Merge pull request #19 from TheBlueMatt/main
[rapid-gossip-sync-server] / src / downloader.rs
index ccb75c8d6d16c570cd541778cd71e380a32018b2..4fc3d51c6c005f610af7680af999068747c54a04 100644 (file)
@@ -1,14 +1,16 @@
 use std::sync::{Arc, RwLock};
-use std::time::{SystemTime, UNIX_EPOCH};
 
 use bitcoin::secp256k1::PublicKey;
+use lightning::ln::features::{InitFeatures, NodeFeatures};
 use lightning::ln::msgs::{ChannelAnnouncement, ChannelUpdate, Init, LightningError, NodeAnnouncement, QueryChannelRange, QueryShortChannelIds, ReplyChannelRange, ReplyShortChannelIdsEnd, RoutingMessageHandler};
 use lightning::routing::gossip::{NetworkGraph, P2PGossipSync};
 use lightning::util::events::{MessageSendEvent, MessageSendEventsProvider};
 use tokio::sync::mpsc;
+use tokio::sync::mpsc::error::TrySendError;
 
-use crate::{GossipChainAccess, TestLogger};
-use crate::types::{DetectedGossipMessage, GossipMessage};
+use crate::TestLogger;
+use crate::types::{GossipMessage, GossipChainAccess};
+use crate::verifier::ChainVerifier;
 
 pub(crate) struct GossipCounter {
        pub(crate) channel_announcements: u64,
@@ -29,9 +31,19 @@ impl GossipCounter {
 }
 
 pub(crate) struct GossipRouter {
-       pub(crate) native_router: Arc<P2PGossipSync<Arc<NetworkGraph<Arc<TestLogger>>>, GossipChainAccess, Arc<TestLogger>>>,
+       native_router: P2PGossipSync<Arc<NetworkGraph<TestLogger>>, GossipChainAccess, TestLogger>,
        pub(crate) counter: RwLock<GossipCounter>,
-       pub(crate) sender: mpsc::Sender<DetectedGossipMessage>,
+       sender: mpsc::Sender<GossipMessage>,
+}
+
+impl GossipRouter {
+       pub(crate) fn new(network_graph: Arc<NetworkGraph<TestLogger>>, sender: mpsc::Sender<GossipMessage>) -> Self {
+               Self {
+                       native_router: P2PGossipSync::new(network_graph, Some(Arc::new(ChainVerifier::new())), TestLogger::new()),
+                       counter: RwLock::new(GossipCounter::new()),
+                       sender
+               }
+       }
 }
 
 impl MessageSendEventsProvider for GossipRouter {
@@ -46,61 +58,55 @@ impl RoutingMessageHandler for GossipRouter {
        }
 
        fn handle_channel_announcement(&self, msg: &ChannelAnnouncement) -> Result<bool, LightningError> {
-               let timestamp_seen = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs();
-
-               let mut counter = self.counter.write().unwrap();
-
-               let output_value = self.native_router.handle_channel_announcement(msg).map_err(|error| {
-                       let error_string = format!("{:?}", error);
-                       if error_string.contains("announced on an unknown chain"){
-                               return error;
-                       }
-                       counter.channel_announcements_with_mismatched_scripts += 1;
-                       error
-               })?;
+               let native_result = self.native_router.handle_channel_announcement(msg);
+               let output_value;
+               {
+                       let mut counter = self.counter.write().unwrap();
+                       output_value = native_result.map_err(|error| {
+                               if error.err.contains("didn't match on-chain script") {
+                                       counter.channel_announcements_with_mismatched_scripts += 1;
+                               }
+                               error
+                       })?;
+                       counter.channel_announcements += 1;
+               }
 
-               counter.channel_announcements += 1;
                let gossip_message = GossipMessage::ChannelAnnouncement(msg.clone());
-               let detected_gossip_message = DetectedGossipMessage {
-                       message: gossip_message,
-                       timestamp_seen: timestamp_seen as u32,
-               };
-               let sender = self.sender.clone();
-               tokio::spawn(async move {
-                       let _ = sender.send(detected_gossip_message).await;
-               });
+               if let Err(err) = self.sender.try_send(gossip_message) {
+                       let gossip_message = match err { TrySendError::Full(msg)|TrySendError::Closed(msg) => msg };
+                       tokio::task::block_in_place(move || { tokio::runtime::Handle::current().block_on(async move {
+                               self.sender.send(gossip_message).await.unwrap();
+                       })});
+               }
 
                Ok(output_value)
        }
 
        fn handle_channel_update(&self, msg: &ChannelUpdate) -> Result<bool, LightningError> {
-               let timestamp_seen = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs();
                let output_value = self.native_router.handle_channel_update(msg)?;
 
-               let mut counter = self.counter.write().unwrap();
-               counter.channel_updates += 1;
+               self.counter.write().unwrap().channel_updates += 1;
                let gossip_message = GossipMessage::ChannelUpdate(msg.clone());
-               let detected_gossip_message = DetectedGossipMessage {
-                       message: gossip_message,
-                       timestamp_seen: timestamp_seen as u32,
-               };
-               let sender = self.sender.clone();
-               tokio::spawn(async move {
-                       let _ = sender.send(detected_gossip_message).await;
-               });
+
+               if let Err(err) = self.sender.try_send(gossip_message) {
+                       let gossip_message = match err { TrySendError::Full(msg)|TrySendError::Closed(msg) => msg };
+                       tokio::task::block_in_place(move || { tokio::runtime::Handle::current().block_on(async move {
+                               self.sender.send(gossip_message).await.unwrap();
+                       })});
+               }
 
                Ok(output_value)
        }
 
-       fn get_next_channel_announcements(&self, starting_point: u64, batch_amount: u8) -> Vec<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)> {
-               self.native_router.get_next_channel_announcements(starting_point, batch_amount)
+       fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)> {
+               self.native_router.get_next_channel_announcement(starting_point)
        }
 
-       fn get_next_node_announcements(&self, starting_point: Option<&PublicKey>, batch_amount: u8) -> Vec<NodeAnnouncement> {
-               self.native_router.get_next_node_announcements(starting_point, batch_amount)
+       fn get_next_node_announcement(&self, starting_point: Option<&PublicKey>) -> Option<NodeAnnouncement> {
+               self.native_router.get_next_node_announcement(starting_point)
        }
 
-       fn peer_connected(&self, their_node_id: &PublicKey, init: &Init) {
+       fn peer_connected(&self, their_node_id: &PublicKey, init: &Init) -> Result<(), ()> {
                self.native_router.peer_connected(their_node_id, init)
        }
 
@@ -119,4 +125,12 @@ impl RoutingMessageHandler for GossipRouter {
        fn handle_query_short_channel_ids(&self, their_node_id: &PublicKey, msg: QueryShortChannelIds) -> Result<(), LightningError> {
                self.native_router.handle_query_short_channel_ids(their_node_id, msg)
        }
+
+       fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures {
+               self.native_router.provided_init_features(their_node_id)
+       }
+
+       fn provided_node_features(&self) -> NodeFeatures {
+               self.native_router.provided_node_features()
+       }
 }