Merge pull request #1551 from get10101/fix/load-persisted-dlc-chain-m…

…onitor

Load persisted `rust-dlc` `ChainMonitor` whenever possible

CHANGELOG.md

@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 - Allow to drain on-chain wallet by sending amount `0`.
+- Load persisted `rust-dlc` `ChainMonitor` on restart.
 
 ## [1.4.4] - 2023-10-28
 

crates/ln-dlc-node/src/node/dlc_manager.rs

@@ -9,6 +9,7 @@ use dlc_manager::channel::signed_channel::SignedChannel;
 use dlc_manager::channel::signed_channel::SignedChannelState;
 use dlc_manager::channel::Channel;
 use dlc_manager::Oracle;
+use dlc_manager::Storage;
 use dlc_manager::SystemTimeProvider;
 use dlc_sled_storage_provider::SledStorageProvider;
 use p2pd_oracle_client::P2PDOracleClient;
@@ -39,6 +40,15 @@ pub fn build(
     let oracle_pubkey = p2pdoracle.get_public_key();
     let oracles = HashMap::from([(oracle_pubkey, p2pdoracle)]);
 
+    // FIXME: We need to do this to ensure that we can upgrade `Node`s from LDK 0.0.114 to 0.0.116.
+    // We should remove this workaround as soon as possible.
+    if let Err(e) = storage.get_chain_monitor() {
+        tracing::error!("Failed to load DLC ChainMonitor from storage: {e:#}");
+
+        tracing::info!("Overwriting old DLC ChainMonitor with empty one to be able to proceed");
+        storage.persist_chain_monitor(&dlc_manager::chain_monitor::ChainMonitor::new(0))?;
+    }
+
     DlcManager::new(
         ln_dlc_wallet.clone(),
         ln_dlc_wallet,