pub(super) pending_msg_events: Vec<events::MessageSendEvent>,
}
+/// State we hold per-peer. In the future we should put channels in here, but for now we only hold
+/// the latest Init features we heard from the peer.
+struct PeerState {
+ latest_features: InitFeatures,
+}
+
#[cfg(not(any(target_pointer_width = "32", target_pointer_width = "64")))]
const ERR: () = "You need at least 32 bit pointers (well, usize, but we'll assume they're the same) for ChannelManager::latest_block_height";
channel_state: Mutex<ChannelHolder<ChanSigner>>,
our_network_key: SecretKey,
+ /// The bulk of our storage will eventually be here (channels and message queues and the like).
+ /// If we are connected to a peer we always at least have an entry here, even if no channels
+ /// are currently open with that peer.
+ /// Because adding or removing an entry is rare, we usually take an outer read lock and then
+ /// operate on the inner value freely. Sadly, this prevents parallel operation when opening a
+ /// new channel.
+ per_peer_state: RwLock<HashMap<PublicKey, Mutex<PeerState>>>,
+
pending_events: Mutex<Vec<events::Event>>,
/// Used when we have to take a BIG lock to make sure everything is self-consistent.
/// Essentially just when we're serializing ourselves out.
pub short_channel_id: Option<u64>,
/// The node_id of our counterparty
pub remote_network_id: PublicKey,
+ /// The Features the channel counterparty provided upon last connection.
+ /// Useful for routing as it is the most up-to-date copy of the counterparty's features and
+ /// many routing-relevant features are present in the init context.
+ pub counterparty_features: InitFeatures,
/// The value, in satoshis, of this channel as appears in the funding output
pub channel_value_satoshis: u64,
/// The user_id passed in to create_channel, or 0 if the channel was inbound.
}),
our_network_key: keys_manager.get_node_secret(),
+ per_peer_state: RwLock::new(HashMap::new()),
+
pending_events: Mutex::new(Vec::new()),
total_consistency_lock: RwLock::new(()),
Ok(())
}
- /// Gets the list of open channels, in random order. See ChannelDetail field documentation for
- /// more information.
- pub fn list_channels(&self) -> Vec<ChannelDetails> {
- let channel_state = self.channel_state.lock().unwrap();
- let mut res = Vec::with_capacity(channel_state.by_id.len());
- for (channel_id, channel) in channel_state.by_id.iter() {
- let (inbound_capacity_msat, outbound_capacity_msat) = channel.get_inbound_outbound_available_balance_msat();
- res.push(ChannelDetails {
- channel_id: (*channel_id).clone(),
- short_channel_id: channel.get_short_channel_id(),
- remote_network_id: channel.get_their_node_id(),
- channel_value_satoshis: channel.get_value_satoshis(),
- inbound_capacity_msat,
- outbound_capacity_msat,
- user_id: channel.get_user_id(),
- is_live: channel.is_live(),
- });
- }
- res
- }
-
- /// Gets the list of usable channels, in random order. Useful as an argument to
- /// Router::get_route to ensure non-announced channels are used.
- ///
- /// These are guaranteed to have their is_live value set to true, see the documentation for
- /// ChannelDetails::is_live for more info on exactly what the criteria are.
- pub fn list_usable_channels(&self) -> Vec<ChannelDetails> {
- let channel_state = self.channel_state.lock().unwrap();
- let mut res = Vec::with_capacity(channel_state.by_id.len());
- for (channel_id, channel) in channel_state.by_id.iter() {
- // Note we use is_live here instead of usable which leads to somewhat confused
- // internal/external nomenclature, but that's ok cause that's probably what the user
- // really wanted anyway.
- if channel.is_live() {
+ fn list_channels_with_filter<F: FnMut(&(&[u8; 32], &Channel<ChanSigner>)) -> bool>(&self, f: F) -> Vec<ChannelDetails> {
+ let mut res = Vec::new();
+ {
+ let channel_state = self.channel_state.lock().unwrap();
+ res.reserve(channel_state.by_id.len());
+ for (channel_id, channel) in channel_state.by_id.iter().filter(f) {
let (inbound_capacity_msat, outbound_capacity_msat) = channel.get_inbound_outbound_available_balance_msat();
res.push(ChannelDetails {
channel_id: (*channel_id).clone(),
short_channel_id: channel.get_short_channel_id(),
remote_network_id: channel.get_their_node_id(),
+ counterparty_features: InitFeatures::empty(),
channel_value_satoshis: channel.get_value_satoshis(),
inbound_capacity_msat,
outbound_capacity_msat,
user_id: channel.get_user_id(),
- is_live: true,
+ is_live: channel.is_live(),
});
}
}
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ for chan in res.iter_mut() {
+ if let Some(peer_state) = per_peer_state.get(&chan.remote_network_id) {
+ chan.counterparty_features = peer_state.lock().unwrap().latest_features.clone();
+ }
+ }
res
}
+ /// Gets the list of open channels, in random order. See ChannelDetail field documentation for
+ /// more information.
+ pub fn list_channels(&self) -> Vec<ChannelDetails> {
+ self.list_channels_with_filter(|_| true)
+ }
+
+ /// Gets the list of usable channels, in random order. Useful as an argument to
+ /// Router::get_route to ensure non-announced channels are used.
+ ///
+ /// These are guaranteed to have their is_live value set to true, see the documentation for
+ /// ChannelDetails::is_live for more info on exactly what the criteria are.
+ pub fn list_usable_channels(&self) -> Vec<ChannelDetails> {
+ // Note we use is_live here instead of usable which leads to somewhat confused
+ // internal/external nomenclature, but that's ok cause that's probably what the user
+ // really wanted anyway.
+ self.list_channels_with_filter(|&(_, ref channel)| channel.is_live())
+ }
+
/// Begins the process of closing a channel. After this call (plus some timeout), no new HTLCs
/// will be accepted on the given channel, and after additional timeout/the closing of all
/// pending HTLCs, the channel will be closed on chain.
let _ = self.total_consistency_lock.read().unwrap();
let mut failed_channels = Vec::new();
let mut failed_payments = Vec::new();
+ let mut no_channels_remain = true;
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
short_to_id.remove(&short_id);
}
return false;
+ } else {
+ no_channels_remain = false;
}
}
true
}
});
}
+ if no_channels_remain {
+ self.per_peer_state.write().unwrap().remove(their_node_id);
+ }
+
for failure in failed_channels.drain(..) {
self.finish_force_close_channel(failure);
}
}
}
- fn peer_connected(&self, their_node_id: &PublicKey) {
+ fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &msgs::Init) {
log_debug!(self, "Generating channel_reestablish events for {}", log_pubkey!(their_node_id));
let _ = self.total_consistency_lock.read().unwrap();
+
+ {
+ let mut peer_state_lock = self.per_peer_state.write().unwrap();
+ match peer_state_lock.entry(their_node_id.clone()) {
+ hash_map::Entry::Vacant(e) => {
+ e.insert(Mutex::new(PeerState {
+ latest_features: init_msg.features.clone(),
+ }));
+ },
+ hash_map::Entry::Occupied(e) => {
+ e.get().lock().unwrap().latest_features = init_msg.features.clone();
+ },
+ }
+ }
+
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
let pending_msg_events = &mut channel_state.pending_msg_events;
}
}
+ let per_peer_state = self.per_peer_state.write().unwrap();
+ (per_peer_state.len() as u64).write(writer)?;
+ for (peer_pubkey, peer_state_mutex) in per_peer_state.iter() {
+ peer_pubkey.write(writer)?;
+ let peer_state = peer_state_mutex.lock().unwrap();
+ peer_state.latest_features.write(writer)?;
+ }
+
Ok(())
}
}
claimable_htlcs.insert(payment_hash, previous_hops);
}
+ let peer_count: u64 = Readable::read(reader)?;
+ let mut per_peer_state = HashMap::with_capacity(cmp::min(peer_count as usize, 128));
+ for _ in 0..peer_count {
+ let peer_pubkey = Readable::read(reader)?;
+ let peer_state = PeerState {
+ latest_features: Readable::read(reader)?,
+ };
+ per_peer_state.insert(peer_pubkey, Mutex::new(peer_state));
+ }
+
let channel_manager = ChannelManager {
genesis_hash,
fee_estimator: args.fee_estimator,
}),
our_network_key: args.keys_manager.get_node_secret(),
+ per_peer_state: RwLock::new(per_peer_state),
+
pending_events: Mutex::new(Vec::new()),
total_consistency_lock: RwLock::new(()),
keys_manager: args.keys_manager,
projects / rust-lightning / blobdiff