Change ChannelMonitor deserialization to return an optional blockhash.

[rust-lightning] / lightning-block-sync / src / init.rs

diff --git a/lightning-block-sync/src/init.rs b/lightning-block-sync/src/init.rs
index 24080b15acb1aa208eca0982e83f01a60117ab29..3e421fc44a9542b7e0a9fb5aa963d2c4bcca4c0d 100644 (file)
--- a/lightning-block-sync/src/init.rs
+++ b/lightning-block-sync/src/init.rs
@@ -61,12 +61,12 @@ use lightning::chain;
 /// ) {
 ///    // Read a serialized channel monitor paired with the block hash when it was persisted.
 ///    let serialized_monitor = "...";
-///    let (monitor_block_hash, mut monitor) = <(BlockHash, ChannelMonitor<S>)>::read(
+///    let (monitor_block_hash_option, mut monitor) = <(Option<BlockHash>, ChannelMonitor<S>)>::read(
 ///            &mut Cursor::new(&serialized_monitor), keys_manager).unwrap();
 ///
 ///    // Read the channel manager paired with the block hash when it was persisted.
 ///    let serialized_manager = "...";
-///    let (manager_block_hash, mut manager) = {
+///    let (manager_block_hash_option, mut manager) = {
 ///            let read_args = ChannelManagerReadArgs::new(
 ///                    keys_manager,
 ///                    fee_estimator,
@@ -76,17 +76,20 @@ use lightning::chain;
 ///                    config,
 ///                    vec![&mut monitor],
 ///            );
-///            <(BlockHash, ChannelManager<S, &ChainMonitor<S, &C, &T, &F, &L, &P>, &T, &K, &F, &L>)>::read(
+///            <(Option<BlockHash>, ChannelManager<S, &ChainMonitor<S, &C, &T, &F, &L, &P>, &T, &K, &F, &L>)>::read(
 ///                    &mut Cursor::new(&serialized_manager), read_args).unwrap()
 ///    };
 ///
 ///    // Synchronize any channel monitors and the channel manager to be on the best block.
 ///    let mut cache = UnboundedCache::new();
 ///    let mut monitor_listener = (monitor, &*tx_broadcaster, &*fee_estimator, &*logger);
-///    let listeners = vec![
-///            (monitor_block_hash, &mut monitor_listener as &mut dyn chain::Listen),
-///            (manager_block_hash, &mut manager as &mut dyn chain::Listen),
-///    ];
+///    let mut listeners = vec![];
+///    if let Some(monitor_block_hash) = monitor_block_hash_option {
+///            listeners.push((monitor_block_hash, &mut monitor_listener as &mut dyn chain::Listen))
+///    }
+///    if let Some(manager_block_hash) = manager_block_hash_option {
+///            listeners.push((manager_block_hash, &mut manager as &mut dyn chain::Listen))
+///    }
 ///    let chain_tip = init::synchronize_listeners(
 ///            block_source, Network::Bitcoin, &mut cache, listeners).await.unwrap();
 ///