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[rust-lightning] / lightning / src / routing / gossip.rs
index dc02206db24efbece6f434832d0061c113e563bf..64f3585b95332d464b7ec593c64d88152369a36f 100644 (file)
@@ -23,6 +23,7 @@ use bitcoin::network::constants::Network;
 use bitcoin::blockdata::constants::genesis_block;
 
 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, NetAddress, MAX_VALUE_MSAT};
 use crate::ln::msgs::{ChannelAnnouncement, ChannelUpdate, NodeAnnouncement, GossipTimestampFilter};
@@ -254,7 +255,7 @@ pub struct P2PGossipSync<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref>
 where U::Target: UtxoLookup, L::Target: Logger
 {
        network_graph: G,
-       utxo_lookup: Option<U>,
+       utxo_lookup: RwLock<Option<U>>,
        #[cfg(feature = "std")]
        full_syncs_requested: AtomicUsize,
        pending_events: Mutex<Vec<MessageSendEvent>>,
@@ -273,7 +274,7 @@ where U::Target: UtxoLookup, L::Target: Logger
                        network_graph,
                        #[cfg(feature = "std")]
                        full_syncs_requested: AtomicUsize::new(0),
-                       utxo_lookup,
+                       utxo_lookup: RwLock::new(utxo_lookup),
                        pending_events: Mutex::new(vec![]),
                        logger,
                }
@@ -282,8 +283,8 @@ where U::Target: UtxoLookup, L::Target: Logger
        /// Adds a provider used to check new announcements. Does not affect
        /// existing announcements unless they are updated.
        /// Add, update or remove the provider would replace the current one.
-       pub fn add_utxo_lookup(&mut self, utxo_lookup: Option<U>) {
-               self.utxo_lookup = utxo_lookup;
+       pub fn add_utxo_lookup(&self, utxo_lookup: Option<U>) {
+               *self.utxo_lookup.write().unwrap() = utxo_lookup;
        }
 
        /// Gets a reference to the underlying [`NetworkGraph`] which was provided in
@@ -382,7 +383,7 @@ macro_rules! secp_verify_sig {
                                        err: format!("Invalid signature on {} message", $msg_type),
                                        action: ErrorAction::SendWarningMessage {
                                                msg: msgs::WarningMessage {
-                                                       channel_id: [0; 32],
+                                                       channel_id: ChannelId::new_zero(),
                                                        data: format!("Invalid signature on {} message", $msg_type),
                                                },
                                                log_level: Level::Trace,
@@ -400,7 +401,7 @@ macro_rules! get_pubkey_from_node_id {
                                err: format!("Invalid public key on {} message", $msg_type),
                                action: ErrorAction::SendWarningMessage {
                                        msg: msgs::WarningMessage {
-                                               channel_id: [0; 32],
+                                               channel_id: ChannelId::new_zero(),
                                                data: format!("Invalid public key on {} message", $msg_type),
                                        },
                                        log_level: Level::Trace
@@ -443,7 +444,7 @@ where U::Target: UtxoLookup, L::Target: Logger
        }
 
        fn handle_channel_announcement(&self, msg: &msgs::ChannelAnnouncement) -> Result<bool, LightningError> {
-               self.network_graph.update_channel_from_announcement(msg, &self.utxo_lookup)?;
+               self.network_graph.update_channel_from_announcement(msg, &*self.utxo_lookup.read().unwrap())?;
                Ok(msg.contents.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY)
        }