From 41df7418f56bfb61a40e682681f7d2b96afa1d20 Mon Sep 17 00:00:00 2001
From: Yaroslav Bolyukin <iam@lach.pw>
Date: Tue, 04 May 2021 09:24:26 +0000
Subject: [PATCH] perf: do not submit eth transactions with no logs


---
--- a/pallets/nft/src/eth/log.rs
+++ b/pallets/nft/src/eth/log.rs
@@ -7,6 +7,9 @@
 pub struct LogRecorder(RefCell<Vec<(Vec<H256>, Vec<u8>)>>);
 
 impl LogRecorder {
+    pub fn is_empty(&self) -> bool {
+        self.0.borrow().is_empty()
+    }
     pub fn log(&self, topics: Vec<H256>, data: super::abi::AbiWriter) {
         self.0.borrow_mut().push((topics, data.finish()));
     }
--- a/pallets/nft/src/lib.rs
+++ b/pallets/nft/src/lib.rs
@@ -2204,6 +2204,9 @@
     }
 
     fn submit_logs(collection: CollectionHandle<T>) -> DispatchResult {
+        if collection.logs.is_empty() {
+            return Ok(())
+        }
         T::EthereumTransactionSender::submit_logs_transaction(
             eth::generate_transaction(collection.id, T::EthereumChainId::get()),
             collection.logs.retrieve_logs_for_contract(eth::collection_id_to_address(collection.id)),

-- 
gitstuff