use std::collections::{HashMap, HashSet, hash_map};
use std::sync::Mutex;
-use std::{hash,cmp, mem};
+use std::{cmp, mem};
use std::ops::Deref;
use std::io::Error;
}
impl_writeable!(HTLCUpdate, 0, { payment_hash, payment_preimage, source });
-/// A simple implementation of a [`chain::Watch`] and ChainListener. Can be used to create a
-/// watchtower or watch our own channels.
+/// An implementation of a [`chain::Watch`] and ChainListener.
///
-/// Note that you must provide your own key by which to refer to channels.
-///
-/// If you're accepting remote monitors (ie are implementing a watchtower), you must verify that
-/// users cannot overwrite a given channel by providing a duplicate key. ie you should probably
-/// index by a PublicKey which is required to sign any updates.
-///
-/// If you're using this for local monitoring of your own channels, you probably want to use
-/// `OutPoint` as the key, which will give you a [`chain::Watch`] implementation.
+/// May be used in conjunction with [`ChannelManager`] to monitor channels locally or used
+/// independently to monitor channels remotely.
///
/// [`chain::Watch`]: ../../chain/trait.Watch.html
-///
-/// (C-not exported) due to an unconstrained generic in `Key`
-pub struct ChainMonitor<Key, ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref>
+/// [`ChannelManager`]: ../channelmanager/struct.ChannelManager.html
+pub struct ChainMonitor<ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref>
where T::Target: BroadcasterInterface,
F::Target: FeeEstimator,
L::Target: Logger,
{
/// The monitors
- pub monitors: Mutex<HashMap<Key, ChannelMonitor<ChanSigner>>>,
+ pub monitors: Mutex<HashMap<OutPoint, ChannelMonitor<ChanSigner>>>,
watch_events: Mutex<WatchEventQueue>,
broadcaster: T,
logger: L,
}
}
-impl<Key : Send + cmp::Eq + hash::Hash, ChanSigner: ChannelKeys, T: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send>
- ChainListener for ChainMonitor<Key, ChanSigner, T, F, L>
+impl<ChanSigner: ChannelKeys, T: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send>
+ ChainListener for ChainMonitor<ChanSigner, T, F, L>
where T::Target: BroadcasterInterface,
F::Target: FeeEstimator,
L::Target: Logger,
}
}
-impl<Key : Send + cmp::Eq + hash::Hash + 'static, ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref> ChainMonitor<Key, ChanSigner, T, F, L>
+impl<ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref> ChainMonitor<ChanSigner, T, F, L>
where T::Target: BroadcasterInterface,
F::Target: FeeEstimator,
L::Target: Logger,
{
/// Creates a new object which can be used to monitor several channels given the chain
/// interface with which to register to receive notifications.
- pub fn new(broadcaster: T, logger: L, feeest: F) -> ChainMonitor<Key, ChanSigner, T, F, L> {
+ pub fn new(broadcaster: T, logger: L, feeest: F) -> Self {
Self {
monitors: Mutex::new(HashMap::new()),
watch_events: Mutex::new(WatchEventQueue::new()),
}
}
- /// Adds or updates the monitor which monitors the channel referred to by the given key.
- fn add_monitor_by_key(&self, key: Key, monitor: ChannelMonitor<ChanSigner>) -> Result<(), MonitorUpdateError> {
+ /// Adds the monitor that watches the channel referred to by the given outpoint.
+ fn add_monitor(&self, outpoint: OutPoint, monitor: ChannelMonitor<ChanSigner>) -> Result<(), MonitorUpdateError> {
let mut watch_events = self.watch_events.lock().unwrap();
let mut monitors = self.monitors.lock().unwrap();
- let entry = match monitors.entry(key) {
- hash_map::Entry::Occupied(_) => return Err(MonitorUpdateError("Channel monitor for given key is already present")),
+ let entry = match monitors.entry(outpoint) {
+ hash_map::Entry::Occupied(_) => return Err(MonitorUpdateError("Channel monitor for given outpoint is already present")),
hash_map::Entry::Vacant(e) => e,
};
{
Ok(())
}
- /// Updates the monitor which monitors the channel referred to by the given key.
- fn update_monitor_by_key(&self, key: Key, update: ChannelMonitorUpdate) -> Result<(), MonitorUpdateError> {
+ /// Updates the monitor that watches the channel referred to by the given outpoint.
+ fn update_monitor(&self, outpoint: OutPoint, update: ChannelMonitorUpdate) -> Result<(), MonitorUpdateError> {
let mut monitors = self.monitors.lock().unwrap();
- match monitors.get_mut(&key) {
+ match monitors.get_mut(&outpoint) {
Some(orig_monitor) => {
log_trace!(self.logger, "Updating Channel Monitor for channel {}", log_funding_info!(orig_monitor));
orig_monitor.update_monitor(update, &self.broadcaster, &self.logger)
}
}
-impl<ChanSigner: ChannelKeys, T: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send> chain::Watch for ChainMonitor<OutPoint, ChanSigner, T, F, L>
+impl<ChanSigner: ChannelKeys, T: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send> chain::Watch for ChainMonitor<ChanSigner, T, F, L>
where T::Target: BroadcasterInterface,
F::Target: FeeEstimator,
L::Target: Logger,
type Keys = ChanSigner;
fn watch_channel(&self, funding_txo: OutPoint, monitor: ChannelMonitor<ChanSigner>) -> Result<(), ChannelMonitorUpdateErr> {
- match self.add_monitor_by_key(funding_txo, monitor) {
+ match self.add_monitor(funding_txo, monitor) {
Ok(_) => Ok(()),
Err(_) => Err(ChannelMonitorUpdateErr::PermanentFailure),
}
}
fn update_channel(&self, funding_txo: OutPoint, update: ChannelMonitorUpdate) -> Result<(), ChannelMonitorUpdateErr> {
- match self.update_monitor_by_key(funding_txo, update) {
+ match self.update_monitor(funding_txo, update) {
Ok(_) => Ok(()),
Err(_) => Err(ChannelMonitorUpdateErr::PermanentFailure),
}
}
}
-impl<Key : Send + cmp::Eq + hash::Hash, ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref> events::EventsProvider for ChainMonitor<Key, ChanSigner, T, F, L>
+impl<ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref> events::EventsProvider for ChainMonitor<ChanSigner, T, F, L>
where T::Target: BroadcasterInterface,
F::Target: FeeEstimator,
L::Target: Logger,
}
}
-impl<Key : Send + cmp::Eq + hash::Hash, ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref> chain::WatchEventProvider for ChainMonitor<Key, ChanSigner, T, F, L>
+impl<ChanSigner: ChannelKeys, T: Deref, F: Deref, L: Deref> chain::WatchEventProvider for ChainMonitor<ChanSigner, T, F, L>
where T::Target: BroadcasterInterface,
F::Target: FeeEstimator,
L::Target: Logger,
projects / rust-lightning / blobdiff