--- /dev/null
+use crate::{BlockSource, BlockSourceResult, Cache, ChainListener, ChainNotifier};
+use crate::poll::{ChainPoller, Validate, ValidatedBlockHeader};
+
+use bitcoin::blockdata::block::{Block, BlockHeader};
+use bitcoin::hash_types::BlockHash;
+use bitcoin::network::constants::Network;
+
+/// Performs a one-time sync of chain listeners using a single *trusted* block source, bringing each
+/// listener's view of the chain from its paired block hash to `block_source`'s best chain tip.
+///
+/// Upon success, the returned header can be used to initialize [`SpvClient`]. In the case of
+/// failure, each listener may be left at a different block hash than the one it was originally
+/// paired with.
+///
+/// Useful during startup to bring the [`ChannelManager`] and each [`ChannelMonitor`] in sync before
+/// switching to [`SpvClient`].
+///
+/// [`SpvClient`]: ../struct.SpvClient.html
+/// [`ChannelManager`]: ../../lightning/ln/channelmanager/struct.ChannelManager.html
+/// [`ChannelMonitor`]: ../../lightning/chain/channelmonitor/struct.ChannelMonitor.html
+pub async fn sync_listeners<B: BlockSource, C: Cache>(
+ block_source: &mut B,
+ network: Network,
+ header_cache: &mut C,
+ mut chain_listeners: Vec<(BlockHash, &mut dyn ChainListener)>,
+) -> BlockSourceResult<ValidatedBlockHeader> {
+ let (best_block_hash, best_block_height) = block_source.get_best_block().await?;
+ let new_header = block_source
+ .get_header(&best_block_hash, best_block_height).await?
+ .validate(best_block_hash)?;
+
+ // Fetch the header for the block hash paired with each listener.
+ let mut chain_listeners_with_old_headers = Vec::new();
+ for (old_block, chain_listener) in chain_listeners.drain(..) {
+ let old_header = match header_cache.look_up(&old_block) {
+ Some(header) => *header,
+ None => block_source
+ .get_header(&old_block, None).await?
+ .validate(old_block)?
+ };
+ chain_listeners_with_old_headers.push((old_header, chain_listener))
+ }
+
+ // Find differences and disconnect blocks for each listener individually.
+ let mut chain_poller = ChainPoller::new(block_source, network);
+ let mut chain_listeners_at_height = Vec::new();
+ let mut most_common_ancestor = None;
+ let mut most_connected_blocks = Vec::new();
+ for (old_header, chain_listener) in chain_listeners_with_old_headers.drain(..) {
+ // Disconnect any stale blocks, but keep them in the cache for the next iteration.
+ let header_cache = &mut ReadOnlyCache(header_cache);
+ let mut chain_notifier = ChainNotifier { header_cache };
+ let difference =
+ chain_notifier.find_difference(new_header, &old_header, &mut chain_poller).await?;
+ chain_notifier.disconnect_blocks(
+ difference.disconnected_blocks,
+ &mut DynamicChainListener(chain_listener),
+ );
+
+ // Keep track of the most common ancestor and all blocks connected across all listeners.
+ chain_listeners_at_height.push((difference.common_ancestor.height, chain_listener));
+ if difference.connected_blocks.len() > most_connected_blocks.len() {
+ most_common_ancestor = Some(difference.common_ancestor);
+ most_connected_blocks = difference.connected_blocks;
+ }
+ }
+
+ // Connect new blocks for all listeners at once to avoid re-fetching blocks.
+ if let Some(common_ancestor) = most_common_ancestor {
+ let mut chain_notifier = ChainNotifier { header_cache };
+ let mut chain_listener = ChainListenerSet(chain_listeners_at_height);
+ chain_notifier.connect_blocks(
+ common_ancestor,
+ most_connected_blocks,
+ &mut chain_poller,
+ &mut chain_listener,
+ ).await.or_else(|(e, _)| Err(e))?;
+ }
+
+ Ok(new_header)
+}
+
+/// A wrapper to make a cache read-only.
+///
+/// Used to prevent losing headers that may be needed to disconnect blocks common to more than one
+/// listener.
+struct ReadOnlyCache<'a, C: Cache>(&'a mut C);
+
+impl<'a, C: Cache> Cache for ReadOnlyCache<'a, C> {
+ fn look_up(&self, block_hash: &BlockHash) -> Option<&ValidatedBlockHeader> {
+ self.0.look_up(block_hash)
+ }
+
+ fn block_connected(&mut self, _block_hash: BlockHash, _block_header: ValidatedBlockHeader) {
+ unreachable!()
+ }
+
+ fn block_disconnected(&mut self, _block_hash: &BlockHash) -> Option<ValidatedBlockHeader> {
+ None
+ }
+}
+
+/// Wrapper for supporting dynamically sized chain listeners.
+struct DynamicChainListener<'a>(&'a mut dyn ChainListener);
+
+impl<'a> ChainListener for DynamicChainListener<'a> {
+ fn block_connected(&mut self, _block: &Block, _height: u32) {
+ unreachable!()
+ }
+
+ fn block_disconnected(&mut self, header: &BlockHeader, height: u32) {
+ self.0.block_disconnected(header, height)
+ }
+}
+
+/// A set of dynamically sized chain listeners, each paired with a starting block height.
+struct ChainListenerSet<'a>(Vec<(u32, &'a mut dyn ChainListener)>);
+
+impl<'a> ChainListener for ChainListenerSet<'a> {
+ fn block_connected(&mut self, block: &Block, height: u32) {
+ for (starting_height, chain_listener) in self.0.iter_mut() {
+ if height > *starting_height {
+ chain_listener.block_connected(block, height);
+ }
+ }
+ }
+
+ fn block_disconnected(&mut self, _header: &BlockHeader, _height: u32) {
+ unreachable!()
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use crate::test_utils::{Blockchain, MockChainListener};
+ use super::*;
+
+ use bitcoin::network::constants::Network;
+
+ #[tokio::test]
+ async fn sync_from_same_chain() {
+ let mut chain = Blockchain::default().with_height(4);
+
+ let mut listener_1 = MockChainListener::new()
+ .expect_block_connected(*chain.at_height(2))
+ .expect_block_connected(*chain.at_height(3))
+ .expect_block_connected(*chain.at_height(4));
+ let mut listener_2 = MockChainListener::new()
+ .expect_block_connected(*chain.at_height(3))
+ .expect_block_connected(*chain.at_height(4));
+ let mut listener_3 = MockChainListener::new()
+ .expect_block_connected(*chain.at_height(4));
+
+ let listeners = vec![
+ (chain.at_height(1).block_hash, &mut listener_1 as &mut dyn ChainListener),
+ (chain.at_height(2).block_hash, &mut listener_2 as &mut dyn ChainListener),
+ (chain.at_height(3).block_hash, &mut listener_3 as &mut dyn ChainListener),
+ ];
+ let mut cache = chain.header_cache(0..=4);
+ match sync_listeners(&mut chain, Network::Bitcoin, &mut cache, listeners).await {
+ Ok(header) => assert_eq!(header, chain.tip()),
+ Err(e) => panic!("Unexpected error: {:?}", e),
+ }
+ }
+
+ #[tokio::test]
+ async fn sync_from_different_chains() {
+ let mut main_chain = Blockchain::default().with_height(4);
+ let fork_chain_1 = main_chain.fork_at_height(1);
+ let fork_chain_2 = main_chain.fork_at_height(2);
+ let fork_chain_3 = main_chain.fork_at_height(3);
+
+ let mut listener_1 = MockChainListener::new()
+ .expect_block_disconnected(*fork_chain_1.at_height(4))
+ .expect_block_disconnected(*fork_chain_1.at_height(3))
+ .expect_block_disconnected(*fork_chain_1.at_height(2))
+ .expect_block_connected(*main_chain.at_height(2))
+ .expect_block_connected(*main_chain.at_height(3))
+ .expect_block_connected(*main_chain.at_height(4));
+ let mut listener_2 = MockChainListener::new()
+ .expect_block_disconnected(*fork_chain_2.at_height(4))
+ .expect_block_disconnected(*fork_chain_2.at_height(3))
+ .expect_block_connected(*main_chain.at_height(3))
+ .expect_block_connected(*main_chain.at_height(4));
+ let mut listener_3 = MockChainListener::new()
+ .expect_block_disconnected(*fork_chain_3.at_height(4))
+ .expect_block_connected(*main_chain.at_height(4));
+
+ let listeners = vec![
+ (fork_chain_1.tip().block_hash, &mut listener_1 as &mut dyn ChainListener),
+ (fork_chain_2.tip().block_hash, &mut listener_2 as &mut dyn ChainListener),
+ (fork_chain_3.tip().block_hash, &mut listener_3 as &mut dyn ChainListener),
+ ];
+ let mut cache = fork_chain_1.header_cache(2..=4);
+ cache.extend(fork_chain_2.header_cache(3..=4));
+ cache.extend(fork_chain_3.header_cache(4..=4));
+ match sync_listeners(&mut main_chain, Network::Bitcoin, &mut cache, listeners).await {
+ Ok(header) => assert_eq!(header, main_chain.tip()),
+ Err(e) => panic!("Unexpected error: {:?}", e),
+ }
+ }
+
+ #[tokio::test]
+ async fn sync_from_overlapping_chains() {
+ let mut main_chain = Blockchain::default().with_height(4);
+ let fork_chain_1 = main_chain.fork_at_height(1);
+ let fork_chain_2 = fork_chain_1.fork_at_height(2);
+ let fork_chain_3 = fork_chain_2.fork_at_height(3);
+
+ let mut listener_1 = MockChainListener::new()
+ .expect_block_disconnected(*fork_chain_1.at_height(4))
+ .expect_block_disconnected(*fork_chain_1.at_height(3))
+ .expect_block_disconnected(*fork_chain_1.at_height(2))
+ .expect_block_connected(*main_chain.at_height(2))
+ .expect_block_connected(*main_chain.at_height(3))
+ .expect_block_connected(*main_chain.at_height(4));
+ let mut listener_2 = MockChainListener::new()
+ .expect_block_disconnected(*fork_chain_2.at_height(4))
+ .expect_block_disconnected(*fork_chain_2.at_height(3))
+ .expect_block_disconnected(*fork_chain_2.at_height(2))
+ .expect_block_connected(*main_chain.at_height(2))
+ .expect_block_connected(*main_chain.at_height(3))
+ .expect_block_connected(*main_chain.at_height(4));
+ let mut listener_3 = MockChainListener::new()
+ .expect_block_disconnected(*fork_chain_3.at_height(4))
+ .expect_block_disconnected(*fork_chain_3.at_height(3))
+ .expect_block_disconnected(*fork_chain_3.at_height(2))
+ .expect_block_connected(*main_chain.at_height(2))
+ .expect_block_connected(*main_chain.at_height(3))
+ .expect_block_connected(*main_chain.at_height(4));
+
+ let listeners = vec![
+ (fork_chain_1.tip().block_hash, &mut listener_1 as &mut dyn ChainListener),
+ (fork_chain_2.tip().block_hash, &mut listener_2 as &mut dyn ChainListener),
+ (fork_chain_3.tip().block_hash, &mut listener_3 as &mut dyn ChainListener),
+ ];
+ let mut cache = fork_chain_1.header_cache(2..=4);
+ cache.extend(fork_chain_2.header_cache(3..=4));
+ cache.extend(fork_chain_3.header_cache(4..=4));
+ match sync_listeners(&mut main_chain, Network::Bitcoin, &mut cache, listeners).await {
+ Ok(header) => assert_eq!(header, main_chain.tip()),
+ Err(e) => panic!("Unexpected error: {:?}", e),
+ }
+ }
+
+ #[tokio::test]
+ async fn cache_connected_and_keep_disconnected_blocks() {
+ let mut main_chain = Blockchain::default().with_height(2);
+ let fork_chain = main_chain.fork_at_height(1);
+ let new_tip = main_chain.tip();
+ let old_tip = fork_chain.tip();
+
+ let mut listener = MockChainListener::new()
+ .expect_block_disconnected(*old_tip)
+ .expect_block_connected(*new_tip);
+
+ let listeners = vec![(old_tip.block_hash, &mut listener as &mut dyn ChainListener)];
+ let mut cache = fork_chain.header_cache(2..=2);
+ match sync_listeners(&mut main_chain, Network::Bitcoin, &mut cache, listeners).await {
+ Ok(_) => {
+ assert!(cache.contains_key(&new_tip.block_hash));
+ assert!(cache.contains_key(&old_tip.block_hash));
+ },
+ Err(e) => panic!("Unexpected error: {:?}", e),
+ }
+ }
+}
#[cfg(any(feature = "rest-client", feature = "rpc-client"))]
pub mod http;
+pub mod init;
pub mod poll;
#[cfg(feature = "rest-client")]
/// custom cache eviction policy. This offers flexibility to those sensitive to resource usage.
/// Hence, there is a trade-off between a lower memory footprint and potentially increased network
/// I/O as headers are re-fetched during fork detection.
-pub struct SpvClient<P: Poll, C: Cache, L: ChainListener> {
+pub struct SpvClient<'a, P: Poll, C: Cache, L: ChainListener> {
chain_tip: ValidatedBlockHeader,
chain_poller: P,
- chain_notifier: ChainNotifier<C>,
+ chain_notifier: ChainNotifier<'a, C>,
chain_listener: L,
}
}
}
-impl<P: Poll, C: Cache, L: ChainListener> SpvClient<P, C, L> {
+impl<'a, P: Poll, C: Cache, L: ChainListener> SpvClient<'a, P, C, L> {
/// Creates a new SPV client using `chain_tip` as the best known chain tip.
///
/// Subsequent calls to [`poll_best_tip`] will poll for the best chain tip using the given chain
pub fn new(
chain_tip: ValidatedBlockHeader,
chain_poller: P,
- header_cache: C,
+ header_cache: &'a mut C,
chain_listener: L,
) -> Self {
let chain_notifier = ChainNotifier { header_cache };
/// Notifies [listeners] of blocks that have been connected or disconnected from the chain.
///
/// [listeners]: trait.ChainListener.html
-struct ChainNotifier<C: Cache> {
+pub struct ChainNotifier<'a, C: Cache> {
/// Cache for looking up headers before fetching from a block source.
- header_cache: C,
+ header_cache: &'a mut C,
}
/// Changes made to the chain between subsequent polls that transformed it from having one chain tip
/// Blocks are given in height-descending order. Therefore, blocks are first disconnected in order
/// before new blocks are connected in reverse order.
struct ChainDifference {
+ /// The most recent ancestor common between the chain tips.
+ ///
+ /// If there are any disconnected blocks, this is where the chain forked.
+ common_ancestor: ValidatedBlockHeader,
+
/// Blocks that were disconnected from the chain since the last poll.
disconnected_blocks: Vec<ValidatedBlockHeader>,
connected_blocks: Vec<ValidatedBlockHeader>,
}
-impl<C: Cache> ChainNotifier<C> {
- /// Finds the fork point between `new_header` and `old_header`, disconnecting blocks from
- /// `old_header` to get to that point and then connecting blocks until `new_header`.
+impl<'a, C: Cache> ChainNotifier<'a, C> {
+ /// Finds the first common ancestor between `new_header` and `old_header`, disconnecting blocks
+ /// from `old_header` to get to that point and then connecting blocks until `new_header`.
///
/// Validates headers along the transition path, but doesn't fetch blocks until the chain is
/// disconnected to the fork point. Thus, this may return an `Err` that includes where the tip
chain_poller: &mut P,
chain_listener: &mut L,
) -> Result<(), (BlockSourceError, Option<ValidatedBlockHeader>)> {
- let mut difference = self.find_difference(new_header, old_header, chain_poller).await
+ let difference = self.find_difference(new_header, old_header, chain_poller).await
.map_err(|e| (e, None))?;
-
- let mut new_tip = *old_header;
- for header in difference.disconnected_blocks.drain(..) {
- if let Some(cached_header) = self.header_cache.block_disconnected(&header.block_hash) {
- assert_eq!(cached_header, header);
- }
- chain_listener.block_disconnected(&header.header, header.height);
- new_tip = header;
- }
-
- for header in difference.connected_blocks.drain(..).rev() {
- let block = chain_poller
- .fetch_block(&header).await
- .or_else(|e| Err((e, Some(new_tip))))?;
- debug_assert_eq!(block.block_hash, header.block_hash);
-
- self.header_cache.block_connected(header.block_hash, header);
- chain_listener.block_connected(&block, header.height);
- new_tip = header;
- }
-
- Ok(())
+ self.disconnect_blocks(difference.disconnected_blocks, chain_listener);
+ self.connect_blocks(
+ difference.common_ancestor,
+ difference.connected_blocks,
+ chain_poller,
+ chain_listener,
+ ).await
}
/// Returns the changes needed to produce the chain with `current_header` as its tip from the
}
}
- Ok(ChainDifference { disconnected_blocks, connected_blocks })
+ let common_ancestor = current;
+ Ok(ChainDifference { common_ancestor, disconnected_blocks, connected_blocks })
}
/// Returns the previous header for the given header, either by looking it up in the cache or
None => chain_poller.look_up_previous_header(header).await,
}
}
+
+ /// Notifies the chain listeners of disconnected blocks.
+ fn disconnect_blocks<L: ChainListener>(
+ &mut self,
+ mut disconnected_blocks: Vec<ValidatedBlockHeader>,
+ chain_listener: &mut L,
+ ) {
+ for header in disconnected_blocks.drain(..) {
+ if let Some(cached_header) = self.header_cache.block_disconnected(&header.block_hash) {
+ assert_eq!(cached_header, header);
+ }
+ chain_listener.block_disconnected(&header.header, header.height);
+ }
+ }
+
+ /// Notifies the chain listeners of connected blocks.
+ async fn connect_blocks<L: ChainListener, P: Poll>(
+ &mut self,
+ mut new_tip: ValidatedBlockHeader,
+ mut connected_blocks: Vec<ValidatedBlockHeader>,
+ chain_poller: &mut P,
+ chain_listener: &mut L,
+ ) -> Result<(), (BlockSourceError, Option<ValidatedBlockHeader>)> {
+ for header in connected_blocks.drain(..).rev() {
+ let block = chain_poller
+ .fetch_block(&header).await
+ .or_else(|e| Err((e, Some(new_tip))))?;
+ debug_assert_eq!(block.block_hash, header.block_hash);
+
+ self.header_cache.block_connected(header.block_hash, header);
+ chain_listener.block_connected(&block, header.height);
+ new_tip = header;
+ }
+
+ Ok(())
+ }
}
#[cfg(test)]
let best_tip = chain.at_height(1);
let poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
- let cache = UnboundedCache::new();
- let mut client = SpvClient::new(best_tip, poller, cache, NullChainListener {});
+ let mut cache = UnboundedCache::new();
+ let mut client = SpvClient::new(best_tip, poller, &mut cache, NullChainListener {});
match client.poll_best_tip().await {
Err(e) => {
assert_eq!(e.kind(), BlockSourceErrorKind::Persistent);
let common_tip = chain.tip();
let poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
- let cache = UnboundedCache::new();
- let mut client = SpvClient::new(common_tip, poller, cache, NullChainListener {});
+ let mut cache = UnboundedCache::new();
+ let mut client = SpvClient::new(common_tip, poller, &mut cache, NullChainListener {});
match client.poll_best_tip().await {
Err(e) => panic!("Unexpected error: {:?}", e),
Ok((chain_tip, blocks_connected)) => {
let old_tip = chain.at_height(1);
let poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
- let cache = UnboundedCache::new();
- let mut client = SpvClient::new(old_tip, poller, cache, NullChainListener {});
+ let mut cache = UnboundedCache::new();
+ let mut client = SpvClient::new(old_tip, poller, &mut cache, NullChainListener {});
match client.poll_best_tip().await {
Err(e) => panic!("Unexpected error: {:?}", e),
Ok((chain_tip, blocks_connected)) => {
let old_tip = chain.at_height(1);
let poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
- let cache = UnboundedCache::new();
- let mut client = SpvClient::new(old_tip, poller, cache, NullChainListener {});
+ let mut cache = UnboundedCache::new();
+ let mut client = SpvClient::new(old_tip, poller, &mut cache, NullChainListener {});
match client.poll_best_tip().await {
Err(e) => panic!("Unexpected error: {:?}", e),
Ok((chain_tip, blocks_connected)) => {
let old_tip = chain.at_height(1);
let poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
- let cache = UnboundedCache::new();
- let mut client = SpvClient::new(old_tip, poller, cache, NullChainListener {});
+ let mut cache = UnboundedCache::new();
+ let mut client = SpvClient::new(old_tip, poller, &mut cache, NullChainListener {});
match client.poll_best_tip().await {
Err(e) => panic!("Unexpected error: {:?}", e),
Ok((chain_tip, blocks_connected)) => {
let worse_tip = chain.tip();
let poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
- let cache = UnboundedCache::new();
- let mut client = SpvClient::new(best_tip, poller, cache, NullChainListener {});
+ let mut cache = UnboundedCache::new();
+ let mut client = SpvClient::new(best_tip, poller, &mut cache, NullChainListener {});
match client.poll_best_tip().await {
Err(e) => panic!("Unexpected error: {:?}", e),
Ok((chain_tip, blocks_connected)) => {
let mut listener = MockChainListener::new()
.expect_block_connected(*chain.at_height(2))
.expect_block_connected(*new_tip);
- let mut notifier = ChainNotifier { header_cache: chain.header_cache(0..=1) };
+ let mut notifier = ChainNotifier { header_cache: &mut chain.header_cache(0..=1) };
let mut poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((e, _)) => panic!("Unexpected error: {:?}", e),
let new_tip = test_chain.tip();
let old_tip = main_chain.tip();
let mut listener = MockChainListener::new();
- let mut notifier = ChainNotifier { header_cache: main_chain.header_cache(0..=1) };
+ let mut notifier = ChainNotifier { header_cache: &mut main_chain.header_cache(0..=1) };
let mut poller = poll::ChainPoller::new(&mut test_chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((e, _)) => {
let mut listener = MockChainListener::new()
.expect_block_disconnected(*old_tip)
.expect_block_connected(*new_tip);
- let mut notifier = ChainNotifier { header_cache: main_chain.header_cache(0..=2) };
+ let mut notifier = ChainNotifier { header_cache: &mut main_chain.header_cache(0..=2) };
let mut poller = poll::ChainPoller::new(&mut fork_chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((e, _)) => panic!("Unexpected error: {:?}", e),
.expect_block_disconnected(*old_tip)
.expect_block_disconnected(*main_chain.at_height(2))
.expect_block_connected(*new_tip);
- let mut notifier = ChainNotifier { header_cache: main_chain.header_cache(0..=3) };
+ let mut notifier = ChainNotifier { header_cache: &mut main_chain.header_cache(0..=3) };
let mut poller = poll::ChainPoller::new(&mut fork_chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((e, _)) => panic!("Unexpected error: {:?}", e),
.expect_block_disconnected(*old_tip)
.expect_block_connected(*fork_chain.at_height(2))
.expect_block_connected(*new_tip);
- let mut notifier = ChainNotifier { header_cache: main_chain.header_cache(0..=2) };
+ let mut notifier = ChainNotifier { header_cache: &mut main_chain.header_cache(0..=2) };
let mut poller = poll::ChainPoller::new(&mut fork_chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((e, _)) => panic!("Unexpected error: {:?}", e),
let new_tip = chain.tip();
let old_tip = chain.at_height(1);
let mut listener = MockChainListener::new();
- let mut notifier = ChainNotifier { header_cache: chain.header_cache(0..=1) };
+ let mut notifier = ChainNotifier { header_cache: &mut chain.header_cache(0..=1) };
let mut poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((_, tip)) => assert_eq!(tip, None),
let new_tip = chain.tip();
let old_tip = chain.at_height(1);
let mut listener = MockChainListener::new();
- let mut notifier = ChainNotifier { header_cache: chain.header_cache(0..=3) };
+ let mut notifier = ChainNotifier { header_cache: &mut chain.header_cache(0..=3) };
let mut poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((_, tip)) => assert_eq!(tip, Some(old_tip)),
let old_tip = chain.at_height(1);
let mut listener = MockChainListener::new()
.expect_block_connected(*chain.at_height(2));
- let mut notifier = ChainNotifier { header_cache: chain.header_cache(0..=3) };
+ let mut notifier = ChainNotifier { header_cache: &mut chain.header_cache(0..=3) };
let mut poller = poll::ChainPoller::new(&mut chain, Network::Testnet);
match notifier.sync_listener(new_tip, &old_tip, &mut poller, &mut listener).await {
Err((_, tip)) => assert_eq!(tip, Some(chain.at_height(2))),
projects / rust-lightning / commitdiff