pub fn from_pubkey(pubkey: &PublicKey) -> Self {
NodeId(pubkey.serialize())
}
-
+
/// Get the public key slice from this NodeId
pub fn as_slice(&self) -> &[u8] {
&self.0
/// Represents the network as nodes and channels between them
pub struct NetworkGraph {
+ /// The unix timestamp in UTC provided by the most recent rapid gossip sync
+ /// It will be set by the rapid sync process after every sync completion
+ pub last_rapid_gossip_sync_timestamp: Option<u32>,
genesis_hash: BlockHash,
// Lock order: channels -> nodes
channels: RwLock<BTreeMap<u64, ChannelInfo>>,
genesis_hash: self.genesis_hash.clone(),
channels: RwLock::new(channels.clone()),
nodes: RwLock::new(nodes.clone()),
+ last_rapid_gossip_sync_timestamp: self.last_rapid_gossip_sync_timestamp.clone(),
}
}
}
/// Update to the [`NetworkGraph`] based on payment failure information conveyed via the Onion
/// return packet by a node along the route. See [BOLT #4] for details.
///
-/// [BOLT #4]: https://github.com/lightningnetwork/lightning-rfc/blob/master/04-onion-routing.md
+/// [BOLT #4]: https://github.com/lightning/bolts/blob/master/04-onion-routing.md
#[derive(Clone, Debug, PartialEq)]
pub enum NetworkUpdate {
/// An error indicating a `channel_update` messages should be applied via
};
Some((DirectedChannelInfo::new(self, direction), target))
}
+
+ /// Returns a [`ChannelUpdateInfo`] based on the direction implied by the channel_flag.
+ pub fn get_directional_info(&self, channel_flags: u8) -> Option<&ChannelUpdateInfo> {
+ let direction = channel_flags & 1u8;
+ if direction == 0 {
+ self.one_to_two.as_ref()
+ } else {
+ self.two_to_one.as_ref()
+ }
+ }
}
impl fmt::Display for ChannelInfo {
node_info.write(writer)?;
}
- write_tlv_fields!(writer, {});
+ write_tlv_fields!(writer, {
+ (1, self.last_rapid_gossip_sync_timestamp, option),
+ });
Ok(())
}
}
let node_info = Readable::read(reader)?;
nodes.insert(node_id, node_info);
}
- read_tlv_fields!(reader, {});
+
+ let mut last_rapid_gossip_sync_timestamp: Option<u32> = None;
+ read_tlv_fields!(reader, {
+ (1, last_rapid_gossip_sync_timestamp, option),
+ });
Ok(NetworkGraph {
genesis_hash,
channels: RwLock::new(channels),
nodes: RwLock::new(nodes),
+ last_rapid_gossip_sync_timestamp,
})
}
}
genesis_hash,
channels: RwLock::new(BTreeMap::new()),
nodes: RwLock::new(BTreeMap::new()),
+ last_rapid_gossip_sync_timestamp: None,
}
}
self.update_channel_from_unsigned_announcement_intern(msg, None, chain_access)
}
+ /// Update channel from partial announcement data received via rapid gossip sync
+ ///
+ /// `timestamp: u64`: Timestamp emulating the backdated original announcement receipt (by the
+ /// rapid gossip sync server)
+ ///
+ /// All other parameters as used in [`msgs::UnsignedChannelAnnouncement`] fields.
+ pub fn add_channel_from_partial_announcement(&self, short_channel_id: u64, timestamp: u64, features: ChannelFeatures, node_id_1: PublicKey, node_id_2: PublicKey) -> Result<(), LightningError> {
+ if node_id_1 == node_id_2 {
+ return Err(LightningError{err: "Channel announcement node had a channel with itself".to_owned(), action: ErrorAction::IgnoreError});
+ };
+
+ let node_1 = NodeId::from_pubkey(&node_id_1);
+ let node_2 = NodeId::from_pubkey(&node_id_2);
+ let channel_info = ChannelInfo {
+ features,
+ node_one: node_1.clone(),
+ one_to_two: None,
+ node_two: node_2.clone(),
+ two_to_one: None,
+ capacity_sats: None,
+ announcement_message: None,
+ announcement_received_time: timestamp,
+ };
+
+ self.add_channel_between_nodes(short_channel_id, channel_info, None)
+ }
+
+ fn add_channel_between_nodes(&self, short_channel_id: u64, channel_info: ChannelInfo, utxo_value: Option<u64>) -> Result<(), LightningError> {
+ let mut channels = self.channels.write().unwrap();
+ let mut nodes = self.nodes.write().unwrap();
+
+ let node_id_a = channel_info.node_one.clone();
+ let node_id_b = channel_info.node_two.clone();
+
+ match channels.entry(short_channel_id) {
+ BtreeEntry::Occupied(mut entry) => {
+ //TODO: because asking the blockchain if short_channel_id is valid is only optional
+ //in the blockchain API, we need to handle it smartly here, though it's unclear
+ //exactly how...
+ if utxo_value.is_some() {
+ // Either our UTXO provider is busted, there was a reorg, or the UTXO provider
+ // only sometimes returns results. In any case remove the previous entry. Note
+ // that the spec expects us to "blacklist" the node_ids involved, but we can't
+ // do that because
+ // a) we don't *require* a UTXO provider that always returns results.
+ // b) we don't track UTXOs of channels we know about and remove them if they
+ // get reorg'd out.
+ // c) it's unclear how to do so without exposing ourselves to massive DoS risk.
+ Self::remove_channel_in_nodes(&mut nodes, &entry.get(), short_channel_id);
+ *entry.get_mut() = channel_info;
+ } else {
+ return Err(LightningError{err: "Already have knowledge of channel".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
+ }
+ },
+ BtreeEntry::Vacant(entry) => {
+ entry.insert(channel_info);
+ }
+ };
+
+ for current_node_id in [node_id_a, node_id_b].iter() {
+ match nodes.entry(current_node_id.clone()) {
+ BtreeEntry::Occupied(node_entry) => {
+ node_entry.into_mut().channels.push(short_channel_id);
+ },
+ BtreeEntry::Vacant(node_entry) => {
+ node_entry.insert(NodeInfo {
+ channels: vec!(short_channel_id),
+ lowest_inbound_channel_fees: None,
+ announcement_info: None,
+ });
+ }
+ };
+ };
+
+ Ok(())
+ }
+
fn update_channel_from_unsigned_announcement_intern<C: Deref>(
&self, msg: &msgs::UnsignedChannelAnnouncement, full_msg: Option<&msgs::ChannelAnnouncement>, chain_access: &Option<C>
) -> Result<(), LightningError>
}
let chan_info = ChannelInfo {
- features: msg.features.clone(),
- node_one: NodeId::from_pubkey(&msg.node_id_1),
- one_to_two: None,
- node_two: NodeId::from_pubkey(&msg.node_id_2),
- two_to_one: None,
- capacity_sats: utxo_value,
- announcement_message: if msg.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY
- { full_msg.cloned() } else { None },
- announcement_received_time,
- };
-
- let mut channels = self.channels.write().unwrap();
- let mut nodes = self.nodes.write().unwrap();
- match channels.entry(msg.short_channel_id) {
- BtreeEntry::Occupied(mut entry) => {
- //TODO: because asking the blockchain if short_channel_id is valid is only optional
- //in the blockchain API, we need to handle it smartly here, though it's unclear
- //exactly how...
- if utxo_value.is_some() {
- // Either our UTXO provider is busted, there was a reorg, or the UTXO provider
- // only sometimes returns results. In any case remove the previous entry. Note
- // that the spec expects us to "blacklist" the node_ids involved, but we can't
- // do that because
- // a) we don't *require* a UTXO provider that always returns results.
- // b) we don't track UTXOs of channels we know about and remove them if they
- // get reorg'd out.
- // c) it's unclear how to do so without exposing ourselves to massive DoS risk.
- Self::remove_channel_in_nodes(&mut nodes, &entry.get(), msg.short_channel_id);
- *entry.get_mut() = chan_info;
- } else {
- return Err(LightningError{err: "Already have knowledge of channel".to_owned(), action: ErrorAction::IgnoreDuplicateGossip});
- }
- },
- BtreeEntry::Vacant(entry) => {
- entry.insert(chan_info);
- }
+ features: msg.features.clone(),
+ node_one: NodeId::from_pubkey(&msg.node_id_1),
+ one_to_two: None,
+ node_two: NodeId::from_pubkey(&msg.node_id_2),
+ two_to_one: None,
+ capacity_sats: utxo_value,
+ announcement_message: if msg.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY
+ { full_msg.cloned() } else { None },
+ announcement_received_time,
};
- macro_rules! add_channel_to_node {
- ( $node_id: expr ) => {
- match nodes.entry($node_id) {
- BtreeEntry::Occupied(node_entry) => {
- node_entry.into_mut().channels.push(msg.short_channel_id);
- },
- BtreeEntry::Vacant(node_entry) => {
- node_entry.insert(NodeInfo {
- channels: vec!(msg.short_channel_id),
- lowest_inbound_channel_fees: None,
- announcement_info: None,
- });
- }
- }
- };
- }
-
- add_channel_to_node!(NodeId::from_pubkey(&msg.node_id_1));
- add_channel_to_node!(NodeId::from_pubkey(&msg.node_id_2));
-
- Ok(())
+ self.add_channel_between_nodes(msg.short_channel_id, chan_info, utxo_value)
}
/// Close a channel if a corresponding HTLC fail was sent.
use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
use routing::network_graph::{NetGraphMsgHandler, NetworkGraph, NetworkUpdate, MAX_EXCESS_BYTES_FOR_RELAY};
use ln::msgs::{Init, OptionalField, RoutingMessageHandler, UnsignedNodeAnnouncement, NodeAnnouncement,
- UnsignedChannelAnnouncement, ChannelAnnouncement, UnsignedChannelUpdate, ChannelUpdate,
+ UnsignedChannelAnnouncement, ChannelAnnouncement, UnsignedChannelUpdate, ChannelUpdate,
ReplyChannelRange, QueryChannelRange, QueryShortChannelIds, MAX_VALUE_MSAT};
use util::test_utils;
use util::logger::Logger;
assert!(<NetworkGraph>::read(&mut io::Cursor::new(&w.0)).unwrap() == network_graph);
}
+ #[test]
+ fn network_graph_tlv_serialization() {
+ let mut network_graph = create_network_graph();
+ network_graph.last_rapid_gossip_sync_timestamp.replace(42);
+
+ let mut w = test_utils::TestVecWriter(Vec::new());
+ network_graph.write(&mut w).unwrap();
+ let reassembled_network_graph: NetworkGraph = Readable::read(&mut io::Cursor::new(&w.0)).unwrap();
+ assert!(reassembled_network_graph == network_graph);
+ assert_eq!(reassembled_network_graph.last_rapid_gossip_sync_timestamp.unwrap(), 42);
+ }
+
#[test]
#[cfg(feature = "std")]
fn calling_sync_routing_table() {
projects / rust-lightning / blobdiff