//! It does not manage routing logic (see routing::router::get_route for that) nor does it manage constructing
//! on-chain transactions (it only monitors the chain to watch for any force-closes that might
//! imply it needs to fail HTLCs/payments/channels it manages).
+//!
-use bitcoin::blockdata::block::BlockHeader;
-use bitcoin::blockdata::transaction::Transaction;
+use bitcoin::blockdata::block::{Block, BlockHeader};
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::network::constants::Network;
-use bitcoin::util::hash::BitcoinHash;
use bitcoin::hashes::{Hash, HashEngine};
use bitcoin::hashes::hmac::{Hmac, HmacEngine};
use bitcoin::secp256k1::ecdh::SharedSecret;
use bitcoin::secp256k1;
-use chain::chaininterface::{BroadcasterInterface,ChainListener,FeeEstimator};
-use chain::transaction::OutPoint;
+use chain;
+use chain::Watch;
+use chain::chaininterface::{BroadcasterInterface, FeeEstimator};
+use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, ChannelMonitorUpdateErr, HTLC_FAIL_BACK_BUFFER, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY, MonitorEvent, CLOSED_CHANNEL_UPDATE_ID};
+use chain::transaction::{OutPoint, TransactionData};
use ln::channel::{Channel, ChannelError};
-use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateErr, ManyChannelMonitor, HTLC_FAIL_BACK_BUFFER, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY};
use ln::features::{InitFeatures, NodeFeatures};
use routing::router::{Route, RouteHop};
use ln::msgs;
+use ln::msgs::NetAddress;
use ln::onion_utils;
use ln::msgs::{ChannelMessageHandler, DecodeError, LightningError, OptionalField};
-use chain::keysinterface::{ChannelKeys, KeysInterface, KeysManager, InMemoryChannelKeys};
+use chain::keysinterface::{Sign, KeysInterface, KeysManager, InMemorySigner};
use util::config::UserConfig;
+use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
use util::{byte_utils, events};
use util::ser::{Readable, ReadableArgs, MaybeReadable, Writeable, Writer};
use util::chacha20::{ChaCha20, ChaChaReader};
use std::{cmp, mem};
use std::collections::{HashMap, hash_map, HashSet};
use std::io::{Cursor, Read};
-use std::sync::{Arc, Mutex, MutexGuard, RwLock};
+use std::sync::{Arc, Condvar, Mutex, MutexGuard, RwLock, RwLockReadGuard};
use std::sync::atomic::{AtomicUsize, Ordering};
use std::time::Duration;
+#[cfg(any(test, feature = "allow_wallclock_use"))]
+use std::time::Instant;
use std::marker::{Sync, Send};
use std::ops::Deref;
use bitcoin::hashes::hex::ToHex;
pub(super) enum HTLCForwardInfo {
AddHTLC {
+ forward_info: PendingHTLCInfo,
+
+ // These fields are produced in `forward_htlcs()` and consumed in
+ // `process_pending_htlc_forwards()` for constructing the
+ // `HTLCSource::PreviousHopData` for failed and forwarded
+ // HTLCs.
prev_short_channel_id: u64,
prev_htlc_id: u64,
- forward_info: PendingHTLCInfo,
+ prev_funding_outpoint: OutPoint,
},
FailHTLC {
htlc_id: u64,
/// Tracks the inbound corresponding to an outbound HTLC
#[derive(Clone, PartialEq)]
-pub(super) struct HTLCPreviousHopData {
+pub(crate) struct HTLCPreviousHopData {
short_channel_id: u64,
htlc_id: u64,
incoming_packet_shared_secret: [u8; 32],
+
+ // This field is consumed by `claim_funds_from_hop()` when updating a force-closed backwards
+ // channel with a preimage provided by the forward channel.
+ outpoint: OutPoint,
}
struct ClaimableHTLC {
/// Tracks the inbound corresponding to an outbound HTLC
#[derive(Clone, PartialEq)]
-pub(super) enum HTLCSource {
+pub(crate) enum HTLCSource {
PreviousHopData(HTLCPreviousHopData),
OutboundRoute {
path: Vec<RouteHop>,
}
/// payment_hash type, use to cross-lock hop
+/// (C-not exported) as we just use [u8; 32] directly
#[derive(Hash, Copy, Clone, PartialEq, Eq, Debug)]
pub struct PaymentHash(pub [u8;32]);
/// payment_preimage type, use to route payment between hop
+/// (C-not exported) as we just use [u8; 32] directly
#[derive(Hash, Copy, Clone, PartialEq, Eq, Debug)]
pub struct PaymentPreimage(pub [u8;32]);
/// payment_secret type, use to authenticate sender to the receiver and tie MPP HTLCs together
+/// (C-not exported) as we just use [u8; 32] directly
#[derive(Hash, Copy, Clone, PartialEq, Eq, Debug)]
pub struct PaymentSecret(pub [u8;32]);
}
// Note this is only exposed in cfg(test):
-pub(super) struct ChannelHolder<ChanSigner: ChannelKeys> {
- pub(super) by_id: HashMap<[u8; 32], Channel<ChanSigner>>,
+pub(super) struct ChannelHolder<Signer: Sign> {
+ pub(super) by_id: HashMap<[u8; 32], Channel<Signer>>,
pub(super) short_to_id: HashMap<u64, [u8; 32]>,
/// short channel id -> forward infos. Key of 0 means payments received
/// Note that while this is held in the same mutex as the channels themselves, no consistency
claimable_htlcs: HashMap<(PaymentHash, Option<PaymentSecret>), Vec<ClaimableHTLC>>,
/// Messages to send to peers - pushed to in the same lock that they are generated in (except
/// for broadcast messages, where ordering isn't as strict).
- pub(super) pending_msg_events: Vec<events::MessageSendEvent>,
+ pub(super) pending_msg_events: Vec<MessageSendEvent>,
}
/// State we hold per-peer. In the future we should put channels in here, but for now we only hold
/// issues such as overly long function definitions. Note that the ChannelManager can take any
/// type that implements KeysInterface for its keys manager, but this type alias chooses the
/// concrete type of the KeysManager.
-pub type SimpleArcChannelManager<M, T, F, L> = Arc<ChannelManager<InMemoryChannelKeys, Arc<M>, Arc<T>, Arc<KeysManager>, Arc<F>, Arc<L>>>;
+pub type SimpleArcChannelManager<M, T, F, L> = Arc<ChannelManager<InMemorySigner, Arc<M>, Arc<T>, Arc<KeysManager>, Arc<F>, Arc<L>>>;
/// SimpleRefChannelManager is a type alias for a ChannelManager reference, and is the reference
/// counterpart to the SimpleArcChannelManager type alias. Use this type by default when you don't
/// helps with issues such as long function definitions. Note that the ChannelManager can take any
/// type that implements KeysInterface for its keys manager, but this type alias chooses the
/// concrete type of the KeysManager.
-pub type SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, M, T, F, L> = ChannelManager<InMemoryChannelKeys, &'a M, &'b T, &'c KeysManager, &'d F, &'e L>;
+pub type SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, M, T, F, L> = ChannelManager<InMemorySigner, &'a M, &'b T, &'c KeysManager, &'d F, &'e L>;
/// Manager which keeps track of a number of channels and sends messages to the appropriate
/// channel, also tracking HTLC preimages and forwarding onion packets appropriately.
///
/// Note that you can be a bit lazier about writing out ChannelManager than you can be with
/// ChannelMonitors. With ChannelMonitors you MUST write each monitor update out to disk before
-/// returning from ManyChannelMonitor::add_/update_monitor, with ChannelManagers, writing updates
+/// returning from chain::Watch::watch_/update_channel, with ChannelManagers, writing updates
/// happens out-of-band (and will prevent any other ChannelManager operations from occurring during
/// the serialization process). If the deserialized version is out-of-date compared to the
/// ChannelMonitors passed by reference to read(), those channels will be force-closed based on the
/// essentially you should default to using a SimpleRefChannelManager, and use a
/// SimpleArcChannelManager when you require a ChannelManager with a static lifetime, such as when
/// you're using lightning-net-tokio.
-pub struct ChannelManager<ChanSigner: ChannelKeys, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+pub struct ChannelManager<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
default_configuration: UserConfig,
genesis_hash: BlockHash,
fee_estimator: F,
- monitor: M,
+ chain_monitor: M,
tx_broadcaster: T,
#[cfg(test)]
last_block_hash: Mutex<BlockHash>,
secp_ctx: Secp256k1<secp256k1::All>,
- #[cfg(test)]
- pub(super) channel_state: Mutex<ChannelHolder<ChanSigner>>,
- #[cfg(not(test))]
- channel_state: Mutex<ChannelHolder<ChanSigner>>,
+ #[cfg(any(test, feature = "_test_utils"))]
+ pub(super) channel_state: Mutex<ChannelHolder<Signer>>,
+ #[cfg(not(any(test, feature = "_test_utils")))]
+ channel_state: Mutex<ChannelHolder<Signer>>,
our_network_key: SecretKey,
/// Used to track the last value sent in a node_announcement "timestamp" field. We ensure this
/// Used when we have to take a BIG lock to make sure everything is self-consistent.
/// Essentially just when we're serializing ourselves out.
/// Taken first everywhere where we are making changes before any other locks.
+ /// When acquiring this lock in read mode, rather than acquiring it directly, call
+ /// `PersistenceNotifierGuard::new(..)` and pass the lock to it, to ensure the PersistenceNotifier
+ /// the lock contains sends out a notification when the lock is released.
total_consistency_lock: RwLock<()>,
+ persistence_notifier: PersistenceNotifier,
+
keys_manager: K,
logger: L,
}
+/// Whenever we release the `ChannelManager`'s `total_consistency_lock`, from read mode, it is
+/// desirable to notify any listeners on `wait_timeout`/`wait` that new updates are available for
+/// persistence. Therefore, this struct is responsible for locking the total consistency lock and,
+/// upon going out of scope, sending the aforementioned notification (since the lock being released
+/// indicates that the updates are ready for persistence).
+struct PersistenceNotifierGuard<'a> {
+ persistence_notifier: &'a PersistenceNotifier,
+ // We hold onto this result so the lock doesn't get released immediately.
+ _read_guard: RwLockReadGuard<'a, ()>,
+}
+
+impl<'a> PersistenceNotifierGuard<'a> {
+ fn new(lock: &'a RwLock<()>, notifier: &'a PersistenceNotifier) -> Self {
+ let read_guard = lock.read().unwrap();
+
+ Self {
+ persistence_notifier: notifier,
+ _read_guard: read_guard,
+ }
+ }
+}
+
+impl<'a> Drop for PersistenceNotifierGuard<'a> {
+ fn drop(&mut self) {
+ self.persistence_notifier.notify();
+ }
+}
+
/// The amount of time we require our counterparty wait to claim their money (ie time between when
/// we, or our watchtower, must check for them having broadcast a theft transaction).
pub(crate) const BREAKDOWN_TIMEOUT: u16 = 6 * 24;
const CHECK_CLTV_EXPIRY_SANITY_2: u32 = CLTV_EXPIRY_DELTA as u32 - LATENCY_GRACE_PERIOD_BLOCKS - 2*CLTV_CLAIM_BUFFER;
/// Details of a channel, as returned by ChannelManager::list_channels and ChannelManager::list_usable_channels
+#[derive(Clone)]
pub struct ChannelDetails {
/// The channel's ID (prior to funding transaction generation, this is a random 32 bytes,
/// thereafter this is the txid of the funding transaction xor the funding transaction output).
/// If a payment fails to send, it can be in one of several states. This enum is returned as the
/// Err() type describing which state the payment is in, see the description of individual enum
/// states for more.
-#[derive(Debug)]
+#[derive(Clone, Debug)]
pub enum PaymentSendFailure {
/// A parameter which was passed to send_payment was invalid, preventing us from attempting to
/// send the payment at all. No channel state has been changed or messages sent to peers, and
}
macro_rules! handle_error {
- ($self: ident, $internal: expr, $their_node_id: expr) => {
+ ($self: ident, $internal: expr, $counterparty_node_id: expr) => {
match $internal {
Ok(msg) => Ok(msg),
Err(MsgHandleErrInternal { err, shutdown_finish }) => {
if let msgs::ErrorAction::IgnoreError = err.action {
} else {
msg_events.push(events::MessageSendEvent::HandleError {
- node_id: $their_node_id,
+ node_id: $counterparty_node_id,
action: err.action.clone()
});
}
}
}
-impl<ChanSigner: ChannelKeys, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<ChanSigner, M, T, K, F, L>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
///
/// Users need to notify the new ChannelManager when a new block is connected or
/// disconnected using its `block_connected` and `block_disconnected` methods.
- /// However, rather than calling these methods directly, the user should register
- /// the ChannelManager as a listener to the BlockNotifier and call the BlockNotifier's
- /// `block_(dis)connected` methods, which will notify all registered listeners in one
- /// go.
- pub fn new(network: Network, fee_est: F, monitor: M, tx_broadcaster: T, logger: L, keys_manager: K, config: UserConfig, current_blockchain_height: usize) -> Self {
- let secp_ctx = Secp256k1::new();
+ pub fn new(network: Network, fee_est: F, chain_monitor: M, tx_broadcaster: T, logger: L, keys_manager: K, config: UserConfig, current_blockchain_height: usize) -> Self {
+ let mut secp_ctx = Secp256k1::new();
+ secp_ctx.seeded_randomize(&keys_manager.get_secure_random_bytes());
ChannelManager {
default_configuration: config.clone(),
- genesis_hash: genesis_block(network).header.bitcoin_hash(),
+ genesis_hash: genesis_block(network).header.block_hash(),
fee_estimator: fee_est,
- monitor,
+ chain_monitor,
tx_broadcaster,
latest_block_height: AtomicUsize::new(current_blockchain_height),
pending_events: Mutex::new(Vec::new()),
total_consistency_lock: RwLock::new(()),
+ persistence_notifier: PersistenceNotifier::new(),
keys_manager,
let channel = Channel::new_outbound(&self.fee_estimator, &self.keys_manager, their_network_key, channel_value_satoshis, push_msat, user_id, config)?;
let res = channel.get_open_channel(self.genesis_hash.clone());
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ // We want to make sure the lock is actually acquired by PersistenceNotifierGuard.
+ debug_assert!(&self.total_consistency_lock.try_write().is_err());
+
let mut channel_state = self.channel_state.lock().unwrap();
match channel_state.by_id.entry(channel.channel_id()) {
hash_map::Entry::Occupied(_) => {
Ok(())
}
- fn list_channels_with_filter<Fn: FnMut(&(&[u8; 32], &Channel<ChanSigner>)) -> bool>(&self, f: Fn) -> Vec<ChannelDetails> {
+ fn list_channels_with_filter<Fn: FnMut(&(&[u8; 32], &Channel<Signer>)) -> bool>(&self, f: Fn) -> Vec<ChannelDetails> {
let mut res = Vec::new();
{
let channel_state = self.channel_state.lock().unwrap();
res.push(ChannelDetails {
channel_id: (*channel_id).clone(),
short_channel_id: channel.get_short_channel_id(),
- remote_network_id: channel.get_their_node_id(),
+ remote_network_id: channel.get_counterparty_node_id(),
counterparty_features: InitFeatures::empty(),
channel_value_satoshis: channel.get_value_satoshis(),
inbound_capacity_msat,
///
/// May generate a SendShutdown message event on success, which should be relayed.
pub fn close_channel(&self, channel_id: &[u8; 32]) -> Result<(), APIError> {
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let (mut failed_htlcs, chan_option) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
hash_map::Entry::Occupied(mut chan_entry) => {
let (shutdown_msg, failed_htlcs) = chan_entry.get_mut().get_shutdown()?;
channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: chan_entry.get().get_their_node_id(),
+ node_id: chan_entry.get().get_counterparty_node_id(),
msg: shutdown_msg
});
if chan_entry.get().is_shutdown() {
// force-closing. The monitor update on the required in-memory copy should broadcast
// the latest local state, which is the best we can do anyway. Thus, it is safe to
// ignore the result here.
- let _ = self.monitor.update_monitor(funding_txo, monitor_update);
+ let _ = self.chain_monitor.update_channel(funding_txo, monitor_update);
}
}
- /// Force closes a channel, immediately broadcasting the latest local commitment transaction to
- /// the chain and rejecting new HTLCs on the given channel.
- pub fn force_close_channel(&self, channel_id: &[u8; 32]) {
- let _ = self.total_consistency_lock.read().unwrap();
-
+ fn force_close_channel_with_peer(&self, channel_id: &[u8; 32], peer_node_id: Option<&PublicKey>) -> Result<(), APIError> {
let mut chan = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- if let Some(chan) = channel_state.by_id.remove(channel_id) {
- if let Some(short_id) = chan.get_short_channel_id() {
+ if let hash_map::Entry::Occupied(chan) = channel_state.by_id.entry(channel_id.clone()) {
+ if let Some(node_id) = peer_node_id {
+ if chan.get().get_counterparty_node_id() != *node_id {
+ // Error or Ok here doesn't matter - the result is only exposed publicly
+ // when peer_node_id is None anyway.
+ return Ok(());
+ }
+ }
+ if let Some(short_id) = chan.get().get_short_channel_id() {
channel_state.short_to_id.remove(&short_id);
}
- chan
+ chan.remove_entry().1
} else {
- return;
+ return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
}
};
log_trace!(self.logger, "Force-closing channel {}", log_bytes!(channel_id[..]));
msg: update
});
}
+
+ Ok(())
+ }
+
+ /// Force closes a channel, immediately broadcasting the latest local commitment transaction to
+ /// the chain and rejecting new HTLCs on the given channel. Fails if channel_id is unknown to the manager.
+ pub fn force_close_channel(&self, channel_id: &[u8; 32]) -> Result<(), APIError> {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ self.force_close_channel_with_peer(channel_id, None)
}
/// Force close all channels, immediately broadcasting the latest local commitment transaction
/// for each to the chain and rejecting new HTLCs on each.
pub fn force_close_all_channels(&self) {
for chan in self.list_channels() {
- self.force_close_channel(&chan.channel_id);
+ let _ = self.force_close_channel(&chan.channel_id);
}
}
- fn decode_update_add_htlc_onion(&self, msg: &msgs::UpdateAddHTLC) -> (PendingHTLCStatus, MutexGuard<ChannelHolder<ChanSigner>>) {
+ fn decode_update_add_htlc_onion(&self, msg: &msgs::UpdateAddHTLC) -> (PendingHTLCStatus, MutexGuard<ChannelHolder<Signer>>) {
macro_rules! return_malformed_err {
($msg: expr, $err_code: expr) => {
{
PendingHTLCStatus::Forward(PendingHTLCInfo {
routing: PendingHTLCRouting::Forward {
onion_packet: outgoing_packet,
- short_channel_id: short_channel_id,
+ short_channel_id,
},
payment_hash: msg.payment_hash.clone(),
incoming_shared_secret: shared_secret,
if !chan.is_live() { // channel_disabled
break Some(("Forwarding channel is not in a ready state.", 0x1000 | 20, Some(self.get_channel_update(chan).unwrap())));
}
- if *amt_to_forward < chan.get_their_htlc_minimum_msat() { // amount_below_minimum
+ if *amt_to_forward < chan.get_counterparty_htlc_minimum_msat() { // amount_below_minimum
break Some(("HTLC amount was below the htlc_minimum_msat", 0x1000 | 11, Some(self.get_channel_update(chan).unwrap())));
}
- let fee = amt_to_forward.checked_mul(chan.get_fee_proportional_millionths() as u64).and_then(|prop_fee| { (prop_fee / 1000000).checked_add(chan.get_our_fee_base_msat(&self.fee_estimator) as u64) });
+ let fee = amt_to_forward.checked_mul(chan.get_fee_proportional_millionths() as u64).and_then(|prop_fee| { (prop_fee / 1000000).checked_add(chan.get_holder_fee_base_msat(&self.fee_estimator) as u64) });
if fee.is_none() || msg.amount_msat < fee.unwrap() || (msg.amount_msat - fee.unwrap()) < *amt_to_forward { // fee_insufficient
break Some(("Prior hop has deviated from specified fees parameters or origin node has obsolete ones", 0x1000 | 12, Some(self.get_channel_update(chan).unwrap())));
}
/// only fails if the channel does not yet have an assigned short_id
/// May be called with channel_state already locked!
- fn get_channel_update(&self, chan: &Channel<ChanSigner>) -> Result<msgs::ChannelUpdate, LightningError> {
+ fn get_channel_update(&self, chan: &Channel<Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
let short_channel_id = match chan.get_short_channel_id() {
None => return Err(LightningError{err: "Channel not yet established".to_owned(), action: msgs::ErrorAction::IgnoreError}),
Some(id) => id,
};
- let were_node_one = PublicKey::from_secret_key(&self.secp_ctx, &self.our_network_key).serialize()[..] < chan.get_their_node_id().serialize()[..];
+ let were_node_one = PublicKey::from_secret_key(&self.secp_ctx, &self.our_network_key).serialize()[..] < chan.get_counterparty_node_id().serialize()[..];
let unsigned = msgs::UnsignedChannelUpdate {
chain_hash: self.genesis_hash,
- short_channel_id: short_channel_id,
+ short_channel_id,
timestamp: chan.get_update_time_counter(),
flags: (!were_node_one) as u8 | ((!chan.is_live() as u8) << 1),
cltv_expiry_delta: CLTV_EXPIRY_DELTA,
- htlc_minimum_msat: chan.get_our_htlc_minimum_msat(),
+ htlc_minimum_msat: chan.get_counterparty_htlc_minimum_msat(),
htlc_maximum_msat: OptionalField::Present(chan.get_announced_htlc_max_msat()),
- fee_base_msat: chan.get_our_fee_base_msat(&self.fee_estimator),
+ fee_base_msat: chan.get_holder_fee_base_msat(&self.fee_estimator),
fee_proportional_millionths: chan.get_fee_proportional_millionths(),
excess_data: Vec::new(),
};
}
let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, prng_seed, payment_hash);
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let err: Result<(), _> = loop {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
if let hash_map::Entry::Occupied(mut chan) = channel_state.by_id.entry(id) {
match {
- if chan.get().get_their_node_id() != path.first().unwrap().pubkey {
+ if chan.get().get_counterparty_node_id() != path.first().unwrap().pubkey {
return Err(APIError::RouteError{err: "Node ID mismatch on first hop!"});
}
if !chan.get().is_live() {
}, onion_packet, &self.logger), channel_state, chan)
} {
Some((update_add, commitment_signed, monitor_update)) => {
- if let Err(e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
maybe_break_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, true);
// Note that MonitorUpdateFailed here indicates (per function docs)
// that we will resend the commitment update once monitor updating
/// May panic if the funding_txo is duplicative with some other channel (note that this should
/// be trivially prevented by using unique funding transaction keys per-channel).
pub fn funding_transaction_generated(&self, temporary_channel_id: &[u8; 32], funding_txo: OutPoint) {
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let (chan, msg) = {
let (res, chan) = match self.channel_state.lock().unwrap().by_id.remove(temporary_channel_id) {
},
None => return
};
- match handle_error!(self, res, chan.get_their_node_id()) {
+ match handle_error!(self, res, chan.get_counterparty_node_id()) {
Ok(funding_msg) => {
(chan, funding_msg)
},
let mut channel_state = self.channel_state.lock().unwrap();
channel_state.pending_msg_events.push(events::MessageSendEvent::SendFundingCreated {
- node_id: chan.get_their_node_id(),
- msg: msg,
+ node_id: chan.get_counterparty_node_id(),
+ msg,
});
match channel_state.by_id.entry(chan.channel_id()) {
hash_map::Entry::Occupied(_) => {
}
}
- fn get_announcement_sigs(&self, chan: &Channel<ChanSigner>) -> Option<msgs::AnnouncementSignatures> {
+ fn get_announcement_sigs(&self, chan: &Channel<Signer>) -> Option<msgs::AnnouncementSignatures> {
if !chan.should_announce() {
log_trace!(self.logger, "Can't send announcement_signatures for private channel {}", log_bytes!(chan.channel_id()));
return None
// be absurd. We ensure this by checking that at least 500 (our stated public contract on when
// broadcast_node_announcement panics) of the maximum-length addresses would fit in a 64KB
// message...
- const HALF_MESSAGE_IS_ADDRS: u32 = ::std::u16::MAX as u32 / (msgs::NetAddress::MAX_LEN as u32 + 1) / 2;
+ const HALF_MESSAGE_IS_ADDRS: u32 = ::std::u16::MAX as u32 / (NetAddress::MAX_LEN as u32 + 1) / 2;
#[deny(const_err)]
#[allow(dead_code)]
// ...by failing to compile if the number of addresses that would be half of a message is
/// only Tor Onion addresses.
///
/// Panics if addresses is absurdly large (more than 500).
- pub fn broadcast_node_announcement(&self, rgb: [u8; 3], alias: [u8; 32], addresses: Vec<msgs::NetAddress>) {
- let _ = self.total_consistency_lock.read().unwrap();
+ pub fn broadcast_node_announcement(&self, rgb: [u8; 3], alias: [u8; 32], addresses: Vec<NetAddress>) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
if addresses.len() > 500 {
panic!("More than half the message size was taken up by public addresses!");
/// Should only really ever be called in response to a PendingHTLCsForwardable event.
/// Will likely generate further events.
pub fn process_pending_htlc_forwards(&self) {
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut new_events = Vec::new();
let mut failed_forwards = Vec::new();
failed_forwards.reserve(pending_forwards.len());
for forward_info in pending_forwards.drain(..) {
match forward_info {
- HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info } => {
+ HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info,
+ prev_funding_outpoint } => {
let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
htlc_id: prev_htlc_id,
incoming_packet_shared_secret: forward_info.incoming_shared_secret,
});
HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
routing: PendingHTLCRouting::Forward {
onion_packet, ..
- }, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value }, } => {
+ }, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value },
+ prev_funding_outpoint } => {
log_trace!(self.logger, "Adding HTLC from short id {} with payment_hash {} to channel with short id {} after delay", log_bytes!(payment_hash.0), prev_short_channel_id, short_chan_id);
let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
htlc_id: prev_htlc_id,
incoming_packet_shared_secret: incoming_shared_secret,
});
Err(e) => {
// We surely failed send_commitment due to bad keys, in that case
// close channel and then send error message to peer.
- let their_node_id = chan.get().get_their_node_id();
+ let counterparty_node_id = chan.get().get_counterparty_node_id();
let err: Result<(), _> = match e {
ChannelError::Ignore(_) => {
panic!("Stated return value requirements in send_commitment() were not met");
},
ChannelError::CloseDelayBroadcast(_) => { panic!("Wait is only generated on receipt of channel_reestablish, which is handled by try_chan_entry, we don't bother to support it here"); }
};
- handle_errors.push((their_node_id, err));
+ handle_errors.push((counterparty_node_id, err));
continue;
}
};
- if let Err(e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
- handle_errors.push((chan.get().get_their_node_id(), handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, true)));
+ if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ handle_errors.push((chan.get().get_counterparty_node_id(), handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, true)));
continue;
}
channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_their_node_id(),
+ node_id: chan.get().get_counterparty_node_id(),
updates: msgs::CommitmentUpdate {
update_add_htlcs: add_htlc_msgs,
update_fulfill_htlcs: Vec::new(),
match forward_info {
HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
routing: PendingHTLCRouting::Receive { payment_data, incoming_cltv_expiry },
- incoming_shared_secret, payment_hash, amt_to_forward, .. }, } => {
+ incoming_shared_secret, payment_hash, amt_to_forward, .. },
+ prev_funding_outpoint } => {
let prev_hop = HTLCPreviousHopData {
short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
htlc_id: prev_htlc_id,
incoming_packet_shared_secret: incoming_shared_secret,
};
);
failed_forwards.push((HTLCSource::PreviousHopData(HTLCPreviousHopData {
short_channel_id: htlc.prev_hop.short_channel_id,
+ outpoint: prev_funding_outpoint,
htlc_id: htlc.prev_hop.htlc_id,
incoming_packet_shared_secret: htlc.prev_hop.incoming_packet_shared_secret,
}), payment_hash,
}
} else if total_value == data.total_msat {
new_events.push(events::Event::PaymentReceived {
- payment_hash: payment_hash,
+ payment_hash,
payment_secret: Some(data.payment_secret),
amt: total_value,
});
}
} else {
new_events.push(events::Event::PaymentReceived {
- payment_hash: payment_hash,
+ payment_hash,
payment_secret: None,
amt: amt_to_forward,
});
self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source, &payment_hash, failure_reason);
}
- for (their_node_id, err) in handle_errors.drain(..) {
- let _ = handle_error!(self, err, their_node_id);
+ for (counterparty_node_id, err) in handle_errors.drain(..) {
+ let _ = handle_error!(self, err, counterparty_node_id);
}
if new_events.is_empty() { return }
///
/// This method handles all the details, and must be called roughly once per minute.
pub fn timer_chan_freshness_every_min(&self) {
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
for (_, chan) in channel_state.by_id.iter_mut() {
/// Returns false if no payment was found to fail backwards, true if the process of failing the
/// HTLC backwards has been started.
pub fn fail_htlc_backwards(&self, payment_hash: &PaymentHash, payment_secret: &Option<PaymentSecret>) -> bool {
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut channel_state = Some(self.channel_state.lock().unwrap());
let removed_source = channel_state.as_mut().unwrap().claimable_htlcs.remove(&(*payment_hash, *payment_secret));
/// to fail and take the channel_state lock for each iteration (as we take ownership and may
/// drop it). In other words, no assumptions are made that entries in claimable_htlcs point to
/// still-available channels.
- fn fail_htlc_backwards_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<ChanSigner>>, source: HTLCSource, payment_hash: &PaymentHash, onion_error: HTLCFailReason) {
+ fn fail_htlc_backwards_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<Signer>>, source: HTLCSource, payment_hash: &PaymentHash, onion_error: HTLCFailReason) {
//TODO: There is a timing attack here where if a node fails an HTLC back to us they can
//identify whether we sent it or not based on the (I presume) very different runtime
//between the branches here. We should make this async and move it into the forward HTLCs
}
}
},
- HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret }) => {
+ HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret, .. }) => {
let err_packet = match onion_error {
HTLCFailReason::Reason { failure_code, data } => {
log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with code {}", log_bytes!(payment_hash.0), failure_code);
pub fn claim_funds(&self, payment_preimage: PaymentPreimage, payment_secret: &Option<PaymentSecret>, expected_amount: u64) -> bool {
let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut channel_state = Some(self.channel_state.lock().unwrap());
let removed_source = channel_state.as_mut().unwrap().claimable_htlcs.remove(&(payment_hash, *payment_secret));
// which were generated.
channel_state.take();
- for (their_node_id, err) in errs.drain(..) {
+ for (counterparty_node_id, err) in errs.drain(..) {
let res: Result<(), _> = Err(err);
- let _ = handle_error!(self, res, their_node_id);
+ let _ = handle_error!(self, res, counterparty_node_id);
}
claimed_any_htlcs
} else { false }
}
- fn claim_funds_from_hop(&self, channel_state_lock: &mut MutexGuard<ChannelHolder<ChanSigner>>, prev_hop: HTLCPreviousHopData, payment_preimage: PaymentPreimage) -> Result<(), Option<(PublicKey, MsgHandleErrInternal)>> {
+ fn claim_funds_from_hop(&self, channel_state_lock: &mut MutexGuard<ChannelHolder<Signer>>, prev_hop: HTLCPreviousHopData, payment_preimage: PaymentPreimage) -> Result<(), Option<(PublicKey, MsgHandleErrInternal)>> {
//TODO: Delay the claimed_funds relaying just like we do outbound relay!
let channel_state = &mut **channel_state_lock;
let chan_id = match channel_state.short_to_id.get(&prev_hop.short_channel_id) {
match chan.get_mut().get_update_fulfill_htlc_and_commit(prev_hop.htlc_id, payment_preimage, &self.logger) {
Ok((msgs, monitor_option)) => {
if let Some(monitor_update) = monitor_option {
- if let Err(e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
if was_frozen_for_monitor {
assert!(msgs.is_none());
} else {
- return Err(Some((chan.get().get_their_node_id(), handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, msgs.is_some()).unwrap_err())));
+ return Err(Some((chan.get().get_counterparty_node_id(), handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, msgs.is_some()).unwrap_err())));
}
}
}
if let Some((msg, commitment_signed)) = msgs {
channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_their_node_id(),
+ node_id: chan.get().get_counterparty_node_id(),
updates: msgs::CommitmentUpdate {
update_add_htlcs: Vec::new(),
update_fulfill_htlcs: vec![msg],
} else { unreachable!(); }
}
- fn claim_funds_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<ChanSigner>>, source: HTLCSource, payment_preimage: PaymentPreimage) {
+ fn claim_funds_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<Signer>>, source: HTLCSource, payment_preimage: PaymentPreimage) {
match source {
HTLCSource::OutboundRoute { .. } => {
mem::drop(channel_state_lock);
});
},
HTLCSource::PreviousHopData(hop_data) => {
- if let Err((their_node_id, err)) = match self.claim_funds_from_hop(&mut channel_state_lock, hop_data, payment_preimage) {
+ let prev_outpoint = hop_data.outpoint;
+ if let Err((counterparty_node_id, err)) = match self.claim_funds_from_hop(&mut channel_state_lock, hop_data, payment_preimage) {
Ok(()) => Ok(()),
Err(None) => {
- // TODO: There is probably a channel monitor somewhere that needs to
- // learn the preimage as the channel already hit the chain and that's
- // why it's missing.
+ let preimage_update = ChannelMonitorUpdate {
+ update_id: CLOSED_CHANNEL_UPDATE_ID,
+ updates: vec![ChannelMonitorUpdateStep::PaymentPreimage {
+ payment_preimage: payment_preimage.clone(),
+ }],
+ };
+ // We update the ChannelMonitor on the backward link, after
+ // receiving an offchain preimage event from the forward link (the
+ // event being update_fulfill_htlc).
+ if let Err(e) = self.chain_monitor.update_channel(prev_outpoint, preimage_update) {
+ log_error!(self.logger, "Critical error: failed to update channel monitor with preimage {:?}: {:?}",
+ payment_preimage, e);
+ }
Ok(())
},
Err(Some(res)) => Err(res),
} {
mem::drop(channel_state_lock);
let res: Result<(), _> = Err(err);
- let _ = handle_error!(self, res, their_node_id);
+ let _ = handle_error!(self, res, counterparty_node_id);
}
},
}
/// exists largely only to prevent races between this and concurrent update_monitor calls.
///
/// Thus, the anticipated use is, at a high level:
- /// 1) You register a ManyChannelMonitor with this ChannelManager,
+ /// 1) You register a chain::Watch with this ChannelManager,
/// 2) it stores each update to disk, and begins updating any remote (eg watchtower) copies of
/// said ChannelMonitors as it can, returning ChannelMonitorUpdateErr::TemporaryFailures
/// any time it cannot do so instantly,
/// 4) once all remote copies are updated, you call this function with the update_id that
/// completed, and once it is the latest the Channel will be re-enabled.
pub fn channel_monitor_updated(&self, funding_txo: &OutPoint, highest_applied_update_id: u64) {
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut close_results = Vec::new();
let mut htlc_forwards = Vec::new();
let (raa, commitment_update, order, pending_forwards, mut pending_failures, needs_broadcast_safe, funding_locked) = channel.monitor_updating_restored(&self.logger);
if !pending_forwards.is_empty() {
- htlc_forwards.push((channel.get_short_channel_id().expect("We can't have pending forwards before funding confirmation"), pending_forwards));
+ htlc_forwards.push((channel.get_short_channel_id().expect("We can't have pending forwards before funding confirmation"), funding_txo.clone(), pending_forwards));
}
htlc_failures.append(&mut pending_failures);
macro_rules! handle_cs { () => {
if let Some(update) = commitment_update {
pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
updates: update,
});
}
macro_rules! handle_raa { () => {
if let Some(revoke_and_ack) = raa {
pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
msg: revoke_and_ack,
});
}
}
if let Some(msg) = funding_locked {
pending_msg_events.push(events::MessageSendEvent::SendFundingLocked {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
msg,
});
if let Some(announcement_sigs) = self.get_announcement_sigs(channel) {
pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
msg: announcement_sigs,
});
}
}
}
- fn internal_open_channel(&self, their_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::OpenChannel) -> Result<(), MsgHandleErrInternal> {
+ fn internal_open_channel(&self, counterparty_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::OpenChannel) -> Result<(), MsgHandleErrInternal> {
if msg.chain_hash != self.genesis_hash {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Unknown genesis block hash".to_owned(), msg.temporary_channel_id.clone()));
}
- let channel = Channel::new_from_req(&self.fee_estimator, &self.keys_manager, their_node_id.clone(), their_features, msg, 0, &self.default_configuration)
+ let channel = Channel::new_from_req(&self.fee_estimator, &self.keys_manager, counterparty_node_id.clone(), their_features, msg, 0, &self.default_configuration)
.map_err(|e| MsgHandleErrInternal::from_chan_no_close(e, msg.temporary_channel_id))?;
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
hash_map::Entry::Occupied(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("temporary_channel_id collision!".to_owned(), msg.temporary_channel_id.clone())),
hash_map::Entry::Vacant(entry) => {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg: channel.get_accept_channel(),
});
entry.insert(channel);
Ok(())
}
- fn internal_accept_channel(&self, their_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::AcceptChannel) -> Result<(), MsgHandleErrInternal> {
+ fn internal_accept_channel(&self, counterparty_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::AcceptChannel) -> Result<(), MsgHandleErrInternal> {
let (value, output_script, user_id) = {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.temporary_channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
}
try_chan_entry!(self, chan.get_mut().accept_channel(&msg, &self.default_configuration, their_features), channel_state, chan);
pending_events.push(events::Event::FundingGenerationReady {
temporary_channel_id: msg.temporary_channel_id,
channel_value_satoshis: value,
- output_script: output_script,
+ output_script,
user_channel_id: user_id,
});
Ok(())
}
- fn internal_funding_created(&self, their_node_id: &PublicKey, msg: &msgs::FundingCreated) -> Result<(), MsgHandleErrInternal> {
- let ((funding_msg, monitor_update), mut chan) = {
+ fn internal_funding_created(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingCreated) -> Result<(), MsgHandleErrInternal> {
+ let ((funding_msg, monitor), mut chan) = {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.temporary_channel_id.clone()) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
}
(try_chan_entry!(self, chan.get_mut().funding_created(msg, &self.logger), channel_state, chan), chan.remove())
}
};
// Because we have exclusive ownership of the channel here we can release the channel_state
- // lock before add_monitor
- if let Err(e) = self.monitor.add_monitor(monitor_update.get_funding_txo().0, monitor_update) {
+ // lock before watch_channel
+ if let Err(e) = self.chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor) {
match e {
ChannelMonitorUpdateErr::PermanentFailure => {
// Note that we reply with the new channel_id in error messages if we gave up on the
// channel, not the temporary_channel_id. This is compatible with ourselves, but the
// spec is somewhat ambiguous here. Not a huge deal since we'll send error messages for
// any messages referencing a previously-closed channel anyway.
- return Err(MsgHandleErrInternal::from_finish_shutdown("ChannelMonitor storage failure".to_owned(), funding_msg.channel_id, chan.force_shutdown(true), None));
+ // We do not do a force-close here as that would generate a monitor update for
+ // a monitor that we didn't manage to store (and that we don't care about - we
+ // don't respond with the funding_signed so the channel can never go on chain).
+ let (_funding_txo_option, _monitor_update, failed_htlcs) = chan.force_shutdown(true);
+ assert!(failed_htlcs.is_empty());
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("ChannelMonitor storage failure".to_owned(), funding_msg.channel_id));
},
ChannelMonitorUpdateErr::TemporaryFailure => {
// There's no problem signing a counterparty's funding transaction if our monitor
},
hash_map::Entry::Vacant(e) => {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendFundingSigned {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg: funding_msg,
});
e.insert(chan);
Ok(())
}
- fn internal_funding_signed(&self, their_node_id: &PublicKey, msg: &msgs::FundingSigned) -> Result<(), MsgHandleErrInternal> {
+ fn internal_funding_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingSigned) -> Result<(), MsgHandleErrInternal> {
let (funding_txo, user_id) = {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
let monitor = match chan.get_mut().funding_signed(&msg, &self.logger) {
Ok(update) => update,
Err(e) => try_chan_entry!(self, Err(e), channel_state, chan),
};
- if let Err(e) = self.monitor.add_monitor(chan.get().get_funding_txo().unwrap(), monitor) {
+ if let Err(e) = self.chain_monitor.watch_channel(chan.get().get_funding_txo().unwrap(), monitor) {
return_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, false, false);
}
(chan.get().get_funding_txo().unwrap(), chan.get().get_user_id())
};
let mut pending_events = self.pending_events.lock().unwrap();
pending_events.push(events::Event::FundingBroadcastSafe {
- funding_txo: funding_txo,
+ funding_txo,
user_channel_id: user_id,
});
Ok(())
}
- fn internal_funding_locked(&self, their_node_id: &PublicKey, msg: &msgs::FundingLocked) -> Result<(), MsgHandleErrInternal> {
+ fn internal_funding_locked(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingLocked) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
try_chan_entry!(self, chan.get_mut().funding_locked(&msg), channel_state, chan);
// failures is an issue. Note, to achieve its goal, only one of the announcement_sigs needs
// to be received, from then sigs are going to be flood to the whole network.
channel_state.pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg: announcement_sigs,
});
}
}
}
- fn internal_shutdown(&self, their_node_id: &PublicKey, msg: &msgs::Shutdown) -> Result<(), MsgHandleErrInternal> {
+ fn internal_shutdown(&self, counterparty_node_id: &PublicKey, their_features: &InitFeatures, msg: &msgs::Shutdown) -> Result<(), MsgHandleErrInternal> {
let (mut dropped_htlcs, chan_option) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id.clone()) {
hash_map::Entry::Occupied(mut chan_entry) => {
- if chan_entry.get().get_their_node_id() != *their_node_id {
+ if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- let (shutdown, closing_signed, dropped_htlcs) = try_chan_entry!(self, chan_entry.get_mut().shutdown(&self.fee_estimator, &msg), channel_state, chan_entry);
+ let (shutdown, closing_signed, dropped_htlcs) = try_chan_entry!(self, chan_entry.get_mut().shutdown(&self.fee_estimator, &their_features, &msg), channel_state, chan_entry);
if let Some(msg) = shutdown {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg,
});
}
if let Some(msg) = closing_signed {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg,
});
}
Ok(())
}
- fn internal_closing_signed(&self, their_node_id: &PublicKey, msg: &msgs::ClosingSigned) -> Result<(), MsgHandleErrInternal> {
+ fn internal_closing_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::ClosingSigned) -> Result<(), MsgHandleErrInternal> {
let (tx, chan_option) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id.clone()) {
hash_map::Entry::Occupied(mut chan_entry) => {
- if chan_entry.get().get_their_node_id() != *their_node_id {
+ if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
let (closing_signed, tx) = try_chan_entry!(self, chan_entry.get_mut().closing_signed(&self.fee_estimator, &msg), channel_state, chan_entry);
if let Some(msg) = closing_signed {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg,
});
}
Ok(())
}
- fn internal_update_add_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) -> Result<(), MsgHandleErrInternal> {
+ fn internal_update_add_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) -> Result<(), MsgHandleErrInternal> {
//TODO: BOLT 4 points out a specific attack where a peer may re-send an onion packet and
//determine the state of the payment based on our response/if we forward anything/the time
//we take to respond. We should take care to avoid allowing such an attack.
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- let create_pending_htlc_status = |chan: &Channel<ChanSigner>, pending_forward_info: PendingHTLCStatus, error_code: u16| {
+ let create_pending_htlc_status = |chan: &Channel<Signer>, pending_forward_info: PendingHTLCStatus, error_code: u16| {
// Ensure error_code has the UPDATE flag set, since by default we send a
// channel update along as part of failing the HTLC.
assert!((error_code & 0x1000) != 0);
Ok(())
}
- fn internal_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), MsgHandleErrInternal> {
+ fn internal_update_fulfill_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), MsgHandleErrInternal> {
let mut channel_lock = self.channel_state.lock().unwrap();
let htlc_source = {
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
try_chan_entry!(self, chan.get_mut().update_fulfill_htlc(&msg), channel_state, chan)
Ok(())
}
- fn internal_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<(), MsgHandleErrInternal> {
+ fn internal_update_fail_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<(), MsgHandleErrInternal> {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
try_chan_entry!(self, chan.get_mut().update_fail_htlc(&msg, HTLCFailReason::LightningError { err: msg.reason.clone() }), channel_state, chan);
Ok(())
}
- fn internal_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), MsgHandleErrInternal> {
+ fn internal_update_fail_malformed_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), MsgHandleErrInternal> {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
if (msg.failure_code & 0x8000) == 0 {
}
}
- fn internal_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<(), MsgHandleErrInternal> {
+ fn internal_commitment_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
let (revoke_and_ack, commitment_signed, closing_signed, monitor_update) =
Err((None, e)) => try_chan_entry!(self, Err(e), channel_state, chan),
Err((Some(update), e)) => {
assert!(chan.get().is_awaiting_monitor_update());
- let _ = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), update);
+ let _ = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), update);
try_chan_entry!(self, Err(e), channel_state, chan);
unreachable!();
},
Ok(res) => res
};
- if let Err(e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
return_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, true, commitment_signed.is_some());
//TODO: Rebroadcast closing_signed if present on monitor update restoration
}
channel_state.pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg: revoke_and_ack,
});
if let Some(msg) = commitment_signed {
channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
updates: msgs::CommitmentUpdate {
update_add_htlcs: Vec::new(),
update_fulfill_htlcs: Vec::new(),
}
if let Some(msg) = closing_signed {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg,
});
}
}
#[inline]
- fn forward_htlcs(&self, per_source_pending_forwards: &mut [(u64, Vec<(PendingHTLCInfo, u64)>)]) {
- for &mut (prev_short_channel_id, ref mut pending_forwards) in per_source_pending_forwards {
+ fn forward_htlcs(&self, per_source_pending_forwards: &mut [(u64, OutPoint, Vec<(PendingHTLCInfo, u64)>)]) {
+ for &mut (prev_short_channel_id, prev_funding_outpoint, ref mut pending_forwards) in per_source_pending_forwards {
let mut forward_event = None;
if !pending_forwards.is_empty() {
let mut channel_state = self.channel_state.lock().unwrap();
PendingHTLCRouting::Receive { .. } => 0,
}) {
hash_map::Entry::Occupied(mut entry) => {
- entry.get_mut().push(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info });
+ entry.get_mut().push(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_funding_outpoint,
+ prev_htlc_id, forward_info });
},
hash_map::Entry::Vacant(entry) => {
- entry.insert(vec!(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info }));
+ entry.insert(vec!(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_funding_outpoint,
+ prev_htlc_id, forward_info }));
}
}
}
}
}
- fn internal_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result<(), MsgHandleErrInternal> {
+ fn internal_revoke_and_ack(&self, counterparty_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result<(), MsgHandleErrInternal> {
let mut htlcs_to_fail = Vec::new();
let res = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
break Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
let was_frozen_for_monitor = chan.get().is_awaiting_monitor_update();
let (commitment_update, pending_forwards, pending_failures, closing_signed, monitor_update, htlcs_to_fail_in) =
break_chan_entry!(self, chan.get_mut().revoke_and_ack(&msg, &self.fee_estimator, &self.logger), channel_state, chan);
htlcs_to_fail = htlcs_to_fail_in;
- if let Err(e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
if was_frozen_for_monitor {
assert!(commitment_update.is_none() && closing_signed.is_none() && pending_forwards.is_empty() && pending_failures.is_empty());
break Err(MsgHandleErrInternal::ignore_no_close("Previous monitor update failure prevented responses to RAA".to_owned()));
}
if let Some(updates) = commitment_update {
channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
updates,
});
}
if let Some(msg) = closing_signed {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg,
});
}
- break Ok((pending_forwards, pending_failures, chan.get().get_short_channel_id().expect("RAA should only work on a short-id-available channel")))
+ break Ok((pending_forwards, pending_failures, chan.get().get_short_channel_id().expect("RAA should only work on a short-id-available channel"), chan.get().get_funding_txo().unwrap()))
},
hash_map::Entry::Vacant(_) => break Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
}
};
self.fail_holding_cell_htlcs(htlcs_to_fail, msg.channel_id);
match res {
- Ok((pending_forwards, mut pending_failures, short_channel_id)) => {
+ Ok((pending_forwards, mut pending_failures, short_channel_id, channel_outpoint)) => {
for failure in pending_failures.drain(..) {
self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), failure.0, &failure.1, failure.2);
}
- self.forward_htlcs(&mut [(short_channel_id, pending_forwards)]);
+ self.forward_htlcs(&mut [(short_channel_id, channel_outpoint, pending_forwards)]);
Ok(())
},
Err(e) => Err(e)
}
}
- fn internal_update_fee(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), MsgHandleErrInternal> {
+ fn internal_update_fee(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), MsgHandleErrInternal> {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
try_chan_entry!(self, chan.get_mut().update_fee(&self.fee_estimator, &msg), channel_state, chan);
Ok(())
}
- fn internal_announcement_signatures(&self, their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) -> Result<(), MsgHandleErrInternal> {
+ fn internal_announcement_signatures(&self, counterparty_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
if !chan.get().is_usable() {
Ok(())
}
- fn internal_channel_reestablish(&self, their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) -> Result<(), MsgHandleErrInternal> {
+ fn internal_channel_reestablish(&self, counterparty_node_id: &PublicKey, msg: &msgs::ChannelReestablish) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_their_node_id() != *their_node_id {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
// Currently, we expect all holding cell update_adds to be dropped on peer
let (funding_locked, revoke_and_ack, commitment_update, monitor_update_opt, mut order, shutdown) =
try_chan_entry!(self, chan.get_mut().channel_reestablish(msg, &self.logger), channel_state, chan);
if let Some(monitor_update) = monitor_update_opt {
- if let Err(e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
// channel_reestablish doesn't guarantee the order it returns is sensical
// for the messages it returns, but if we're setting what messages to
// re-transmit on monitor update success, we need to make sure it is sane.
}
if let Some(msg) = funding_locked {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendFundingLocked {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg
});
}
macro_rules! send_raa { () => {
if let Some(msg) = revoke_and_ack {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg
});
}
macro_rules! send_cu { () => {
if let Some(updates) = commitment_update {
channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
updates
});
}
}
if let Some(msg) = shutdown {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: their_node_id.clone(),
+ node_id: counterparty_node_id.clone(),
msg,
});
}
/// If successful, will generate a UpdateHTLCs event, so you should probably poll
/// PeerManager::process_events afterwards.
/// Note: This API is likely to change!
+ /// (C-not exported) Cause its doc(hidden) anyway
#[doc(hidden)]
pub fn update_fee(&self, channel_id: [u8;32], feerate_per_kw: u32) -> Result<(), APIError> {
- let _ = self.total_consistency_lock.read().unwrap();
- let their_node_id;
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let counterparty_node_id;
let err: Result<(), _> = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
if !chan.get().is_live() {
return Err(APIError::ChannelUnavailable{err: "Channel is either not yet fully established or peer is currently disconnected".to_owned()});
}
- their_node_id = chan.get().get_their_node_id();
+ counterparty_node_id = chan.get().get_counterparty_node_id();
if let Some((update_fee, commitment_signed, monitor_update)) =
break_chan_entry!(self, chan.get_mut().send_update_fee_and_commit(feerate_per_kw, &self.logger), channel_state, chan)
{
- if let Err(_e) = self.monitor.update_monitor(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ if let Err(_e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
unimplemented!();
}
channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_their_node_id(),
+ node_id: chan.get().get_counterparty_node_id(),
updates: msgs::CommitmentUpdate {
update_add_htlcs: Vec::new(),
update_fulfill_htlcs: Vec::new(),
return Ok(())
};
- match handle_error!(self, err, their_node_id) {
+ match handle_error!(self, err, counterparty_node_id) {
Ok(_) => unreachable!(),
Err(e) => { Err(APIError::APIMisuseError { err: e.err })}
}
}
+
+ /// Process pending events from the `chain::Watch`.
+ fn process_pending_monitor_events(&self) {
+ let mut failed_channels = Vec::new();
+ {
+ for monitor_event in self.chain_monitor.release_pending_monitor_events() {
+ match monitor_event {
+ MonitorEvent::HTLCEvent(htlc_update) => {
+ if let Some(preimage) = htlc_update.payment_preimage {
+ log_trace!(self.logger, "Claiming HTLC with preimage {} from our monitor", log_bytes!(preimage.0));
+ self.claim_funds_internal(self.channel_state.lock().unwrap(), htlc_update.source, preimage);
+ } else {
+ log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ }
+ },
+ MonitorEvent::CommitmentTxBroadcasted(funding_outpoint) => {
+ let mut channel_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_lock;
+ let by_id = &mut channel_state.by_id;
+ let short_to_id = &mut channel_state.short_to_id;
+ let pending_msg_events = &mut channel_state.pending_msg_events;
+ if let Some(mut chan) = by_id.remove(&funding_outpoint.to_channel_id()) {
+ if let Some(short_id) = chan.get_short_channel_id() {
+ short_to_id.remove(&short_id);
+ }
+ failed_channels.push(chan.force_shutdown(false));
+ if let Ok(update) = self.get_channel_update(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ }
+ },
+ }
+ }
+ }
+
+ for failure in failed_channels.drain(..) {
+ self.finish_force_close_channel(failure);
+ }
+ }
}
-impl<ChanSigner: ChannelKeys, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> events::MessageSendEventsProvider for ChannelManager<ChanSigner, M, T, K, F, L>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> MessageSendEventsProvider for ChannelManager<Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
- fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
- // TODO: Event release to users and serialization is currently race-y: it's very easy for a
- // user to serialize a ChannelManager with pending events in it and lose those events on
- // restart. This is doubly true for the fail/fulfill-backs from monitor events!
- {
- //TODO: This behavior should be documented.
- for htlc_update in self.monitor.get_and_clear_pending_htlcs_updated() {
- if let Some(preimage) = htlc_update.payment_preimage {
- log_trace!(self.logger, "Claiming HTLC with preimage {} from our monitor", log_bytes!(preimage.0));
- self.claim_funds_internal(self.channel_state.lock().unwrap(), htlc_update.source, preimage);
- } else {
- log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
- }
- }
- }
+ fn get_and_clear_pending_msg_events(&self) -> Vec<MessageSendEvent> {
+ //TODO: This behavior should be documented. It's non-intuitive that we query
+ // ChannelMonitors when clearing other events.
+ self.process_pending_monitor_events();
let mut ret = Vec::new();
let mut channel_state = self.channel_state.lock().unwrap();
}
}
-impl<ChanSigner: ChannelKeys, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> events::EventsProvider for ChannelManager<ChanSigner, M, T, K, F, L>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> EventsProvider for ChannelManager<Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
- fn get_and_clear_pending_events(&self) -> Vec<events::Event> {
- // TODO: Event release to users and serialization is currently race-y: it's very easy for a
- // user to serialize a ChannelManager with pending events in it and lose those events on
- // restart. This is doubly true for the fail/fulfill-backs from monitor events!
- {
- //TODO: This behavior should be documented.
- for htlc_update in self.monitor.get_and_clear_pending_htlcs_updated() {
- if let Some(preimage) = htlc_update.payment_preimage {
- log_trace!(self.logger, "Claiming HTLC with preimage {} from our monitor", log_bytes!(preimage.0));
- self.claim_funds_internal(self.channel_state.lock().unwrap(), htlc_update.source, preimage);
- } else {
- log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
- }
- }
- }
+ fn get_and_clear_pending_events(&self) -> Vec<Event> {
+ //TODO: This behavior should be documented. It's non-intuitive that we query
+ // ChannelMonitors when clearing other events.
+ self.process_pending_monitor_events();
let mut ret = Vec::new();
let mut pending_events = self.pending_events.lock().unwrap();
}
}
-impl<ChanSigner: ChannelKeys, M: Deref + Sync + Send, T: Deref + Sync + Send, K: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send>
- ChainListener for ChannelManager<ChanSigner, M, T, K, F, L>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> chain::Listen for ChannelManager<Signer, M, T, K, F, L>
+where
+ M::Target: chain::Watch<Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface<Signer = Signer>,
+ F::Target: FeeEstimator,
+ L::Target: Logger,
+{
+ fn block_connected(&self, block: &Block, height: u32) {
+ let txdata: Vec<_> = block.txdata.iter().enumerate().collect();
+ ChannelManager::block_connected(self, &block.header, &txdata, height);
+ }
+
+ fn block_disconnected(&self, header: &BlockHeader, _height: u32) {
+ ChannelManager::block_disconnected(self, header);
+ }
+}
+
+impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
- L::Target: Logger,
+ L::Target: Logger,
{
- fn block_connected(&self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[usize]) {
- let header_hash = header.bitcoin_hash();
- log_trace!(self.logger, "Block {} at height {} connected with {} txn matched", header_hash, height, txn_matched.len());
- let _ = self.total_consistency_lock.read().unwrap();
+ /// Updates channel state based on transactions seen in a connected block.
+ pub fn block_connected(&self, header: &BlockHeader, txdata: &TransactionData, height: u32) {
+ let header_hash = header.block_hash();
+ log_trace!(self.logger, "Block {} at height {} connected", header_hash, height);
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut failed_channels = Vec::new();
let mut timed_out_htlcs = Vec::new();
{
let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
channel_state.by_id.retain(|_, channel| {
- let res = channel.block_connected(header, height, txn_matched, indexes_of_txn_matched);
+ let res = channel.block_connected(header, txdata, height);
if let Ok((chan_res, mut timed_out_pending_htlcs)) = res {
for (source, payment_hash) in timed_out_pending_htlcs.drain(..) {
let chan_update = self.get_channel_update(&channel).map(|u| u.encode_with_len()).unwrap(); // Cannot add/recv HTLCs before we have a short_id so unwrap is safe
}
if let Some(funding_locked) = chan_res {
pending_msg_events.push(events::MessageSendEvent::SendFundingLocked {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
msg: funding_locked,
});
if let Some(announcement_sigs) = self.get_announcement_sigs(channel) {
log_trace!(self.logger, "Sending funding_locked and announcement_signatures for {}", log_bytes!(channel.channel_id()));
pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
msg: announcement_sigs,
});
} else {
}
} else if let Err(e) = res {
pending_msg_events.push(events::MessageSendEvent::HandleError {
- node_id: channel.get_their_node_id(),
+ node_id: channel.get_counterparty_node_id(),
action: msgs::ErrorAction::SendErrorMessage { msg: e },
});
return false;
}
if let Some(funding_txo) = channel.get_funding_txo() {
- for tx in txn_matched {
+ for &(_, tx) in txdata.iter() {
for inp in tx.input.iter() {
if inp.previous_output == funding_txo.into_bitcoin_outpoint() {
log_trace!(self.logger, "Detected channel-closing tx {} spending {}:{}, closing channel {}", tx.txid(), inp.previous_output.txid, inp.previous_output.vout, log_bytes!(channel.channel_id()));
}
}
}
- if channel.is_funding_initiated() && channel.channel_monitor().would_broadcast_at_height(height, &self.logger) {
- if let Some(short_id) = channel.get_short_channel_id() {
- short_to_id.remove(&short_id);
- }
- // If would_broadcast_at_height() is true, the channel_monitor will broadcast
- // the latest local tx for us, so we should skip that here (it doesn't really
- // hurt anything, but does make tests a bit simpler).
- failed_channels.push(channel.force_shutdown(false));
- if let Ok(update) = self.get_channel_update(&channel) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
- return false;
- }
true
});
}
}
- /// We force-close the channel without letting our counterparty participate in the shutdown
- fn block_disconnected(&self, header: &BlockHeader, _: u32) {
- let _ = self.total_consistency_lock.read().unwrap();
+ /// Updates channel state based on a disconnected block.
+ ///
+ /// If necessary, the channel may be force-closed without letting the counterparty participate
+ /// in the shutdown.
+ pub fn block_disconnected(&self, header: &BlockHeader) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut failed_channels = Vec::new();
{
let mut channel_lock = self.channel_state.lock().unwrap();
self.finish_force_close_channel(failure);
}
self.latest_block_height.fetch_sub(1, Ordering::AcqRel);
- *self.last_block_hash.try_lock().expect("block_(dis)connected must not be called in parallel") = header.bitcoin_hash();
+ *self.last_block_hash.try_lock().expect("block_(dis)connected must not be called in parallel") = header.block_hash();
+ }
+
+ /// Blocks until ChannelManager needs to be persisted or a timeout is reached. It returns a bool
+ /// indicating whether persistence is necessary. Only one listener on `wait_timeout` is
+ /// guaranteed to be woken up.
+ /// Note that the feature `allow_wallclock_use` must be enabled to use this function.
+ #[cfg(any(test, feature = "allow_wallclock_use"))]
+ pub fn wait_timeout(&self, max_wait: Duration) -> bool {
+ self.persistence_notifier.wait_timeout(max_wait)
+ }
+
+ /// Blocks until ChannelManager needs to be persisted. Only one listener on `wait` is
+ /// guaranteed to be woken up.
+ pub fn wait(&self) {
+ self.persistence_notifier.wait()
+ }
+
+ #[cfg(any(test, feature = "_test_utils"))]
+ pub fn get_persistence_condvar_value(&self) -> bool {
+ let mutcond = &self.persistence_notifier.persistence_lock;
+ let &(ref mtx, _) = mutcond;
+ let guard = mtx.lock().unwrap();
+ *guard
}
}
-impl<ChanSigner: ChannelKeys, M: Deref + Sync + Send, T: Deref + Sync + Send, K: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send>
- ChannelMessageHandler for ChannelManager<ChanSigner, M, T, K, F, L>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<Signer: Sign, M: Deref + Sync + Send, T: Deref + Sync + Send, K: Deref + Sync + Send, F: Deref + Sync + Send, L: Deref + Sync + Send>
+ ChannelMessageHandler for ChannelManager<Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
- fn handle_open_channel(&self, their_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::OpenChannel) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_open_channel(their_node_id, their_features, msg), *their_node_id);
+ fn handle_open_channel(&self, counterparty_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::OpenChannel) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_open_channel(counterparty_node_id, their_features, msg), *counterparty_node_id);
}
- fn handle_accept_channel(&self, their_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::AcceptChannel) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_accept_channel(their_node_id, their_features, msg), *their_node_id);
+ fn handle_accept_channel(&self, counterparty_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::AcceptChannel) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_accept_channel(counterparty_node_id, their_features, msg), *counterparty_node_id);
}
- fn handle_funding_created(&self, their_node_id: &PublicKey, msg: &msgs::FundingCreated) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_funding_created(their_node_id, msg), *their_node_id);
+ fn handle_funding_created(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingCreated) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_funding_created(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_funding_signed(&self, their_node_id: &PublicKey, msg: &msgs::FundingSigned) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_funding_signed(their_node_id, msg), *their_node_id);
+ fn handle_funding_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingSigned) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_funding_signed(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_funding_locked(&self, their_node_id: &PublicKey, msg: &msgs::FundingLocked) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_funding_locked(their_node_id, msg), *their_node_id);
+ fn handle_funding_locked(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingLocked) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_funding_locked(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_shutdown(&self, their_node_id: &PublicKey, msg: &msgs::Shutdown) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_shutdown(their_node_id, msg), *their_node_id);
+ fn handle_shutdown(&self, counterparty_node_id: &PublicKey, their_features: &InitFeatures, msg: &msgs::Shutdown) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_shutdown(counterparty_node_id, their_features, msg), *counterparty_node_id);
}
- fn handle_closing_signed(&self, their_node_id: &PublicKey, msg: &msgs::ClosingSigned) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_closing_signed(their_node_id, msg), *their_node_id);
+ fn handle_closing_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::ClosingSigned) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_closing_signed(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_update_add_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_update_add_htlc(their_node_id, msg), *their_node_id);
+ fn handle_update_add_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_update_add_htlc(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_update_fulfill_htlc(their_node_id, msg), *their_node_id);
+ fn handle_update_fulfill_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_update_fulfill_htlc(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_update_fail_htlc(their_node_id, msg), *their_node_id);
+ fn handle_update_fail_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_update_fail_htlc(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_update_fail_malformed_htlc(their_node_id, msg), *their_node_id);
+ fn handle_update_fail_malformed_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_update_fail_malformed_htlc(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_commitment_signed(their_node_id, msg), *their_node_id);
+ fn handle_commitment_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::CommitmentSigned) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_commitment_signed(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_revoke_and_ack(their_node_id, msg), *their_node_id);
+ fn handle_revoke_and_ack(&self, counterparty_node_id: &PublicKey, msg: &msgs::RevokeAndACK) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_revoke_and_ack(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_update_fee(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFee) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_update_fee(their_node_id, msg), *their_node_id);
+ fn handle_update_fee(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFee) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_update_fee(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_announcement_signatures(&self, their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_announcement_signatures(their_node_id, msg), *their_node_id);
+ fn handle_announcement_signatures(&self, counterparty_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_announcement_signatures(counterparty_node_id, msg), *counterparty_node_id);
}
- fn handle_channel_reestablish(&self, their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) {
- let _ = self.total_consistency_lock.read().unwrap();
- let _ = handle_error!(self, self.internal_channel_reestablish(their_node_id, msg), *their_node_id);
+ fn handle_channel_reestablish(&self, counterparty_node_id: &PublicKey, msg: &msgs::ChannelReestablish) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
+ let _ = handle_error!(self, self.internal_channel_reestablish(counterparty_node_id, msg), *counterparty_node_id);
}
- fn peer_disconnected(&self, their_node_id: &PublicKey, no_connection_possible: bool) {
- let _ = self.total_consistency_lock.read().unwrap();
+ fn peer_disconnected(&self, counterparty_node_id: &PublicKey, no_connection_possible: bool) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
let mut failed_channels = Vec::new();
let mut failed_payments = Vec::new();
let mut no_channels_remain = true;
let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
if no_connection_possible {
- log_debug!(self.logger, "Failing all channels with {} due to no_connection_possible", log_pubkey!(their_node_id));
+ log_debug!(self.logger, "Failing all channels with {} due to no_connection_possible", log_pubkey!(counterparty_node_id));
channel_state.by_id.retain(|_, chan| {
- if chan.get_their_node_id() == *their_node_id {
+ if chan.get_counterparty_node_id() == *counterparty_node_id {
if let Some(short_id) = chan.get_short_channel_id() {
short_to_id.remove(&short_id);
}
}
});
} else {
- log_debug!(self.logger, "Marking channels with {} disconnected and generating channel_updates", log_pubkey!(their_node_id));
+ log_debug!(self.logger, "Marking channels with {} disconnected and generating channel_updates", log_pubkey!(counterparty_node_id));
channel_state.by_id.retain(|_, chan| {
- if chan.get_their_node_id() == *their_node_id {
+ if chan.get_counterparty_node_id() == *counterparty_node_id {
// Note that currently on channel reestablish we assert that there are no
// holding cell add-HTLCs, so if in the future we stop removing uncommitted HTLCs
// on peer disconnect here, there will need to be corresponding changes in
}
pending_msg_events.retain(|msg| {
match msg {
- &events::MessageSendEvent::SendAcceptChannel { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendOpenChannel { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendFundingCreated { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendFundingSigned { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendFundingLocked { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendAnnouncementSignatures { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendClosingSigned { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendShutdown { ref node_id, .. } => node_id != their_node_id,
- &events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => node_id != their_node_id,
+ &events::MessageSendEvent::SendAcceptChannel { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendOpenChannel { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendFundingCreated { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendFundingSigned { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendFundingLocked { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendAnnouncementSignatures { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendClosingSigned { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendShutdown { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::BroadcastChannelAnnouncement { .. } => true,
&events::MessageSendEvent::BroadcastNodeAnnouncement { .. } => true,
&events::MessageSendEvent::BroadcastChannelUpdate { .. } => true,
- &events::MessageSendEvent::HandleError { ref node_id, .. } => node_id != their_node_id,
+ &events::MessageSendEvent::HandleError { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => true,
+ &events::MessageSendEvent::SendChannelRangeQuery { .. } => false,
+ &events::MessageSendEvent::SendShortIdsQuery { .. } => false,
}
});
}
if no_channels_remain {
- self.per_peer_state.write().unwrap().remove(their_node_id);
+ self.per_peer_state.write().unwrap().remove(counterparty_node_id);
}
for failure in failed_channels.drain(..) {
}
}
- fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &msgs::Init) {
- log_debug!(self.logger, "Generating channel_reestablish events for {}", log_pubkey!(their_node_id));
+ fn peer_connected(&self, counterparty_node_id: &PublicKey, init_msg: &msgs::Init) {
+ log_debug!(self.logger, "Generating channel_reestablish events for {}", log_pubkey!(counterparty_node_id));
- let _ = self.total_consistency_lock.read().unwrap();
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
{
let mut peer_state_lock = self.per_peer_state.write().unwrap();
- match peer_state_lock.entry(their_node_id.clone()) {
+ match peer_state_lock.entry(counterparty_node_id.clone()) {
hash_map::Entry::Vacant(e) => {
e.insert(Mutex::new(PeerState {
latest_features: init_msg.features.clone(),
let channel_state = &mut *channel_state_lock;
let pending_msg_events = &mut channel_state.pending_msg_events;
channel_state.by_id.retain(|_, chan| {
- if chan.get_their_node_id() == *their_node_id {
+ if chan.get_counterparty_node_id() == *counterparty_node_id {
if !chan.have_received_message() {
// If we created this (outbound) channel while we were disconnected from the
// peer we probably failed to send the open_channel message, which is now
false
} else {
pending_msg_events.push(events::MessageSendEvent::SendChannelReestablish {
- node_id: chan.get_their_node_id(),
+ node_id: chan.get_counterparty_node_id(),
msg: chan.get_channel_reestablish(&self.logger),
});
true
//TODO: Also re-broadcast announcement_signatures
}
- fn handle_error(&self, their_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
- let _ = self.total_consistency_lock.read().unwrap();
+ fn handle_error(&self, counterparty_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
+ let _persistence_guard = PersistenceNotifierGuard::new(&self.total_consistency_lock, &self.persistence_notifier);
if msg.channel_id == [0; 32] {
for chan in self.list_channels() {
- if chan.remote_network_id == *their_node_id {
- self.force_close_channel(&chan.channel_id);
+ if chan.remote_network_id == *counterparty_node_id {
+ // Untrusted messages from peer, we throw away the error if id points to a non-existent channel
+ let _ = self.force_close_channel_with_peer(&chan.channel_id, Some(counterparty_node_id));
}
}
} else {
- self.force_close_channel(&msg.channel_id);
+ // Untrusted messages from peer, we throw away the error if id points to a non-existent channel
+ let _ = self.force_close_channel_with_peer(&msg.channel_id, Some(counterparty_node_id));
}
}
}
+/// Used to signal to the ChannelManager persister that the manager needs to be re-persisted to
+/// disk/backups, through `wait_timeout` and `wait`.
+struct PersistenceNotifier {
+ /// Users won't access the persistence_lock directly, but rather wait on its bool using
+ /// `wait_timeout` and `wait`.
+ persistence_lock: (Mutex<bool>, Condvar),
+}
+
+impl PersistenceNotifier {
+ fn new() -> Self {
+ Self {
+ persistence_lock: (Mutex::new(false), Condvar::new()),
+ }
+ }
+
+ fn wait(&self) {
+ loop {
+ let &(ref mtx, ref cvar) = &self.persistence_lock;
+ let mut guard = mtx.lock().unwrap();
+ guard = cvar.wait(guard).unwrap();
+ let result = *guard;
+ if result {
+ *guard = false;
+ return
+ }
+ }
+ }
+
+ #[cfg(any(test, feature = "allow_wallclock_use"))]
+ fn wait_timeout(&self, max_wait: Duration) -> bool {
+ let current_time = Instant::now();
+ loop {
+ let &(ref mtx, ref cvar) = &self.persistence_lock;
+ let mut guard = mtx.lock().unwrap();
+ guard = cvar.wait_timeout(guard, max_wait).unwrap().0;
+ // Due to spurious wakeups that can happen on `wait_timeout`, here we need to check if the
+ // desired wait time has actually passed, and if not then restart the loop with a reduced wait
+ // time. Note that this logic can be highly simplified through the use of
+ // `Condvar::wait_while` and `Condvar::wait_timeout_while`, if and when our MSRV is raised to
+ // 1.42.0.
+ let elapsed = current_time.elapsed();
+ let result = *guard;
+ if result || elapsed >= max_wait {
+ *guard = false;
+ return result;
+ }
+ match max_wait.checked_sub(elapsed) {
+ None => return result,
+ Some(_) => continue
+ }
+ }
+ }
+
+ // Signal to the ChannelManager persister that there are updates necessitating persisting to disk.
+ fn notify(&self) {
+ let &(ref persist_mtx, ref cnd) = &self.persistence_lock;
+ let mut persistence_lock = persist_mtx.lock().unwrap();
+ *persistence_lock = true;
+ mem::drop(persistence_lock);
+ cnd.notify_all();
+ }
+}
+
const SERIALIZATION_VERSION: u8 = 1;
const MIN_SERIALIZATION_VERSION: u8 = 1;
impl_writeable!(HTLCPreviousHopData, 0, {
short_channel_id,
+ outpoint,
htlc_id,
incoming_packet_shared_secret
});
impl Writeable for HTLCForwardInfo {
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
match self {
- &HTLCForwardInfo::AddHTLC { ref prev_short_channel_id, ref prev_htlc_id, ref forward_info } => {
+ &HTLCForwardInfo::AddHTLC { ref prev_short_channel_id, ref prev_funding_outpoint, ref prev_htlc_id, ref forward_info } => {
0u8.write(writer)?;
prev_short_channel_id.write(writer)?;
+ prev_funding_outpoint.write(writer)?;
prev_htlc_id.write(writer)?;
forward_info.write(writer)?;
},
match <u8 as Readable>::read(reader)? {
0 => Ok(HTLCForwardInfo::AddHTLC {
prev_short_channel_id: Readable::read(reader)?,
+ prev_funding_outpoint: Readable::read(reader)?,
prev_htlc_id: Readable::read(reader)?,
forward_info: Readable::read(reader)?,
}),
}
}
-impl<ChanSigner: ChannelKeys + Writeable, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> Writeable for ChannelManager<ChanSigner, M, T, K, F, L>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> Writeable for ChannelManager<Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
- let _ = self.total_consistency_lock.write().unwrap();
+ let _consistency_lock = self.total_consistency_lock.write().unwrap();
writer.write_all(&[SERIALIZATION_VERSION; 1])?;
writer.write_all(&[MIN_SERIALIZATION_VERSION; 1])?;
/// This may result in closing some Channels if the ChannelMonitor is newer than the stored
/// ChannelManager state to ensure no loss of funds. Thus, transactions may be broadcasted.
/// 3) Register all relevant ChannelMonitor outpoints with your chain watch mechanism using
-/// ChannelMonitor::get_monitored_outpoints and ChannelMonitor::get_funding_txo().
+/// ChannelMonitor::get_outputs_to_watch() and ChannelMonitor::get_funding_txo().
/// 4) Reconnect blocks on your ChannelMonitors.
-/// 5) Move the ChannelMonitors into your local ManyChannelMonitor.
+/// 5) Move the ChannelMonitors into your local chain::Watch.
/// 6) Disconnect/connect blocks on the ChannelManager.
-/// 7) Register the new ChannelManager with your ChainWatchInterface.
-pub struct ChannelManagerReadArgs<'a, ChanSigner: 'a + ChannelKeys, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+pub struct ChannelManagerReadArgs<'a, Signer: 'a + Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
-
/// The keys provider which will give us relevant keys. Some keys will be loaded during
- /// deserialization.
+ /// deserialization and KeysInterface::read_chan_signer will be used to read per-Channel
+ /// signing data.
pub keys_manager: K,
/// The fee_estimator for use in the ChannelManager in the future.
///
/// No calls to the FeeEstimator will be made during deserialization.
pub fee_estimator: F,
- /// The ManyChannelMonitor for use in the ChannelManager in the future.
+ /// The chain::Watch for use in the ChannelManager in the future.
///
- /// No calls to the ManyChannelMonitor will be made during deserialization. It is assumed that
+ /// No calls to the chain::Watch will be made during deserialization. It is assumed that
/// you have deserialized ChannelMonitors separately and will add them to your
- /// ManyChannelMonitor after deserializing this ChannelManager.
- pub monitor: M,
+ /// chain::Watch after deserializing this ChannelManager.
+ pub chain_monitor: M,
/// The BroadcasterInterface which will be used in the ChannelManager in the future and may be
/// used to broadcast the latest local commitment transactions of channels which must be
///
/// In such cases the latest local transactions will be sent to the tx_broadcaster included in
/// this struct.
- pub channel_monitors: &'a mut HashMap<OutPoint, &'a mut ChannelMonitor<ChanSigner>>,
+ ///
+ /// (C-not exported) because we have no HashMap bindings
+ pub channel_monitors: HashMap<OutPoint, &'a mut ChannelMonitor<Signer>>,
+}
+
+impl<'a, Signer: 'a + Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
+ ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>
+ where M::Target: chain::Watch<Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface<Signer = Signer>,
+ F::Target: FeeEstimator,
+ L::Target: Logger,
+ {
+ /// Simple utility function to create a ChannelManagerReadArgs which creates the monitor
+ /// HashMap for you. This is primarily useful for C bindings where it is not practical to
+ /// populate a HashMap directly from C.
+ pub fn new(keys_manager: K, fee_estimator: F, chain_monitor: M, tx_broadcaster: T, logger: L, default_config: UserConfig,
+ mut channel_monitors: Vec<&'a mut ChannelMonitor<Signer>>) -> Self {
+ Self {
+ keys_manager, fee_estimator, chain_monitor, tx_broadcaster, logger, default_config,
+ channel_monitors: channel_monitors.drain(..).map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect()
+ }
+ }
}
// Implement ReadableArgs for an Arc'd ChannelManager to make it a bit easier to work with the
// SipmleArcChannelManager type:
-impl<'a, ChanSigner: ChannelKeys + Readable, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- ReadableArgs<ChannelManagerReadArgs<'a, ChanSigner, M, T, K, F, L>> for (BlockHash, Arc<ChannelManager<ChanSigner, M, T, K, F, L>>)
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<'a, Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
+ ReadableArgs<ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>> for (BlockHash, Arc<ChannelManager<Signer, M, T, K, F, L>>)
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
- fn read<R: ::std::io::Read>(reader: &mut R, args: ChannelManagerReadArgs<'a, ChanSigner, M, T, K, F, L>) -> Result<Self, DecodeError> {
- let (blockhash, chan_manager) = <(BlockHash, ChannelManager<ChanSigner, M, T, K, F, L>)>::read(reader, args)?;
+ fn read<R: ::std::io::Read>(reader: &mut R, args: ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>) -> Result<Self, DecodeError> {
+ let (blockhash, chan_manager) = <(BlockHash, ChannelManager<Signer, M, T, K, F, L>)>::read(reader, args)?;
Ok((blockhash, Arc::new(chan_manager)))
}
}
-impl<'a, ChanSigner: ChannelKeys + Readable, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- ReadableArgs<ChannelManagerReadArgs<'a, ChanSigner, M, T, K, F, L>> for (BlockHash, ChannelManager<ChanSigner, M, T, K, F, L>)
- where M::Target: ManyChannelMonitor<Keys=ChanSigner>,
+impl<'a, Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
+ ReadableArgs<ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>> for (BlockHash, ChannelManager<Signer, M, T, K, F, L>)
+ where M::Target: chain::Watch<Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<ChanKeySigner = ChanSigner>,
+ K::Target: KeysInterface<Signer = Signer>,
F::Target: FeeEstimator,
L::Target: Logger,
{
- fn read<R: ::std::io::Read>(reader: &mut R, args: ChannelManagerReadArgs<'a, ChanSigner, M, T, K, F, L>) -> Result<Self, DecodeError> {
+ fn read<R: ::std::io::Read>(reader: &mut R, mut args: ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>) -> Result<Self, DecodeError> {
let _ver: u8 = Readable::read(reader)?;
let min_ver: u8 = Readable::read(reader)?;
if min_ver > SERIALIZATION_VERSION {
let mut by_id = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
let mut short_to_id = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
for _ in 0..channel_count {
- let mut channel: Channel<ChanSigner> = Readable::read(reader)?;
+ let mut channel: Channel<Signer> = Channel::read(reader, &args.keys_manager)?;
if channel.last_block_connected != Default::default() && channel.last_block_connected != last_block_hash {
return Err(DecodeError::InvalidValue);
}
let funding_txo = channel.get_funding_txo().ok_or(DecodeError::InvalidValue)?;
funding_txo_set.insert(funding_txo.clone());
if let Some(ref mut monitor) = args.channel_monitors.get_mut(&funding_txo) {
- if channel.get_cur_local_commitment_transaction_number() < monitor.get_cur_local_commitment_number() ||
- channel.get_revoked_remote_commitment_transaction_number() < monitor.get_min_seen_secret() ||
- channel.get_cur_remote_commitment_transaction_number() < monitor.get_cur_remote_commitment_number() ||
+ if channel.get_cur_holder_commitment_transaction_number() < monitor.get_cur_holder_commitment_number() ||
+ channel.get_revoked_counterparty_commitment_transaction_number() < monitor.get_min_seen_secret() ||
+ channel.get_cur_counterparty_commitment_transaction_number() < monitor.get_cur_counterparty_commitment_number() ||
channel.get_latest_monitor_update_id() > monitor.get_latest_update_id() {
// If the channel is ahead of the monitor, return InvalidValue:
return Err(DecodeError::InvalidValue);
- } else if channel.get_cur_local_commitment_transaction_number() > monitor.get_cur_local_commitment_number() ||
- channel.get_revoked_remote_commitment_transaction_number() > monitor.get_min_seen_secret() ||
- channel.get_cur_remote_commitment_transaction_number() > monitor.get_cur_remote_commitment_number() ||
+ } else if channel.get_cur_holder_commitment_transaction_number() > monitor.get_cur_holder_commitment_number() ||
+ channel.get_revoked_counterparty_commitment_transaction_number() > monitor.get_min_seen_secret() ||
+ channel.get_cur_counterparty_commitment_transaction_number() > monitor.get_cur_counterparty_commitment_number() ||
channel.get_latest_monitor_update_id() < monitor.get_latest_update_id() {
// But if the channel is behind of the monitor, close the channel:
let (_, _, mut new_failed_htlcs) = channel.force_shutdown(true);
failed_htlcs.append(&mut new_failed_htlcs);
- monitor.broadcast_latest_local_commitment_txn(&args.tx_broadcaster, &args.logger);
+ monitor.broadcast_latest_holder_commitment_txn(&args.tx_broadcaster, &args.logger);
} else {
if let Some(short_channel_id) = channel.get_short_channel_id() {
short_to_id.insert(short_channel_id, channel.channel_id());
for (ref funding_txo, ref mut monitor) in args.channel_monitors.iter_mut() {
if !funding_txo_set.contains(funding_txo) {
- monitor.broadcast_latest_local_commitment_txn(&args.tx_broadcaster, &args.logger);
+ monitor.broadcast_latest_holder_commitment_txn(&args.tx_broadcaster, &args.logger);
}
}
let last_node_announcement_serial: u32 = Readable::read(reader)?;
+ let mut secp_ctx = Secp256k1::new();
+ secp_ctx.seeded_randomize(&args.keys_manager.get_secure_random_bytes());
+
let channel_manager = ChannelManager {
genesis_hash,
fee_estimator: args.fee_estimator,
- monitor: args.monitor,
+ chain_monitor: args.chain_monitor,
tx_broadcaster: args.tx_broadcaster,
latest_block_height: AtomicUsize::new(latest_block_height as usize),
last_block_hash: Mutex::new(last_block_hash),
- secp_ctx: Secp256k1::new(),
+ secp_ctx,
channel_state: Mutex::new(ChannelHolder {
by_id,
pending_events: Mutex::new(pending_events_read),
total_consistency_lock: RwLock::new(()),
+ persistence_notifier: PersistenceNotifier::new(),
+
keys_manager: args.keys_manager,
logger: args.logger,
default_configuration: args.default_config,
Ok((last_block_hash.clone(), channel_manager))
}
}
+
+#[cfg(test)]
+mod tests {
+ use ln::channelmanager::PersistenceNotifier;
+ use std::sync::Arc;
+ use std::sync::atomic::{AtomicBool, Ordering};
+ use std::thread;
+ use std::time::Duration;
+
+ #[test]
+ fn test_wait_timeout() {
+ let persistence_notifier = Arc::new(PersistenceNotifier::new());
+ let thread_notifier = Arc::clone(&persistence_notifier);
+
+ let exit_thread = Arc::new(AtomicBool::new(false));
+ let exit_thread_clone = exit_thread.clone();
+ thread::spawn(move || {
+ loop {
+ let &(ref persist_mtx, ref cnd) = &thread_notifier.persistence_lock;
+ let mut persistence_lock = persist_mtx.lock().unwrap();
+ *persistence_lock = true;
+ cnd.notify_all();
+
+ if exit_thread_clone.load(Ordering::SeqCst) {
+ break
+ }
+ }
+ });
+
+ // Check that we can block indefinitely until updates are available.
+ let _ = persistence_notifier.wait();
+
+ // Check that the PersistenceNotifier will return after the given duration if updates are
+ // available.
+ loop {
+ if persistence_notifier.wait_timeout(Duration::from_millis(100)) {
+ break
+ }
+ }
+
+ exit_thread.store(true, Ordering::SeqCst);
+
+ // Check that the PersistenceNotifier will return after the given duration even if no updates
+ // are available.
+ loop {
+ if !persistence_notifier.wait_timeout(Duration::from_millis(100)) {
+ break
+ }
+ }
+ }
+}
projects / rust-lightning / blobdiff