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