feat(fortuna): extract RETRY_PREVIOUS_BLOCKS into EthereumConfig (#2713)

* feat(fortuna): extract RETRY_PREVIOUS_BLOCKS into EthereumConfig

Co-Authored-By: Jayant Krishnamurthy <jayant@dourolabs.xyz>

* style: format keeper.rs

Co-Authored-By: Jayant Krishnamurthy <jayant@dourolabs.xyz>

* refactor: remove RETRY_PREVIOUS_BLOCKS constant as requested in PR feedback

Co-Authored-By: Jayant Krishnamurthy <jayant@dourolabs.xyz>

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Jayant Krishnamurthy <jayant@dourolabs.xyz>

apps/fortuna/src/config.rs

@@ -189,6 +189,9 @@ pub struct EthereumConfig {
     /// at each specified delay. For example: [5, 10, 20].
     #[serde(default = "default_block_delays")]
     pub block_delays: Vec<u64>,
+
+    #[serde(default = "default_retry_previous_blocks")]
+    pub retry_previous_blocks: u64,
 }
 
 fn default_sync_fee_only_on_register() -> bool {
@@ -199,6 +202,10 @@ fn default_block_delays() -> Vec<u64> {
     vec![5]
 }
 
+fn default_retry_previous_blocks() -> u64 {
+    100
+}
+
 fn default_priority_fee_multiplier_pct() -> u64 {
     100
 }

apps/fortuna/src/keeper.rs

@@ -105,7 +105,15 @@ pub async fn run_keeper_threads(
 
     let (tx, rx) = mpsc::channel::<BlockRange>(1000);
     // Spawn a thread to watch for new blocks and send the range of blocks for which events has not been handled to the `tx` channel.
-    spawn(watch_blocks_wrapper(chain_state.clone(), latest_safe_block, tx).in_current_span());
+    spawn(
+        watch_blocks_wrapper(
+            chain_state.clone(),
+            latest_safe_block,
+            tx,
+            chain_eth_config.retry_previous_blocks,
+        )
+        .in_current_span(),
+    );
 
     // Spawn a thread for block processing with configured delays
     spawn(

apps/fortuna/src/keeper/block.rs

@@ -30,8 +30,6 @@ const RETRY_INTERVAL: Duration = Duration::from_secs(5);
 const BLOCK_BATCH_SIZE: u64 = 100;
 /// How much to wait before polling the next latest block
 const POLL_INTERVAL: Duration = Duration::from_secs(2);
-/// Retry last N blocks
-const RETRY_PREVIOUS_BLOCKS: u64 = 100;
 
 #[derive(Debug, Clone)]
 pub struct BlockRange {
@@ -196,6 +194,7 @@ pub async fn watch_blocks_wrapper(
     chain_state: BlockchainState,
     latest_safe_block: BlockNumber,
     tx: mpsc::Sender<BlockRange>,
+    retry_previous_blocks: u64,
 ) {
     let mut last_safe_block_processed = latest_safe_block;
     loop {
@@ -203,6 +202,7 @@ pub async fn watch_blocks_wrapper(
             chain_state.clone(),
             &mut last_safe_block_processed,
             tx.clone(),
+            retry_previous_blocks,
         )
         .in_current_span()
         .await
@@ -221,6 +221,7 @@ pub async fn watch_blocks(
     chain_state: BlockchainState,
     last_safe_block_processed: &mut BlockNumber,
     tx: mpsc::Sender<BlockRange>,
+    retry_previous_blocks: u64,
 ) -> Result<()> {
     tracing::info!("Watching blocks to handle new events");
 
@@ -229,7 +230,7 @@ pub async fn watch_blocks(
 
         let latest_safe_block = get_latest_safe_block(&chain_state).in_current_span().await;
         if latest_safe_block > *last_safe_block_processed {
-            let mut from = latest_safe_block.saturating_sub(RETRY_PREVIOUS_BLOCKS);
+            let mut from = latest_safe_block.saturating_sub(retry_previous_blocks);
 
             // In normal situation, the difference between latest and last safe block should not be more than 2-3 (for arbitrum it can be 10)
             // TODO: add a metric for this in separate PR. We need alerts