fix: when queue is empty, no need build mint tx and clear tx.

branch-chain-aggregator/src/lib.rs

@@ -262,6 +262,7 @@ impl Aggregator {
     fn get_rgbpp_queue_requests(&self) -> Result<(Vec<Request>, OutPoint), Error> {
         let (queue_cell, queue_cell_data) = self.get_rgbpp_queue_cell()?;
         if queue_cell_data.outbox().is_empty() {
+            info!("No requests in queue");
             return Ok((vec![], OutPoint::default()));
         }
         let request_ids: Vec<Byte32> = queue_cell_data.outbox().into_iter().collect();

branch-chain-aggregator/src/transaction/clear.rs

@@ -29,9 +29,14 @@ use std::collections::HashMap;
 impl Aggregator {
     pub(crate) fn create_clear_queue_tx(
         &self,
-        _rgbpp_queue_cells: Vec<Request>,
+        rgbpp_queue_cells: Vec<Request>,
         _queue_cell: OutPoint,
     ) -> Result<H256, Error> {
+        if rgbpp_queue_cells.is_empty() {
+            info!("no queue requests to clear");
+            return Ok(H256::default());
+        }
+
         // get queue cell
         let (queue_cell, queue_cell_data) = self.get_rgbpp_queue_cell()?;
 

branch-chain-aggregator/src/transaction/leap.rs

@@ -41,6 +41,11 @@ impl Aggregator {
         requests: Vec<Request>,
         queue_cell: OutPoint,
     ) -> Result<H256, Error> {
+        if requests.is_empty() {
+            info!("No requests to mint, skip leap tx");
+            return Ok(H256::default());
+        }
+
         // Check if the requests of the last leap tx are duplicated, and if so, return immediately.
         let witness = self.get_last_leap_tx_witness();
         if let Ok((witness, tx_hash)) = witness {