1 //! Utilities that take care of tasks that (1) need to happen periodically to keep Rust-Lightning
2 //! running properly, and (2) either can or should be run in the background. See docs for
3 //! [`BackgroundProcessor`] for more details on the nitty-gritty.
5 #![deny(rustdoc::broken_intra_doc_links)]
6 #![deny(rustdoc::private_intra_doc_links)]
9 #![cfg_attr(not(feature = "futures"), deny(unsafe_code))]
11 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
13 #![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
15 #[cfg(any(test, feature = "std"))]
18 #[cfg(not(feature = "std"))]
21 #[macro_use] extern crate lightning;
22 extern crate lightning_rapid_gossip_sync;
25 use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
26 use lightning::chain::chainmonitor::{ChainMonitor, Persist};
27 use lightning::events::{Event, PathFailure};
28 #[cfg(feature = "std")]
29 use lightning::events::EventHandler;
30 #[cfg(any(feature = "std", feature = "futures"))]
31 use lightning::events::EventsProvider;
33 use lightning::ln::channelmanager::AChannelManager;
34 use lightning::ln::msgs::OnionMessageHandler;
35 use lightning::ln::peer_handler::APeerManager;
36 use lightning::routing::gossip::{NetworkGraph, P2PGossipSync};
37 use lightning::routing::utxo::UtxoLookup;
38 use lightning::routing::scoring::{ScoreUpdate, WriteableScore};
39 use lightning::util::logger::Logger;
40 use lightning::util::persist::Persister;
41 #[cfg(feature = "std")]
42 use lightning::util::wakers::Sleeper;
43 use lightning_rapid_gossip_sync::RapidGossipSync;
46 use core::time::Duration;
48 #[cfg(feature = "std")]
50 #[cfg(feature = "std")]
51 use core::sync::atomic::{AtomicBool, Ordering};
52 #[cfg(feature = "std")]
53 use std::thread::{self, JoinHandle};
54 #[cfg(feature = "std")]
55 use std::time::Instant;
57 #[cfg(not(feature = "std"))]
60 /// `BackgroundProcessor` takes care of tasks that (1) need to happen periodically to keep
61 /// Rust-Lightning running properly, and (2) either can or should be run in the background. Its
62 /// responsibilities are:
63 /// * Processing [`Event`]s with a user-provided [`EventHandler`].
64 /// * Monitoring whether the [`ChannelManager`] needs to be re-persisted to disk, and if so,
65 /// writing it to disk/backups by invoking the callback given to it at startup.
66 /// [`ChannelManager`] persistence should be done in the background.
67 /// * Calling [`ChannelManager::timer_tick_occurred`], [`ChainMonitor::rebroadcast_pending_claims`]
68 /// and [`PeerManager::timer_tick_occurred`] at the appropriate intervals.
69 /// * Calling [`NetworkGraph::remove_stale_channels_and_tracking`] (if a [`GossipSync`] with a
70 /// [`NetworkGraph`] is provided to [`BackgroundProcessor::start`]).
72 /// It will also call [`PeerManager::process_events`] periodically though this shouldn't be relied
73 /// upon as doing so may result in high latency.
77 /// If [`ChannelManager`] persistence fails and the persisted manager becomes out-of-date, then
78 /// there is a risk of channels force-closing on startup when the manager realizes it's outdated.
79 /// However, as long as [`ChannelMonitor`] backups are sound, no funds besides those used for
80 /// unilateral chain closure fees are at risk.
82 /// [`ChannelManager`]: lightning::ln::channelmanager::ChannelManager
83 /// [`ChannelManager::timer_tick_occurred`]: lightning::ln::channelmanager::ChannelManager::timer_tick_occurred
84 /// [`ChannelMonitor`]: lightning::chain::channelmonitor::ChannelMonitor
85 /// [`Event`]: lightning::events::Event
86 /// [`PeerManager::timer_tick_occurred`]: lightning::ln::peer_handler::PeerManager::timer_tick_occurred
87 /// [`PeerManager::process_events`]: lightning::ln::peer_handler::PeerManager::process_events
88 #[cfg(feature = "std")]
89 #[must_use = "BackgroundProcessor will immediately stop on drop. It should be stored until shutdown."]
90 pub struct BackgroundProcessor {
91 stop_thread: Arc<AtomicBool>,
92 thread_handle: Option<JoinHandle<Result<(), std::io::Error>>>,
96 const FRESHNESS_TIMER: u64 = 60;
98 const FRESHNESS_TIMER: u64 = 1;
100 #[cfg(all(not(test), not(debug_assertions)))]
101 const PING_TIMER: u64 = 10;
102 /// Signature operations take a lot longer without compiler optimisations.
103 /// Increasing the ping timer allows for this but slower devices will be disconnected if the
104 /// timeout is reached.
105 #[cfg(all(not(test), debug_assertions))]
106 const PING_TIMER: u64 = 30;
108 const PING_TIMER: u64 = 1;
111 const ONION_MESSAGE_HANDLER_TIMER: u64 = 10;
113 const ONION_MESSAGE_HANDLER_TIMER: u64 = 1;
115 /// Prune the network graph of stale entries hourly.
116 const NETWORK_PRUNE_TIMER: u64 = 60 * 60;
119 const SCORER_PERSIST_TIMER: u64 = 60 * 5;
121 const SCORER_PERSIST_TIMER: u64 = 1;
124 const FIRST_NETWORK_PRUNE_TIMER: u64 = 60;
126 const FIRST_NETWORK_PRUNE_TIMER: u64 = 1;
129 const REBROADCAST_TIMER: u64 = 30;
131 const REBROADCAST_TIMER: u64 = 1;
133 #[cfg(feature = "futures")]
134 /// core::cmp::min is not currently const, so we define a trivial (and equivalent) replacement
135 const fn min_u64(a: u64, b: u64) -> u64 { if a < b { a } else { b } }
136 #[cfg(feature = "futures")]
137 const FASTEST_TIMER: u64 = min_u64(min_u64(FRESHNESS_TIMER, PING_TIMER),
138 min_u64(SCORER_PERSIST_TIMER, min_u64(FIRST_NETWORK_PRUNE_TIMER, REBROADCAST_TIMER)));
140 /// Either [`P2PGossipSync`] or [`RapidGossipSync`].
142 P: Deref<Target = P2PGossipSync<G, U, L>>,
143 R: Deref<Target = RapidGossipSync<G, L>>,
144 G: Deref<Target = NetworkGraph<L>>,
148 where U::Target: UtxoLookup, L::Target: Logger {
149 /// Gossip sync via the lightning peer-to-peer network as defined by BOLT 7.
151 /// Rapid gossip sync from a trusted server.
158 P: Deref<Target = P2PGossipSync<G, U, L>>,
159 R: Deref<Target = RapidGossipSync<G, L>>,
160 G: Deref<Target = NetworkGraph<L>>,
163 > GossipSync<P, R, G, U, L>
164 where U::Target: UtxoLookup, L::Target: Logger {
165 fn network_graph(&self) -> Option<&G> {
167 GossipSync::P2P(gossip_sync) => Some(gossip_sync.network_graph()),
168 GossipSync::Rapid(gossip_sync) => Some(gossip_sync.network_graph()),
169 GossipSync::None => None,
173 fn prunable_network_graph(&self) -> Option<&G> {
175 GossipSync::P2P(gossip_sync) => Some(gossip_sync.network_graph()),
176 GossipSync::Rapid(gossip_sync) => {
177 if gossip_sync.is_initial_sync_complete() {
178 Some(gossip_sync.network_graph())
183 GossipSync::None => None,
188 /// This is not exported to bindings users as the bindings concretize everything and have constructors for us
189 impl<P: Deref<Target = P2PGossipSync<G, U, L>>, G: Deref<Target = NetworkGraph<L>>, U: Deref, L: Deref>
190 GossipSync<P, &RapidGossipSync<G, L>, G, U, L>
192 U::Target: UtxoLookup,
195 /// Initializes a new [`GossipSync::P2P`] variant.
196 pub fn p2p(gossip_sync: P) -> Self {
197 GossipSync::P2P(gossip_sync)
201 /// This is not exported to bindings users as the bindings concretize everything and have constructors for us
202 impl<'a, R: Deref<Target = RapidGossipSync<G, L>>, G: Deref<Target = NetworkGraph<L>>, L: Deref>
204 &P2PGossipSync<G, &'a (dyn UtxoLookup + Send + Sync), L>,
207 &'a (dyn UtxoLookup + Send + Sync),
213 /// Initializes a new [`GossipSync::Rapid`] variant.
214 pub fn rapid(gossip_sync: R) -> Self {
215 GossipSync::Rapid(gossip_sync)
219 /// This is not exported to bindings users as the bindings concretize everything and have constructors for us
222 &P2PGossipSync<&'a NetworkGraph<L>, &'a (dyn UtxoLookup + Send + Sync), L>,
223 &RapidGossipSync<&'a NetworkGraph<L>, L>,
225 &'a (dyn UtxoLookup + Send + Sync),
231 /// Initializes a new [`GossipSync::None`] variant.
232 pub fn none() -> Self {
237 fn handle_network_graph_update<L: Deref>(
238 network_graph: &NetworkGraph<L>, event: &Event
239 ) where L::Target: Logger {
240 if let Event::PaymentPathFailed {
241 failure: PathFailure::OnPath { network_update: Some(ref upd) }, .. } = event
243 network_graph.handle_network_update(upd);
247 /// Updates scorer based on event and returns whether an update occurred so we can decide whether
249 fn update_scorer<'a, S: 'static + Deref<Target = SC> + Send + Sync, SC: 'a + WriteableScore<'a>>(
250 scorer: &'a S, event: &Event, duration_since_epoch: Duration,
253 Event::PaymentPathFailed { ref path, short_channel_id: Some(scid), .. } => {
254 let mut score = scorer.write_lock();
255 score.payment_path_failed(path, *scid, duration_since_epoch);
257 Event::PaymentPathFailed { ref path, payment_failed_permanently: true, .. } => {
258 // Reached if the destination explicitly failed it back. We treat this as a successful probe
259 // because the payment made it all the way to the destination with sufficient liquidity.
260 let mut score = scorer.write_lock();
261 score.probe_successful(path, duration_since_epoch);
263 Event::PaymentPathSuccessful { path, .. } => {
264 let mut score = scorer.write_lock();
265 score.payment_path_successful(path, duration_since_epoch);
267 Event::ProbeSuccessful { path, .. } => {
268 let mut score = scorer.write_lock();
269 score.probe_successful(path, duration_since_epoch);
271 Event::ProbeFailed { path, short_channel_id: Some(scid), .. } => {
272 let mut score = scorer.write_lock();
273 score.probe_failed(path, *scid, duration_since_epoch);
280 macro_rules! define_run_body {
282 $persister: ident, $chain_monitor: ident, $process_chain_monitor_events: expr,
283 $channel_manager: ident, $process_channel_manager_events: expr,
284 $peer_manager: ident, $process_onion_message_handler_events: expr, $gossip_sync: ident,
285 $logger: ident, $scorer: ident, $loop_exit_check: expr, $await: expr, $get_timer: expr,
286 $timer_elapsed: expr, $check_slow_await: expr, $time_fetch: expr,
288 log_trace!($logger, "Calling ChannelManager's timer_tick_occurred on startup");
289 $channel_manager.get_cm().timer_tick_occurred();
290 log_trace!($logger, "Rebroadcasting monitor's pending claims on startup");
291 $chain_monitor.rebroadcast_pending_claims();
293 let mut last_freshness_call = $get_timer(FRESHNESS_TIMER);
294 let mut last_onion_message_handler_call = $get_timer(ONION_MESSAGE_HANDLER_TIMER);
295 let mut last_ping_call = $get_timer(PING_TIMER);
296 let mut last_prune_call = $get_timer(FIRST_NETWORK_PRUNE_TIMER);
297 let mut last_scorer_persist_call = $get_timer(SCORER_PERSIST_TIMER);
298 let mut last_rebroadcast_call = $get_timer(REBROADCAST_TIMER);
299 let mut have_pruned = false;
300 let mut have_decayed_scorer = false;
303 $process_channel_manager_events;
304 $process_chain_monitor_events;
305 $process_onion_message_handler_events;
307 // Note that the PeerManager::process_events may block on ChannelManager's locks,
308 // hence it comes last here. When the ChannelManager finishes whatever it's doing,
309 // we want to ensure we get into `persist_manager` as quickly as we can, especially
310 // without running the normal event processing above and handing events to users.
312 // Specifically, on an *extremely* slow machine, we may see ChannelManager start
313 // processing a message effectively at any point during this loop. In order to
314 // minimize the time between such processing completing and persisting the updated
315 // ChannelManager, we want to minimize methods blocking on a ChannelManager
316 // generally, and as a fallback place such blocking only immediately before
318 $peer_manager.as_ref().process_events();
320 // Exit the loop if the background processor was requested to stop.
321 if $loop_exit_check {
322 log_trace!($logger, "Terminating background processor.");
326 // We wait up to 100ms, but track how long it takes to detect being put to sleep,
327 // see `await_start`'s use below.
328 let mut await_start = None;
329 if $check_slow_await { await_start = Some($get_timer(1)); }
331 let await_slow = if $check_slow_await { $timer_elapsed(&mut await_start.unwrap(), 1) } else { false };
333 // Exit the loop if the background processor was requested to stop.
334 if $loop_exit_check {
335 log_trace!($logger, "Terminating background processor.");
339 if $channel_manager.get_cm().get_and_clear_needs_persistence() {
340 log_trace!($logger, "Persisting ChannelManager...");
341 $persister.persist_manager(&$channel_manager)?;
342 log_trace!($logger, "Done persisting ChannelManager.");
344 if $timer_elapsed(&mut last_freshness_call, FRESHNESS_TIMER) {
345 log_trace!($logger, "Calling ChannelManager's timer_tick_occurred");
346 $channel_manager.get_cm().timer_tick_occurred();
347 last_freshness_call = $get_timer(FRESHNESS_TIMER);
349 if $timer_elapsed(&mut last_onion_message_handler_call, ONION_MESSAGE_HANDLER_TIMER) {
350 log_trace!($logger, "Calling OnionMessageHandler's timer_tick_occurred");
351 $peer_manager.onion_message_handler().timer_tick_occurred();
352 last_onion_message_handler_call = $get_timer(ONION_MESSAGE_HANDLER_TIMER);
355 // On various platforms, we may be starved of CPU cycles for several reasons.
356 // E.g. on iOS, if we've been in the background, we will be entirely paused.
357 // Similarly, if we're on a desktop platform and the device has been asleep, we
358 // may not get any cycles.
359 // We detect this by checking if our max-100ms-sleep, above, ran longer than a
360 // full second, at which point we assume sockets may have been killed (they
361 // appear to be at least on some platforms, even if it has only been a second).
362 // Note that we have to take care to not get here just because user event
363 // processing was slow at the top of the loop. For example, the sample client
364 // may call Bitcoin Core RPCs during event handling, which very often takes
365 // more than a handful of seconds to complete, and shouldn't disconnect all our
367 log_trace!($logger, "100ms sleep took more than a second, disconnecting peers.");
368 $peer_manager.as_ref().disconnect_all_peers();
369 last_ping_call = $get_timer(PING_TIMER);
370 } else if $timer_elapsed(&mut last_ping_call, PING_TIMER) {
371 log_trace!($logger, "Calling PeerManager's timer_tick_occurred");
372 $peer_manager.as_ref().timer_tick_occurred();
373 last_ping_call = $get_timer(PING_TIMER);
376 // Note that we want to run a graph prune once not long after startup before
377 // falling back to our usual hourly prunes. This avoids short-lived clients never
378 // pruning their network graph. We run once 60 seconds after startup before
379 // continuing our normal cadence. For RGS, since 60 seconds is likely too long,
380 // we prune after an initial sync completes.
381 let prune_timer = if have_pruned { NETWORK_PRUNE_TIMER } else { FIRST_NETWORK_PRUNE_TIMER };
382 let prune_timer_elapsed = $timer_elapsed(&mut last_prune_call, prune_timer);
383 let should_prune = match $gossip_sync {
384 GossipSync::Rapid(_) => !have_pruned || prune_timer_elapsed,
385 _ => prune_timer_elapsed,
388 // The network graph must not be pruned while rapid sync completion is pending
389 if let Some(network_graph) = $gossip_sync.prunable_network_graph() {
390 if let Some(duration_since_epoch) = $time_fetch() {
391 log_trace!($logger, "Pruning and persisting network graph.");
392 network_graph.remove_stale_channels_and_tracking_with_time(duration_since_epoch.as_secs());
394 log_warn!($logger, "Not pruning network graph, consider enabling `std` or doing so manually with remove_stale_channels_and_tracking_with_time.");
395 log_trace!($logger, "Persisting network graph.");
398 if let Err(e) = $persister.persist_graph(network_graph) {
399 log_error!($logger, "Error: Failed to persist network graph, check your disk and permissions {}", e)
404 let prune_timer = if have_pruned { NETWORK_PRUNE_TIMER } else { FIRST_NETWORK_PRUNE_TIMER };
405 last_prune_call = $get_timer(prune_timer);
408 if !have_decayed_scorer {
409 if let Some(ref scorer) = $scorer {
410 if let Some(duration_since_epoch) = $time_fetch() {
411 log_trace!($logger, "Calling time_passed on scorer at startup");
412 scorer.write_lock().time_passed(duration_since_epoch);
415 have_decayed_scorer = true;
418 if $timer_elapsed(&mut last_scorer_persist_call, SCORER_PERSIST_TIMER) {
419 if let Some(ref scorer) = $scorer {
420 if let Some(duration_since_epoch) = $time_fetch() {
421 log_trace!($logger, "Calling time_passed and persisting scorer");
422 scorer.write_lock().time_passed(duration_since_epoch);
424 log_trace!($logger, "Persisting scorer");
426 if let Err(e) = $persister.persist_scorer(&scorer) {
427 log_error!($logger, "Error: Failed to persist scorer, check your disk and permissions {}", e)
430 last_scorer_persist_call = $get_timer(SCORER_PERSIST_TIMER);
433 if $timer_elapsed(&mut last_rebroadcast_call, REBROADCAST_TIMER) {
434 log_trace!($logger, "Rebroadcasting monitor's pending claims");
435 $chain_monitor.rebroadcast_pending_claims();
436 last_rebroadcast_call = $get_timer(REBROADCAST_TIMER);
440 // After we exit, ensure we persist the ChannelManager one final time - this avoids
441 // some races where users quit while channel updates were in-flight, with
442 // ChannelMonitor update(s) persisted without a corresponding ChannelManager update.
443 $persister.persist_manager(&$channel_manager)?;
445 // Persist Scorer on exit
446 if let Some(ref scorer) = $scorer {
447 $persister.persist_scorer(&scorer)?;
450 // Persist NetworkGraph on exit
451 if let Some(network_graph) = $gossip_sync.network_graph() {
452 $persister.persist_graph(network_graph)?;
459 #[cfg(feature = "futures")]
460 pub(crate) mod futures_util {
461 use core::future::Future;
462 use core::task::{Poll, Waker, RawWaker, RawWakerVTable};
464 use core::marker::Unpin;
465 pub(crate) struct Selector<
466 A: Future<Output=()> + Unpin, B: Future<Output=()> + Unpin, C: Future<Output=bool> + Unpin
472 pub(crate) enum SelectorOutput {
477 A: Future<Output=()> + Unpin, B: Future<Output=()> + Unpin, C: Future<Output=bool> + Unpin
478 > Future for Selector<A, B, C> {
479 type Output = SelectorOutput;
480 fn poll(mut self: Pin<&mut Self>, ctx: &mut core::task::Context<'_>) -> Poll<SelectorOutput> {
481 match Pin::new(&mut self.a).poll(ctx) {
482 Poll::Ready(()) => { return Poll::Ready(SelectorOutput::A); },
485 match Pin::new(&mut self.b).poll(ctx) {
486 Poll::Ready(()) => { return Poll::Ready(SelectorOutput::B); },
489 match Pin::new(&mut self.c).poll(ctx) {
490 Poll::Ready(res) => { return Poll::Ready(SelectorOutput::C(res)); },
497 // If we want to poll a future without an async context to figure out if it has completed or
498 // not without awaiting, we need a Waker, which needs a vtable...we fill it with dummy values
499 // but sadly there's a good bit of boilerplate here.
500 fn dummy_waker_clone(_: *const ()) -> RawWaker { RawWaker::new(core::ptr::null(), &DUMMY_WAKER_VTABLE) }
501 fn dummy_waker_action(_: *const ()) { }
503 const DUMMY_WAKER_VTABLE: RawWakerVTable = RawWakerVTable::new(
504 dummy_waker_clone, dummy_waker_action, dummy_waker_action, dummy_waker_action);
505 pub(crate) fn dummy_waker() -> Waker { unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &DUMMY_WAKER_VTABLE)) } }
507 #[cfg(feature = "futures")]
508 use futures_util::{Selector, SelectorOutput, dummy_waker};
509 #[cfg(feature = "futures")]
512 /// Processes background events in a future.
514 /// `sleeper` should return a future which completes in the given amount of time and returns a
515 /// boolean indicating whether the background processing should exit. Once `sleeper` returns a
516 /// future which outputs `true`, the loop will exit and this function's future will complete.
517 /// The `sleeper` future is free to return early after it has triggered the exit condition.
519 /// See [`BackgroundProcessor::start`] for information on which actions this handles.
521 /// Requires the `futures` feature. Note that while this method is available without the `std`
522 /// feature, doing so will skip calling [`NetworkGraph::remove_stale_channels_and_tracking`],
523 /// you should call [`NetworkGraph::remove_stale_channels_and_tracking_with_time`] regularly
524 /// manually instead.
526 /// The `mobile_interruptable_platform` flag should be set if we're currently running on a
527 /// mobile device, where we may need to check for interruption of the application regularly. If you
528 /// are unsure, you should set the flag, as the performance impact of it is minimal unless there
529 /// are hundreds or thousands of simultaneous process calls running.
531 /// The `fetch_time` parameter should return the current wall clock time, if one is available. If
532 /// no time is available, some features may be disabled, however the node will still operate fine.
534 /// For example, in order to process background events in a [Tokio](https://tokio.rs/) task, you
535 /// could setup `process_events_async` like this:
537 /// # use lightning::io;
538 /// # use std::sync::{Arc, RwLock};
539 /// # use std::sync::atomic::{AtomicBool, Ordering};
540 /// # use std::time::SystemTime;
541 /// # use lightning_background_processor::{process_events_async, GossipSync};
542 /// # struct Logger {}
543 /// # impl lightning::util::logger::Logger for Logger {
544 /// # fn log(&self, _record: lightning::util::logger::Record) {}
546 /// # struct Store {}
547 /// # impl lightning::util::persist::KVStore for Store {
548 /// # fn read(&self, primary_namespace: &str, secondary_namespace: &str, key: &str) -> io::Result<Vec<u8>> { Ok(Vec::new()) }
549 /// # fn write(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, buf: &[u8]) -> io::Result<()> { Ok(()) }
550 /// # fn remove(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, lazy: bool) -> io::Result<()> { Ok(()) }
551 /// # fn list(&self, primary_namespace: &str, secondary_namespace: &str) -> io::Result<Vec<String>> { Ok(Vec::new()) }
553 /// # struct EventHandler {}
554 /// # impl EventHandler {
555 /// # async fn handle_event(&self, _: lightning::events::Event) {}
557 /// # #[derive(Eq, PartialEq, Clone, Hash)]
558 /// # struct SocketDescriptor {}
559 /// # impl lightning::ln::peer_handler::SocketDescriptor for SocketDescriptor {
560 /// # fn send_data(&mut self, _data: &[u8], _resume_read: bool) -> usize { 0 }
561 /// # fn disconnect_socket(&mut self) {}
563 /// # type ChainMonitor<B, F, FE> = lightning::chain::chainmonitor::ChainMonitor<lightning::sign::InMemorySigner, Arc<F>, Arc<B>, Arc<FE>, Arc<Logger>, Arc<Store>>;
564 /// # type NetworkGraph = lightning::routing::gossip::NetworkGraph<Arc<Logger>>;
565 /// # type P2PGossipSync<UL> = lightning::routing::gossip::P2PGossipSync<Arc<NetworkGraph>, Arc<UL>, Arc<Logger>>;
566 /// # type ChannelManager<B, F, FE> = lightning::ln::channelmanager::SimpleArcChannelManager<ChainMonitor<B, F, FE>, B, FE, Logger>;
567 /// # type Scorer = RwLock<lightning::routing::scoring::ProbabilisticScorer<Arc<NetworkGraph>, Arc<Logger>>>;
568 /// # type PeerManager<B, F, FE, UL> = lightning::ln::peer_handler::SimpleArcPeerManager<SocketDescriptor, ChainMonitor<B, F, FE>, B, FE, Arc<UL>, Logger>;
571 /// # B: lightning::chain::chaininterface::BroadcasterInterface + Send + Sync + 'static,
572 /// # F: lightning::chain::Filter + Send + Sync + 'static,
573 /// # FE: lightning::chain::chaininterface::FeeEstimator + Send + Sync + 'static,
574 /// # UL: lightning::routing::utxo::UtxoLookup + Send + Sync + 'static,
576 /// # peer_manager: Arc<PeerManager<B, F, FE, UL>>,
577 /// # event_handler: Arc<EventHandler>,
578 /// # channel_manager: Arc<ChannelManager<B, F, FE>>,
579 /// # chain_monitor: Arc<ChainMonitor<B, F, FE>>,
580 /// # gossip_sync: Arc<P2PGossipSync<UL>>,
581 /// # persister: Arc<Store>,
582 /// # logger: Arc<Logger>,
583 /// # scorer: Arc<Scorer>,
586 /// # async fn setup_background_processing<
587 /// # B: lightning::chain::chaininterface::BroadcasterInterface + Send + Sync + 'static,
588 /// # F: lightning::chain::Filter + Send + Sync + 'static,
589 /// # FE: lightning::chain::chaininterface::FeeEstimator + Send + Sync + 'static,
590 /// # UL: lightning::routing::utxo::UtxoLookup + Send + Sync + 'static,
591 /// # >(node: Node<B, F, FE, UL>) {
592 /// let background_persister = Arc::clone(&node.persister);
593 /// let background_event_handler = Arc::clone(&node.event_handler);
594 /// let background_chain_mon = Arc::clone(&node.chain_monitor);
595 /// let background_chan_man = Arc::clone(&node.channel_manager);
596 /// let background_gossip_sync = GossipSync::p2p(Arc::clone(&node.gossip_sync));
597 /// let background_peer_man = Arc::clone(&node.peer_manager);
598 /// let background_logger = Arc::clone(&node.logger);
599 /// let background_scorer = Arc::clone(&node.scorer);
601 /// // Setup the sleeper.
602 /// let (stop_sender, stop_receiver) = tokio::sync::watch::channel(());
604 /// let sleeper = move |d| {
605 /// let mut receiver = stop_receiver.clone();
606 /// Box::pin(async move {
608 /// _ = tokio::time::sleep(d) => false,
609 /// _ = receiver.changed() => true,
614 /// let mobile_interruptable_platform = false;
616 /// let handle = tokio::spawn(async move {
617 /// process_events_async(
618 /// background_persister,
619 /// |e| background_event_handler.handle_event(e),
620 /// background_chain_mon,
621 /// background_chan_man,
622 /// background_gossip_sync,
623 /// background_peer_man,
624 /// background_logger,
625 /// Some(background_scorer),
627 /// mobile_interruptable_platform,
628 /// || Some(SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap())
631 /// .expect("Failed to process events");
634 /// // Stop the background processing.
635 /// stop_sender.send(()).unwrap();
636 /// handle.await.unwrap();
639 #[cfg(feature = "futures")]
640 pub async fn process_events_async<
642 UL: 'static + Deref + Send + Sync,
643 CF: 'static + Deref + Send + Sync,
644 T: 'static + Deref + Send + Sync,
645 F: 'static + Deref + Send + Sync,
646 G: 'static + Deref<Target = NetworkGraph<L>> + Send + Sync,
647 L: 'static + Deref + Send + Sync,
648 P: 'static + Deref + Send + Sync,
649 EventHandlerFuture: core::future::Future<Output = ()>,
650 EventHandler: Fn(Event) -> EventHandlerFuture,
651 PS: 'static + Deref + Send,
652 M: 'static + Deref<Target = ChainMonitor<<CM::Target as AChannelManager>::Signer, CF, T, F, L, P>> + Send + Sync,
653 CM: 'static + Deref + Send + Sync,
654 PGS: 'static + Deref<Target = P2PGossipSync<G, UL, L>> + Send + Sync,
655 RGS: 'static + Deref<Target = RapidGossipSync<G, L>> + Send,
656 PM: 'static + Deref + Send + Sync,
657 S: 'static + Deref<Target = SC> + Send + Sync,
658 SC: for<'b> WriteableScore<'b>,
659 SleepFuture: core::future::Future<Output = bool> + core::marker::Unpin,
660 Sleeper: Fn(Duration) -> SleepFuture,
661 FetchTime: Fn() -> Option<Duration>,
663 persister: PS, event_handler: EventHandler, chain_monitor: M, channel_manager: CM,
664 gossip_sync: GossipSync<PGS, RGS, G, UL, L>, peer_manager: PM, logger: L, scorer: Option<S>,
665 sleeper: Sleeper, mobile_interruptable_platform: bool, fetch_time: FetchTime,
666 ) -> Result<(), lightning::io::Error>
668 UL::Target: 'static + UtxoLookup,
669 CF::Target: 'static + chain::Filter,
670 T::Target: 'static + BroadcasterInterface,
671 F::Target: 'static + FeeEstimator,
672 L::Target: 'static + Logger,
673 P::Target: 'static + Persist<<CM::Target as AChannelManager>::Signer>,
674 PS::Target: 'static + Persister<'a, CM, L, SC>,
675 CM::Target: AChannelManager + Send + Sync,
676 PM::Target: APeerManager + Send + Sync,
678 let mut should_break = false;
679 let async_event_handler = |event| {
680 let network_graph = gossip_sync.network_graph();
681 let event_handler = &event_handler;
682 let scorer = &scorer;
683 let logger = &logger;
684 let persister = &persister;
685 let fetch_time = &fetch_time;
687 if let Some(network_graph) = network_graph {
688 handle_network_graph_update(network_graph, &event)
690 if let Some(ref scorer) = scorer {
691 if let Some(duration_since_epoch) = fetch_time() {
692 if update_scorer(scorer, &event, duration_since_epoch) {
693 log_trace!(logger, "Persisting scorer after update");
694 if let Err(e) = persister.persist_scorer(&scorer) {
695 log_error!(logger, "Error: Failed to persist scorer, check your disk and permissions {}", e)
700 event_handler(event).await;
704 persister, chain_monitor,
705 chain_monitor.process_pending_events_async(async_event_handler).await,
706 channel_manager, channel_manager.get_cm().process_pending_events_async(async_event_handler).await,
707 peer_manager, process_onion_message_handler_events_async(&peer_manager, async_event_handler).await,
708 gossip_sync, logger, scorer, should_break, {
710 a: channel_manager.get_cm().get_event_or_persistence_needed_future(),
711 b: chain_monitor.get_update_future(),
712 c: sleeper(if mobile_interruptable_platform { Duration::from_millis(100) } else { Duration::from_secs(FASTEST_TIMER) }),
715 SelectorOutput::A|SelectorOutput::B => {},
716 SelectorOutput::C(exit) => {
720 }, |t| sleeper(Duration::from_secs(t)),
721 |fut: &mut SleepFuture, _| {
722 let mut waker = dummy_waker();
723 let mut ctx = task::Context::from_waker(&mut waker);
724 match core::pin::Pin::new(fut).poll(&mut ctx) {
725 task::Poll::Ready(exit) => { should_break = exit; true },
726 task::Poll::Pending => false,
728 }, mobile_interruptable_platform, fetch_time,
732 #[cfg(feature = "futures")]
733 async fn process_onion_message_handler_events_async<
734 EventHandlerFuture: core::future::Future<Output = ()>,
735 EventHandler: Fn(Event) -> EventHandlerFuture,
736 PM: 'static + Deref + Send + Sync,
738 peer_manager: &PM, handler: EventHandler
741 PM::Target: APeerManager + Send + Sync,
743 let events = core::cell::RefCell::new(Vec::new());
744 peer_manager.onion_message_handler().process_pending_events(&|e| events.borrow_mut().push(e));
746 for event in events.into_inner() {
751 #[cfg(feature = "std")]
752 impl BackgroundProcessor {
753 /// Start a background thread that takes care of responsibilities enumerated in the [top-level
756 /// The thread runs indefinitely unless the object is dropped, [`stop`] is called, or
757 /// [`Persister::persist_manager`] returns an error. In case of an error, the error is retrieved by calling
758 /// either [`join`] or [`stop`].
760 /// # Data Persistence
762 /// [`Persister::persist_manager`] is responsible for writing out the [`ChannelManager`] to disk, and/or
763 /// uploading to one or more backup services. See [`ChannelManager::write`] for writing out a
764 /// [`ChannelManager`]. See the `lightning-persister` crate for LDK's
765 /// provided implementation.
767 /// [`Persister::persist_graph`] is responsible for writing out the [`NetworkGraph`] to disk, if
768 /// [`GossipSync`] is supplied. See [`NetworkGraph::write`] for writing out a [`NetworkGraph`].
769 /// See the `lightning-persister` crate for LDK's provided implementation.
771 /// Typically, users should either implement [`Persister::persist_manager`] to never return an
772 /// error or call [`join`] and handle any error that may arise. For the latter case,
773 /// `BackgroundProcessor` must be restarted by calling `start` again after handling the error.
777 /// `event_handler` is responsible for handling events that users should be notified of (e.g.,
778 /// payment failed). [`BackgroundProcessor`] may decorate the given [`EventHandler`] with common
779 /// functionality implemented by other handlers.
780 /// * [`P2PGossipSync`] if given will update the [`NetworkGraph`] based on payment failures.
782 /// # Rapid Gossip Sync
784 /// If rapid gossip sync is meant to run at startup, pass [`RapidGossipSync`] via `gossip_sync`
785 /// to indicate that the [`BackgroundProcessor`] should not prune the [`NetworkGraph`] instance
786 /// until the [`RapidGossipSync`] instance completes its first sync.
788 /// [top-level documentation]: BackgroundProcessor
789 /// [`join`]: Self::join
790 /// [`stop`]: Self::stop
791 /// [`ChannelManager`]: lightning::ln::channelmanager::ChannelManager
792 /// [`ChannelManager::write`]: lightning::ln::channelmanager::ChannelManager#impl-Writeable
793 /// [`Persister::persist_manager`]: lightning::util::persist::Persister::persist_manager
794 /// [`Persister::persist_graph`]: lightning::util::persist::Persister::persist_graph
795 /// [`NetworkGraph`]: lightning::routing::gossip::NetworkGraph
796 /// [`NetworkGraph::write`]: lightning::routing::gossip::NetworkGraph#impl-Writeable
799 UL: 'static + Deref + Send + Sync,
800 CF: 'static + Deref + Send + Sync,
801 T: 'static + Deref + Send + Sync,
802 F: 'static + Deref + Send + Sync,
803 G: 'static + Deref<Target = NetworkGraph<L>> + Send + Sync,
804 L: 'static + Deref + Send + Sync,
805 P: 'static + Deref + Send + Sync,
806 EH: 'static + EventHandler + Send,
807 PS: 'static + Deref + Send,
808 M: 'static + Deref<Target = ChainMonitor<<CM::Target as AChannelManager>::Signer, CF, T, F, L, P>> + Send + Sync,
809 CM: 'static + Deref + Send + Sync,
810 PGS: 'static + Deref<Target = P2PGossipSync<G, UL, L>> + Send + Sync,
811 RGS: 'static + Deref<Target = RapidGossipSync<G, L>> + Send,
812 PM: 'static + Deref + Send + Sync,
813 S: 'static + Deref<Target = SC> + Send + Sync,
814 SC: for <'b> WriteableScore<'b>,
816 persister: PS, event_handler: EH, chain_monitor: M, channel_manager: CM,
817 gossip_sync: GossipSync<PGS, RGS, G, UL, L>, peer_manager: PM, logger: L, scorer: Option<S>,
820 UL::Target: 'static + UtxoLookup,
821 CF::Target: 'static + chain::Filter,
822 T::Target: 'static + BroadcasterInterface,
823 F::Target: 'static + FeeEstimator,
824 L::Target: 'static + Logger,
825 P::Target: 'static + Persist<<CM::Target as AChannelManager>::Signer>,
826 PS::Target: 'static + Persister<'a, CM, L, SC>,
827 CM::Target: AChannelManager + Send + Sync,
828 PM::Target: APeerManager + Send + Sync,
830 let stop_thread = Arc::new(AtomicBool::new(false));
831 let stop_thread_clone = stop_thread.clone();
832 let handle = thread::spawn(move || -> Result<(), std::io::Error> {
833 let event_handler = |event| {
834 let network_graph = gossip_sync.network_graph();
835 if let Some(network_graph) = network_graph {
836 handle_network_graph_update(network_graph, &event)
838 if let Some(ref scorer) = scorer {
839 use std::time::SystemTime;
840 let duration_since_epoch = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH)
841 .expect("Time should be sometime after 1970");
842 if update_scorer(scorer, &event, duration_since_epoch) {
843 log_trace!(logger, "Persisting scorer after update");
844 if let Err(e) = persister.persist_scorer(&scorer) {
845 log_error!(logger, "Error: Failed to persist scorer, check your disk and permissions {}", e)
849 event_handler.handle_event(event);
852 persister, chain_monitor, chain_monitor.process_pending_events(&event_handler),
853 channel_manager, channel_manager.get_cm().process_pending_events(&event_handler),
855 peer_manager.onion_message_handler().process_pending_events(&event_handler),
856 gossip_sync, logger, scorer, stop_thread.load(Ordering::Acquire),
857 { Sleeper::from_two_futures(
858 &channel_manager.get_cm().get_event_or_persistence_needed_future(),
859 &chain_monitor.get_update_future()
860 ).wait_timeout(Duration::from_millis(100)); },
861 |_| Instant::now(), |time: &Instant, dur| time.elapsed().as_secs() > dur, false,
863 use std::time::SystemTime;
864 Some(SystemTime::now().duration_since(SystemTime::UNIX_EPOCH)
865 .expect("Time should be sometime after 1970"))
869 Self { stop_thread: stop_thread_clone, thread_handle: Some(handle) }
872 /// Join `BackgroundProcessor`'s thread, returning any error that occurred while persisting
873 /// [`ChannelManager`].
877 /// This function panics if the background thread has panicked such as while persisting or
880 /// [`ChannelManager`]: lightning::ln::channelmanager::ChannelManager
881 pub fn join(mut self) -> Result<(), std::io::Error> {
882 assert!(self.thread_handle.is_some());
886 /// Stop `BackgroundProcessor`'s thread, returning any error that occurred while persisting
887 /// [`ChannelManager`].
891 /// This function panics if the background thread has panicked such as while persisting or
894 /// [`ChannelManager`]: lightning::ln::channelmanager::ChannelManager
895 pub fn stop(mut self) -> Result<(), std::io::Error> {
896 assert!(self.thread_handle.is_some());
897 self.stop_and_join_thread()
900 fn stop_and_join_thread(&mut self) -> Result<(), std::io::Error> {
901 self.stop_thread.store(true, Ordering::Release);
905 fn join_thread(&mut self) -> Result<(), std::io::Error> {
906 match self.thread_handle.take() {
907 Some(handle) => handle.join().unwrap(),
913 #[cfg(feature = "std")]
914 impl Drop for BackgroundProcessor {
916 self.stop_and_join_thread().unwrap();
920 #[cfg(all(feature = "std", test))]
922 use bitcoin::blockdata::constants::{genesis_block, ChainHash};
923 use bitcoin::blockdata::locktime::absolute::LockTime;
924 use bitcoin::blockdata::transaction::{Transaction, TxOut};
925 use bitcoin::network::constants::Network;
926 use bitcoin::secp256k1::{SecretKey, PublicKey, Secp256k1};
927 use lightning::chain::{BestBlock, Confirm, chainmonitor};
928 use lightning::chain::channelmonitor::ANTI_REORG_DELAY;
929 use lightning::sign::{InMemorySigner, KeysManager};
930 use lightning::chain::transaction::OutPoint;
931 use lightning::events::{Event, PathFailure, MessageSendEventsProvider, MessageSendEvent};
932 use lightning::{get_event_msg, get_event};
933 use lightning::ln::{PaymentHash, ChannelId};
934 use lightning::ln::channelmanager;
935 use lightning::ln::channelmanager::{BREAKDOWN_TIMEOUT, ChainParameters, MIN_CLTV_EXPIRY_DELTA, PaymentId};
936 use lightning::ln::features::{ChannelFeatures, NodeFeatures};
937 use lightning::ln::functional_test_utils::*;
938 use lightning::ln::msgs::{ChannelMessageHandler, Init};
939 use lightning::ln::peer_handler::{PeerManager, MessageHandler, SocketDescriptor, IgnoringMessageHandler};
940 use lightning::routing::gossip::{NetworkGraph, P2PGossipSync};
941 use lightning::routing::scoring::{ChannelUsage, ScoreUpdate, ScoreLookUp, LockableScore};
942 use lightning::routing::router::{DefaultRouter, Path, RouteHop, CandidateRouteHop};
943 use lightning::util::config::UserConfig;
944 use lightning::util::ser::Writeable;
945 use lightning::util::test_utils;
946 use lightning::util::persist::{KVStore,
947 CHANNEL_MANAGER_PERSISTENCE_PRIMARY_NAMESPACE, CHANNEL_MANAGER_PERSISTENCE_SECONDARY_NAMESPACE, CHANNEL_MANAGER_PERSISTENCE_KEY,
948 NETWORK_GRAPH_PERSISTENCE_PRIMARY_NAMESPACE, NETWORK_GRAPH_PERSISTENCE_SECONDARY_NAMESPACE, NETWORK_GRAPH_PERSISTENCE_KEY,
949 SCORER_PERSISTENCE_PRIMARY_NAMESPACE, SCORER_PERSISTENCE_SECONDARY_NAMESPACE, SCORER_PERSISTENCE_KEY};
950 use lightning_persister::fs_store::FilesystemStore;
951 use std::collections::VecDeque;
953 use std::path::PathBuf;
954 use std::sync::{Arc, Mutex};
955 use std::sync::mpsc::SyncSender;
956 use std::time::Duration;
957 use lightning_rapid_gossip_sync::RapidGossipSync;
958 use super::{BackgroundProcessor, GossipSync, FRESHNESS_TIMER};
960 const EVENT_DEADLINE: u64 = 5 * FRESHNESS_TIMER;
962 #[derive(Clone, Hash, PartialEq, Eq)]
963 struct TestDescriptor{}
964 impl SocketDescriptor for TestDescriptor {
965 fn send_data(&mut self, _data: &[u8], _resume_read: bool) -> usize {
969 fn disconnect_socket(&mut self) {}
973 type LockingWrapper<T> = lightning::routing::scoring::MultiThreadedLockableScore<T>;
974 #[cfg(not(c_bindings))]
975 type LockingWrapper<T> = Mutex<T>;
977 type ChannelManager =
978 channelmanager::ChannelManager<
980 Arc<test_utils::TestBroadcaster>,
984 Arc<test_utils::TestFeeEstimator>,
986 Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
987 Arc<test_utils::TestLogger>,
989 Arc<LockingWrapper<TestScorer>>,
993 Arc<test_utils::TestLogger>>;
995 type ChainMonitor = chainmonitor::ChainMonitor<InMemorySigner, Arc<test_utils::TestChainSource>, Arc<test_utils::TestBroadcaster>, Arc<test_utils::TestFeeEstimator>, Arc<test_utils::TestLogger>, Arc<FilesystemStore>>;
997 type PGS = Arc<P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>>;
998 type RGS = Arc<RapidGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestLogger>>>;
1001 node: Arc<ChannelManager>,
1002 p2p_gossip_sync: PGS,
1003 rapid_gossip_sync: RGS,
1004 peer_manager: Arc<PeerManager<TestDescriptor, Arc<test_utils::TestChannelMessageHandler>, Arc<test_utils::TestRoutingMessageHandler>, IgnoringMessageHandler, Arc<test_utils::TestLogger>, IgnoringMessageHandler, Arc<KeysManager>>>,
1005 chain_monitor: Arc<ChainMonitor>,
1006 kv_store: Arc<FilesystemStore>,
1007 tx_broadcaster: Arc<test_utils::TestBroadcaster>,
1008 network_graph: Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
1009 logger: Arc<test_utils::TestLogger>,
1010 best_block: BestBlock,
1011 scorer: Arc<LockingWrapper<TestScorer>>,
1015 fn p2p_gossip_sync(&self) -> GossipSync<PGS, RGS, Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>> {
1016 GossipSync::P2P(self.p2p_gossip_sync.clone())
1019 fn rapid_gossip_sync(&self) -> GossipSync<PGS, RGS, Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>> {
1020 GossipSync::Rapid(self.rapid_gossip_sync.clone())
1023 fn no_gossip_sync(&self) -> GossipSync<PGS, RGS, Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>> {
1028 impl Drop for Node {
1029 fn drop(&mut self) {
1030 let data_dir = self.kv_store.get_data_dir();
1031 match fs::remove_dir_all(data_dir.clone()) {
1032 Err(e) => println!("Failed to remove test store directory {}: {}", data_dir.display(), e),
1039 graph_error: Option<(std::io::ErrorKind, &'static str)>,
1040 graph_persistence_notifier: Option<SyncSender<()>>,
1041 manager_error: Option<(std::io::ErrorKind, &'static str)>,
1042 scorer_error: Option<(std::io::ErrorKind, &'static str)>,
1043 kv_store: FilesystemStore,
1047 fn new(data_dir: PathBuf) -> Self {
1048 let kv_store = FilesystemStore::new(data_dir);
1049 Self { graph_error: None, graph_persistence_notifier: None, manager_error: None, scorer_error: None, kv_store }
1052 fn with_graph_error(self, error: std::io::ErrorKind, message: &'static str) -> Self {
1053 Self { graph_error: Some((error, message)), ..self }
1056 fn with_graph_persistence_notifier(self, sender: SyncSender<()>) -> Self {
1057 Self { graph_persistence_notifier: Some(sender), ..self }
1060 fn with_manager_error(self, error: std::io::ErrorKind, message: &'static str) -> Self {
1061 Self { manager_error: Some((error, message)), ..self }
1064 fn with_scorer_error(self, error: std::io::ErrorKind, message: &'static str) -> Self {
1065 Self { scorer_error: Some((error, message)), ..self }
1069 impl KVStore for Persister {
1070 fn read(&self, primary_namespace: &str, secondary_namespace: &str, key: &str) -> lightning::io::Result<Vec<u8>> {
1071 self.kv_store.read(primary_namespace, secondary_namespace, key)
1074 fn write(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, buf: &[u8]) -> lightning::io::Result<()> {
1075 if primary_namespace == CHANNEL_MANAGER_PERSISTENCE_PRIMARY_NAMESPACE &&
1076 secondary_namespace == CHANNEL_MANAGER_PERSISTENCE_SECONDARY_NAMESPACE &&
1077 key == CHANNEL_MANAGER_PERSISTENCE_KEY
1079 if let Some((error, message)) = self.manager_error {
1080 return Err(std::io::Error::new(error, message))
1084 if primary_namespace == NETWORK_GRAPH_PERSISTENCE_PRIMARY_NAMESPACE &&
1085 secondary_namespace == NETWORK_GRAPH_PERSISTENCE_SECONDARY_NAMESPACE &&
1086 key == NETWORK_GRAPH_PERSISTENCE_KEY
1088 if let Some(sender) = &self.graph_persistence_notifier {
1089 match sender.send(()) {
1091 Err(std::sync::mpsc::SendError(())) => println!("Persister failed to notify as receiver went away."),
1095 if let Some((error, message)) = self.graph_error {
1096 return Err(std::io::Error::new(error, message))
1100 if primary_namespace == SCORER_PERSISTENCE_PRIMARY_NAMESPACE &&
1101 secondary_namespace == SCORER_PERSISTENCE_SECONDARY_NAMESPACE &&
1102 key == SCORER_PERSISTENCE_KEY
1104 if let Some((error, message)) = self.scorer_error {
1105 return Err(std::io::Error::new(error, message))
1109 self.kv_store.write(primary_namespace, secondary_namespace, key, buf)
1112 fn remove(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, lazy: bool) -> lightning::io::Result<()> {
1113 self.kv_store.remove(primary_namespace, secondary_namespace, key, lazy)
1116 fn list(&self, primary_namespace: &str, secondary_namespace: &str) -> lightning::io::Result<Vec<String>> {
1117 self.kv_store.list(primary_namespace, secondary_namespace)
1122 event_expectations: Option<VecDeque<TestResult>>,
1127 PaymentFailure { path: Path, short_channel_id: u64 },
1128 PaymentSuccess { path: Path },
1129 ProbeFailure { path: Path },
1130 ProbeSuccess { path: Path },
1135 Self { event_expectations: None }
1138 fn expect(&mut self, expectation: TestResult) {
1139 self.event_expectations.get_or_insert_with(VecDeque::new).push_back(expectation);
1143 impl lightning::util::ser::Writeable for TestScorer {
1144 fn write<W: lightning::util::ser::Writer>(&self, _: &mut W) -> Result<(), lightning::io::Error> { Ok(()) }
1147 impl ScoreLookUp for TestScorer {
1148 type ScoreParams = ();
1149 fn channel_penalty_msat(
1150 &self, _candidate: &CandidateRouteHop, _usage: ChannelUsage, _score_params: &Self::ScoreParams
1151 ) -> u64 { unimplemented!(); }
1154 impl ScoreUpdate for TestScorer {
1155 fn payment_path_failed(&mut self, actual_path: &Path, actual_short_channel_id: u64, _: Duration) {
1156 if let Some(expectations) = &mut self.event_expectations {
1157 match expectations.pop_front().unwrap() {
1158 TestResult::PaymentFailure { path, short_channel_id } => {
1159 assert_eq!(actual_path, &path);
1160 assert_eq!(actual_short_channel_id, short_channel_id);
1162 TestResult::PaymentSuccess { path } => {
1163 panic!("Unexpected successful payment path: {:?}", path)
1165 TestResult::ProbeFailure { path } => {
1166 panic!("Unexpected probe failure: {:?}", path)
1168 TestResult::ProbeSuccess { path } => {
1169 panic!("Unexpected probe success: {:?}", path)
1175 fn payment_path_successful(&mut self, actual_path: &Path, _: Duration) {
1176 if let Some(expectations) = &mut self.event_expectations {
1177 match expectations.pop_front().unwrap() {
1178 TestResult::PaymentFailure { path, .. } => {
1179 panic!("Unexpected payment path failure: {:?}", path)
1181 TestResult::PaymentSuccess { path } => {
1182 assert_eq!(actual_path, &path);
1184 TestResult::ProbeFailure { path } => {
1185 panic!("Unexpected probe failure: {:?}", path)
1187 TestResult::ProbeSuccess { path } => {
1188 panic!("Unexpected probe success: {:?}", path)
1194 fn probe_failed(&mut self, actual_path: &Path, _: u64, _: Duration) {
1195 if let Some(expectations) = &mut self.event_expectations {
1196 match expectations.pop_front().unwrap() {
1197 TestResult::PaymentFailure { path, .. } => {
1198 panic!("Unexpected payment path failure: {:?}", path)
1200 TestResult::PaymentSuccess { path } => {
1201 panic!("Unexpected payment path success: {:?}", path)
1203 TestResult::ProbeFailure { path } => {
1204 assert_eq!(actual_path, &path);
1206 TestResult::ProbeSuccess { path } => {
1207 panic!("Unexpected probe success: {:?}", path)
1212 fn probe_successful(&mut self, actual_path: &Path, _: Duration) {
1213 if let Some(expectations) = &mut self.event_expectations {
1214 match expectations.pop_front().unwrap() {
1215 TestResult::PaymentFailure { path, .. } => {
1216 panic!("Unexpected payment path failure: {:?}", path)
1218 TestResult::PaymentSuccess { path } => {
1219 panic!("Unexpected payment path success: {:?}", path)
1221 TestResult::ProbeFailure { path } => {
1222 panic!("Unexpected probe failure: {:?}", path)
1224 TestResult::ProbeSuccess { path } => {
1225 assert_eq!(actual_path, &path);
1230 fn time_passed(&mut self, _: Duration) {}
1234 impl lightning::routing::scoring::Score for TestScorer {}
1236 impl Drop for TestScorer {
1237 fn drop(&mut self) {
1238 if std::thread::panicking() {
1242 if let Some(event_expectations) = &self.event_expectations {
1243 if !event_expectations.is_empty() {
1244 panic!("Unsatisfied event expectations: {:?}", event_expectations);
1250 fn get_full_filepath(filepath: String, filename: String) -> String {
1251 let mut path = PathBuf::from(filepath);
1252 path.push(filename);
1253 path.to_str().unwrap().to_string()
1256 fn create_nodes(num_nodes: usize, persist_dir: &str) -> (String, Vec<Node>) {
1257 let persist_temp_path = env::temp_dir().join(persist_dir);
1258 let persist_dir = persist_temp_path.to_string_lossy().to_string();
1259 let network = Network::Bitcoin;
1260 let mut nodes = Vec::new();
1261 for i in 0..num_nodes {
1262 let tx_broadcaster = Arc::new(test_utils::TestBroadcaster::new(network));
1263 let fee_estimator = Arc::new(test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) });
1264 let logger = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i)));
1265 let genesis_block = genesis_block(network);
1266 let network_graph = Arc::new(NetworkGraph::new(network, logger.clone()));
1267 let scorer = Arc::new(LockingWrapper::new(TestScorer::new()));
1268 let now = Duration::from_secs(genesis_block.header.time as u64);
1269 let seed = [i as u8; 32];
1270 let keys_manager = Arc::new(KeysManager::new(&seed, now.as_secs(), now.subsec_nanos()));
1271 let router = Arc::new(DefaultRouter::new(network_graph.clone(), logger.clone(), Arc::clone(&keys_manager), scorer.clone(), Default::default()));
1272 let chain_source = Arc::new(test_utils::TestChainSource::new(Network::Bitcoin));
1273 let kv_store = Arc::new(FilesystemStore::new(format!("{}_persister_{}", &persist_dir, i).into()));
1274 let chain_monitor = Arc::new(chainmonitor::ChainMonitor::new(Some(chain_source.clone()), tx_broadcaster.clone(), logger.clone(), fee_estimator.clone(), kv_store.clone()));
1275 let best_block = BestBlock::from_network(network);
1276 let params = ChainParameters { network, best_block };
1277 let manager = Arc::new(ChannelManager::new(fee_estimator.clone(), chain_monitor.clone(), tx_broadcaster.clone(), router.clone(), logger.clone(), keys_manager.clone(), keys_manager.clone(), keys_manager.clone(), UserConfig::default(), params, genesis_block.header.time));
1278 let p2p_gossip_sync = Arc::new(P2PGossipSync::new(network_graph.clone(), Some(chain_source.clone()), logger.clone()));
1279 let rapid_gossip_sync = Arc::new(RapidGossipSync::new(network_graph.clone(), logger.clone()));
1280 let msg_handler = MessageHandler {
1281 chan_handler: Arc::new(test_utils::TestChannelMessageHandler::new(ChainHash::using_genesis_block(Network::Testnet))),
1282 route_handler: Arc::new(test_utils::TestRoutingMessageHandler::new()),
1283 onion_message_handler: IgnoringMessageHandler{}, custom_message_handler: IgnoringMessageHandler{}
1285 let peer_manager = Arc::new(PeerManager::new(msg_handler, 0, &seed, logger.clone(), keys_manager.clone()));
1286 let node = Node { node: manager, p2p_gossip_sync, rapid_gossip_sync, peer_manager, chain_monitor, kv_store, tx_broadcaster, network_graph, logger, best_block, scorer };
1290 for i in 0..num_nodes {
1291 for j in (i+1)..num_nodes {
1292 nodes[i].node.peer_connected(&nodes[j].node.get_our_node_id(), &Init {
1293 features: nodes[j].node.init_features(), networks: None, remote_network_address: None
1295 nodes[j].node.peer_connected(&nodes[i].node.get_our_node_id(), &Init {
1296 features: nodes[i].node.init_features(), networks: None, remote_network_address: None
1301 (persist_dir, nodes)
1304 macro_rules! open_channel {
1305 ($node_a: expr, $node_b: expr, $channel_value: expr) => {{
1306 begin_open_channel!($node_a, $node_b, $channel_value);
1307 let events = $node_a.node.get_and_clear_pending_events();
1308 assert_eq!(events.len(), 1);
1309 let (temporary_channel_id, tx) = handle_funding_generation_ready!(events[0], $channel_value);
1310 $node_a.node.funding_transaction_generated(&temporary_channel_id, &$node_b.node.get_our_node_id(), tx.clone()).unwrap();
1311 $node_b.node.handle_funding_created(&$node_a.node.get_our_node_id(), &get_event_msg!($node_a, MessageSendEvent::SendFundingCreated, $node_b.node.get_our_node_id()));
1312 get_event!($node_b, Event::ChannelPending);
1313 $node_a.node.handle_funding_signed(&$node_b.node.get_our_node_id(), &get_event_msg!($node_b, MessageSendEvent::SendFundingSigned, $node_a.node.get_our_node_id()));
1314 get_event!($node_a, Event::ChannelPending);
1319 macro_rules! begin_open_channel {
1320 ($node_a: expr, $node_b: expr, $channel_value: expr) => {{
1321 $node_a.node.create_channel($node_b.node.get_our_node_id(), $channel_value, 100, 42, None, None).unwrap();
1322 $node_b.node.handle_open_channel(&$node_a.node.get_our_node_id(), &get_event_msg!($node_a, MessageSendEvent::SendOpenChannel, $node_b.node.get_our_node_id()));
1323 $node_a.node.handle_accept_channel(&$node_b.node.get_our_node_id(), &get_event_msg!($node_b, MessageSendEvent::SendAcceptChannel, $node_a.node.get_our_node_id()));
1327 macro_rules! handle_funding_generation_ready {
1328 ($event: expr, $channel_value: expr) => {{
1330 Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, ref output_script, user_channel_id, .. } => {
1331 assert_eq!(channel_value_satoshis, $channel_value);
1332 assert_eq!(user_channel_id, 42);
1334 let tx = Transaction { version: 1 as i32, lock_time: LockTime::ZERO, input: Vec::new(), output: vec![TxOut {
1335 value: channel_value_satoshis, script_pubkey: output_script.clone(),
1337 (temporary_channel_id, tx)
1339 _ => panic!("Unexpected event"),
1344 fn confirm_transaction_depth(node: &mut Node, tx: &Transaction, depth: u32) {
1345 for i in 1..=depth {
1346 let prev_blockhash = node.best_block.block_hash;
1347 let height = node.best_block.height + 1;
1348 let header = create_dummy_header(prev_blockhash, height);
1349 let txdata = vec![(0, tx)];
1350 node.best_block = BestBlock::new(header.block_hash(), height);
1353 node.node.transactions_confirmed(&header, &txdata, height);
1354 node.chain_monitor.transactions_confirmed(&header, &txdata, height);
1356 x if x == depth => {
1357 node.node.best_block_updated(&header, height);
1358 node.chain_monitor.best_block_updated(&header, height);
1364 fn confirm_transaction(node: &mut Node, tx: &Transaction) {
1365 confirm_transaction_depth(node, tx, ANTI_REORG_DELAY);
1369 fn test_background_processor() {
1370 // Test that when a new channel is created, the ChannelManager needs to be re-persisted with
1371 // updates. Also test that when new updates are available, the manager signals that it needs
1372 // re-persistence and is successfully re-persisted.
1373 let (persist_dir, nodes) = create_nodes(2, "test_background_processor");
1375 // Go through the channel creation process so that each node has something to persist. Since
1376 // open_channel consumes events, it must complete before starting BackgroundProcessor to
1377 // avoid a race with processing events.
1378 let tx = open_channel!(nodes[0], nodes[1], 100000);
1380 // Initiate the background processors to watch each node.
1381 let data_dir = nodes[0].kv_store.get_data_dir();
1382 let persister = Arc::new(Persister::new(data_dir));
1383 let event_handler = |_: _| {};
1384 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].p2p_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1386 macro_rules! check_persisted_data {
1387 ($node: expr, $filepath: expr) => {
1388 let mut expected_bytes = Vec::new();
1390 expected_bytes.clear();
1391 match $node.write(&mut expected_bytes) {
1393 match std::fs::read($filepath) {
1395 if bytes == expected_bytes {
1404 Err(e) => panic!("Unexpected error: {}", e)
1410 // Check that the initial channel manager data is persisted as expected.
1411 let filepath = get_full_filepath(format!("{}_persister_0", &persist_dir), "manager".to_string());
1412 check_persisted_data!(nodes[0].node, filepath.clone());
1415 if !nodes[0].node.get_event_or_persist_condvar_value() { break }
1418 // Force-close the channel.
1419 let error_message = "Channel force-closed";
1420 nodes[0].node.force_close_broadcasting_latest_txn(&ChannelId::v1_from_funding_outpoint(OutPoint { txid: tx.txid(), index: 0 }), &nodes[1].node.get_our_node_id(), error_message.to_string()).unwrap();
1422 // Check that the force-close updates are persisted.
1423 check_persisted_data!(nodes[0].node, filepath.clone());
1425 if !nodes[0].node.get_event_or_persist_condvar_value() { break }
1428 // Check network graph is persisted
1429 let filepath = get_full_filepath(format!("{}_persister_0", &persist_dir), "network_graph".to_string());
1430 check_persisted_data!(nodes[0].network_graph, filepath.clone());
1432 // Check scorer is persisted
1433 let filepath = get_full_filepath(format!("{}_persister_0", &persist_dir), "scorer".to_string());
1434 check_persisted_data!(nodes[0].scorer, filepath.clone());
1436 if !std::thread::panicking() {
1437 bg_processor.stop().unwrap();
1442 fn test_timer_tick_called() {
1444 // - `ChannelManager::timer_tick_occurred` is called every `FRESHNESS_TIMER`,
1445 // - `ChainMonitor::rebroadcast_pending_claims` is called every `REBROADCAST_TIMER`,
1446 // - `PeerManager::timer_tick_occurred` is called every `PING_TIMER`, and
1447 // - `OnionMessageHandler::timer_tick_occurred` is called every `ONION_MESSAGE_HANDLER_TIMER`.
1448 let (_, nodes) = create_nodes(1, "test_timer_tick_called");
1449 let data_dir = nodes[0].kv_store.get_data_dir();
1450 let persister = Arc::new(Persister::new(data_dir));
1451 let event_handler = |_: _| {};
1452 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1454 let log_entries = nodes[0].logger.lines.lock().unwrap();
1455 let desired_log_1 = "Calling ChannelManager's timer_tick_occurred".to_string();
1456 let desired_log_2 = "Calling PeerManager's timer_tick_occurred".to_string();
1457 let desired_log_3 = "Rebroadcasting monitor's pending claims".to_string();
1458 let desired_log_4 = "Calling OnionMessageHandler's timer_tick_occurred".to_string();
1459 if log_entries.get(&("lightning_background_processor", desired_log_1)).is_some() &&
1460 log_entries.get(&("lightning_background_processor", desired_log_2)).is_some() &&
1461 log_entries.get(&("lightning_background_processor", desired_log_3)).is_some() &&
1462 log_entries.get(&("lightning_background_processor", desired_log_4)).is_some() {
1467 if !std::thread::panicking() {
1468 bg_processor.stop().unwrap();
1473 fn test_channel_manager_persist_error() {
1474 // Test that if we encounter an error during manager persistence, the thread panics.
1475 let (_, nodes) = create_nodes(2, "test_persist_error");
1476 open_channel!(nodes[0], nodes[1], 100000);
1478 let data_dir = nodes[0].kv_store.get_data_dir();
1479 let persister = Arc::new(Persister::new(data_dir).with_manager_error(std::io::ErrorKind::Other, "test"));
1480 let event_handler = |_: _| {};
1481 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1482 match bg_processor.join() {
1483 Ok(_) => panic!("Expected error persisting manager"),
1485 assert_eq!(e.kind(), std::io::ErrorKind::Other);
1486 assert_eq!(e.get_ref().unwrap().to_string(), "test");
1492 #[cfg(feature = "futures")]
1493 async fn test_channel_manager_persist_error_async() {
1494 // Test that if we encounter an error during manager persistence, the thread panics.
1495 let (_, nodes) = create_nodes(2, "test_persist_error_sync");
1496 open_channel!(nodes[0], nodes[1], 100000);
1498 let data_dir = nodes[0].kv_store.get_data_dir();
1499 let persister = Arc::new(Persister::new(data_dir).with_manager_error(std::io::ErrorKind::Other, "test"));
1501 let bp_future = super::process_events_async(
1502 persister, |_: _| {async {}}, nodes[0].chain_monitor.clone(), nodes[0].node.clone(),
1503 nodes[0].rapid_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(),
1504 Some(nodes[0].scorer.clone()), move |dur: Duration| {
1505 Box::pin(async move {
1506 tokio::time::sleep(dur).await;
1509 }, false, || Some(Duration::ZERO),
1511 match bp_future.await {
1512 Ok(_) => panic!("Expected error persisting manager"),
1514 assert_eq!(e.kind(), std::io::ErrorKind::Other);
1515 assert_eq!(e.get_ref().unwrap().to_string(), "test");
1521 fn test_network_graph_persist_error() {
1522 // Test that if we encounter an error during network graph persistence, an error gets returned.
1523 let (_, nodes) = create_nodes(2, "test_persist_network_graph_error");
1524 let data_dir = nodes[0].kv_store.get_data_dir();
1525 let persister = Arc::new(Persister::new(data_dir).with_graph_error(std::io::ErrorKind::Other, "test"));
1526 let event_handler = |_: _| {};
1527 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].p2p_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1529 match bg_processor.stop() {
1530 Ok(_) => panic!("Expected error persisting network graph"),
1532 assert_eq!(e.kind(), std::io::ErrorKind::Other);
1533 assert_eq!(e.get_ref().unwrap().to_string(), "test");
1539 fn test_scorer_persist_error() {
1540 // Test that if we encounter an error during scorer persistence, an error gets returned.
1541 let (_, nodes) = create_nodes(2, "test_persist_scorer_error");
1542 let data_dir = nodes[0].kv_store.get_data_dir();
1543 let persister = Arc::new(Persister::new(data_dir).with_scorer_error(std::io::ErrorKind::Other, "test"));
1544 let event_handler = |_: _| {};
1545 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1547 match bg_processor.stop() {
1548 Ok(_) => panic!("Expected error persisting scorer"),
1550 assert_eq!(e.kind(), std::io::ErrorKind::Other);
1551 assert_eq!(e.get_ref().unwrap().to_string(), "test");
1557 fn test_background_event_handling() {
1558 let (_, mut nodes) = create_nodes(2, "test_background_event_handling");
1559 let channel_value = 100000;
1560 let data_dir = nodes[0].kv_store.get_data_dir();
1561 let persister = Arc::new(Persister::new(data_dir.clone()));
1563 // Set up a background event handler for FundingGenerationReady events.
1564 let (funding_generation_send, funding_generation_recv) = std::sync::mpsc::sync_channel(1);
1565 let (channel_pending_send, channel_pending_recv) = std::sync::mpsc::sync_channel(1);
1566 let event_handler = move |event: Event| match event {
1567 Event::FundingGenerationReady { .. } => funding_generation_send.send(handle_funding_generation_ready!(event, channel_value)).unwrap(),
1568 Event::ChannelPending { .. } => channel_pending_send.send(()).unwrap(),
1569 Event::ChannelReady { .. } => {},
1570 _ => panic!("Unexpected event: {:?}", event),
1573 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1575 // Open a channel and check that the FundingGenerationReady event was handled.
1576 begin_open_channel!(nodes[0], nodes[1], channel_value);
1577 let (temporary_channel_id, funding_tx) = funding_generation_recv
1578 .recv_timeout(Duration::from_secs(EVENT_DEADLINE))
1579 .expect("FundingGenerationReady not handled within deadline");
1580 nodes[0].node.funding_transaction_generated(&temporary_channel_id, &nodes[1].node.get_our_node_id(), funding_tx.clone()).unwrap();
1581 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id()));
1582 get_event!(nodes[1], Event::ChannelPending);
1583 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id()));
1584 let _ = channel_pending_recv.recv_timeout(Duration::from_secs(EVENT_DEADLINE))
1585 .expect("ChannelPending not handled within deadline");
1587 // Confirm the funding transaction.
1588 confirm_transaction(&mut nodes[0], &funding_tx);
1589 let as_funding = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReady, nodes[1].node.get_our_node_id());
1590 confirm_transaction(&mut nodes[1], &funding_tx);
1591 let bs_funding = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReady, nodes[0].node.get_our_node_id());
1592 nodes[0].node.handle_channel_ready(&nodes[1].node.get_our_node_id(), &bs_funding);
1593 let _as_channel_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
1594 nodes[1].node.handle_channel_ready(&nodes[0].node.get_our_node_id(), &as_funding);
1595 let _bs_channel_update = get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
1597 if !std::thread::panicking() {
1598 bg_processor.stop().unwrap();
1601 // Set up a background event handler for SpendableOutputs events.
1602 let (sender, receiver) = std::sync::mpsc::sync_channel(1);
1603 let event_handler = move |event: Event| match event {
1604 Event::SpendableOutputs { .. } => sender.send(event).unwrap(),
1605 Event::ChannelReady { .. } => {},
1606 Event::ChannelClosed { .. } => {},
1607 _ => panic!("Unexpected event: {:?}", event),
1609 let persister = Arc::new(Persister::new(data_dir));
1610 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1612 // Force close the channel and check that the SpendableOutputs event was handled.
1613 let error_message = "Channel force-closed";
1614 nodes[0].node.force_close_broadcasting_latest_txn(&nodes[0].node.list_channels()[0].channel_id, &nodes[1].node.get_our_node_id(), error_message.to_string()).unwrap();
1615 let commitment_tx = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().pop().unwrap();
1616 confirm_transaction_depth(&mut nodes[0], &commitment_tx, BREAKDOWN_TIMEOUT as u32);
1618 let event = receiver
1619 .recv_timeout(Duration::from_secs(EVENT_DEADLINE))
1620 .expect("Events not handled within deadline");
1622 Event::SpendableOutputs { .. } => {},
1623 _ => panic!("Unexpected event: {:?}", event),
1626 if !std::thread::panicking() {
1627 bg_processor.stop().unwrap();
1632 fn test_scorer_persistence() {
1633 let (_, nodes) = create_nodes(2, "test_scorer_persistence");
1634 let data_dir = nodes[0].kv_store.get_data_dir();
1635 let persister = Arc::new(Persister::new(data_dir));
1636 let event_handler = |_: _| {};
1637 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1640 let log_entries = nodes[0].logger.lines.lock().unwrap();
1641 let expected_log = "Calling time_passed and persisting scorer".to_string();
1642 if log_entries.get(&("lightning_background_processor", expected_log)).is_some() {
1647 if !std::thread::panicking() {
1648 bg_processor.stop().unwrap();
1652 macro_rules! do_test_not_pruning_network_graph_until_graph_sync_completion {
1653 ($nodes: expr, $receive: expr, $sleep: expr) => {
1654 let features = ChannelFeatures::empty();
1655 $nodes[0].network_graph.add_channel_from_partial_announcement(
1656 42, 53, features, $nodes[0].node.get_our_node_id(), $nodes[1].node.get_our_node_id()
1657 ).expect("Failed to update channel from partial announcement");
1658 let original_graph_description = $nodes[0].network_graph.to_string();
1659 assert!(original_graph_description.contains("42: features: 0000, node_one:"));
1660 assert_eq!($nodes[0].network_graph.read_only().channels().len(), 1);
1664 let log_entries = $nodes[0].logger.lines.lock().unwrap();
1665 let loop_counter = "Calling ChannelManager's timer_tick_occurred".to_string();
1666 if *log_entries.get(&("lightning_background_processor", loop_counter))
1669 // Wait until the loop has gone around at least twice.
1674 let initialization_input = vec![
1675 76, 68, 75, 1, 111, 226, 140, 10, 182, 241, 179, 114, 193, 166, 162, 70, 174, 99, 247,
1676 79, 147, 30, 131, 101, 225, 90, 8, 156, 104, 214, 25, 0, 0, 0, 0, 0, 97, 227, 98, 218,
1677 0, 0, 0, 4, 2, 22, 7, 207, 206, 25, 164, 197, 231, 230, 231, 56, 102, 61, 250, 251,
1678 187, 172, 38, 46, 79, 247, 108, 44, 155, 48, 219, 238, 252, 53, 192, 6, 67, 2, 36, 125,
1679 157, 176, 223, 175, 234, 116, 94, 248, 201, 225, 97, 235, 50, 47, 115, 172, 63, 136,
1680 88, 216, 115, 11, 111, 217, 114, 84, 116, 124, 231, 107, 2, 158, 1, 242, 121, 152, 106,
1681 204, 131, 186, 35, 93, 70, 216, 10, 237, 224, 183, 89, 95, 65, 3, 83, 185, 58, 138,
1682 181, 64, 187, 103, 127, 68, 50, 2, 201, 19, 17, 138, 136, 149, 185, 226, 156, 137, 175,
1683 110, 32, 237, 0, 217, 90, 31, 100, 228, 149, 46, 219, 175, 168, 77, 4, 143, 38, 128,
1684 76, 97, 0, 0, 0, 2, 0, 0, 255, 8, 153, 192, 0, 2, 27, 0, 0, 0, 1, 0, 0, 255, 2, 68,
1685 226, 0, 6, 11, 0, 1, 2, 3, 0, 0, 0, 2, 0, 40, 0, 0, 0, 0, 0, 0, 3, 232, 0, 0, 3, 232,
1686 0, 0, 0, 1, 0, 0, 0, 0, 58, 85, 116, 216, 255, 8, 153, 192, 0, 2, 27, 0, 0, 25, 0, 0,
1687 0, 1, 0, 0, 0, 125, 255, 2, 68, 226, 0, 6, 11, 0, 1, 5, 0, 0, 0, 0, 29, 129, 25, 192,
1689 $nodes[0].rapid_gossip_sync.update_network_graph_no_std(&initialization_input[..], Some(1642291930)).unwrap();
1691 // this should have added two channels and pruned the previous one.
1692 assert_eq!($nodes[0].network_graph.read_only().channels().len(), 2);
1694 $receive.expect("Network graph not pruned within deadline");
1696 // all channels should now be pruned
1697 assert_eq!($nodes[0].network_graph.read_only().channels().len(), 0);
1702 fn test_not_pruning_network_graph_until_graph_sync_completion() {
1703 let (sender, receiver) = std::sync::mpsc::sync_channel(1);
1705 let (_, nodes) = create_nodes(2, "test_not_pruning_network_graph_until_graph_sync_completion");
1706 let data_dir = nodes[0].kv_store.get_data_dir();
1707 let persister = Arc::new(Persister::new(data_dir).with_graph_persistence_notifier(sender));
1709 let event_handler = |_: _| {};
1710 let background_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].rapid_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1712 do_test_not_pruning_network_graph_until_graph_sync_completion!(nodes,
1713 receiver.recv_timeout(Duration::from_secs(super::FIRST_NETWORK_PRUNE_TIMER * 5)),
1714 std::thread::sleep(Duration::from_millis(1)));
1716 background_processor.stop().unwrap();
1720 #[cfg(feature = "futures")]
1721 async fn test_not_pruning_network_graph_until_graph_sync_completion_async() {
1722 let (sender, receiver) = std::sync::mpsc::sync_channel(1);
1724 let (_, nodes) = create_nodes(2, "test_not_pruning_network_graph_until_graph_sync_completion_async");
1725 let data_dir = nodes[0].kv_store.get_data_dir();
1726 let persister = Arc::new(Persister::new(data_dir).with_graph_persistence_notifier(sender));
1728 let (exit_sender, exit_receiver) = tokio::sync::watch::channel(());
1729 let bp_future = super::process_events_async(
1730 persister, |_: _| {async {}}, nodes[0].chain_monitor.clone(), nodes[0].node.clone(),
1731 nodes[0].rapid_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(),
1732 Some(nodes[0].scorer.clone()), move |dur: Duration| {
1733 let mut exit_receiver = exit_receiver.clone();
1734 Box::pin(async move {
1736 _ = tokio::time::sleep(dur) => false,
1737 _ = exit_receiver.changed() => true,
1740 }, false, || Some(Duration::from_secs(1696300000)),
1743 let t1 = tokio::spawn(bp_future);
1744 let t2 = tokio::spawn(async move {
1745 do_test_not_pruning_network_graph_until_graph_sync_completion!(nodes, {
1748 tokio::time::sleep(Duration::from_secs(super::FIRST_NETWORK_PRUNE_TIMER)).await;
1749 if let Ok(()) = receiver.try_recv() { break Ok::<(), ()>(()); }
1753 }, tokio::time::sleep(Duration::from_millis(1)).await);
1754 exit_sender.send(()).unwrap();
1756 let (r1, r2) = tokio::join!(t1, t2);
1757 r1.unwrap().unwrap();
1761 macro_rules! do_test_payment_path_scoring {
1762 ($nodes: expr, $receive: expr) => {
1763 // Ensure that we update the scorer when relevant events are processed. In this case, we ensure
1764 // that we update the scorer upon a payment path succeeding (note that the channel must be
1765 // public or else we won't score it).
1766 // A background event handler for FundingGenerationReady events must be hooked up to a
1767 // running background processor.
1768 let scored_scid = 4242;
1769 let secp_ctx = Secp256k1::new();
1770 let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
1771 let node_1_id = PublicKey::from_secret_key(&secp_ctx, &node_1_privkey);
1773 let path = Path { hops: vec![RouteHop {
1775 node_features: NodeFeatures::empty(),
1776 short_channel_id: scored_scid,
1777 channel_features: ChannelFeatures::empty(),
1779 cltv_expiry_delta: MIN_CLTV_EXPIRY_DELTA as u32,
1780 maybe_announced_channel: true,
1781 }], blinded_tail: None };
1783 $nodes[0].scorer.write_lock().expect(TestResult::PaymentFailure { path: path.clone(), short_channel_id: scored_scid });
1784 $nodes[0].node.push_pending_event(Event::PaymentPathFailed {
1786 payment_hash: PaymentHash([42; 32]),
1787 payment_failed_permanently: false,
1788 failure: PathFailure::OnPath { network_update: None },
1790 short_channel_id: Some(scored_scid),
1792 let event = $receive.expect("PaymentPathFailed not handled within deadline");
1794 Event::PaymentPathFailed { .. } => {},
1795 _ => panic!("Unexpected event"),
1798 // Ensure we'll score payments that were explicitly failed back by the destination as
1800 $nodes[0].scorer.write_lock().expect(TestResult::ProbeSuccess { path: path.clone() });
1801 $nodes[0].node.push_pending_event(Event::PaymentPathFailed {
1803 payment_hash: PaymentHash([42; 32]),
1804 payment_failed_permanently: true,
1805 failure: PathFailure::OnPath { network_update: None },
1807 short_channel_id: None,
1809 let event = $receive.expect("PaymentPathFailed not handled within deadline");
1811 Event::PaymentPathFailed { .. } => {},
1812 _ => panic!("Unexpected event"),
1815 $nodes[0].scorer.write_lock().expect(TestResult::PaymentSuccess { path: path.clone() });
1816 $nodes[0].node.push_pending_event(Event::PaymentPathSuccessful {
1817 payment_id: PaymentId([42; 32]),
1821 let event = $receive.expect("PaymentPathSuccessful not handled within deadline");
1823 Event::PaymentPathSuccessful { .. } => {},
1824 _ => panic!("Unexpected event"),
1827 $nodes[0].scorer.write_lock().expect(TestResult::ProbeSuccess { path: path.clone() });
1828 $nodes[0].node.push_pending_event(Event::ProbeSuccessful {
1829 payment_id: PaymentId([42; 32]),
1830 payment_hash: PaymentHash([42; 32]),
1833 let event = $receive.expect("ProbeSuccessful not handled within deadline");
1835 Event::ProbeSuccessful { .. } => {},
1836 _ => panic!("Unexpected event"),
1839 $nodes[0].scorer.write_lock().expect(TestResult::ProbeFailure { path: path.clone() });
1840 $nodes[0].node.push_pending_event(Event::ProbeFailed {
1841 payment_id: PaymentId([42; 32]),
1842 payment_hash: PaymentHash([42; 32]),
1844 short_channel_id: Some(scored_scid),
1846 let event = $receive.expect("ProbeFailure not handled within deadline");
1848 Event::ProbeFailed { .. } => {},
1849 _ => panic!("Unexpected event"),
1855 fn test_payment_path_scoring() {
1856 let (sender, receiver) = std::sync::mpsc::sync_channel(1);
1857 let event_handler = move |event: Event| match event {
1858 Event::PaymentPathFailed { .. } => sender.send(event).unwrap(),
1859 Event::PaymentPathSuccessful { .. } => sender.send(event).unwrap(),
1860 Event::ProbeSuccessful { .. } => sender.send(event).unwrap(),
1861 Event::ProbeFailed { .. } => sender.send(event).unwrap(),
1862 _ => panic!("Unexpected event: {:?}", event),
1865 let (_, nodes) = create_nodes(1, "test_payment_path_scoring");
1866 let data_dir = nodes[0].kv_store.get_data_dir();
1867 let persister = Arc::new(Persister::new(data_dir));
1868 let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(), Some(nodes[0].scorer.clone()));
1870 do_test_payment_path_scoring!(nodes, receiver.recv_timeout(Duration::from_secs(EVENT_DEADLINE)));
1872 if !std::thread::panicking() {
1873 bg_processor.stop().unwrap();
1876 let log_entries = nodes[0].logger.lines.lock().unwrap();
1877 let expected_log = "Persisting scorer after update".to_string();
1878 assert_eq!(*log_entries.get(&("lightning_background_processor", expected_log)).unwrap(), 5);
1882 #[cfg(feature = "futures")]
1883 async fn test_payment_path_scoring_async() {
1884 let (sender, mut receiver) = tokio::sync::mpsc::channel(1);
1885 let event_handler = move |event: Event| {
1886 let sender_ref = sender.clone();
1889 Event::PaymentPathFailed { .. } => { sender_ref.send(event).await.unwrap() },
1890 Event::PaymentPathSuccessful { .. } => { sender_ref.send(event).await.unwrap() },
1891 Event::ProbeSuccessful { .. } => { sender_ref.send(event).await.unwrap() },
1892 Event::ProbeFailed { .. } => { sender_ref.send(event).await.unwrap() },
1893 _ => panic!("Unexpected event: {:?}", event),
1898 let (_, nodes) = create_nodes(1, "test_payment_path_scoring_async");
1899 let data_dir = nodes[0].kv_store.get_data_dir();
1900 let persister = Arc::new(Persister::new(data_dir));
1902 let (exit_sender, exit_receiver) = tokio::sync::watch::channel(());
1904 let bp_future = super::process_events_async(
1905 persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(),
1906 nodes[0].no_gossip_sync(), nodes[0].peer_manager.clone(), nodes[0].logger.clone(),
1907 Some(nodes[0].scorer.clone()), move |dur: Duration| {
1908 let mut exit_receiver = exit_receiver.clone();
1909 Box::pin(async move {
1911 _ = tokio::time::sleep(dur) => false,
1912 _ = exit_receiver.changed() => true,
1915 }, false, || Some(Duration::ZERO),
1917 let t1 = tokio::spawn(bp_future);
1918 let t2 = tokio::spawn(async move {
1919 do_test_payment_path_scoring!(nodes, receiver.recv().await);
1920 exit_sender.send(()).unwrap();
1922 let log_entries = nodes[0].logger.lines.lock().unwrap();
1923 let expected_log = "Persisting scorer after update".to_string();
1924 assert_eq!(*log_entries.get(&("lightning_background_processor", expected_log)).unwrap(), 5);
1927 let (r1, r2) = tokio::join!(t1, t2);
1928 r1.unwrap().unwrap();