Benchmark for message delivery confirmation transaction (#570)

* receive_delivery_proof benchmarks

* fix compilation

* Update modules/message-lane/src/benchmarking.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update modules/message-lane/src/benchmarking.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update modules/message-lane/src/benchmarking.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update modules/message-lane/src/benchmarking.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* Update modules/message-lane/src/benchmarking.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

bridges/bin/rialto/runtime/src/lib.rs

@@ -802,6 +802,7 @@ impl_runtime_apis! {
 			use pallet_message_lane::benchmarking::{
 				Module as MessageLaneBench,
 				Config as MessageLaneConfig,
+				MessageDeliveryProofParams as MessageLaneMessageDeliveryProofParams,
 				MessageParams as MessageLaneMessageParams,
 				MessageProofParams as MessageLaneMessageProofParams,
 			};
@@ -811,6 +812,10 @@ impl_runtime_apis! {
 					Default::default()
 				}
 
+				fn account_balance(account: &Self::AccountId) -> Self::OutboundMessageFee {
+					pallet_balances::Module::<Runtime>::free_balance(account)
+				}
+
 				fn endow_account(account: &Self::AccountId) {
 					pallet_balances::Module::<Runtime>::make_free_balance_be(
 						account,
@@ -913,6 +918,34 @@ impl_runtime_apis! {
 						}.encode(),
 					)
 				}
+
+				fn prepare_message_delivery_proof(
+					params: MessageLaneMessageDeliveryProofParams<Self::AccountId>,
+				) -> millau_messages::FromMillauMessagesDeliveryProof {
+					use crate::millau_messages::{Millau, WithMillauMessageBridge};
+					use bridge_runtime_common::{
+						messages::ChainWithMessageLanes,
+						messages_benchmarking::prepare_message_delivery_proof,
+					};
+					use sp_runtime::traits::Header;
+
+					prepare_message_delivery_proof::<WithMillauMessageBridge, bp_millau::Hasher, Runtime, _, _>(
+						params,
+						|lane_id| pallet_message_lane::storage_keys::inbound_lane_data_key::<
+							Runtime,
+							<Millau as ChainWithMessageLanes>::MessageLaneInstance,
+						>(
+							&lane_id,
+						).0,
+						|state_root| bp_millau::Header::new(
+							0,
+							Default::default(),
+							state_root,
+							Default::default(),
+							Default::default(),
+						),
+					)
+				}
 			}
 
 			add_benchmark!(params, batches, pallet_bridge_eth_poa, BridgeKovan);

bridges/bin/rialto/runtime/src/millau_messages.rs

@@ -74,7 +74,8 @@ pub type FromMillauMessageDispatch = messages::target::FromBridgedChainMessageDi
 pub type FromMillauMessagesProof = messages::target::FromBridgedChainMessagesProof<WithMillauMessageBridge>;
 
 /// Messages delivery proof for Rialto -> Millau messages.
-type ToMillauMessagesDeliveryProof = messages::source::FromBridgedChainMessagesDeliveryProof<WithMillauMessageBridge>;
+pub type FromMillauMessagesDeliveryProof =
+	messages::source::FromBridgedChainMessagesDeliveryProof<WithMillauMessageBridge>;
 
 /// Millau <-> Rialto message bridge.
 #[derive(RuntimeDebug, Clone, Copy)]
@@ -168,7 +169,7 @@ impl TargetHeaderChain<ToMillauMessagePayload, bp_millau::AccountId> for Millau
 	// - hash of the header this proof has been created with;
 	// - the storage proof of one or several keys;
 	// - id of the lane we prove state of.
-	type MessagesDeliveryProof = ToMillauMessagesDeliveryProof;
+	type MessagesDeliveryProof = FromMillauMessagesDeliveryProof;
 
 	fn verify_message(payload: &ToMillauMessagePayload) -> Result<(), Self::Error> {
 		messages::source::verify_chain_message::<WithMillauMessageBridge>(payload)