Update to RL master and fix PendingHTLCsForwardable
[ldk-sample] / src / main.rs
index d8b0f23b415305d6a4c07c7889067c782ba0c1ad..493a07e5be058086ce898004e2026b6a629a404d 100644 (file)
-use base64;
-use serde_json;
+pub mod bitcoind_client;
+mod cli;
+mod convert;
+mod disk;
+mod hex_utils;
 
-use lightning::chain::chaininterface::{ConfirmationTarget, FeeEstimator};
-use lightning::util::logger::{Logger, Record};
-use lightning_block_sync::http::HttpEndpoint;
-use lightning_block_sync::rpc::RpcClient;
+use crate::bitcoind_client::BitcoindClient;
+use crate::disk::FilesystemLogger;
+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 bitcoin_bech32::WitnessProgram;
+use lightning::chain;
+use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
+use lightning::chain::chainmonitor;
+use lightning::chain::keysinterface::{InMemorySigner, KeysInterface, KeysManager};
+use lightning::chain::transaction::OutPoint;
+use lightning::chain::Filter;
+use lightning::chain::Watch;
+use lightning::ln::channelmanager;
+use lightning::ln::channelmanager::{
+       ChainParameters, ChannelManagerReadArgs, PaymentHash, PaymentPreimage, SimpleArcChannelManager,
+};
+use lightning::ln::peer_handler::{MessageHandler, SimpleArcPeerManager};
+use lightning::routing::network_graph::NetGraphMsgHandler;
+use lightning::util::config::UserConfig;
+use lightning::util::events::{Event, EventsProvider};
+use lightning::util::ser::ReadableArgs;
+use lightning_background_processor::BackgroundProcessor;
+use lightning_block_sync::init;
+use lightning_block_sync::poll;
+use lightning_block_sync::SpvClient;
+use lightning_block_sync::UnboundedCache;
+use lightning_net_tokio::SocketDescriptor;
+use lightning_persister::FilesystemPersister;
+use rand::{thread_rng, Rng};
+use std::collections::HashMap;
+use std::fmt;
+use std::fs;
+use std::fs::File;
+use std::io;
+use std::io::Write;
+use std::ops::Deref;
+use std::path::Path;
+use std::sync::{Arc, Mutex};
+use std::time::{Duration, SystemTime};
+use tokio::sync::mpsc;
 
-use std::sync::Mutex;
+#[derive(PartialEq)]
+pub(crate) enum HTLCDirection {
+       Inbound,
+       Outbound,
+}
 
-pub struct BitcoindFeeEstimator {
-    bitcoind_rpc_client: Mutex<RpcClient>,
+pub(crate) enum HTLCStatus {
+       Pending,
+       Succeeded,
+       Failed,
 }
 
-impl BitcoindFeeEstimator {
-    fn new(host: String, port: u16, path: Option<String>, rpc_user: String, rpc_password: String) ->
-        std::io::Result<Self>
-    {
-        let mut http_endpoint = HttpEndpoint::for_host(host).with_port(port);
-        if let Some(p) = path {
-            http_endpoint = http_endpoint.with_path(p);
-        }
-        let rpc_credentials = base64::encode(format!("{}:{}", rpc_user, rpc_password));
-        let bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?;
-        Ok(Self {
-            bitcoind_rpc_client: Mutex::new(bitcoind_rpc_client)
-        })
-    }
+pub(crate) struct SatoshiAmount(Option<u64>);
+
+impl fmt::Display for SatoshiAmount {
+       fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+               match self.0 {
+                       Some(amt) => write!(f, "{}", amt),
+                       None => write!(f, "unknown"),
+               }
+       }
 }
 
-impl FeeEstimator for BitcoindFeeEstimator {
-    fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 {
-        let mut rpc_client_guard = self.bitcoind_rpc_client.lock().unwrap();
-        match confirmation_target {
-            ConfirmationTarget::Background => {
-                let conf_target = serde_json::json!(144);
-                let estimate_mode = serde_json::json!("ECONOMICAL");
-                let resp = rpc_client_guard.call_method("estimatesmartfee",
-                                                        &vec![conf_target, estimate_mode]).unwrap();
-                resp["feerate"].as_u64().unwrap() as u32
-            },
-            ConfirmationTarget::Normal => {
-                let conf_target = serde_json::json!(18);
-                let estimate_mode = serde_json::json!("ECONOMICAL");
-                let resp = rpc_client_guard.call_method("estimatesmartfee",
-                                                        &vec![conf_target, estimate_mode]).unwrap();
-                resp["feerate"].as_u64().unwrap() as u32
-            },
-            ConfirmationTarget::HighPriority => {
-                let conf_target = serde_json::json!(6);
-                let estimate_mode = serde_json::json!("CONSERVATIVE");
-                let resp = rpc_client_guard.call_method("estimatesmartfee",
-                                                        &vec![conf_target, estimate_mode]).unwrap();
-                resp["feerate"].as_u64().unwrap() as u32
-            },
-        }
-    }
+pub(crate) type PaymentInfoStorage = Arc<
+       Mutex<
+               HashMap<PaymentHash, (Option<PaymentPreimage>, HTLCDirection, HTLCStatus, SatoshiAmount)>,
+       >,
+>;
+
+type ChainMonitor = chainmonitor::ChainMonitor<
+       InMemorySigner,
+       Arc<dyn Filter>,
+       Arc<BitcoindClient>,
+       Arc<BitcoindClient>,
+       Arc<FilesystemLogger>,
+       Arc<FilesystemPersister>,
+>;
+
+pub(crate) type PeerManager = SimpleArcPeerManager<
+       SocketDescriptor,
+       ChainMonitor,
+       BitcoindClient,
+       BitcoindClient,
+       dyn chain::Access,
+       FilesystemLogger,
+>;
+
+pub(crate) type ChannelManager =
+       SimpleArcChannelManager<ChainMonitor, BitcoindClient, BitcoindClient, FilesystemLogger>;
+
+async fn handle_ldk_events(
+       peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
+       chain_monitor: Arc<ChainMonitor>, bitcoind_client: Arc<BitcoindClient>,
+       keys_manager: Arc<KeysManager>, payment_storage: PaymentInfoStorage, network: Network,
+) {
+       let mut pending_txs: HashMap<OutPoint, Transaction> = HashMap::new();
+       loop {
+               peer_manager.process_events();
+               let loop_channel_manager = channel_manager.clone();
+               let mut events = channel_manager.get_and_clear_pending_events();
+               events.append(&mut chain_monitor.get_and_clear_pending_events());
+               for event in events {
+                       match event {
+                               Event::FundingGenerationReady {
+                                       temporary_channel_id,
+                                       channel_value_satoshis,
+                                       output_script,
+                                       ..
+                               } => {
+                                       // Construct the raw transaction with one output, that is paid the amount of the
+                                       // channel.
+                                       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,
+                                                       Network::Signet => panic!("Signet unsupported"),
+                                               },
+                                       )
+                                       .expect("Lightning funding tx should always be to a SegWit output")
+                                       .to_address();
+                                       let mut outputs = vec![HashMap::with_capacity(1)];
+                                       outputs[0].insert(addr, channel_value_satoshis as f64 / 100_000_000.0);
+                                       let raw_tx = bitcoind_client.create_raw_transaction(outputs).await;
+
+                                       // Have your wallet put the inputs into the transaction such that the output is
+                                       // satisfied.
+                                       let funded_tx = bitcoind_client.fund_raw_transaction(raw_tx).await;
+                                       let change_output_position = funded_tx.changepos;
+                                       assert!(change_output_position == 0 || change_output_position == 1);
+
+                                       // Sign the final funding transaction and broadcast it.
+                                       let signed_tx =
+                                               bitcoind_client.sign_raw_transaction_with_wallet(funded_tx.hex).await;
+                                       assert_eq!(signed_tx.complete, true);
+                                       let final_tx: Transaction =
+                                               encode::deserialize(&hex_utils::to_vec(&signed_tx.hex).unwrap()).unwrap();
+                                       let outpoint = OutPoint {
+                                               txid: final_tx.txid(),
+                                               index: if change_output_position == 0 { 1 } else { 0 },
+                                       };
+                                       // Give the funding transaction back to LDK for opening the channel.
+                                       loop_channel_manager
+                                               .funding_transaction_generated(&temporary_channel_id, outpoint);
+                                       pending_txs.insert(outpoint, final_tx);
+                               }
+                               Event::FundingBroadcastSafe { funding_txo, .. } => {
+                                       let funding_tx = pending_txs.remove(&funding_txo).unwrap();
+                                       bitcoind_client.broadcast_transaction(&funding_tx);
+                                       println!("\nEVENT: broadcasted funding transaction");
+                                       print!("> ");
+                                       io::stdout().flush().unwrap();
+                               }
+                               Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => {
+                                       let mut payments = payment_storage.lock().unwrap();
+                                       if let Some((Some(preimage), _, _, _)) = payments.get(&payment_hash) {
+                                               assert!(loop_channel_manager.claim_funds(
+                                                       preimage.clone(),
+                                                       &payment_secret,
+                                                       amt_msat
+                                               ));
+                                               println!(
+                                                       "\nEVENT: received payment from payment_hash {} of {} satoshis",
+                                                       hex_utils::hex_str(&payment_hash.0),
+                                                       amt_msat / 1000
+                                               );
+                                               print!("> ");
+                                               io::stdout().flush().unwrap();
+                                               let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap();
+                                               *status = HTLCStatus::Succeeded;
+                                       } else {
+                                               println!("\nERROR: we received a payment but didn't know the preimage");
+                                               print!("> ");
+                                               io::stdout().flush().unwrap();
+                                               loop_channel_manager.fail_htlc_backwards(&payment_hash, &payment_secret);
+                                               payments.insert(
+                                                       payment_hash,
+                                                       (None, HTLCDirection::Inbound, HTLCStatus::Failed, SatoshiAmount(None)),
+                                               );
+                                       }
+                               }
+                               Event::PaymentSent { payment_preimage } => {
+                                       let hashed = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
+                                       let mut payments = payment_storage.lock().unwrap();
+                                       for (payment_hash, (preimage_option, _, status, amt_sat)) in payments.iter_mut()
+                                       {
+                                               if *payment_hash == hashed {
+                                                       *preimage_option = Some(payment_preimage);
+                                                       *status = HTLCStatus::Succeeded;
+                                                       println!(
+                                                               "\nEVENT: successfully sent payment of {} satoshis from \
+                                         payment hash {:?} with preimage {:?}",
+                                                               amt_sat,
+                                                               hex_utils::hex_str(&payment_hash.0),
+                                                               hex_utils::hex_str(&payment_preimage.0)
+                                                       );
+                                                       print!("> ");
+                                                       io::stdout().flush().unwrap();
+                                               }
+                                       }
+                               }
+                               Event::PaymentFailed { payment_hash, rejected_by_dest } => {
+                                       print!(
+                                               "\nEVENT: Failed to send payment to payment hash {:?}: ",
+                                               hex_utils::hex_str(&payment_hash.0)
+                                       );
+                                       if rejected_by_dest {
+                                               println!("rejected by destination node");
+                                       } else {
+                                               println!("route failed");
+                                       }
+                                       print!("> ");
+                                       io::stdout().flush().unwrap();
+
+                                       let mut payments = payment_storage.lock().unwrap();
+                                       if payments.contains_key(&payment_hash) {
+                                               let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap();
+                                               *status = HTLCStatus::Failed;
+                                       }
+                               }
+                               Event::PendingHTLCsForwardable { time_forwardable } => {
+                                       let forwarding_channel_manager = loop_channel_manager.clone();
+                                       tokio::spawn(async move {
+                                               let min = time_forwardable.as_millis() as u64;
+                                               let millis_to_sleep = thread_rng().gen_range(min, min * 5) as u64;
+                                               tokio::time::sleep(Duration::from_millis(millis_to_sleep)).await;
+                                               forwarding_channel_manager.process_pending_htlc_forwards();
+                                       });
+                               }
+                               Event::SpendableOutputs { outputs } => {
+                                       let destination_address = bitcoind_client.get_new_address().await;
+                                       let output_descriptors = &outputs.iter().map(|a| a).collect::<Vec<_>>();
+                                       let tx_feerate =
+                                               bitcoind_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_client.broadcast_transaction(&spending_tx);
+                                       // XXX maybe need to rescan and blah?
+                               }
+                       }
+               }
+               tokio::time::sleep(Duration::from_secs(1)).await;
+       }
 }
 
-fn main() {
-    let bitcoind_host = "127.0.0.1".to_string();
-    let bitcoind_port = 18443;
-    let rpc_user = "polaruser".to_string();
-    let rpc_password = "polarpass".to_string();
-    let fee_estimator = BitcoindFeeEstimator::new(bitcoind_host, bitcoind_port, None, rpc_user, rpc_password).unwrap();
-    let normal_fee = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
-    println!("VMW: {}", normal_fee);
+#[tokio::main]
+pub async fn main() {
+       let args = match cli::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();
+
+       // 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(),
+       )
+       .await
+       {
+               Ok(client) => Arc::new(client),
+               Err(e) => {
+                       println!("Failed to connect to bitcoind client: {}", e);
+                       return;
+               }
+       };
+
+       // ## Setup
+       // Step 1: Initialize the FeeEstimator
+
+       // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator.
+       let fee_estimator = bitcoind_client.clone();
+
+       // Step 2: Initialize the Logger
+       let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.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 Persist
+       let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone()));
+
+       // Step 5: Initialize the ChainMonitor
+       let chain_monitor: Arc<ChainMonitor> = Arc::new(chainmonitor::ChainMonitor::new(
+               None,
+               broadcaster.clone(),
+               logger.clone(),
+               fee_estimator.clone(),
+               persister.clone(),
+       ));
+
+       // Step 6: 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) => {
+                               f.write_all(&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()));
+
+       // Step 7: Read ChannelMonitor state from disk
+       let monitors_path = format!("{}/monitors", ldk_data_dir.clone());
+       let mut outpoint_to_channelmonitor =
+               disk::read_channelmonitors(monitors_path.to_string(), keys_manager.clone()).unwrap();
+
+       // Step 9: Initialize the ChannelManager
+       let user_config = UserConfig::default();
+       let mut restarting_node = true;
+       let (channel_manager_blockhash, mut 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 outpoint_to_channelmonitor.iter_mut() {
+                               channel_monitor_mut_references.push(&mut channel_monitor.1);
+                       }
+                       let read_args = ChannelManagerReadArgs::new(
+                               keys_manager.clone(),
+                               fee_estimator.clone(),
+                               chain_monitor.clone(),
+                               broadcaster.clone(),
+                               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 getinfo_resp = bitcoind_client.get_blockchain_info().await;
+
+                       let chain_params = ChainParameters {
+                               network: args.network,
+                               latest_hash: getinfo_resp.latest_blockhash,
+                               latest_height: getinfo_resp.latest_height,
+                       };
+                       let fresh_channel_manager = channelmanager::ChannelManager::new(
+                               fee_estimator.clone(),
+                               chain_monitor.clone(),
+                               broadcaster.clone(),
+                               logger.clone(),
+                               keys_manager.clone(),
+                               user_config,
+                               chain_params,
+                       );
+                       (getinfo_resp.latest_blockhash, fresh_channel_manager)
+               }
+       };
+
+       // Step 10: Sync ChannelMonitors and ChannelManager to chain tip
+       let mut chain_listener_channel_monitors = Vec::new();
+       let mut cache = UnboundedCache::new();
+       let mut chain_tip: Option<poll::ValidatedBlockHeader> = None;
+       if restarting_node {
+               let mut chain_listeners =
+                       vec![(channel_manager_blockhash, &mut channel_manager as &mut dyn chain::Listen)];
+
+               for (outpoint, blockhash_and_monitor) in outpoint_to_channelmonitor.drain() {
+                       let blockhash = blockhash_and_monitor.0;
+                       let channel_monitor = blockhash_and_monitor.1;
+                       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,
+                               &mut monitor_listener_info.1 as &mut dyn chain::Listen,
+                       ));
+               }
+               chain_tip = Some(
+                       init::synchronize_listeners(
+                               &mut bitcoind_client.deref(),
+                               args.network,
+                               &mut cache,
+                               chain_listeners,
+                       )
+                       .await
+                       .unwrap(),
+               );
+       }
+
+       // Step 11: Give ChannelMonitors to ChainMonitor
+       for item in chain_listener_channel_monitors.drain(..) {
+               let channel_monitor = item.1 .0;
+               let funding_outpoint = item.2;
+               chain_monitor.watch_channel(funding_outpoint, channel_monitor).unwrap();
+       }
+
+       // Step 13: Optional: Initialize the NetGraphMsgHandler
+       // XXX persist routing data
+       let genesis = genesis_block(args.network).header.block_hash();
+       let router =
+               Arc::new(NetGraphMsgHandler::new(genesis, None::<Arc<dyn chain::Access>>, logger.clone()));
+
+       // Step 14: Initialize the PeerManager
+       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 peer_manager: Arc<PeerManager> = Arc::new(PeerManager::new(
+               lightning_msg_handler,
+               keys_manager.get_node_secret(),
+               &ephemeral_bytes,
+               logger.clone(),
+       ));
+
+       // ## Running LDK
+       // Step 16: Initialize Peer Connection Handling
+
+       // We poll for events in handle_ldk_events(..) rather than waiting for them over the
+       // mpsc::channel, so we can leave the event receiver as unused.
+       let (event_ntfn_sender, _event_ntfn_receiver) = mpsc::channel(2);
+       let peer_manager_connection_handler = peer_manager.clone();
+       let event_notifier = event_ntfn_sender.clone();
+       let listening_port = args.ldk_peer_listening_port;
+       tokio::spawn(async move {
+               let listener = std::net::TcpListener::bind(format!("0.0.0.0:{}", listening_port)).unwrap();
+               loop {
+                       let tcp_stream = listener.accept().unwrap().0;
+                       lightning_net_tokio::setup_inbound(
+                               peer_manager_connection_handler.clone(),
+                               event_notifier.clone(),
+                               tcp_stream,
+                       )
+                       .await;
+               }
+       });
+
+       // Step 17: Connect and Disconnect Blocks
+       if chain_tip.is_none() {
+               chain_tip =
+                       Some(init::validate_best_block_header(&mut bitcoind_client.deref()).await.unwrap());
+       }
+       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 mut derefed = bitcoind_block_source.deref();
+               let chain_poller = poll::ChainPoller::new(&mut derefed, network);
+               let chain_listener = (chain_monitor_listener, channel_manager_listener);
+               let mut spv_client =
+                       SpvClient::new(chain_tip.unwrap(), chain_poller, &mut cache, &chain_listener);
+               loop {
+                       spv_client.poll_best_tip().await.unwrap();
+                       tokio::time::sleep(Duration::from_secs(1)).await;
+               }
+       });
+
+       // Step 17 & 18: Initialize ChannelManager persistence & Once Per Minute: ChannelManager's
+       // timer_chan_freshness_every_min() and PeerManager's timer_tick_occurred
+       let data_dir = ldk_data_dir.clone();
+       let persist_channel_manager_callback =
+               move |node: &ChannelManager| FilesystemPersister::persist_manager(data_dir.clone(), &*node);
+       BackgroundProcessor::start(
+               persist_channel_manager_callback,
+               channel_manager.clone(),
+               logger.clone(),
+       );
+
+       let peer_manager_processor = peer_manager.clone();
+       tokio::spawn(async move {
+               loop {
+                       peer_manager_processor.timer_tick_occurred();
+                       tokio::time::sleep(Duration::from_secs(60)).await;
+               }
+       });
+
+       // Step 15: Initialize LDK Event Handling
+       let peer_manager_event_listener = peer_manager.clone();
+       let channel_manager_event_listener = channel_manager.clone();
+       let chain_monitor_event_listener = chain_monitor.clone();
+       let keys_manager_listener = keys_manager.clone();
+       let payment_info: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new()));
+       let payment_info_for_events = payment_info.clone();
+       let network = args.network;
+       let bitcoind_rpc = bitcoind_client.clone();
+       tokio::spawn(async move {
+               handle_ldk_events(
+                       peer_manager_event_listener,
+                       channel_manager_event_listener,
+                       chain_monitor_event_listener,
+                       bitcoind_rpc,
+                       keys_manager_listener,
+                       payment_info_for_events,
+                       network,
+               )
+               .await;
+       });
+
+       // Reconnect to channel peers if possible.
+       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.remote_network_id {
+                                               let _ = cli::connect_peer_if_necessary(
+                                                       pubkey,
+                                                       peer_addr,
+                                                       peer_manager.clone(),
+                                                       event_ntfn_sender.clone(),
+                                               );
+                                       }
+                               }
+                       }
+               }
+               Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e),
+       }
+
+       // Start the CLI.
+       cli::poll_for_user_input(
+               peer_manager.clone(),
+               channel_manager.clone(),
+               router.clone(),
+               payment_info,
+               keys_manager.get_node_secret(),
+               event_ntfn_sender,
+               ldk_data_dir.clone(),
+               logger.clone(),
+               args.network,
+       )
+       .await;
 }