Fix import order in gossip.rs.

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

diff --git a/lightning/src/routing/gossip.rs b/lightning/src/routing/gossip.rs
index 045772486ba7aa150636a1e7b5420a606e87ce64..27b5d1945986b25ea98d68ec4ff50bd3d699f3ea 100644 (file)
--- a/lightning/src/routing/gossip.rs
+++ b/lightning/src/routing/gossip.rs
@@ -11,40 +11,39 @@
 
 use bitcoin::blockdata::constants::ChainHash;
 
+use bitcoin::secp256k1;
 use bitcoin::secp256k1::constants::PUBLIC_KEY_SIZE;
-use bitcoin::secp256k1::{PublicKey, Verification};
 use bitcoin::secp256k1::Secp256k1;
-use bitcoin::secp256k1;
+use bitcoin::secp256k1::{PublicKey, Verification};
 
 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
 use bitcoin::hashes::Hash;
 use bitcoin::network::constants::Network;
 
 use crate::events::{MessageSendEvent, MessageSendEventsProvider};
-use crate::ln::ChannelId;
-use crate::ln::features::{ChannelFeatures, NodeFeatures, InitFeatures};
-use crate::ln::msgs::{DecodeError, ErrorAction, Init, LightningError, RoutingMessageHandler, SocketAddress, MAX_VALUE_MSAT};
-use crate::ln::msgs::{ChannelAnnouncement, ChannelUpdate, NodeAnnouncement, GossipTimestampFilter};
-use crate::ln::msgs::{QueryChannelRange, ReplyChannelRange, QueryShortChannelIds, ReplyShortChannelIdsEnd};
+use crate::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
 use crate::ln::msgs;
+use crate::ln::msgs::{ChannelAnnouncement, ChannelUpdate, GossipTimestampFilter, NodeAnnouncement};
+use crate::ln::msgs::{DecodeError, ErrorAction, Init, LightningError, RoutingMessageHandler, SocketAddress, MAX_VALUE_MSAT};
+use crate::ln::msgs::{QueryChannelRange, QueryShortChannelIds, ReplyChannelRange, ReplyShortChannelIdsEnd};
+use crate::ln::types::ChannelId;
 use crate::routing::utxo::{self, UtxoLookup, UtxoResolver};
-use crate::util::ser::{Readable, ReadableArgs, Writeable, Writer, MaybeReadable};
-use crate::util::logger::{Logger, Level};
+use crate::util::indexed_map::{Entry as IndexedMapEntry, IndexedMap};
+use crate::util::logger::{Level, Logger};
 use crate::util::scid_utils::{block_from_scid, scid_from_parts, MAX_SCID_BLOCK};
+use crate::util::ser::{MaybeReadable, Readable, ReadableArgs, Writeable, Writer};
 use crate::util::string::PrintableString;
-use crate::util::indexed_map::{IndexedMap, Entry as IndexedMapEntry};
 
 use crate::io;
 use crate::io_extras::{copy, sink};
 use crate::prelude::*;
-use core::{cmp, fmt};
-use core::convert::TryFrom;
-use crate::sync::{RwLock, RwLockReadGuard, LockTestExt};
-#[cfg(feature = "std")]
-use core::sync::atomic::{AtomicUsize, Ordering};
 use crate::sync::Mutex;
+use crate::sync::{LockTestExt, RwLock, RwLockReadGuard};
 use core::ops::{Bound, Deref};
 use core::str::FromStr;
+#[cfg(feature = "std")]
+use core::sync::atomic::{AtomicUsize, Ordering};
+use core::{cmp, fmt};
 
 #[cfg(feature = "std")]
 use std::time::{SystemTime, UNIX_EPOCH};
@@ -880,6 +879,7 @@ impl ChannelInfo {
        /// Returns a [`DirectedChannelInfo`] for the channel directed to the given `target` from a
        /// returned `source`, or `None` if `target` is not one of the channel's counterparties.
        pub fn as_directed_to(&self, target: &NodeId) -> Option<(DirectedChannelInfo, &NodeId)> {
+               if self.one_to_two.is_none() || self.two_to_one.is_none() { return None; }
                let (direction, source, outbound) = {
                        if target == &self.node_one {
                                (self.two_to_one.as_ref(), &self.node_two, false)
@@ -889,12 +889,14 @@ impl ChannelInfo {
                                return None;
                        }
                };
-               direction.map(|dir| (DirectedChannelInfo::new(self, dir, outbound), source))
+               let dir = direction.expect("We checked that both directions are available at the start");
+               Some((DirectedChannelInfo::new(self, dir, outbound), source))
        }
 
        /// Returns a [`DirectedChannelInfo`] for the channel directed from the given `source` to a
        /// returned `target`, or `None` if `source` is not one of the channel's counterparties.
        pub fn as_directed_from(&self, source: &NodeId) -> Option<(DirectedChannelInfo, &NodeId)> {
+               if self.one_to_two.is_none() || self.two_to_one.is_none() { return None; }
                let (direction, target, outbound) = {
                        if source == &self.node_one {
                                (self.one_to_two.as_ref(), &self.node_two, true)
@@ -904,7 +906,8 @@ impl ChannelInfo {
                                return None;
                        }
                };
-               direction.map(|dir| (DirectedChannelInfo::new(self, dir, outbound), target))
+               let dir = direction.expect("We checked that both directions are available at the start");
+               Some((DirectedChannelInfo::new(self, dir, outbound), target))
        }
 
        /// Returns a [`ChannelUpdateInfo`] based on the direction implied by the channel_flag.