-type PaymentInfoStorage = Arc<Mutex<HashMap<PaymentHash, (Invoice, Option<PaymentPreimage>, HTLCDirection)>>>;
-
-type ArcChainMonitor = ChainMonitor<InMemorySigner, Arc<dyn Filter>, Arc<BitcoindClient>,
-Arc<BitcoindClient>, Arc<FilesystemLogger>, Arc<FilesystemPersister>>;
-
-pub(crate) type PeerManager = SimpleArcPeerManager<SocketDescriptor, ArcChainMonitor, BitcoindClient,
-BitcoindClient, dyn chain::Access, FilesystemLogger>;
-
-pub(crate) type ChannelManager = SimpleArcChannelManager<ArcChainMonitor, BitcoindClient, BitcoindClient,
-FilesystemLogger>;
-
-
-fn handle_ldk_events(peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
- chain_monitor: Arc<ArcChainMonitor>, bitcoind_rpc_client: Arc<BitcoindClient>,
- keys_manager: Arc<KeysManager>, mut pending_txs: HashMap<OutPoint, Transaction>,
- htlcs: PaymentInfoStorage) -> HashMap<OutPoint, Transaction>
-{
- peer_manager.process_events();
- let mut check_for_more_events = true;
- while check_for_more_events {
- let loop_channel_manager = channel_manager.clone();
- check_for_more_events = false;
- let mut events = channel_manager.get_and_clear_pending_events();
- events.append(&mut chain_monitor.get_and_clear_pending_events());
- let mut rpc = bitcoind_rpc_client.bitcoind_rpc_client.lock().unwrap();
- for event in events {
- match event {
- Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis,
- output_script, .. } => {
- let addr = WitnessProgram::from_scriptpubkey(&output_script[..], match NETWORK {
- Network::Bitcoin => bitcoin_bech32::constants::Network::Bitcoin,
- Network::Testnet => bitcoin_bech32::constants::Network::Testnet,
- Network::Regtest => bitcoin_bech32::constants::Network::Regtest,
- }
- ).expect("Lightning funding tx should always be to a SegWit output").to_address();
- let outputs = format!("{{\"{}\": {}}}", addr, channel_value_satoshis as f64 / 1_000_000_00.0).to_string();
- let tx_hex = rpc.call_method("createrawtransaction", &vec![serde_json::json!(outputs)]).unwrap();
- let raw_tx = format!("\"{}\"", tx_hex.as_str().unwrap()).to_string();
- let funded_tx = rpc.call_method("fundrawtransaction", &vec![serde_json::json!(raw_tx)]).unwrap();
- let change_output_position = funded_tx["changepos"].as_i64().unwrap();
- assert!(change_output_position == 0 || change_output_position == 1);
- let funded_tx = format!("\"{}\"", funded_tx["hex"].as_str().unwrap()).to_string();
- let signed_tx = rpc.call_method("signrawtransactionwithwallet",
- &vec![serde_json::json!(funded_tx)]).unwrap();
- assert_eq!(signed_tx["complete"].as_bool().unwrap(), true);
- let final_tx: Transaction = encode::deserialize(&utils::hex_to_vec(&signed_tx["hex"].as_str().unwrap()).unwrap()).unwrap();
- let outpoint = OutPoint {
- txid: final_tx.txid(),
- index: if change_output_position == 0 { 1 } else { 0 }
- };
- loop_channel_manager.funding_transaction_generated(&temporary_channel_id, outpoint);
- pending_txs.insert(outpoint, final_tx);
- check_for_more_events = true;
- },
- Event::FundingBroadcastSafe { funding_txo, .. } => {
- let funding_tx = pending_txs.remove(&funding_txo).unwrap();
- bitcoind_rpc_client.broadcast_transaction(&funding_tx);
- },
- Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => {
- let payment_info = htlcs.lock().unwrap();
- if let Some(htlc_info) = payment_info.get(&payment_hash) {
- assert!(loop_channel_manager.claim_funds(htlc_info.1.unwrap().clone(),
- &payment_secret, amt_msat));
- } else {
- loop_channel_manager.fail_htlc_backwards(&payment_hash, &payment_secret);
- }
- check_for_more_events = true;
- },
- Event::PaymentSent { payment_preimage } => {
- let payment_info = htlcs.lock().unwrap();
- for (invoice, preimage_option, _) in payment_info.values() {
- if let Some(preimage) = preimage_option {
- if payment_preimage == *preimage {
- println!("NEW EVENT: successfully sent payment from invoice {} with preimage {}",
- invoice, utils::hex_str(&payment_preimage.0));
- }
- }
- }
- },
- Event::PaymentFailed { payment_hash, rejected_by_dest } => {
- let payment_info = htlcs.lock().unwrap();
- let htlc_info = payment_info.get(&payment_hash).unwrap();
- print!("NEW EVENT: Failed to send payment to invoice {}:", htlc_info.0);
- if rejected_by_dest {
- println!("rejected by destination node");
- } else {
- println!("route failed");
- }
- },
- Event::PendingHTLCsForwardable { .. } => {
- loop_channel_manager.process_pending_htlc_forwards();
- check_for_more_events = true;
- },
- Event::SpendableOutputs { outputs } => {
- let addr_args = vec![serde_json::json!("LDK output address")];
- let destination_address_str = rpc.call_method("getnewaddress", &addr_args).unwrap();
- let destination_address = Address::from_str(destination_address_str.as_str().unwrap()).unwrap();
- let output_descriptors = &outputs.iter().map(|a| a).collect::<Vec<_>>();
- let tx_feerate = bitcoind_rpc_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
- let spending_tx = keys_manager.spend_spendable_outputs(output_descriptors,
- Vec::new(),
- destination_address.script_pubkey(),
- tx_feerate, &Secp256k1::new()).unwrap();
- bitcoind_rpc_client.broadcast_transaction(&spending_tx);
- // XXX maybe need to rescan and blah? but contrary to what matt's saying, it
- // looks like spend_spendable's got us covered
- }
- }
- }
- }
- pending_txs
+async fn start_ldk() {
+ let args = match args::parse_startup_args() {
+ Ok(user_args) => user_args,
+ Err(()) => return,
+ };
+
+ // Initialize the LDK data directory if necessary.
+ let ldk_data_dir = format!("{}/.ldk", args.ldk_storage_dir_path);
+ fs::create_dir_all(ldk_data_dir.clone()).unwrap();
+
+ // ## Setup
+ // Step 1: Initialize the Logger
+ let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.clone()));
+
+ // Initialize our bitcoind client.
+ let bitcoind_client = match BitcoindClient::new(
+ args.bitcoind_rpc_host.clone(),
+ args.bitcoind_rpc_port,
+ args.bitcoind_rpc_username.clone(),
+ args.bitcoind_rpc_password.clone(),
+ tokio::runtime::Handle::current(),
+ Arc::clone(&logger),
+ )
+ .await
+ {
+ Ok(client) => Arc::new(client),
+ Err(e) => {
+ println!("Failed to connect to bitcoind client: {}", e);
+ return;
+ }
+ };
+
+ // Check that the bitcoind we've connected to is running the network we expect
+ let bitcoind_chain = bitcoind_client.get_blockchain_info().await.chain;
+ if bitcoind_chain
+ != match args.network {
+ bitcoin::Network::Bitcoin => "main",
+ bitcoin::Network::Testnet => "test",
+ bitcoin::Network::Regtest => "regtest",
+ bitcoin::Network::Signet => "signet",
+ } {
+ println!(
+ "Chain argument ({}) didn't match bitcoind chain ({})",
+ args.network, bitcoind_chain
+ );
+ return;
+ }
+
+ // Step 2: Initialize the FeeEstimator
+
+ // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator.
+ let fee_estimator = bitcoind_client.clone();
+
+ // Step 3: Initialize the BroadcasterInterface
+
+ // BitcoindClient implements the BroadcasterInterface trait, so it'll act as our transaction
+ // broadcaster.
+ let broadcaster = bitcoind_client.clone();
+
+ // Step 4: Initialize the KeysManager
+
+ // The key seed that we use to derive the node privkey (that corresponds to the node pubkey) and
+ // other secret key material.
+ let keys_seed_path = format!("{}/keys_seed", ldk_data_dir.clone());
+ let keys_seed = if let Ok(seed) = fs::read(keys_seed_path.clone()) {
+ assert_eq!(seed.len(), 32);
+ let mut key = [0; 32];
+ key.copy_from_slice(&seed);
+ key
+ } else {
+ let mut key = [0; 32];
+ thread_rng().fill_bytes(&mut key);
+ match File::create(keys_seed_path.clone()) {
+ Ok(mut f) => {
+ Write::write_all(&mut f, &key).expect("Failed to write node keys seed to disk");
+ f.sync_all().expect("Failed to sync node keys seed to disk");
+ }
+ Err(e) => {
+ println!("ERROR: Unable to create keys seed file {}: {}", keys_seed_path, e);
+ return;
+ }
+ }
+ key
+ };
+ let cur = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap();
+ let keys_manager = Arc::new(KeysManager::new(&keys_seed, cur.as_secs(), cur.subsec_nanos()));
+
+ let bump_tx_event_handler = Arc::new(BumpTransactionEventHandler::new(
+ Arc::clone(&broadcaster),
+ Arc::new(Wallet::new(Arc::clone(&bitcoind_client), Arc::clone(&logger))),
+ Arc::clone(&keys_manager),
+ Arc::clone(&logger),
+ ));
+
+ // Step 5: Initialize Persistence
+ let fs_store = Arc::new(FilesystemStore::new(ldk_data_dir.clone().into()));
+ let persister = Arc::new(MonitorUpdatingPersister::new(
+ Arc::clone(&fs_store),
+ Arc::clone(&logger),
+ 1000,
+ Arc::clone(&keys_manager),
+ Arc::clone(&keys_manager),
+ ));
+ // Alternatively, you can use the `FilesystemStore` as a `Persist` directly, at the cost of
+ // larger `ChannelMonitor` update writes (but no deletion or cleanup):
+ //let persister = Arc::clone(&fs_store);
+
+ // Step 6: Initialize the ChainMonitor
+ let chain_monitor: Arc<ChainMonitor> = Arc::new(chainmonitor::ChainMonitor::new(
+ None,
+ Arc::clone(&broadcaster),
+ Arc::clone(&logger),
+ Arc::clone(&fee_estimator),
+ Arc::clone(&persister),
+ ));
+
+ // Step 7: Read ChannelMonitor state from disk
+ let mut channelmonitors = persister
+ .read_all_channel_monitors_with_updates(&bitcoind_client, &bitcoind_client)
+ .unwrap();
+ // If you are using the `FilesystemStore` as a `Persist` directly, use
+ // `lightning::util::persist::read_channel_monitors` like this:
+ //read_channel_monitors(Arc::clone(&persister), Arc::clone(&keys_manager), Arc::clone(&keys_manager)).unwrap();
+
+ // Step 8: Poll for the best chain tip, which may be used by the channel manager & spv client
+ let polled_chain_tip = init::validate_best_block_header(bitcoind_client.as_ref())
+ .await
+ .expect("Failed to fetch best block header and best block");
+
+ // Step 9: Initialize routing ProbabilisticScorer
+ let network_graph_path = format!("{}/network_graph", ldk_data_dir.clone());
+ let network_graph =
+ Arc::new(disk::read_network(Path::new(&network_graph_path), args.network, logger.clone()));
+
+ let scorer_path = format!("{}/scorer", ldk_data_dir.clone());
+ let scorer = Arc::new(RwLock::new(disk::read_scorer(
+ Path::new(&scorer_path),
+ Arc::clone(&network_graph),
+ Arc::clone(&logger),
+ )));
+
+ // Step 10: Create Router
+ let scoring_fee_params = ProbabilisticScoringFeeParameters::default();
+ let router = Arc::new(DefaultRouter::new(
+ network_graph.clone(),
+ logger.clone(),
+ keys_manager.get_secure_random_bytes(),
+ scorer.clone(),
+ scoring_fee_params,
+ ));
+
+ // Step 11: Initialize the ChannelManager
+ let mut user_config = UserConfig::default();
+ user_config.channel_handshake_limits.force_announced_channel_preference = false;
+ user_config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx = true;
+ user_config.manually_accept_inbound_channels = true;
+ let mut restarting_node = true;
+ let (channel_manager_blockhash, channel_manager) = {
+ if let Ok(mut f) = fs::File::open(format!("{}/manager", ldk_data_dir.clone())) {
+ let mut channel_monitor_mut_references = Vec::new();
+ for (_, channel_monitor) in channelmonitors.iter_mut() {
+ channel_monitor_mut_references.push(channel_monitor);
+ }
+ let read_args = ChannelManagerReadArgs::new(
+ keys_manager.clone(),
+ keys_manager.clone(),
+ keys_manager.clone(),
+ fee_estimator.clone(),
+ chain_monitor.clone(),
+ broadcaster.clone(),
+ router,
+ logger.clone(),
+ user_config,
+ channel_monitor_mut_references,
+ );
+ <(BlockHash, ChannelManager)>::read(&mut f, read_args).unwrap()
+ } else {
+ // We're starting a fresh node.
+ restarting_node = false;
+
+ let polled_best_block = polled_chain_tip.to_best_block();
+ let polled_best_block_hash = polled_best_block.block_hash();
+ let chain_params =
+ ChainParameters { network: args.network, best_block: polled_best_block };
+ let fresh_channel_manager = channelmanager::ChannelManager::new(
+ fee_estimator.clone(),
+ chain_monitor.clone(),
+ broadcaster.clone(),
+ router,
+ logger.clone(),
+ keys_manager.clone(),
+ keys_manager.clone(),
+ keys_manager.clone(),
+ user_config,
+ chain_params,
+ cur.as_secs() as u32,
+ );
+ (polled_best_block_hash, fresh_channel_manager)
+ }
+ };
+
+ // Step 12: Sync ChannelMonitors and ChannelManager to chain tip
+ let mut chain_listener_channel_monitors = Vec::new();
+ let mut cache = UnboundedCache::new();
+ let chain_tip = if restarting_node {
+ let mut chain_listeners = vec![(
+ channel_manager_blockhash,
+ &channel_manager as &(dyn chain::Listen + Send + Sync),
+ )];
+
+ for (blockhash, channel_monitor) in channelmonitors.drain(..) {
+ let outpoint = channel_monitor.get_funding_txo().0;
+ chain_listener_channel_monitors.push((
+ blockhash,
+ (channel_monitor, broadcaster.clone(), fee_estimator.clone(), logger.clone()),
+ outpoint,
+ ));
+ }
+
+ for monitor_listener_info in chain_listener_channel_monitors.iter_mut() {
+ chain_listeners.push((
+ monitor_listener_info.0,
+ &monitor_listener_info.1 as &(dyn chain::Listen + Send + Sync),
+ ));
+ }
+
+ init::synchronize_listeners(
+ bitcoind_client.as_ref(),
+ args.network,
+ &mut cache,
+ chain_listeners,
+ )
+ .await
+ .unwrap()
+ } else {
+ polled_chain_tip
+ };
+
+ // Step 13: Give ChannelMonitors to ChainMonitor
+ for item in chain_listener_channel_monitors.drain(..) {
+ let channel_monitor = item.1 .0;
+ let funding_outpoint = item.2;
+ assert_eq!(
+ chain_monitor.watch_channel(funding_outpoint, channel_monitor),
+ Ok(ChannelMonitorUpdateStatus::Completed)
+ );
+ }
+
+ // Step 14: Optional: Initialize the P2PGossipSync
+ let gossip_sync =
+ Arc::new(P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger)));
+
+ // Step 15: Initialize the PeerManager
+ let channel_manager: Arc<ChannelManager> = Arc::new(channel_manager);
+ let onion_messenger: Arc<OnionMessenger> = Arc::new(OnionMessenger::new(
+ Arc::clone(&keys_manager),
+ Arc::clone(&keys_manager),
+ Arc::clone(&logger),
+ Arc::new(DefaultMessageRouter {}),
+ Arc::clone(&channel_manager),
+ IgnoringMessageHandler {},
+ ));
+ let mut ephemeral_bytes = [0; 32];
+ let current_time = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs();
+ rand::thread_rng().fill_bytes(&mut ephemeral_bytes);
+ let lightning_msg_handler = MessageHandler {
+ chan_handler: channel_manager.clone(),
+ route_handler: gossip_sync.clone(),
+ onion_message_handler: onion_messenger.clone(),
+ custom_message_handler: IgnoringMessageHandler {},
+ };
+ let peer_manager: Arc<PeerManager> = Arc::new(PeerManager::new(
+ lightning_msg_handler,
+ current_time.try_into().unwrap(),
+ &ephemeral_bytes,
+ logger.clone(),
+ Arc::clone(&keys_manager),
+ ));
+
+ // Install a GossipVerifier in in the P2PGossipSync
+ let utxo_lookup = GossipVerifier::new(
+ Arc::clone(&bitcoind_client.bitcoind_rpc_client),
+ lightning_block_sync::gossip::TokioSpawner,
+ Arc::clone(&gossip_sync),
+ Arc::clone(&peer_manager),
+ );
+ gossip_sync.add_utxo_lookup(Some(utxo_lookup));
+
+ // ## Running LDK
+ // Step 16: Initialize networking
+
+ let peer_manager_connection_handler = peer_manager.clone();
+ let listening_port = args.ldk_peer_listening_port;
+ let stop_listen_connect = Arc::new(AtomicBool::new(false));
+ let stop_listen = Arc::clone(&stop_listen_connect);
+ tokio::spawn(async move {
+ let listener = tokio::net::TcpListener::bind(format!("[::]:{}", listening_port))
+ .await
+ .expect("Failed to bind to listen port - is something else already listening on it?");
+ loop {
+ let peer_mgr = peer_manager_connection_handler.clone();
+ let tcp_stream = listener.accept().await.unwrap().0;
+ if stop_listen.load(Ordering::Acquire) {
+ return;
+ }
+ tokio::spawn(async move {
+ lightning_net_tokio::setup_inbound(
+ peer_mgr.clone(),
+ tcp_stream.into_std().unwrap(),
+ )
+ .await;
+ });
+ }
+ });
+
+ // Step 17: Connect and Disconnect Blocks
+ let channel_manager_listener = channel_manager.clone();
+ let chain_monitor_listener = chain_monitor.clone();
+ let bitcoind_block_source = bitcoind_client.clone();
+ let network = args.network;
+ tokio::spawn(async move {
+ let chain_poller = poll::ChainPoller::new(bitcoind_block_source.as_ref(), network);
+ let chain_listener = (chain_monitor_listener, channel_manager_listener);
+ let mut spv_client = SpvClient::new(chain_tip, chain_poller, &mut cache, &chain_listener);
+ loop {
+ spv_client.poll_best_tip().await.unwrap();
+ tokio::time::sleep(Duration::from_secs(1)).await;
+ }
+ });
+
+ let inbound_payments = Arc::new(Mutex::new(disk::read_payment_info(Path::new(&format!(
+ "{}/{}",
+ ldk_data_dir, INBOUND_PAYMENTS_FNAME
+ )))));
+ let outbound_payments = Arc::new(Mutex::new(disk::read_payment_info(Path::new(&format!(
+ "{}/{}",
+ ldk_data_dir, OUTBOUND_PAYMENTS_FNAME
+ )))));
+ let recent_payments_payment_hashes = channel_manager
+ .list_recent_payments()
+ .into_iter()
+ .filter_map(|p| match p {
+ RecentPaymentDetails::Pending { payment_hash, .. } => Some(payment_hash),
+ RecentPaymentDetails::Fulfilled { payment_hash, .. } => payment_hash,
+ RecentPaymentDetails::Abandoned { payment_hash, .. } => Some(payment_hash),
+ RecentPaymentDetails::AwaitingInvoice { payment_id: _ } => todo!(),
+ })
+ .collect::<Vec<PaymentHash>>();
+ for (payment_hash, payment_info) in outbound_payments
+ .lock()
+ .unwrap()
+ .payments
+ .iter_mut()
+ .filter(|(_, i)| matches!(i.status, HTLCStatus::Pending))
+ {
+ if !recent_payments_payment_hashes.contains(payment_hash) {
+ payment_info.status = HTLCStatus::Failed;
+ }
+ }
+ fs_store
+ .write("", "", OUTBOUND_PAYMENTS_FNAME, &outbound_payments.lock().unwrap().encode())
+ .unwrap();
+
+ // Step 18: Handle LDK Events
+ let channel_manager_event_listener = Arc::clone(&channel_manager);
+ let bitcoind_client_event_listener = Arc::clone(&bitcoind_client);
+ let network_graph_event_listener = Arc::clone(&network_graph);
+ let keys_manager_event_listener = Arc::clone(&keys_manager);
+ let inbound_payments_event_listener = Arc::clone(&inbound_payments);
+ let outbound_payments_event_listener = Arc::clone(&outbound_payments);
+ let fs_store_event_listener = Arc::clone(&fs_store);
+ let network = args.network;
+ let event_handler = move |event: Event| {
+ let channel_manager_event_listener = Arc::clone(&channel_manager_event_listener);
+ let bitcoind_client_event_listener = Arc::clone(&bitcoind_client_event_listener);
+ let network_graph_event_listener = Arc::clone(&network_graph_event_listener);
+ let keys_manager_event_listener = Arc::clone(&keys_manager_event_listener);
+ let bump_tx_event_handler = Arc::clone(&bump_tx_event_handler);
+ let inbound_payments_event_listener = Arc::clone(&inbound_payments_event_listener);
+ let outbound_payments_event_listener = Arc::clone(&outbound_payments_event_listener);
+ let fs_store_event_listener = Arc::clone(&fs_store_event_listener);
+ async move {
+ handle_ldk_events(
+ &channel_manager_event_listener,
+ &bitcoind_client_event_listener,
+ &network_graph_event_listener,
+ &keys_manager_event_listener,
+ &bump_tx_event_handler,
+ inbound_payments_event_listener,
+ outbound_payments_event_listener,
+ &fs_store_event_listener,
+ network,
+ event,
+ )
+ .await;
+ }
+ };
+
+ // Step 19: Persist ChannelManager and NetworkGraph
+ let persister = Arc::new(FilesystemStore::new(ldk_data_dir.clone().into()));
+
+ // Step 20: Background Processing
+ let (bp_exit, bp_exit_check) = tokio::sync::watch::channel(());
+ let mut background_processor = tokio::spawn(process_events_async(
+ Arc::clone(&persister),
+ event_handler,
+ chain_monitor.clone(),
+ channel_manager.clone(),
+ GossipSync::p2p(gossip_sync.clone()),
+ peer_manager.clone(),
+ logger.clone(),
+ Some(scorer.clone()),
+ move |t| {
+ let mut bp_exit_fut_check = bp_exit_check.clone();
+ Box::pin(async move {
+ tokio::select! {
+ _ = tokio::time::sleep(t) => false,
+ _ = bp_exit_fut_check.changed() => true,
+ }
+ })
+ },
+ false,
+ ));
+
+ // 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);
+ let stop_connect = Arc::clone(&stop_listen_connect);
+ tokio::spawn(async move {
+ let mut interval = tokio::time::interval(Duration::from_secs(1));
+ interval.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
+ 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.iter().any(|(pk, _)| id == pk))
+ {
+ if stop_connect.load(Ordering::Acquire) {
+ return;
+ }
+ 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),
+ }
+ }
+ });
+
+ // Regularly broadcast our node_announcement. This is only required (or possible) if we have
+ // some public channels.
+ let peer_man = Arc::clone(&peer_manager);
+ let chan_man = Arc::clone(&channel_manager);
+ let network = args.network;
+ tokio::spawn(async move {
+ // First wait a minute until we have some peers and maybe have opened a channel.
+ tokio::time::sleep(Duration::from_secs(60)).await;
+ // Then, update our announcement once an hour to keep it fresh but avoid unnecessary churn
+ // in the global gossip network.
+ let mut interval = tokio::time::interval(Duration::from_secs(3600));
+ loop {
+ interval.tick().await;
+ // Don't bother trying to announce if we don't have any public channls, though our
+ // peers should drop such an announcement anyway. Note that announcement may not
+ // propagate until we have a channel with 6+ confirmations.
+ if chan_man.list_channels().iter().any(|chan| chan.is_public) {
+ peer_man.broadcast_node_announcement(
+ [0; 3],
+ args.ldk_announced_node_name,
+ args.ldk_announced_listen_addr.clone(),
+ );
+ }
+ }
+ });
+
+ tokio::spawn(sweep::periodic_sweep(
+ ldk_data_dir.clone(),
+ Arc::clone(&keys_manager),
+ Arc::clone(&logger),
+ Arc::clone(&persister),
+ Arc::clone(&bitcoind_client),
+ Arc::clone(&channel_manager),
+ ));
+
+ // Start the CLI.
+ let cli_channel_manager = Arc::clone(&channel_manager);
+ let cli_persister = Arc::clone(&persister);
+ let cli_logger = Arc::clone(&logger);
+ let cli_peer_manager = Arc::clone(&peer_manager);
+ let cli_poll = tokio::task::spawn_blocking(move || {
+ cli::poll_for_user_input(
+ cli_peer_manager,
+ cli_channel_manager,
+ keys_manager,
+ network_graph,
+ onion_messenger,
+ inbound_payments,
+ outbound_payments,
+ ldk_data_dir,
+ network,
+ cli_logger,
+ cli_persister,
+ )
+ });
+
+ // Exit if either CLI polling exits or the background processor exits (which shouldn't happen
+ // unless we fail to write to the filesystem).
+ let mut bg_res = Ok(Ok(()));
+ tokio::select! {
+ _ = cli_poll => {},
+ bg_exit = &mut background_processor => {
+ bg_res = bg_exit;
+ },
+ }
+
+ // Disconnect our peers and stop accepting new connections. This ensures we don't continue
+ // updating our channel data after we've stopped the background processor.
+ stop_listen_connect.store(true, Ordering::Release);
+ peer_manager.disconnect_all_peers();
+
+ if let Err(e) = bg_res {
+ let persist_res = persister
+ .write(
+ persist::CHANNEL_MANAGER_PERSISTENCE_PRIMARY_NAMESPACE,
+ persist::CHANNEL_MANAGER_PERSISTENCE_SECONDARY_NAMESPACE,
+ persist::CHANNEL_MANAGER_PERSISTENCE_KEY,
+ &channel_manager.encode(),
+ )
+ .unwrap();
+ use lightning::util::logger::Logger;
+ lightning::log_error!(
+ &*logger,
+ "Last-ditch ChannelManager persistence result: {:?}",
+ persist_res
+ );
+ panic!(
+ "ERR: background processing stopped with result {:?}, exiting.\n\
+ Last-ditch ChannelManager persistence result {:?}",
+ e, persist_res
+ );
+ }
+
+ // Stop the background processor.
+ if !bp_exit.is_closed() {
+ bp_exit.send(()).unwrap();
+ background_processor.await.unwrap().unwrap();
+ }