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

   1 use std::sync::{Arc, RwLock};
   2
   3 use bitcoin::secp256k1::PublicKey;
   4 use lightning::ln::msgs::{ChannelAnnouncement, ChannelUpdate, Init, LightningError, NodeAnnouncement, QueryChannelRange, QueryShortChannelIds, ReplyChannelRange, ReplyShortChannelIdsEnd, RoutingMessageHandler};
   5 use lightning::routing::gossip::{NetworkGraph, P2PGossipSync};
   6 use lightning::util::events::{MessageSendEvent, MessageSendEventsProvider};
   7 use tokio::sync::mpsc;
   8 use tokio::sync::mpsc::error::TrySendError;
   9
  10 use crate::TestLogger;
  11 use crate::types::{GossipMessage, GossipChainAccess};
  12 use crate::verifier::ChainVerifier;
  13
  14 pub(crate) struct GossipCounter {
  15         pub(crate) channel_announcements: u64,
  16         pub(crate) channel_updates: u64,
  17         pub(crate) channel_updates_without_htlc_max_msats: u64,
  18         pub(crate) channel_announcements_with_mismatched_scripts: u64
  19 }
  20
  21 impl GossipCounter {
  22         pub(crate) fn new() -> Self {
  23                 Self {
  24                         channel_announcements: 0,
  25                         channel_updates: 0,
  26                         channel_updates_without_htlc_max_msats: 0,
  27                         channel_announcements_with_mismatched_scripts: 0,
  28                 }
  29         }
  30 }
  31
  32 pub(crate) struct GossipRouter {
  33         native_router: P2PGossipSync<Arc<NetworkGraph<Arc<TestLogger>>>, GossipChainAccess, Arc<TestLogger>>,
  34         pub(crate) counter: RwLock<GossipCounter>,
  35         sender: mpsc::Sender<GossipMessage>,
  36 }
  37
  38 impl GossipRouter {
  39         pub(crate) fn new(network_graph: Arc<NetworkGraph<Arc<TestLogger>>>, sender: mpsc::Sender<GossipMessage>) -> Self {
  40                 Self {
  41                         native_router: P2PGossipSync::new(network_graph, Some(Arc::new(ChainVerifier::new())),
  42                                 Arc::new(TestLogger::new())),
  43                         counter: RwLock::new(GossipCounter::new()),
  44                         sender
  45                 }
  46         }
  47 }
  48
  49 impl MessageSendEventsProvider for GossipRouter {
  50         fn get_and_clear_pending_msg_events(&self) -> Vec<MessageSendEvent> {
  51                 self.native_router.get_and_clear_pending_msg_events()
  52         }
  53 }
  54
  55 impl RoutingMessageHandler for GossipRouter {
  56         fn handle_node_announcement(&self, msg: &NodeAnnouncement) -> Result<bool, LightningError> {
  57                 self.native_router.handle_node_announcement(msg)
  58         }
  59
  60         fn handle_channel_announcement(&self, msg: &ChannelAnnouncement) -> Result<bool, LightningError> {
  61                 let mut counter = self.counter.write().unwrap();
  62
  63                 let output_value = self.native_router.handle_channel_announcement(msg).map_err(|error| {
  64                         let error_string = format!("{:?}", error);
  65                         if error_string.contains("announced on an unknown chain"){
  66                                 return error;
  67                         }
  68                         counter.channel_announcements_with_mismatched_scripts += 1;
  69                         error
  70                 })?;
  71
  72                 counter.channel_announcements += 1;
  73                 let gossip_message = GossipMessage::ChannelAnnouncement(msg.clone());
  74                 if let Err(err) = self.sender.try_send(gossip_message) {
  75                         let gossip_message = match err { TrySendError::Full(msg)|TrySendError::Closed(msg) => msg };
  76                         tokio::task::block_in_place(move || { tokio::runtime::Handle::current().block_on(async move {
  77                                 self.sender.send(gossip_message).await.unwrap();
  78                         })});
  79                 }
  80
  81                 Ok(output_value)
  82         }
  83
  84         fn handle_channel_update(&self, msg: &ChannelUpdate) -> Result<bool, LightningError> {
  85                 let output_value = self.native_router.handle_channel_update(msg)?;
  86
  87                 let mut counter = self.counter.write().unwrap();
  88                 counter.channel_updates += 1;
  89                 let gossip_message = GossipMessage::ChannelUpdate(msg.clone());
  90
  91                 if let Err(err) = self.sender.try_send(gossip_message) {
  92                         let gossip_message = match err { TrySendError::Full(msg)|TrySendError::Closed(msg) => msg };
  93                         tokio::task::block_in_place(move || { tokio::runtime::Handle::current().block_on(async move {
  94                                 self.sender.send(gossip_message).await.unwrap();
  95                         })});
  96                 }
  97
  98                 Ok(output_value)
  99         }
 100
 101         fn get_next_channel_announcements(&self, starting_point: u64, batch_amount: u8) -> Vec<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)> {
 102                 self.native_router.get_next_channel_announcements(starting_point, batch_amount)
 103         }
 104
 105         fn get_next_node_announcements(&self, starting_point: Option<&PublicKey>, batch_amount: u8) -> Vec<NodeAnnouncement> {
 106                 self.native_router.get_next_node_announcements(starting_point, batch_amount)
 107         }
 108
 109         fn peer_connected(&self, their_node_id: &PublicKey, init: &Init) {
 110                 self.native_router.peer_connected(their_node_id, init)
 111         }
 112
 113         fn handle_reply_channel_range(&self, their_node_id: &PublicKey, msg: ReplyChannelRange) -> Result<(), LightningError> {
 114                 self.native_router.handle_reply_channel_range(their_node_id, msg)
 115         }
 116
 117         fn handle_reply_short_channel_ids_end(&self, their_node_id: &PublicKey, msg: ReplyShortChannelIdsEnd) -> Result<(), LightningError> {
 118                 self.native_router.handle_reply_short_channel_ids_end(their_node_id, msg)
 119         }
 120
 121         fn handle_query_channel_range(&self, their_node_id: &PublicKey, msg: QueryChannelRange) -> Result<(), LightningError> {
 122                 self.native_router.handle_query_channel_range(their_node_id, msg)
 123         }
 124
 125         fn handle_query_short_channel_ids(&self, their_node_id: &PublicKey, msg: QueryShortChannelIds) -> Result<(), LightningError> {
 126                 self.native_router.handle_query_short_channel_ids(their_node_id, msg)
 127         }
 128 }