Limit max call size of Rialto/Millau runtimes (#1187)

* max call size <= 230 bytes

* fix benchmarks

bridges/primitives/token-swap/Cargo.toml

@@ -13,6 +13,7 @@ codec = { package = "parity-scale-codec", version = "2.0.0", default-features =
 
 frame-support = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-core = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 
 [features]
 default = ["std"]
@@ -20,4 +21,5 @@ std = [
 	"codec/std",
 	"frame-support/std",
 	"sp-core/std",
+	"sp-std/std",
 ]

bridges/primitives/token-swap/src/lib.rs

@@ -17,8 +17,9 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use codec::{Decode, Encode};
-use frame_support::RuntimeDebug;
+use frame_support::{weights::Weight, RuntimeDebug};
 use sp_core::U256;
+use sp_std::vec::Vec;
 
 /// Pending token swap state.
 #[derive(Encode, Decode, Clone, RuntimeDebug, PartialEq, Eq)]
@@ -82,3 +83,26 @@ pub struct TokenSwap<ThisBlockNumber, ThisBalance, ThisAccountId, BridgedBalance
 	/// `target_balance_at_bridged_chain`.
 	pub target_account_at_bridged_chain: BridgedAccountId,
 }
+
+/// SCALE-encoded `Currency::transfer` call on the bridged chain.
+pub type RawBridgedTransferCall = Vec<u8>;
+
+/// Token swap creation parameters.
+#[derive(Encode, Decode, Clone, RuntimeDebug, PartialEq, Eq)]
+pub struct TokenSwapCreation<BridgedAccountPublic, ThisChainBalance, BridgedAccountSignature> {
+	/// Public key of the `target_account_at_bridged_chain` account used to verify
+	/// `bridged_currency_transfer_signature`.
+	pub target_public_at_bridged_chain: BridgedAccountPublic,
+	/// Fee that the `source_account_at_this_chain` is ready to pay for the tokens
+	/// transfer message delivery and dispatch.
+	pub swap_delivery_and_dispatch_fee: ThisChainBalance,
+	/// Specification version of the Bridged chain.
+	pub bridged_chain_spec_version: u32,
+	/// SCALE-encoded tokens transfer call at the Bridged chain.
+	pub bridged_currency_transfer: RawBridgedTransferCall,
+	/// Dispatch weight of the tokens transfer call at the Bridged chain.
+	pub bridged_currency_transfer_weight: Weight,
+	/// The signature of the `target_account_at_bridged_chain` for the message
+	/// returned by the `pallet_bridge_dispatch::account_ownership_digest()` function call.
+	pub bridged_currency_transfer_signature: BridgedAccountSignature,
+}