use complex transactions on RBH/WBH bridge hubs (#1893)

bridges/relays/client-bridge-hub-wococo/src/lib.rs

@@ -20,8 +20,9 @@ use bp_bridge_hub_wococo::{PolkadotSignedExtension, AVERAGE_BLOCK_INTERVAL};
 use bp_messages::MessageNonce;
 use codec::Encode;
 use relay_substrate_client::{
-	Chain, ChainWithBalances, ChainWithMessages, ChainWithTransactions, Error as SubstrateError,
-	SignParam, UnderlyingChainProvider, UnsignedTransaction,
+	Chain, ChainWithBalances, ChainWithMessages, ChainWithTransactions, ChainWithUtilityPallet,
+	Error as SubstrateError, MockedRuntimeUtilityPallet, SignParam, UnderlyingChainProvider,
+	UnsignedTransaction,
 };
 use sp_core::{storage::StorageKey, Pair};
 use sp_runtime::{generic::SignedPayload, traits::IdentifyAccount};
@@ -56,6 +57,10 @@ impl ChainWithBalances for BridgeHubWococo {
 	}
 }
 
+impl ChainWithUtilityPallet for BridgeHubWococo {
+	type UtilityPallet = MockedRuntimeUtilityPallet<runtime::Call>;
+}
+
 impl ChainWithTransactions for BridgeHubWococo {
 	type AccountKeyPair = sp_core::sr25519::Pair;
 	type SignedTransaction = runtime::UncheckedExtrinsic;

bridges/relays/client-bridge-hub-wococo/src/runtime_wrapper.rs

@@ -23,7 +23,7 @@ use bp_bridge_hub_wococo::SignedExtension;
 pub use bp_header_chain::BridgeGrandpaCallOf;
 pub use bp_parachains::BridgeParachainCall;
 pub use bridge_runtime_common::messages::BridgeMessagesCallOf;
-pub use relay_substrate_client::calls::SystemCall;
+pub use relay_substrate_client::calls::{SystemCall, UtilityCall};
 
 /// Unchecked BridgeHubWococo extrinsic.
 pub type UncheckedExtrinsic = bp_bridge_hub_wococo::UncheckedExtrinsic<Call, SignedExtension>;
@@ -47,6 +47,9 @@ pub enum Call {
 	#[cfg(test)]
 	#[codec(index = 0)]
 	System(SystemCall),
+	/// Utility pallet.
+	#[codec(index = 40)]
+	Utility(UtilityCall<Call>),
 
 	/// Rococo bridge pallet.
 	#[codec(index = 43)]
@@ -59,6 +62,12 @@ pub enum Call {
 	BridgeRococoMessages(BridgeRococoMessagesCall),
 }
 
+impl From<UtilityCall<Call>> for Call {
+	fn from(call: UtilityCall<Call>) -> Call {
+		Call::Utility(call)
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use super::*;