add data to leaves size

node/storage/src/log_store/log_manager.rs

@@ -1263,6 +1263,7 @@ pub fn data_to_merkle_leaves(leaf_data: &[u8]) -> Result<Vec<H256>> {
             .collect()
     };
 
+    metrics::DATA_TO_MERKLE_LEAVES_SIZE.update(leaf_data.len() as usize);
     metrics::DATA_TO_MERKLE_LEAVES.update_since(start_time);
     Ok(r)
 }

node/storage/src/log_store/metrics.rs

@@ -1,6 +1,6 @@
 use std::sync::Arc;
 
-use metrics::{register_timer, Timer};
+use metrics::{register_timer, Gauge, GaugeUsize, Timer};
 
 lazy_static::lazy_static! {
     pub static ref PUT_TX: Arc<dyn Timer> = register_timer("log_store_put_tx");
@@ -36,4 +36,6 @@ lazy_static::lazy_static! {
     pub static ref APPEND_ENTRIES: Arc<dyn Timer> = register_timer("log_store_flow_store_append_entries");
 
     pub static ref FINALIZE_TX_WITH_HASH: Arc<dyn Timer> = register_timer("log_store_log_manager_finalize_tx_with_hash");
+
+    pub static ref DATA_TO_MERKLE_LEAVES_SIZE: Arc<dyn Gauge<usize>> = GaugeUsize::register("log_store_data_to_merkle_leaves_size");
 }