use crate::prelude::*;
use crate::sync::{RwLock, RwLockReadGuard, Mutex, MutexGuard};
-use core::iter::FromIterator;
use core::ops::Deref;
use core::sync::atomic::{AtomicUsize, Ordering};
use bitcoin::secp256k1::PublicKey;
///
/// [`Writeable::write`]: crate::util::ser::Writeable::write
fn update_persisted_channel(&self, channel_funding_outpoint: OutPoint, update: Option<&ChannelMonitorUpdate>, data: &ChannelMonitor<ChannelSigner>, update_id: MonitorUpdateId) -> ChannelMonitorUpdateStatus;
+ /// Prevents the channel monitor from being loaded on startup.
+ ///
+ /// Archiving the data in a backup location (rather than deleting it fully) is useful for
+ /// hedging against data loss in case of unexpected failure.
+ fn archive_persisted_channel(&self, channel_funding_outpoint: OutPoint);
}
struct MonitorHolder<ChannelSigner: WriteableEcdsaChannelSigner> {
FN: Fn(&ChannelMonitor<ChannelSigner>, &TransactionData) -> Vec<TransactionOutputs>
{
let err_str = "ChannelMonitor[Update] persistence failed unrecoverably. This indicates we cannot continue normal operation and must shut down.";
- let funding_outpoints: HashSet<OutPoint> = HashSet::from_iter(self.monitors.read().unwrap().keys().cloned());
+ let funding_outpoints = hash_set_from_iter(self.monitors.read().unwrap().keys().cloned());
for funding_outpoint in funding_outpoints.iter() {
let monitor_lock = self.monitors.read().unwrap();
if let Some(monitor_state) = monitor_lock.get(funding_outpoint) {
/// transactions relevant to the watched channels.
pub fn new(chain_source: Option<C>, broadcaster: T, logger: L, feeest: F, persister: P) -> Self {
Self {
- monitors: RwLock::new(HashMap::new()),
+ monitors: RwLock::new(new_hash_map()),
sync_persistence_id: AtomicCounter::new(),
chain_source,
broadcaster,
#[cfg(not(c_bindings))]
/// Lists the pending updates for each [`ChannelMonitor`] (by `OutPoint` being monitored).
pub fn list_pending_monitor_updates(&self) -> HashMap<OutPoint, Vec<MonitorUpdateId>> {
- self.monitors.read().unwrap().iter().map(|(outpoint, holder)| {
+ hash_map_from_iter(self.monitors.read().unwrap().iter().map(|(outpoint, holder)| {
(*outpoint, holder.pending_monitor_updates.lock().unwrap().clone())
- }).collect()
+ }))
}
#[cfg(c_bindings)]
)
}
}
+
+ /// Triggers rebroadcasts of pending claims from force-closed channels after a transaction
+ /// signature generation failure.
+ ///
+ /// `monitor_opt` can be used as a filter to only trigger them for a specific channel monitor.
+ pub fn signer_unblocked(&self, monitor_opt: Option<OutPoint>) {
+ let monitors = self.monitors.read().unwrap();
+ if let Some(funding_txo) = monitor_opt {
+ if let Some(monitor_holder) = monitors.get(&funding_txo) {
+ monitor_holder.monitor.signer_unblocked(
+ &*self.broadcaster, &*self.fee_estimator, &self.logger
+ )
+ }
+ } else {
+ for (_, monitor_holder) in &*monitors {
+ monitor_holder.monitor.signer_unblocked(
+ &*self.broadcaster, &*self.fee_estimator, &self.logger
+ )
+ }
+ }
+ }
+
+ /// Archives fully resolved channel monitors by calling [`Persist::archive_persisted_channel`].
+ ///
+ /// This is useful for pruning fully resolved monitors from the monitor set and primary
+ /// storage so they are not kept in memory and reloaded on restart.
+ ///
+ /// Should be called occasionally (once every handful of blocks or on startup).
+ ///
+ /// Depending on the implementation of [`Persist::archive_persisted_channel`] the monitor
+ /// data could be moved to an archive location or removed entirely.
+ pub fn archive_fully_resolved_channel_monitors(&self) {
+ let mut have_monitors_to_prune = false;
+ for (_, monitor_holder) in self.monitors.read().unwrap().iter() {
+ let logger = WithChannelMonitor::from(&self.logger, &monitor_holder.monitor);
+ if monitor_holder.monitor.is_fully_resolved(&logger) {
+ have_monitors_to_prune = true;
+ }
+ }
+ if have_monitors_to_prune {
+ let mut monitors = self.monitors.write().unwrap();
+ monitors.retain(|funding_txo, monitor_holder| {
+ let logger = WithChannelMonitor::from(&self.logger, &monitor_holder.monitor);
+ if monitor_holder.monitor.is_fully_resolved(&logger) {
+ log_info!(logger,
+ "Archiving fully resolved ChannelMonitor for funding txo {}",
+ funding_txo
+ );
+ self.persister.archive_persisted_channel(*funding_txo);
+ false
+ } else {
+ true
+ }
+ });
+ }
+ }
}
impl<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>