_ 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, SystemTime, UNIX_EPOCH};
   4
   5 use bitcoin::hashes::hex::ToHex;
   6 use bitcoin::secp256k1::{PublicKey, SecretKey};
   7 use futures::executor;
   8 use lightning;
   9 use lightning::ln::peer_handler::{
  10         ErroringMessageHandler, IgnoringMessageHandler, MessageHandler, PeerManager,
  11 };
  12 use lightning::routing::gossip::{NetworkGraph, P2PGossipSync};
  13 use rand::{Rng, thread_rng};
  14 use tokio::sync::mpsc;
  15
  16 use crate::{config, TestLogger};
  17 use crate::downloader::{GossipCounter, GossipRouter};
  18 use crate::types::{DetectedGossipMessage, GossipChainAccess, GossipMessage, GossipPeerManager};
  19 use crate::verifier::ChainVerifier;
  20
  21 pub(crate) async fn download_gossip(persistence_sender: mpsc::Sender<DetectedGossipMessage>, network_graph: Arc<NetworkGraph<Arc<TestLogger>>>) {
  22         let mut key = [0; 32];
  23         let mut random_data = [0; 32];
  24         thread_rng().fill_bytes(&mut key);
  25         thread_rng().fill_bytes(&mut random_data);
  26         let our_node_secret = SecretKey::from_slice(&key).unwrap();
  27
  28         let _arc_chain_access = None::<GossipChainAccess>;
  29         let arc_chain_access = Some(Arc::new(ChainVerifier::new()));
  30         let ignorer = IgnoringMessageHandler {};
  31         let arc_ignorer = Arc::new(ignorer);
  32
  33         let errorer = ErroringMessageHandler::new();
  34         let arc_errorer = Arc::new(errorer);
  35
  36         let logger = TestLogger::new();
  37         let arc_logger = Arc::new(logger);
  38
  39         let router = P2PGossipSync::new(
  40                 network_graph.clone(),
  41                 arc_chain_access,
  42                 Arc::clone(&arc_logger),
  43         );
  44         let arc_router = Arc::new(router);
  45         let wrapped_router = GossipRouter {
  46                 native_router: arc_router,
  47                 counter: RwLock::new(GossipCounter::new()),
  48                 sender: persistence_sender.clone(),
  49         };
  50         let arc_wrapped_router = Arc::new(wrapped_router);
  51
  52         let message_handler = MessageHandler {
  53                 chan_handler: arc_errorer,
  54                 route_handler: arc_wrapped_router.clone(),
  55         };
  56         let peer_handler = PeerManager::new(
  57                 message_handler,
  58                 our_node_secret,
  59                 &random_data,
  60                 Arc::clone(&arc_logger),
  61                 arc_ignorer,
  62         );
  63         let arc_peer_handler = Arc::new(peer_handler);
  64
  65         println!("Connecting to Lightning peers…");
  66         let peers = config::ln_peers();
  67         let mut connected_peer_count = 0;
  68
  69         for current_peer in peers {
  70                 let initial_connection_succeeded = monitor_peer_connection(current_peer, Arc::clone(&arc_peer_handler));
  71                 if initial_connection_succeeded {
  72                         connected_peer_count += 1;
  73                 }
  74         }
  75
  76         if connected_peer_count < 1 {
  77                 panic!("Failed to connect to any peer.");
  78         }
  79
  80         println!("Connected to {} Lightning peers!", connected_peer_count);
  81
  82         let local_router = arc_wrapped_router.clone();
  83         let local_persistence_sender = persistence_sender.clone();
  84         tokio::spawn(async move {
  85                 let mut previous_announcement_count = 0u64;
  86                 let mut previous_update_count = 0u64;
  87                 let mut is_caught_up_with_gossip = false;
  88
  89                 let mut i = 0u32;
  90                 let mut latest_new_gossip_time = Instant::now();
  91                 let mut needs_to_notify_persister = false;
  92
  93                 loop {
  94                         i += 1; // count the background activity
  95                         let sleep = tokio::time::sleep(Duration::from_secs(5));
  96                         sleep.await;
  97
  98                         let current_timestamp = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs();
  99                         let router_clone = Arc::clone(&local_router);
 100
 101                         {
 102                                 let counter = router_clone.counter.read().unwrap();
 103                                 let total_message_count = counter.channel_announcements + counter.channel_updates;
 104                                 let new_message_count = total_message_count - previous_announcement_count - previous_update_count;
 105
 106                                 let was_previously_caught_up_with_gossip = is_caught_up_with_gossip;
 107                                 // TODO: make new message threshold (20) adjust based on connected peer count
 108                                 is_caught_up_with_gossip = new_message_count < 20 && previous_announcement_count > 0 && previous_update_count > 0;
 109                                 if new_message_count > 0 {
 110                                         latest_new_gossip_time = Instant::now();
 111                                 }
 112
 113                                 // if we either aren't caught up, or just stopped/started being caught up
 114                                 if !is_caught_up_with_gossip || (is_caught_up_with_gossip != was_previously_caught_up_with_gossip) {
 115                                         println!(
 116                                                 "gossip count (iteration {}): {} (delta: {}):\n\tannouncements: {}\n\t\tmismatched scripts: {}\n\tupdates: {}\n\t\tno HTLC max: {}\n",
 117                                                 i,
 118                                                 total_message_count,
 119                                                 new_message_count,
 120                                                 counter.channel_announcements,
 121                                                 counter.channel_announcements_with_mismatched_scripts,
 122                                                 counter.channel_updates,
 123                                                 counter.channel_updates_without_htlc_max_msats
 124                                         );
 125                                 } else {
 126                                         println!("Monitoring for gossip…")
 127                                 }
 128
 129                                 if is_caught_up_with_gossip && !was_previously_caught_up_with_gossip {
 130                                         println!("caught up with gossip!");
 131                                         needs_to_notify_persister = true;
 132                                 } else if !is_caught_up_with_gossip && was_previously_caught_up_with_gossip {
 133                                         println!("Received new messages since catching up with gossip!");
 134                                 }
 135
 136                                 let continuous_caught_up_duration = latest_new_gossip_time.elapsed();
 137                                 if continuous_caught_up_duration.as_secs() > 600 {
 138                                         eprintln!("No new gossip messages in 10 minutes! Something's amiss!");
 139                                 }
 140
 141                                 previous_announcement_count = counter.channel_announcements;
 142                                 previous_update_count = counter.channel_updates;
 143                         }
 144
 145                         if needs_to_notify_persister {
 146                                 needs_to_notify_persister = false;
 147                                 let sender = local_persistence_sender.clone();
 148                                 tokio::spawn(async move {
 149                                         let _ = sender.send(DetectedGossipMessage {
 150                                                 timestamp_seen: current_timestamp as u32,
 151                                                 message: GossipMessage::InitialSyncComplete,
 152                                         }).await;
 153                                 });
 154                         }
 155                 }
 156         });
 157 }
 158
 159 fn monitor_peer_connection(current_peer: (PublicKey, SocketAddr), peer_manager: GossipPeerManager) -> bool {
 160         let peer_manager_clone = Arc::clone(&peer_manager);
 161         eprintln!("Connecting to peer {}@{}…", current_peer.0.to_hex(), current_peer.1.to_string());
 162         let connection = executor::block_on(async move {
 163                 lightning_net_tokio::connect_outbound(
 164                         peer_manager_clone,
 165                         current_peer.0,
 166                         current_peer.1,
 167                 ).await
 168         });
 169         let mut initial_connection_succeeded = false;
 170         if let Some(disconnection_future) = connection {
 171                 eprintln!("Connected to peer {}@{}!", current_peer.0.to_hex(), current_peer.1.to_string());
 172                 initial_connection_succeeded = true;
 173                 let peer_manager_clone = Arc::clone(&peer_manager);
 174                 tokio::spawn(async move {
 175                         disconnection_future.await;
 176                         eprintln!("Disconnected from peer {}@{}", current_peer.0.to_hex(), current_peer.1.to_string());
 177                         monitor_peer_connection(current_peer.clone(), peer_manager_clone);
 178                 });
 179         } else {
 180                 eprintln!("Failed to connect to peer {}@{}", current_peer.0.to_hex(), current_peer.1.to_string())
 181         };
 182         initial_connection_succeeded
 183 }