use bitcoin::blockdata::constants::genesis_block;
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::consensus::encode;
-use bitcoin::hashes::sha256::Hash as Sha256;
-use bitcoin::hashes::Hash;
use bitcoin::network::constants::Network;
use bitcoin::secp256k1::Secp256k1;
use bitcoin::BlockHash;
};
use lightning::ln::peer_handler::{IgnoringMessageHandler, MessageHandler, SimpleArcPeerManager};
use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
-use lightning::routing::network_graph::NetGraphMsgHandler;
+use lightning::routing::network_graph::{NetGraphMsgHandler, NetworkGraph};
+use lightning::routing::scorer::Scorer;
use lightning::util::config::UserConfig;
use lightning::util::events::{Event, PaymentPurpose};
use lightning::util::ser::ReadableArgs;
use lightning_block_sync::poll;
use lightning_block_sync::SpvClient;
use lightning_block_sync::UnboundedCache;
+use lightning_invoice::payment;
+use lightning_invoice::utils::DefaultRouter;
use lightning_net_tokio::SocketDescriptor;
use lightning_persister::FilesystemPersister;
use rand::{thread_rng, Rng};
pub(crate) type ChannelManager =
SimpleArcChannelManager<ChainMonitor, BitcoindClient, BitcoindClient, FilesystemLogger>;
+pub(crate) type InvoicePayer<E> = payment::InvoicePayer<
+ Arc<ChannelManager>,
+ Router,
+ Arc<Mutex<Scorer>>,
+ Arc<FilesystemLogger>,
+ E,
+>;
+
+type Router = DefaultRouter<Arc<NetworkGraph>, Arc<FilesystemLogger>>;
+
async fn handle_ldk_events(
channel_manager: Arc<ChannelManager>, bitcoind_client: Arc<BitcoindClient>,
keys_manager: Arc<KeysManager>, inbound_payments: PaymentInfoStorage,
}
}
}
- Event::PaymentSent { payment_preimage } => {
- let hashed = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
+ Event::PaymentSent { payment_preimage, payment_hash, .. } => {
let mut payments = outbound_payments.lock().unwrap();
- for (payment_hash, payment) in payments.iter_mut() {
- if *payment_hash == hashed {
+ for (hash, payment) in payments.iter_mut() {
+ if *hash == *payment_hash {
payment.preimage = Some(*payment_preimage);
payment.status = HTLCStatus::Succeeded;
println!(
Event::PaymentPathFailed {
payment_hash,
rejected_by_dest,
- network_update: _,
all_paths_failed,
- path: _,
+ short_channel_id,
+ ..
} => {
print!(
- "\nEVENT: Failed to send payment{} to payment hash {:?}: ",
+ "\nEVENT: Failed to send payment{} to payment hash {:?}",
if *all_paths_failed { "" } else { " along MPP path" },
hex_utils::hex_str(&payment_hash.0)
);
+ if let Some(scid) = short_channel_id {
+ print!(" because of failure at channel {}", scid);
+ }
if *rejected_by_dest {
- println!("re-attempting the payment will not succeed");
+ println!(": re-attempting the payment will not succeed");
} else {
- println!("payment may be retried");
+ println!(": exhausted payment retry attempts");
}
print!("> ");
io::stdout().flush().unwrap();
.unwrap();
bitcoind_client.broadcast_transaction(&spending_tx);
}
- Event::ChannelClosed { channel_id, reason } => {
+ Event::ChannelClosed { channel_id, reason, user_channel_id: _ } => {
println!(
"\nEVENT: Channel {} closed due to: {:?}",
hex_utils::hex_str(channel_id),
print!("> ");
io::stdout().flush().unwrap();
}
+ Event::DiscardFunding { .. } => {
+ // A "real" node should probably "lock" the UTXOs spent in funding transactions until
+ // the funding transaction either confirms, or this event is generated.
+ }
}
}
args.bitcoind_rpc_port,
args.bitcoind_rpc_username.clone(),
args.bitcoind_rpc_password.clone(),
+ tokio::runtime::Handle::current(),
)
.await
{
// Step 11: Optional: Initialize the NetGraphMsgHandler
let genesis = genesis_block(args.network).header.block_hash();
let network_graph_path = format!("{}/network_graph", ldk_data_dir.clone());
- let network_graph = disk::read_network(Path::new(&network_graph_path), genesis);
- let router = Arc::new(NetGraphMsgHandler::new(
- network_graph,
+ let network_graph = Arc::new(disk::read_network(Path::new(&network_graph_path), genesis));
+ let network_gossip = Arc::new(NetGraphMsgHandler::new(
+ Arc::clone(&network_graph),
None::<Arc<dyn chain::Access + Send + Sync>>,
logger.clone(),
));
- let router_persist = Arc::clone(&router);
+ let network_graph_persist = Arc::clone(&network_graph);
tokio::spawn(async move {
let mut interval = tokio::time::interval(Duration::from_secs(600));
loop {
interval.tick().await;
- if disk::persist_network(Path::new(&network_graph_path), &router_persist.network_graph)
+ if disk::persist_network(Path::new(&network_graph_path), &network_graph_persist)
.is_err()
{
// Persistence errors here are non-fatal as we can just fetch the routing graph
let channel_manager: Arc<ChannelManager> = Arc::new(channel_manager);
let mut ephemeral_bytes = [0; 32];
rand::thread_rng().fill_bytes(&mut ephemeral_bytes);
- let lightning_msg_handler =
- MessageHandler { chan_handler: channel_manager.clone(), route_handler: router.clone() };
+ let lightning_msg_handler = MessageHandler {
+ chan_handler: channel_manager.clone(),
+ route_handler: network_gossip.clone(),
+ };
let peer_manager: Arc<PeerManager> = Arc::new(PeerManager::new(
lightning_msg_handler,
keys_manager.get_node_secret(),
event,
));
};
- // Step 16: Persist ChannelManager
+
+ // Step 16: Initialize routing Scorer
+ let scorer_path = format!("{}/scorer", ldk_data_dir.clone());
+ let scorer = Arc::new(Mutex::new(disk::read_scorer(Path::new(&scorer_path))));
+ let scorer_persist = Arc::clone(&scorer);
+ tokio::spawn(async move {
+ let mut interval = tokio::time::interval(Duration::from_secs(600));
+ loop {
+ interval.tick().await;
+ if disk::persist_scorer(Path::new(&scorer_path), &scorer_persist.lock().unwrap())
+ .is_err()
+ {
+ // Persistence errors here are non-fatal as channels will be re-scored as payments
+ // fail, but they may indicate a disk error which could be fatal elsewhere.
+ eprintln!("Warning: Failed to persist scorer, check your disk and permissions");
+ }
+ }
+ });
+
+ // Step 17: Create InvoicePayer
+ let router = DefaultRouter::new(network_graph.clone(), logger.clone());
+ let invoice_payer = Arc::new(InvoicePayer::new(
+ channel_manager.clone(),
+ router,
+ scorer.clone(),
+ logger.clone(),
+ event_handler,
+ payment::RetryAttempts(5),
+ ));
+
+ // Step 18: Persist ChannelManager
let data_dir = ldk_data_dir.clone();
let persist_channel_manager_callback =
move |node: &ChannelManager| FilesystemPersister::persist_manager(data_dir.clone(), &*node);
- // Step 17: Background Processing
+
+ // Step 19: Background Processing
let background_processor = BackgroundProcessor::start(
persist_channel_manager_callback,
- event_handler,
+ invoice_payer.clone(),
chain_monitor.clone(),
channel_manager.clone(),
- Some(router.clone()),
+ Some(network_gossip.clone()),
peer_manager.clone(),
logger.clone(),
);
- // Reconnect to channel peers if possible.
+ // Regularly reconnect to channel peers.
+ let connect_cm = Arc::clone(&channel_manager);
+ let connect_pm = Arc::clone(&peer_manager);
let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
- match disk::read_channel_peer_data(Path::new(&peer_data_path)) {
- Ok(mut info) => {
- for (pubkey, peer_addr) in info.drain() {
- for chan_info in channel_manager.list_channels() {
- if pubkey == chan_info.counterparty.node_id {
- let _ =
- cli::connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
+ tokio::spawn(async move {
+ let mut interval = tokio::time::interval(Duration::from_secs(1));
+ loop {
+ interval.tick().await;
+ match disk::read_channel_peer_data(Path::new(&peer_data_path)) {
+ Ok(info) => {
+ let peers = connect_pm.get_peer_node_ids();
+ for node_id in connect_cm
+ .list_channels()
+ .iter()
+ .map(|chan| chan.counterparty.node_id)
+ .filter(|id| !peers.contains(id))
+ {
+ for (pubkey, peer_addr) in info.iter() {
+ if *pubkey == node_id {
+ let _ = cli::do_connect_peer(
+ *pubkey,
+ peer_addr.clone(),
+ Arc::clone(&connect_pm),
+ )
.await;
+ }
+ }
}
}
+ Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e),
}
}
- Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e),
- }
+ });
// Regularly broadcast our node_announcement. This is only required (or possible) if we have
// some public channels, and is only useful if we have public listen address(es) to announce.
// Start the CLI.
cli::poll_for_user_input(
+ invoice_payer.clone(),
peer_manager.clone(),
channel_manager.clone(),
keys_manager.clone(),
- router.clone(),
+ network_graph.clone(),
+ scorer.clone(),
inbound_payments,
outbound_payments,
ldk_data_dir.clone(),
projects / ldk-sample / blobdiff