da68a4e7abe 100644 (file)
--- a/lightning/src/routing/gossip.rs
+++ b/lightning/src/routing/gossip.rs
@@ -990,59 +990,55 @@ impl Readable for ChannelInfo {
 pub struct DirectedChannelInfo<'a> {
        channel: &'a ChannelInfo,
        direction: &'a ChannelUpdateInfo,
-       htlc_maximum_msat: u64,
-       effective_capacity: EffectiveCapacity,
-       /// Outbound from the perspective of `node_one`.
-       ///
-       /// If true, the channel is considered to be outbound from `node_one` perspective.
-       /// If false, the channel is considered to be outbound from `node_two` perspective.
-       ///
-       /// [`ChannelInfo::node_one`]
-       /// [`ChannelInfo::node_two`]
-       outbound: bool,
+       /// The direction this channel is in - if set, it indicates that we're traversing the channel
+       /// from [`ChannelInfo::node_one`] to [`ChannelInfo::node_two`].
+       from_node_one: bool,
 }
 
 impl<'a> DirectedChannelInfo<'a> {
        #[inline]
-       fn new(channel: &'a ChannelInfo, direction: &'a ChannelUpdateInfo, outbound: bool) -> Self {
-               let mut htlc_maximum_msat = direction.htlc_maximum_msat;
-               let capacity_msat = channel.capacity_sats.map(|capacity_sats| capacity_sats * 1000);
-
-               let effective_capacity = match capacity_msat {
-                       Some(capacity_msat) => {
-                               htlc_maximum_msat = cmp::min(htlc_maximum_msat, capacity_msat);
-                               EffectiveCapacity::Total { capacity_msat, htlc_maximum_msat }
-                       },
-                       None => EffectiveCapacity::AdvertisedMaxHTLC { amount_msat: htlc_maximum_msat },
-               };
-
-               Self {
-                       channel, direction, htlc_maximum_msat, effective_capacity, outbound
-               }
+       fn new(channel: &'a ChannelInfo, direction: &'a ChannelUpdateInfo, from_node_one: bool) -> Self {
+               Self { channel, direction, from_node_one }
        }
 
        /// Returns information for the channel.
        #[inline]
        pub fn channel(&self) -> &'a ChannelInfo { self.channel }
 
-       /// Returns the maximum HTLC amount allowed over the channel in the direction.
-       #[inline]
-       pub fn htlc_maximum_msat(&self) -> u64 {
-               self.htlc_maximum_msat
-       }
-
        /// Returns the [`EffectiveCapacity`] of the channel in the direction.
        ///
        /// This is either the total capacity from the funding transaction, if known, or the
        /// `htlc_maximum_msat` for the direction as advertised by the gossip network, if known,
        /// otherwise.
+       #[inline]
        pub fn effective_capacity(&self) -> EffectiveCapacity {
-               self.effective_capacity
+               let mut htlc_maximum_msat = self.direction().htlc_maximum_msat;
+               let capacity_msat = self.channel.capacity_sats.map(|capacity_sats| capacity_sats * 1000);
+
+               match capacity_msat {
+                       Some(capacity_msat) => {
+                               htlc_maximum_msat = cmp::min(htlc_maximum_msat, capacity_msat);
+                               EffectiveCapacity::Total { capacity_msat, htlc_maximum_msat }
+                       },
+                       None => EffectiveCapacity::AdvertisedMaxHTLC { amount_msat: htlc_maximum_msat },
+               }
        }
 
        /// Returns information for the direction.
        #[inline]
        pub(super) fn direction(&self) -> &'a ChannelUpdateInfo { self.direction }
+
+       /// Returns the `node_id` of the source hop.
+       ///
+       /// Refers to the `node_id` forwarding the payment to the next hop.
+       #[inline]
+       pub(super) fn source(&self) -> &'a NodeId { if self.from_node_one { &self.channel.node_one } else { &self.channel.node_two } }
+
+       /// Returns the `node_id` of the target hop.
+       ///
+       /// Refers to the `node_id` receiving the payment from the previous hop.
+       #[inline]
+       pub(super) fn target(&self) -> &'a NodeId { if self.from_node_one { &self.channel.node_two } else { &self.channel.node_one } }
 }
 
 impl<'a> fmt::Debug for DirectedChannelInfo<'a> {
@@ -1849,7 +1845,7 @@ impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
                                // NOTE: In the case of no-std, we won't have access to the current UNIX time at the time of removal,
                                // so we'll just set the removal time here to the current UNIX time on the very next invocation
                                // of this function.
-                               #[cfg(feature = "no-std")]
+                               #[cfg(not(feature = "std"))]
                                {
                                        let mut tracked_time = Some(current_time_unix);
                                        core::mem::swap(time, &mut tracked_time);