diff --git a/bin/node-template/runtime/src/lib.rs b/bin/node-template/runtime/src/lib.rs index e28a3bb2adb9d..e9c2800ffa3f5 100644 --- a/bin/node-template/runtime/src/lib.rs +++ b/bin/node-template/runtime/src/lib.rs @@ -14,7 +14,9 @@ use sp_consensus_aura::sr25519::AuthorityId as AuraId; use sp_core::{crypto::KeyTypeId, OpaqueMetadata}; use sp_runtime::{ create_runtime_str, generic, impl_opaque_keys, - traits::{AccountIdLookup, BlakeTwo256, Block as BlockT, IdentifyAccount, NumberFor, Verify}, + traits::{ + AccountIdLookup, BlakeTwo256, Block as BlockT, IdentifyAccount, NumberFor, One, Verify, + }, transaction_validity::{TransactionSource, TransactionValidity}, ApplyExtrinsicResult, MultiSignature, }; @@ -38,7 +40,7 @@ pub use frame_support::{ pub use frame_system::Call as SystemCall; pub use pallet_balances::Call as BalancesCall; pub use pallet_timestamp::Call as TimestampCall; -use pallet_transaction_payment::CurrencyAdapter; +use pallet_transaction_payment::{ConstFeeMultiplier, CurrencyAdapter, Multiplier}; #[cfg(any(feature = "std", test))] pub use sp_runtime::BuildStorage; pub use sp_runtime::{Perbill, Permill}; @@ -251,13 +253,17 @@ impl pallet_balances::Config for Runtime { type WeightInfo = pallet_balances::weights::SubstrateWeight; } +parameter_types! { + pub FeeMultiplier: Multiplier = Multiplier::one(); +} + impl pallet_transaction_payment::Config for Runtime { type Event = Event; type OnChargeTransaction = CurrencyAdapter; type OperationalFeeMultiplier = ConstU8<5>; type WeightToFee = IdentityFee; type LengthToFee = IdentityFee; - type FeeMultiplierUpdate = (); + type FeeMultiplierUpdate = ConstFeeMultiplier; } impl pallet_sudo::Config for Runtime { diff --git a/frame/transaction-payment/src/lib.rs b/frame/transaction-payment/src/lib.rs index cbdc9dcb1e846..b3c53cc048bad 100644 --- a/frame/transaction-payment/src/lib.rs +++ b/frame/transaction-payment/src/lib.rs @@ -226,6 +226,30 @@ where } } +/// A struct to make the fee multiplier a constant +pub struct ConstFeeMultiplier>(sp_std::marker::PhantomData); + +impl> MultiplierUpdate for ConstFeeMultiplier { + fn min() -> Multiplier { + M::get() + } + fn target() -> Perquintill { + Default::default() + } + fn variability() -> Multiplier { + Default::default() + } +} + +impl Convert for ConstFeeMultiplier +where + M: Get, +{ + fn convert(_previous: Multiplier) -> Multiplier { + Self::min() + } +} + /// Storage releases of the pallet. #[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)] enum Releases { @@ -371,7 +395,8 @@ pub mod pallet { // add 1 percent; let addition = target / 100; if addition == Weight::zero() { - // this is most likely because in a test setup we set everything to (). + // this is most likely because in a test setup we set everything to () + // or to `ConstFeeMultiplier`. return }