Improve gas cost estimation (#337)

Author: Wizdave97

Cargo.lock

@@ -102,7 +102,6 @@ pub async fn get_current_gas_cost_in_usd(
 	chain: StateMachine,
 	api_keys: &str,
 	client: Arc<Provider<Http>>,
-	gas_price_buffer: Option<u32>,
 ) -> Result<GasBreakdown, Error> {
 	let mut gas_price_cost = U256::zero();
 	let mut gas_price = U256::zero();
@@ -288,11 +287,6 @@ pub async fn get_current_gas_cost_in_usd(
 		ethers::utils::format_units(gas_price, "gwei").unwrap()
 	);
 
-	let buffer = gas_price_buffer
-		.map(|buffer| (U256::from(buffer) * gas_price) / U256::from(100u32))
-		.unwrap_or_default();
-	gas_price = gas_price + buffer;
-
 	Ok(GasBreakdown { gas_price, gas_price_cost: gas_price_cost.into(), unit_wei_cost: unit_wei })
 }
 
@@ -423,7 +417,6 @@ mod test {
 			StateMachine::Evm(SEPOLIA_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -446,7 +439,6 @@ mod test {
 			StateMachine::Evm(SEPOLIA_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -469,7 +461,6 @@ mod test {
 			StateMachine::Evm(POLYGON_TESTNET_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -486,14 +477,10 @@ mod test {
 		let provider = Provider::<Http>::try_from(ethereum_rpc_uri).unwrap();
 		let client = Arc::new(provider.clone());
 
-		let ethereum_gas_cost_in_usd = get_current_gas_cost_in_usd(
-			StateMachine::Evm(GNOSIS_CHAIN_ID),
-			"",
-			client.clone(),
-			None,
-		)
-		.await
-		.unwrap();
+		let ethereum_gas_cost_in_usd =
+			get_current_gas_cost_in_usd(StateMachine::Evm(GNOSIS_CHAIN_ID), "", client.clone())
+				.await
+				.unwrap();
 
 		println!("Ethereum Gas Cost Gnosis Mainnet: {:?}", ethereum_gas_cost_in_usd);
 	}
@@ -513,7 +500,6 @@ mod test {
 			StateMachine::Evm(POLYGON_TESTNET_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -536,7 +522,6 @@ mod test {
 			StateMachine::Evm(BSC_TESTNET_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -558,7 +543,6 @@ mod test {
 			StateMachine::Evm(ARBITRUM_SEPOLIA_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -580,7 +564,6 @@ mod test {
 			StateMachine::Evm(OPTIMISM_SEPOLIA_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();
@@ -601,7 +584,6 @@ mod test {
 			StateMachine::Evm(OPTIMISM_SEPOLIA_CHAIN_ID),
 			&ethereum_etherscan_api_key,
 			client.clone(),
-			None,
 		)
 		.await
 		.unwrap();

tesseract/evm/src/gas_oracle.rs

@@ -376,7 +376,6 @@ impl IsmpProvider for EvmClient {
 			self.state_machine,
 			&self.config.etherscan_api_key.clone(),
 			self.client.clone(),
-			self.config.gas_price_buffer,
 		)
 		.await?;
 		let mut gas_estimates = vec![];

tesseract/evm/src/provider.rs

@@ -132,7 +132,6 @@ where
 				client.state_machine,
 				&client.config.etherscan_api_key.clone(),
 				client.client.clone(),
-				client.config.gas_price_buffer,
 			)
 			.await?
 			.gas_price * 2; // for good measure
@@ -228,19 +227,25 @@ pub async fn generate_contract_calls(
 	// Erigon does not support block overrides when tracing so we don't have the option of omiting
 	// the gas price by overriding the base fee
 	let set_gas_price = || !debug_trace || client.client_type.erigon();
-	let gas_price = if set_gas_price() {
+	let mut gas_price = if set_gas_price() {
 		get_current_gas_cost_in_usd(
 			client.state_machine,
 			&client.config.etherscan_api_key.clone(),
 			client.client.clone(),
-			client.config.gas_price_buffer,
 		)
 		.await?
 		.gas_price
 	} else {
 		Default::default()
 	};
 
+	// Only use gas price buffer when submitting transactions
+	if !debug_trace && client.config.gas_price_buffer.is_some() {
+		let buffer = (U256::from(client.config.gas_price_buffer.unwrap_or_default()) * gas_price) /
+			U256::from(100u32);
+		gas_price = gas_price + buffer
+	}
+
 	for message in messages {
 		match message {
 			Message::Consensus(msg) => {

tesseract/evm/src/tx.rs

@@ -1,6 +1,6 @@
 [package]
 name = "tesseract"
-version = "1.0.0"
+version = "1.0.1"
 edition = "2021"
 description = "Chain agnostic relayer implementation for Hyperbridge"
 authors = ["Polytope Labs <[email protected]>"]