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

   1 use std::net::SocketAddr;
   2 use std::sync::{Arc, RwLock};
   3 use std::time::{Duration, Instant};
   4
   5 use bitcoin::hashes::hex::ToHex;
   6 use bitcoin::secp256k1::{PublicKey, SecretKey};
   7 use lightning;
   8 use lightning::ln::peer_handler::{
   9         ErroringMessageHandler, IgnoringMessageHandler, MessageHandler, PeerManager,
  10 };
  11 use lightning::routing::gossip::{NetworkGraph, P2PGossipSync};
  12 use rand::{Rng, thread_rng};
  13 use tokio::sync::mpsc;
  14
  15 use crate::{config, TestLogger};
  16 use crate::downloader::{GossipCounter, GossipRouter};
  17 use crate::types::{GossipChainAccess, GossipMessage, GossipPeerManager};
  18 use crate::verifier::ChainVerifier;
  19
  20 pub(crate) async fn download_gossip(persistence_sender: mpsc::Sender<GossipMessage>, network_graph: Arc<NetworkGraph<Arc<TestLogger>>>) {
  21         let mut key = [0; 32];
  22         let mut random_data = [0; 32];
  23         thread_rng().fill_bytes(&mut key);
  24         thread_rng().fill_bytes(&mut random_data);
  25         let our_node_secret = SecretKey::from_slice(&key).unwrap();
  26
  27         let _arc_chain_access = None::<GossipChainAccess>;
  28         let arc_chain_access = Some(Arc::new(ChainVerifier::new()));
  29         let ignorer = IgnoringMessageHandler {};
  30         let arc_ignorer = Arc::new(ignorer);
  31
  32         let errorer = ErroringMessageHandler::new();
  33         let arc_errorer = Arc::new(errorer);
  34
  35         let logger = TestLogger::new();
  36         let arc_logger = Arc::new(logger);
  37
  38         let router = P2PGossipSync::new(
  39                 network_graph.clone(),
  40                 arc_chain_access,
  41                 Arc::clone(&arc_logger),
  42         );
  43         let arc_router = Arc::new(router);
  44         let wrapped_router = GossipRouter {
  45                 native_router: arc_router,
  46                 counter: RwLock::new(GossipCounter::new()),
  47                 sender: persistence_sender.clone(),
  48         };
  49         let arc_wrapped_router = Arc::new(wrapped_router);
  50
  51         let message_handler = MessageHandler {
  52                 chan_handler: arc_errorer,
  53                 route_handler: arc_wrapped_router.clone(),
  54         };
  55         let peer_handler = PeerManager::new(
  56                 message_handler,
  57                 our_node_secret,
  58                 &random_data,
  59                 Arc::clone(&arc_logger),
  60                 arc_ignorer,
  61         );
  62         let arc_peer_handler = Arc::new(peer_handler);
  63
  64         println!("Connecting to Lightning peers…");
  65         let peers = config::ln_peers();
  66         let mut connected_peer_count = 0;
  67
  68         for current_peer in peers {
  69                 let initial_connection_succeeded = connect_peer(current_peer, Arc::clone(&arc_peer_handler)).await;
  70                 if initial_connection_succeeded {
  71                         connected_peer_count += 1;
  72                 }
  73         }
  74
  75         if connected_peer_count < 1 {
  76                 panic!("Failed to connect to any peer.");
  77         }
  78
  79         println!("Connected to {} Lightning peers!", connected_peer_count);
  80
  81         let local_router = arc_wrapped_router.clone();
  82         let local_persistence_sender = persistence_sender.clone();
  83         tokio::spawn(async move {
  84                 let mut previous_announcement_count = 0u64;
  85                 let mut previous_update_count = 0u64;
  86                 let mut is_caught_up_with_gossip = false;
  87
  88                 let mut i = 0u32;
  89                 let mut latest_new_gossip_time = Instant::now();
  90                 let mut needs_to_notify_persister = false;
  91
  92                 loop {
  93                         i += 1; // count the background activity
  94                         let sleep = tokio::time::sleep(Duration::from_secs(5));
  95                         sleep.await;
  96
  97                         let router_clone = Arc::clone(&local_router);
  98
  99                         {
 100                                 let counter = router_clone.counter.read().unwrap();
 101                                 let total_message_count = counter.channel_announcements + counter.channel_updates;
 102                                 let new_message_count = total_message_count - previous_announcement_count - previous_update_count;
 103
 104                                 let was_previously_caught_up_with_gossip = is_caught_up_with_gossip;
 105                                 // TODO: make new message threshold (20) adjust based on connected peer count
 106                                 is_caught_up_with_gossip = new_message_count < 20 && previous_announcement_count > 0 && previous_update_count > 0;
 107                                 if new_message_count > 0 {
 108                                         latest_new_gossip_time = Instant::now();
 109                                 }
 110
 111                                 // if we either aren't caught up, or just stopped/started being caught up
 112                                 if !is_caught_up_with_gossip || (is_caught_up_with_gossip != was_previously_caught_up_with_gossip) {
 113                                         println!(
 114                                                 "gossip count (iteration {}): {} (delta: {}):\n\tannouncements: {}\n\t\tmismatched scripts: {}\n\tupdates: {}\n\t\tno HTLC max: {}\n",
 115                                                 i,
 116                                                 total_message_count,
 117                                                 new_message_count,
 118                                                 counter.channel_announcements,
 119                                                 counter.channel_announcements_with_mismatched_scripts,
 120                                                 counter.channel_updates,
 121                                                 counter.channel_updates_without_htlc_max_msats
 122                                         );
 123                                 } else {
 124                                         println!("Monitoring for gossip…")
 125                                 }
 126
 127                                 if is_caught_up_with_gossip && !was_previously_caught_up_with_gossip {
 128                                         println!("caught up with gossip!");
 129                                         needs_to_notify_persister = true;
 130                                 } else if !is_caught_up_with_gossip && was_previously_caught_up_with_gossip {
 131                                         println!("Received new messages since catching up with gossip!");
 132                                 }
 133
 134                                 let continuous_caught_up_duration = latest_new_gossip_time.elapsed();
 135                                 if continuous_caught_up_duration.as_secs() > 600 {
 136                                         eprintln!("No new gossip messages in 10 minutes! Something's amiss!");
 137                                 }
 138
 139                                 previous_announcement_count = counter.channel_announcements;
 140                                 previous_update_count = counter.channel_updates;
 141                         }
 142
 143                         if needs_to_notify_persister {
 144                                 needs_to_notify_persister = false;
 145                                 local_persistence_sender.send(GossipMessage::InitialSyncComplete).await.unwrap();
 146                         }
 147                 }
 148         });
 149 }
 150
 151 async fn connect_peer(current_peer: (PublicKey, SocketAddr), peer_manager: GossipPeerManager) -> bool {
 152         eprintln!("Connecting to peer {}@{}...", current_peer.0.to_hex(), current_peer.1.to_string());
 153         let connection = lightning_net_tokio::connect_outbound(
 154                 Arc::clone(&peer_manager),
 155                 current_peer.0,
 156                 current_peer.1,
 157         ).await;
 158         if let Some(disconnection_future) = connection {
 159                 eprintln!("Connected to peer {}@{}!", current_peer.0.to_hex(), current_peer.1.to_string());
 160                 tokio::spawn(async move {
 161                         disconnection_future.await;
 162                         loop {
 163                                 eprintln!("Reconnecting to peer {}@{}...", current_peer.0.to_hex(), current_peer.1.to_string());
 164                                 if let Some(disconnection_future) = lightning_net_tokio::connect_outbound(
 165                                         Arc::clone(&peer_manager),
 166                                         current_peer.0,
 167                                         current_peer.1,
 168                                 ).await {
 169                                         disconnection_future.await;
 170                                 } else {
 171                                         tokio::time::sleep(Duration::from_secs(10)).await;
 172                                 }
 173                         }
 174                 });
 175                 true
 176         } else {
 177                 eprintln!("Failed to connect to peer {}@{}", current_peer.0.to_hex(), current_peer.1.to_string());
 178                 false
 179         }
 180 }