feat: add evm call wrapper extrinsic to dispatcher pallet

integration-tests/src/dispatcher.rs

@@ -1,7 +1,9 @@
 use crate::evm::MockHandle;
 use crate::polkadot_test_net::*;
 use fp_evm::PrecompileSet;
-use frame_support::dispatch::{GetDispatchInfo, PostDispatchInfo};
+use frame_support::dispatch::{
+	extract_actual_pays_fee, extract_actual_weight, GetDispatchInfo, Pays, PostDispatchInfo,
+};
 use frame_support::{assert_err, assert_noop, assert_ok};
 use hydradx_runtime::evm::precompiles::HydraDXPrecompiles;
 use hydradx_runtime::evm::WethAssetId;
@@ -14,6 +16,7 @@ use sp_core::Encode;
 use sp_core::Get;
 use sp_core::{ByteArray, U256};
 use sp_runtime::traits::SignedExtension;
+use sp_runtime::DispatchErrorWithPostInfo;
 use test_utils::last_events;
 use xcm_emulator::TestExt;
 
@@ -438,3 +441,114 @@ fn dispatch_with_extra_gas_should_charge_extra_gas_when_calls_fail() {
 		);
 	});
 }
+
+#[test]
+fn dispatch_evm_call_should_work_when_evm_call_succeeds() {
+	TestNet::reset();
+	Hydra::execute_with(|| {
+		// Arrange: Deploy a valid contract to interact with
+		let contract = crate::utils::contracts::deploy_contract("HydraToken", crate::contracts::deployer());
+
+		assert_ok!(hydradx_runtime::Tokens::set_balance(
+			hydradx_runtime::RuntimeOrigin::root(),
+			evm_account(),
+			WethAssetId::get(),
+			1_000_000_000_000_000_000u128,
+			0
+		));
+
+		// Create a valid EVM call that will succeed
+		let call = Box::new(RuntimeCall::EVM(pallet_evm::Call::call {
+			source: evm_address(),
+			target: contract,
+			input: hex!["06fdde03"].to_vec(), // name() function selector
+			value: U256::zero(),
+			gas_limit: 100_000,
+			max_fee_per_gas: U256::from(233_460_000),
+			max_priority_fee_per_gas: None,
+			nonce: None,
+			access_list: vec![],
+		}));
+
+		// Act: Dispatch the EVM call
+		assert_ok!(Dispatcher::dispatch_evm_call(evm_signed_origin(evm_address()), call));
+
+		// Assert: LastEvmCallFailed storage is clean
+		assert_eq!(Dispatcher::last_evm_call_failed(), false);
+	});
+}
+
+#[test]
+fn dispatch_evm_call_should_fail_with_evm_call_failed_error() {
+	TestNet::reset();
+	Hydra::execute_with(|| {
+		assert_eq!(Dispatcher::last_evm_call_failed(), false);
+
+		assert_ok!(hydradx_runtime::Tokens::set_balance(
+			hydradx_runtime::RuntimeOrigin::root(),
+			evm_account(),
+			WethAssetId::get(),
+			1_000_000_000_000_000_000u128,
+			0
+		));
+
+		// Arrange: Create an EVM call that will fail (invalid target address)
+		let invalid_target = EvmAddress::from_slice(&[0x11; 20]);
+		let call = RuntimeCall::EVM(pallet_evm::Call::call {
+			source: evm_address(),
+			target: invalid_target,
+			input: hex!["12345678"].to_vec(), // Invalid function selector
+			gas_limit: 100_000,
+			value: U256::zero(),
+			max_fee_per_gas: U256::from(233_460_000),
+			max_priority_fee_per_gas: None,
+			nonce: None,
+			access_list: vec![],
+		});
+		let call_data = call.get_dispatch_info();
+		let boxed_call = Box::new(call);
+
+		// Act & Assert: The dispatch should fail with EvmCallFailed error
+		let result = Dispatcher::dispatch_evm_call(evm_signed_origin(evm_address()), boxed_call);
+		assert_eq!(
+			result,
+			Err(DispatchErrorWithPostInfo {
+				post_info: PostDispatchInfo {
+					actual_weight: Some(extract_actual_weight(&result, &call_data)),
+					pays_fee: extract_actual_pays_fee(&result, &call_data),
+				},
+				error: pallet_dispatcher::Error::<Runtime>::EvmCallFailed.into(),
+			})
+		);
+
+		// Assert: LastEvmCallFailed storage is cleaned after the execution
+		assert_eq!(Dispatcher::last_evm_call_failed(), false);
+	});
+}
+
+#[test]
+fn dispatch_evm_call_should_fail_with_not_evm_call_error() {
+	TestNet::reset();
+	Hydra::execute_with(|| {
+		// Arrange: Create a non-EVM call
+		let call = RuntimeCall::Currencies(pallet_currencies::Call::transfer {
+			dest: BOB.into(),
+			currency_id: 1234,
+			amount: 100,
+		});
+		let boxed_call = Box::new(call.clone());
+
+		// Act & Assert: The dispatch should fail with NotEvmCall error
+		let result = Dispatcher::dispatch_evm_call(evm_signed_origin(evm_address()), boxed_call);
+		assert_eq!(
+			result,
+			Err(DispatchErrorWithPostInfo {
+				post_info: PostDispatchInfo {
+					actual_weight: None,
+					pays_fee: Pays::Yes,
+				},
+				error: pallet_dispatcher::Error::<Runtime>::NotEvmCall.into(),
+			})
+		);
+	})
+}

pallets/dispatcher/Cargo.toml

@@ -14,9 +14,6 @@ readme = "README.md"
 codec = { workspace = true, features = ["derive", "max-encoded-len"] }
 scale-info = { workspace = true }
 
-pallet-evm = { workspace = true }
-hydradx-traits = { workspace = true }
-
 # primitives
 sp-runtime = { workspace = true }
 sp-std = { workspace = true }
@@ -26,12 +23,17 @@ sp-core = { workspace = true }
 frame-support = { workspace = true }
 frame-system = { workspace = true }
 
+# HydraDX dependencies
+hydradx-traits = { workspace = true }
+
+# EVM dependencies
+pallet-evm = { workspace = true }
+
 # Optional imports for benchmarking
 frame-benchmarking = { workspace = true, optional = true }
 
 [dev-dependencies]
 sp-io = { workspace = true }
-hydradx-traits = { workspace = true }
 orml-tokens = { workspace = true }
 orml-traits = { workspace = true }
 test-utils = { workspace = true }

pallets/dispatcher/src/lib.rs

@@ -39,6 +39,7 @@ mod benchmarking;
 pub mod weights;
 
 use frame_support::dispatch::PostDispatchInfo;
+use hydradx_traits::evm::MaybeEvmCall;
 use pallet_evm::GasWeightMapping;
 use sp_runtime::{traits::Dispatchable, DispatchResultWithInfo};
 pub use weights::WeightInfo;
@@ -76,6 +77,9 @@ pub mod pallet {
 			+ From<frame_system::Call<Self>>
 			+ Parameter;
 
+		/// The trait to check whether RuntimeCall is [pallet_evm::Call::call].
+		type EvmCallIdentifier: MaybeEvmCall<<Self as Config>::RuntimeCall>;
+
 		type TreasuryManagerOrigin: EnsureOrigin<Self::RuntimeOrigin>;
 		type AaveManagerOrigin: EnsureOrigin<Self::RuntimeOrigin>;
 
@@ -101,6 +105,17 @@ pub mod pallet {
 	#[pallet::getter(fn extra_gas)]
 	pub type ExtraGas<T: Config> = StorageValue<_, u64, ValueQuery>;
 
+	#[pallet::storage]
+	#[pallet::whitelist_storage]
+	#[pallet::getter(fn last_evm_call_failed)]
+	pub type LastEvmCallFailed<T: Config> = StorageValue<_, bool, ValueQuery>;
+
+	#[pallet::error]
+	pub enum Error<T> {
+		EvmCallFailed,
+		NotEvmCall,
+	}
+
 	#[pallet::event]
 	#[pallet::generate_deposit(pub(super) fn deposit_event)]
 	pub enum Event<T: Config> {
@@ -236,6 +251,47 @@ pub mod pallet {
 				}),
 			}
 		}
+
+		/// Execute a single EVM call.
+		/// This extrinsic will fail if the EVM call returns any other ExitReason than `ExitSucceed(Returned)`.
+		/// Look the [hydradx_runtime::evm::runner::WrapRunner] implementation for details.
+		///
+		/// Parameters:
+		/// - `origin`: Signed origin.
+		/// - `call`: presumably `pallet_evm::Call::call` as boxed `RuntimeCall`.
+		///
+		/// Emits `EvmCallFailed` event when failed.
+		#[pallet::call_index(4)]
+		#[pallet::weight(call.get_dispatch_info().weight)]
+		pub fn dispatch_evm_call(
+			origin: OriginFor<T>,
+			call: Box<<T as Config>::RuntimeCall>,
+		) -> DispatchResultWithPostInfo {
+			ensure!(T::EvmCallIdentifier::is_evm_call(&call), Error::<T>::NotEvmCall);
+
+			let (result, actual_weight) = Self::do_dispatch(origin, *call);
+
+			match result {
+				Ok(_) if Self::last_evm_call_failed() => Err(DispatchErrorWithPostInfo {
+					post_info: PostDispatchInfo {
+						actual_weight,
+						pays_fee: Pays::Yes,
+					},
+					error: Error::<T>::EvmCallFailed.into(),
+				}),
+				Ok(_) => Ok(PostDispatchInfo {
+					actual_weight,
+					pays_fee: Pays::Yes,
+				}),
+				Err(err) => Err(DispatchErrorWithPostInfo {
+					post_info: PostDispatchInfo {
+						actual_weight,
+						pays_fee: Pays::Yes,
+					},
+					error: err.error,
+				}),
+			}
+		}
 	}
 }
 
@@ -271,4 +327,12 @@ impl<T: Config> Pallet<T> {
 			ExtraGas::<T>::set(new_value);
 		}
 	}
+
+	pub fn set_last_evm_call_failed(status: bool) {
+		if !status {
+			LastEvmCallFailed::<T>::kill();
+		} else {
+			LastEvmCallFailed::<T>::put(status);
+		}
+	}
 }

pallets/dispatcher/src/mock.rs

@@ -104,6 +104,13 @@ impl pallet_evm::GasWeightMapping for MockGasWeightMapping {
 	}
 }
 
+pub struct EvmCallIdentifier;
+impl MaybeEvmCall<RuntimeCall> for EvmCallIdentifier {
+	fn is_evm_call(_call: &RuntimeCall) -> bool {
+		false
+	}
+}
+
 impl dispatcher::Config for Test {
 	type RuntimeCall = RuntimeCall;
 	type RuntimeEvent = RuntimeEvent;
@@ -112,6 +119,7 @@ impl dispatcher::Config for Test {
 	type TreasuryAccount = TreasuryAccount;
 	type DefaultAaveManagerAccount = TreasuryAccount;
 	type WeightInfo = ();
+	type EvmCallIdentifier = EvmCallIdentifier;
 	type GasWeightMapping = MockGasWeightMapping;
 }
 
@@ -207,6 +215,7 @@ impl<T: Config> Inspect for DummyRegistry<T> {
 	}
 }
 
+use hydradx_traits::evm::MaybeEvmCall;
 #[cfg(feature = "runtime-benchmarks")]
 use hydradx_traits::Create as CreateRegistry;
 #[cfg(feature = "runtime-benchmarks")]

runtime/hydradx/src/evm/runner.rs

@@ -28,7 +28,9 @@ use fp_evm::{Account, TransactionValidationError};
 use frame_support::traits::Get;
 use hydradx_traits::AccountFeeCurrencyBalanceInCurrency;
 use pallet_evm::runner::Runner;
-use pallet_evm::{AccountProvider, AddressMapping, CallInfo, Config, CreateInfo, FeeCalculator, RunnerError};
+use pallet_evm::{
+	AccountProvider, AddressMapping, CallInfo, Config, CreateInfo, ExitReason, ExitSucceed, FeeCalculator, RunnerError,
+};
 use pallet_genesis_history::migration::Weight;
 use primitive_types::{H160, H256, U256};
 use primitives::{AssetId, Balance};
@@ -39,7 +41,7 @@ pub struct WrapRunner<T, R, B>(sp_std::marker::PhantomData<(T, R, B)>);
 
 impl<T, R, B> Runner<T> for WrapRunner<T, R, B>
 where
-	T: Config,
+	T: Config + pallet_dispatcher::Config,
 	R: Runner<T>,
 	<R as pallet_evm::Runner<T>>::Error: core::convert::From<TransactionValidationError>,
 	B: AccountFeeCurrencyBalanceInCurrency<AssetId, T::AccountId, Output = (Balance, Weight)>,
@@ -143,7 +145,7 @@ where
 			)?;
 		}
 		// Validated, flag set to false
-		R::call(
+		let result = R::call(
 			source,
 			target,
 			input,
@@ -158,7 +160,13 @@ where
 			weight_limit,
 			proof_size_base_cost,
 			config,
-		)
+		)?;
+
+		let CallInfo { exit_reason, .. } = &result;
+		let call_succeeded = matches!(exit_reason, ExitReason::Succeed(ExitSucceed::Returned));
+		pallet_dispatcher::Pallet::<T>::set_last_evm_call_failed(!call_succeeded);
+
+		Ok(result)
 	}
 
 	fn create(

runtime/hydradx/src/governance/mod.rs

@@ -46,6 +46,7 @@ use frame_support::{
 	PalletId,
 };
 use frame_system::{EnsureRoot, EnsureRootWithSuccess};
+use hydradx_traits::evm::MaybeEvmCall;
 use pallet_collective::EnsureProportionAtLeast;
 use primitives::constants::{currency::DOLLARS, time::DAYS};
 use sp_arithmetic::Perbill;
@@ -236,13 +237,25 @@ parameter_types! {
 	pub const AaveManagerAccount: AccountId = AccountId::new(hex!("aa7e0000000000000000000000000000000aa7e0000000000000000000000000"));
 }
 
+pub struct EvmCallChecker;
+impl MaybeEvmCall<RuntimeCall> for EvmCallChecker {
+	fn is_evm_call(call: &RuntimeCall) -> bool {
+		if let RuntimeCall::EVM(pallet_evm::Call::call { .. }) = call {
+			true
+		} else {
+			false
+		}
+	}
+}
+
 impl pallet_dispatcher::Config for Runtime {
-	type WeightInfo = weights::pallet_dispatcher::HydraWeight<Runtime>;
-	type RuntimeCall = RuntimeCall;
 	type RuntimeEvent = RuntimeEvent;
+	type RuntimeCall = RuntimeCall;
+	type EvmCallIdentifier = EvmCallChecker;
 	type TreasuryManagerOrigin = EitherOf<EnsureRoot<AccountId>, Treasurer>;
 	type AaveManagerOrigin = EitherOf<EnsureRoot<AccountId>, EconomicParameters>;
 	type TreasuryAccount = TreasuryAccount;
 	type DefaultAaveManagerAccount = AaveManagerAccount;
 	type GasWeightMapping = evm::FixedHydraGasWeightMapping<Runtime>;
+	type WeightInfo = weights::pallet_dispatcher::HydraWeight<Runtime>;
 }

traits/src/evm.rs

@@ -68,6 +68,10 @@ pub trait EVM<EvmResult> {
 	fn view(context: CallContext, data: Vec<u8>, gas: u64) -> EvmResult;
 }
 
+pub trait MaybeEvmCall<RuntimeCall> {
+	fn is_evm_call(call: &RuntimeCall) -> bool;
+}
+
 /// ERC20 interface adapter
 pub trait ERC20 {
 	type Balance;