From 4cd2d72c30b8137f94edd92c63a8fdf124c0c567 Mon Sep 17 00:00:00 2001
From: Rahul Subramaniyam <rahulksnv@gmail.com>
Date: Fri, 1 Dec 2023 13:28:26 -0800
Subject: [PATCH] Logs

---
 Cargo.lock                    |  1 +
 frame/evm/src/runner/stack.rs |  8 ++++++++
 template/runtime/Cargo.toml   |  2 ++
 template/runtime/src/lib.rs   | 23 +++++++++++++++++++++--
 4 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index c1d722e3cb..ee9fa3041d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3297,6 +3297,7 @@ dependencies = [
  "frame-system",
  "frame-system-benchmarking",
  "frame-system-rpc-runtime-api",
+ "log",
  "pallet-aura",
  "pallet-balances",
  "pallet-base-fee",
diff --git a/frame/evm/src/runner/stack.rs b/frame/evm/src/runner/stack.rs
index d6a9ecccc4..989e4e3f17 100644
--- a/frame/evm/src/runner/stack.rs
+++ b/frame/evm/src/runner/stack.rs
@@ -91,6 +91,10 @@ where
 		) -> (ExitReason, R),
 		R: Default,
 	{
+		log::debug!(
+			target: "evm",
+			"Runner::execute(): in",
+		);
 		let (base_fee, weight) = T::FeeCalculator::min_gas_price();
 
 		#[cfg(feature = "forbid-evm-reentrancy")]
@@ -122,6 +126,10 @@ where
 		#[cfg(feature = "forbid-evm-reentrancy")]
 		let _ = IN_EVM.with(|in_evm| in_evm.take());
 
+		log::debug!(
+			target: "evm",
+			"Runner::execute(): out",
+		);
 		res
 	}
 
diff --git a/template/runtime/Cargo.toml b/template/runtime/Cargo.toml
index 5547dee3b9..e26622aad3 100644
--- a/template/runtime/Cargo.toml
+++ b/template/runtime/Cargo.toml
@@ -12,6 +12,7 @@ repository = { workspace = true }
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
+log = { workspace = true }
 scale-codec = { package = "parity-scale-codec", workspace = true }
 scale-info = { workspace = true }
 
@@ -66,6 +67,7 @@ default = ["std", "with-rocksdb-weights"]
 with-rocksdb-weights = []
 with-paritydb-weights = []
 std = [
+    "log/std",
 	"scale-codec/std",
 	"scale-info/std",
 	# Substrate
diff --git a/template/runtime/src/lib.rs b/template/runtime/src/lib.rs
index 04b4a613f4..2a9fbdf36a 100644
--- a/template/runtime/src/lib.rs
+++ b/template/runtime/src/lib.rs
@@ -590,7 +590,17 @@ impl_runtime_apis! {
 
 	impl sp_block_builder::BlockBuilder<Block> for Runtime {
 		fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
-			Executive::apply_extrinsic(extrinsic)
+			log::debug!(
+				target: "evm",
+				"sp_block_builder::BlockBuilder(): in",
+			);
+			let ret = Executive::apply_extrinsic(extrinsic);
+			log::debug!(
+				target: "evm",
+				"sp_block_builder::BlockBuilder(): out = {:?}",
+				ret
+			);
+			ret
 		}
 
 		fn finalize_block() -> <Block as BlockT>::Header {
@@ -816,7 +826,16 @@ impl_runtime_apis! {
 			xts: Vec<<Block as BlockT>::Extrinsic>,
 		) -> (Option<pallet_ethereum::Block>, Option<Vec<TransactionStatus>>) {
 			for ext in xts.into_iter() {
-				let _ = Executive::apply_extrinsic(ext);
+				log::debug!(
+					target: "evm",
+					"EthereumRuntimeRPCApi(): in",
+				);
+				let ret = Executive::apply_extrinsic(ext);
+				log::debug!(
+					target: "evm",
+					"EthereumRuntimeRPCApi(): out = {:?}",
+					ret
+				);
 			}
 
 			Ethereum::on_finalize(System::block_number() + 1);