_ Git - rapid-gossip-sync-server/blob - src/downloader.rs

   1 use std::ops::Deref;
   2 use std::sync::{Arc, RwLock};
   3
   4 use bitcoin::secp256k1::PublicKey;
   5 use lightning::events::{MessageSendEvent, MessageSendEventsProvider};
   6 use lightning::ln::features::{InitFeatures, NodeFeatures};
   7 use lightning::ln::msgs::{ChannelAnnouncement, ChannelUpdate, Init, LightningError, NodeAnnouncement, QueryChannelRange, QueryShortChannelIds, ReplyChannelRange, ReplyShortChannelIdsEnd, RoutingMessageHandler};
   8 use lightning::routing::gossip::{NetworkGraph, NodeId, P2PGossipSync};
   9 use lightning::util::logger::Logger;
  10 use tokio::sync::mpsc;
  11 use tokio::sync::mpsc::error::TrySendError;
  12
  13 use crate::types::{GossipMessage, GossipChainAccess, GossipPeerManager};
  14 use crate::verifier::ChainVerifier;
  15
  16 pub(crate) struct GossipCounter {
  17         pub(crate) channel_announcements: u64,
  18         pub(crate) channel_updates: u64,
  19         pub(crate) channel_updates_without_htlc_max_msats: u64,
  20         pub(crate) channel_announcements_with_mismatched_scripts: u64
  21 }
  22
  23 impl GossipCounter {
  24         pub(crate) fn new() -> Self {
  25                 Self {
  26                         channel_announcements: 0,
  27                         channel_updates: 0,
  28                         channel_updates_without_htlc_max_msats: 0,
  29                         channel_announcements_with_mismatched_scripts: 0,
  30                 }
  31         }
  32 }
  33
  34 pub(crate) struct GossipRouter<L: Deref + Clone + Send + Sync + 'static> where L::Target: Logger {
  35         native_router: P2PGossipSync<Arc<NetworkGraph<L>>, GossipChainAccess<L>, L>,
  36         pub(crate) counter: RwLock<GossipCounter>,
  37         sender: mpsc::Sender<GossipMessage>,
  38         verifier: Arc<ChainVerifier<L>>,
  39         outbound_gossiper: Arc<P2PGossipSync<Arc<NetworkGraph<L>>, GossipChainAccess<L>, L>>,
  40 }
  41
  42 impl<L: Deref + Clone + Send + Sync> GossipRouter<L> where L::Target: Logger {
  43         pub(crate) fn new(network_graph: Arc<NetworkGraph<L>>, sender: mpsc::Sender<GossipMessage>, logger: L) -> Self {
  44                 let outbound_gossiper = Arc::new(P2PGossipSync::new(Arc::clone(&network_graph), None, logger.clone()));
  45                 let verifier = Arc::new(ChainVerifier::new(Arc::clone(&network_graph), Arc::clone(&outbound_gossiper), logger.clone()));
  46                 Self {
  47                         native_router: P2PGossipSync::new(network_graph, Some(Arc::clone(&verifier)), logger.clone()),
  48                         outbound_gossiper,
  49                         counter: RwLock::new(GossipCounter::new()),
  50                         sender,
  51                         verifier
  52                 }
  53         }
  54
  55         pub(crate) fn set_pm(&self, peer_handler: GossipPeerManager<L>) {
  56                 self.verifier.set_ph(peer_handler);
  57         }
  58
  59         fn new_channel_announcement(&self, msg: ChannelAnnouncement) {
  60                 {
  61                         let mut counter = self.counter.write().unwrap();
  62                         counter.channel_announcements += 1;
  63                 }
  64
  65                 let gossip_message = GossipMessage::ChannelAnnouncement(msg, None);
  66                 if let Err(err) = self.sender.try_send(gossip_message) {
  67                         let gossip_message = match err { TrySendError::Full(msg)|TrySendError::Closed(msg) => msg };
  68                         tokio::task::block_in_place(move || { tokio::runtime::Handle::current().block_on(async move {
  69                                 self.sender.send(gossip_message).await.unwrap();
  70                         })});
  71                 }
  72         }
  73
  74         fn new_channel_update(&self, msg: ChannelUpdate) {
  75                 self.counter.write().unwrap().channel_updates += 1;
  76                 let gossip_message = GossipMessage::ChannelUpdate(msg, None);
  77
  78                 if let Err(err) = self.sender.try_send(gossip_message) {
  79                         let gossip_message = match err { TrySendError::Full(msg)|TrySendError::Closed(msg) => msg };
  80                         tokio::task::block_in_place(move || { tokio::runtime::Handle::current().block_on(async move {
  81                                 self.sender.send(gossip_message).await.unwrap();
  82                         })});
  83                 }
  84         }
  85 }
  86
  87 impl<L: Deref + Clone + Send + Sync> MessageSendEventsProvider for GossipRouter<L> where L::Target: Logger {
  88         fn get_and_clear_pending_msg_events(&self) -> Vec<MessageSendEvent> {
  89                 let gossip_evs = self.outbound_gossiper.get_and_clear_pending_msg_events();
  90                 for ev in gossip_evs {
  91                         match ev {
  92                                 MessageSendEvent::BroadcastChannelAnnouncement { msg, .. } => {
  93                                         self.new_channel_announcement(msg);
  94                                 },
  95                                 MessageSendEvent::BroadcastNodeAnnouncement { .. } => {},
  96                                 MessageSendEvent::BroadcastChannelUpdate { msg } => {
  97                                         self.new_channel_update(msg);
  98                                 },
  99                                 _ => { unreachable!() },
 100                         }
 101                 }
 102                 self.native_router.get_and_clear_pending_msg_events()
 103         }
 104 }
 105
 106 impl<L: Deref + Clone + Send + Sync> RoutingMessageHandler for GossipRouter<L> where L::Target: Logger {
 107         fn handle_node_announcement(&self, msg: &NodeAnnouncement) -> Result<bool, LightningError> {
 108                 self.native_router.handle_node_announcement(msg)
 109         }
 110
 111         fn handle_channel_announcement(&self, msg: &ChannelAnnouncement) -> Result<bool, LightningError> {
 112                 let res = self.native_router.handle_channel_announcement(msg)?;
 113                 self.new_channel_announcement(msg.clone());
 114                 Ok(res)
 115         }
 116
 117         fn handle_channel_update(&self, msg: &ChannelUpdate) -> Result<bool, LightningError> {
 118                 let res = self.native_router.handle_channel_update(msg)?;
 119                 self.new_channel_update(msg.clone());
 120                 Ok(res)
 121         }
 122
 123         fn processing_queue_high(&self) -> bool {
 124                 self.native_router.processing_queue_high()
 125         }
 126
 127         fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)> {
 128                 self.native_router.get_next_channel_announcement(starting_point)
 129         }
 130
 131         fn get_next_node_announcement(&self, starting_point: Option<&NodeId>) -> Option<NodeAnnouncement> {
 132                 self.native_router.get_next_node_announcement(starting_point)
 133         }
 134
 135         fn peer_connected(&self, their_node_id: &PublicKey, init: &Init, inbound: bool) -> Result<(), ()> {
 136                 self.native_router.peer_connected(their_node_id, init, inbound)
 137         }
 138
 139         fn handle_reply_channel_range(&self, their_node_id: &PublicKey, msg: ReplyChannelRange) -> Result<(), LightningError> {
 140                 self.native_router.handle_reply_channel_range(their_node_id, msg)
 141         }
 142
 143         fn handle_reply_short_channel_ids_end(&self, their_node_id: &PublicKey, msg: ReplyShortChannelIdsEnd) -> Result<(), LightningError> {
 144                 self.native_router.handle_reply_short_channel_ids_end(their_node_id, msg)
 145         }
 146
 147         fn handle_query_channel_range(&self, their_node_id: &PublicKey, msg: QueryChannelRange) -> Result<(), LightningError> {
 148                 self.native_router.handle_query_channel_range(their_node_id, msg)
 149         }
 150
 151         fn handle_query_short_channel_ids(&self, their_node_id: &PublicKey, msg: QueryShortChannelIds) -> Result<(), LightningError> {
 152                 self.native_router.handle_query_short_channel_ids(their_node_id, msg)
 153         }
 154
 155         fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures {
 156                 self.native_router.provided_init_features(their_node_id)
 157         }
 158
 159         fn provided_node_features(&self) -> NodeFeatures {
 160                 self.native_router.provided_node_features()
 161         }
 162 }