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Util-func channel removal (fixing a bug in HTLC failure updates)

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This commit is contained in:
Matt Corallo 2018-09-04 22:25:51 -04:00
parent 91b23a0754
commit 3b4c1a3662
1 changed files with 20 additions and 6 deletions
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26
src/ln/router.rs
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@ -306,12 +306,7 @@ impl RoutingMessageHandler for Router {
&msgs::HTLCFailChannelUpdate::ChannelClosed { ref short_channel_id } => {
let mut network = self.network_map.write().unwrap();
if let Some(chan) = network.channels.remove(short_channel_id) {
network.nodes.get_mut(&chan.one_to_two.src_node_id).unwrap().channels.retain(|chan_id| {
chan_id != NetworkMap::get_short_id(chan_id)
});
network.nodes.get_mut(&chan.two_to_one.src_node_id).unwrap().channels.retain(|chan_id| {
chan_id != NetworkMap::get_short_id(chan_id)
});
Self::remove_channel_in_nodes(&mut network.nodes, &chan, *short_channel_id);
}
},
}
@ -462,6 +457,25 @@ impl Router {
unimplemented!();
}
fn remove_channel_in_nodes(nodes: &mut HashMap<PublicKey, NodeInfo>, chan: &ChannelInfo, short_channel_id: u64) {
macro_rules! remove_from_node {
($node_id: expr) => {
if let Entry::Occupied(mut entry) = nodes.entry($node_id) {
entry.get_mut().channels.retain(|chan_id| {
short_channel_id != *NetworkMap::get_short_id(chan_id)
});
if entry.get().channels.is_empty() {
entry.remove_entry();
}
} else {
panic!("Had channel that pointed to unknown node (ie inconsistent network map)!");
}
}
}
remove_from_node!(chan.one_to_two.src_node_id);
remove_from_node!(chan.two_to_one.src_node_id);
}
/// Gets a route from us to the given target node.
/// Extra routing hops between known nodes and the target will be used if they are included in
/// last_hops.