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,
+ ChainParameters, ChannelManagerReadArgs, PaymentHash, PaymentPreimage, PaymentSecret,
+ SimpleArcChannelManager,
};
use lightning::ln::peer_handler::{MessageHandler, SimpleArcPeerManager};
use lightning::routing::network_graph::NetGraphMsgHandler;
Failed,
}
-pub(crate) struct SatoshiAmount(Option<u64>);
+pub(crate) struct MillisatAmount(Option<u64>);
-impl fmt::Display for SatoshiAmount {
+impl fmt::Display for MillisatAmount {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.0 {
Some(amt) => write!(f, "{}", amt),
}
}
-pub(crate) type PaymentInfoStorage = Arc<
- Mutex<
- HashMap<PaymentHash, (Option<PaymentPreimage>, HTLCDirection, HTLCStatus, SatoshiAmount)>,
- >,
->;
+pub(crate) struct PaymentInfo {
+ preimage: Option<PaymentPreimage>,
+ secret: Option<PaymentSecret>,
+ direction: HTLCDirection,
+ status: HTLCStatus,
+ amt_msat: MillisatAmount,
+}
+
+pub(crate) type PaymentInfoStorage = Arc<Mutex<HashMap<PaymentHash, PaymentInfo>>>;
type ChainMonitor = chainmonitor::ChainMonitor<
InMemorySigner,
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,
+ 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());
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();
+ .funding_transaction_generated(&temporary_channel_id, final_tx)
+ .unwrap();
}
- Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => {
+ Event::PaymentReceived { payment_hash, .. } => {
let mut payments = payment_storage.lock().unwrap();
- if let Some((Some(preimage), _, _, _)) = payments.get(&payment_hash) {
+ if let Some(payment) = payments.get_mut(&payment_hash) {
assert!(loop_channel_manager.claim_funds(
- preimage.clone(),
- &payment_secret,
- amt_msat
+ payment.preimage.unwrap().clone(),
+ &payment.secret,
+ payment.amt_msat.0.unwrap(),
));
println!(
- "\nEVENT: received payment from payment_hash {} of {} satoshis",
+ "\nEVENT: received payment from payment_hash {} of {} millisatoshis",
hex_utils::hex_str(&payment_hash.0),
- amt_msat / 1000
+ payment.amt_msat
);
print!("> ");
io::stdout().flush().unwrap();
- let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap();
- *status = HTLCStatus::Succeeded;
+ payment.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);
+ loop_channel_manager.fail_htlc_backwards(&payment_hash, &None);
payments.insert(
payment_hash,
- (None, HTLCDirection::Inbound, HTLCStatus::Failed, SatoshiAmount(None)),
+ PaymentInfo {
+ preimage: None,
+ secret: None,
+ direction: HTLCDirection::Inbound,
+ status: HTLCStatus::Failed,
+ amt_msat: MillisatAmount(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()
- {
+ for (payment_hash, payment) in payments.iter_mut() {
if *payment_hash == hashed {
- *preimage_option = Some(payment_preimage);
- *status = HTLCStatus::Succeeded;
+ payment.preimage = Some(payment_preimage);
+ payment.status = HTLCStatus::Succeeded;
println!(
- "\nEVENT: successfully sent payment of {} satoshis from \
+ "\nEVENT: successfully sent payment of {} millisatoshis from \
payment hash {:?} with preimage {:?}",
- amt_sat,
+ payment.amt_msat,
hex_utils::hex_str(&payment_hash.0),
hex_utils::hex_str(&payment_preimage.0)
);
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;
+ let payment = payments.get_mut(&payment_hash).unwrap();
+ payment.status = HTLCStatus::Failed;
}
}
Event::PendingHTLCsForwardable { time_forwardable } => {
}
}
-#[tokio::main]
-pub async fn main() {
+async fn start_ldk() {
let args = match cli::parse_startup_args() {
Ok(user_args) => user_args,
Err(()) => return,
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();
+ let mut channelmonitors = persister.read_channelmonitors(keys_manager.clone()).unwrap();
// Step 9: Initialize the ChannelManager
let user_config = UserConfig::default();
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);
+ for (_, channel_monitor) in channelmonitors.iter_mut() {
+ channel_monitor_mut_references.push(channel_monitor);
}
let read_args = ChannelManagerReadArgs::new(
keys_manager.clone(),
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;
+ 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()),
BackgroundProcessor::start(
persist_channel_manager_callback,
channel_manager.clone(),
+ peer_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();
+ // TODO: persist payment info to disk
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,
)
.await;
}
+
+#[tokio::main]
+pub async fn main() {
+ start_ldk().await;
+}
projects / ldk-sample / blobdiff