Remove pallet-getter usage from pallet-transaction-payment (parityt…

…ech#4970)

As per paritytech#3326, removes usage of the `pallet::getter` macro from the
`transaction-payment` pallet. The syntax `StorageItem::<T, I>::get()`
should be used instead.

Also, adds public functions for compatibility.

NOTE: The `Releases` enum has been made public to transition
`StorageVersion` from `pub(super) type` to `pub type`.

cc @muraca

polkadot address: 5GsLutpKjbzsbTphebs9Uy4YK6gTN47MAaz6njPktidjR5cp

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

prdoc/pr_4970.prdoc

@@ -0,0 +1,14 @@
+# Schema: Polkadot SDK PRDoc Schema (prdoc) v1.0.0
+# See doc at https://raw.githubusercontent.com/paritytech/polkadot-sdk/master/prdoc/schema_user.json
+
+title: "Remove `pallet::getter` usage from the transaction-payment pallet"
+
+doc:
+  - audience: Runtime Dev
+    description: |
+      This PR removes the `pallet::getter`s from `pallet-transaction-payment`.
+      The syntax `StorageItem::<T, I>::get()` should be used instead.
+
+crates:
+  - name: pallet-transaction-payment
+    bump: minor

substrate/frame/transaction-payment/src/lib.rs

@@ -207,7 +207,7 @@ where
 		// the computed ratio is only among the normal class.
 		let normal_max_weight =
 			weights.get(DispatchClass::Normal).max_total.unwrap_or(weights.max_block);
-		let current_block_weight = <frame_system::Pallet<T>>::block_weight();
+		let current_block_weight = frame_system::Pallet::<T>::block_weight();
 		let normal_block_weight =
 			current_block_weight.get(DispatchClass::Normal).min(normal_max_weight);
 
@@ -291,7 +291,7 @@ where
 
 /// Storage releases of the pallet.
 #[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
-enum Releases {
+pub enum Releases {
 	/// Original version of the pallet.
 	V1Ancient,
 	/// One that bumps the usage to FixedU128 from FixedI128.
@@ -394,12 +394,11 @@ pub mod pallet {
 	}
 
 	#[pallet::storage]
-	#[pallet::getter(fn next_fee_multiplier)]
 	pub type NextFeeMultiplier<T: Config> =
 		StorageValue<_, Multiplier, ValueQuery, NextFeeMultiplierOnEmpty>;
 
 	#[pallet::storage]
-	pub(super) type StorageVersion<T: Config> = StorageValue<_, Releases, ValueQuery>;
+	pub type StorageVersion<T: Config> = StorageValue<_, Releases, ValueQuery>;
 
 	#[pallet::genesis_config]
 	pub struct GenesisConfig<T: Config> {
@@ -433,7 +432,7 @@ pub mod pallet {
 	#[pallet::hooks]
 	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
 		fn on_finalize(_: frame_system::pallet_prelude::BlockNumberFor<T>) {
-			<NextFeeMultiplier<T>>::mutate(|fm| {
+			NextFeeMultiplier::<T>::mutate(|fm| {
 				*fm = T::FeeMultiplierUpdate::convert(*fm);
 			});
 		}
@@ -471,7 +470,7 @@ pub mod pallet {
 			let min_value = T::FeeMultiplierUpdate::min();
 			let target = target + addition;
 
-			<frame_system::Pallet<T>>::set_block_consumed_resources(target, 0);
+			frame_system::Pallet::<T>::set_block_consumed_resources(target, 0);
 			let next = T::FeeMultiplierUpdate::convert(min_value);
 			assert!(
 				next > min_value,
@@ -484,6 +483,11 @@ pub mod pallet {
 }
 
 impl<T: Config> Pallet<T> {
+	/// Public function to access the next fee multiplier.
+	pub fn next_fee_multiplier() -> Multiplier {
+		NextFeeMultiplier::<T>::get()
+	}
+
 	/// Query the data that we know about the fee of a given `call`.
 	///
 	/// This pallet is not and cannot be aware of the internals of a signed extension, for example
@@ -633,7 +637,7 @@ impl<T: Config> Pallet<T> {
 		if pays_fee == Pays::Yes {
 			// the adjustable part of the fee.
 			let unadjusted_weight_fee = Self::weight_to_fee(weight);
-			let multiplier = Self::next_fee_multiplier();
+			let multiplier = NextFeeMultiplier::<T>::get();
 			// final adjusted weight fee.
 			let adjusted_weight_fee = multiplier.saturating_mul_int(unadjusted_weight_fee);
 
@@ -675,7 +679,7 @@ where
 	/// share that the weight contributes to the overall fee of a transaction. It is mainly
 	/// for informational purposes and not used in the actual fee calculation.
 	fn convert(weight: Weight) -> BalanceOf<T> {
-		<NextFeeMultiplier<T>>::get().saturating_mul_int(Self::weight_to_fee(weight))
+		NextFeeMultiplier::<T>::get().saturating_mul_int(Self::weight_to_fee(weight))
 	}
 }
 

substrate/frame/transaction-payment/src/tests.rs

@@ -180,7 +180,7 @@ fn signed_extension_transaction_payment_multiplied_refund_works() {
 		.build()
 		.execute_with(|| {
 			let len = 10;
-			<NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(3, 2));
+			NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(3, 2));
 
 			let pre = ChargeTransactionPayment::<Runtime>::from(5 /* tipped */)
 				.pre_dispatch(&2, CALL, &info_from_weight(Weight::from_parts(100, 0)), len)
@@ -270,7 +270,7 @@ fn signed_ext_length_fee_is_also_updated_per_congestion() {
 		.build()
 		.execute_with(|| {
 			// all fees should be x1.5
-			<NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(3, 2));
+			NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(3, 2));
 			let len = 10;
 
 			assert_ok!(ChargeTransactionPayment::<Runtime>::from(10) // tipped
@@ -305,7 +305,7 @@ fn query_info_and_fee_details_works() {
         .build()
         .execute_with(|| {
             // all fees should be x1.5
-            <NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(3, 2));
+            NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(3, 2));
 
             assert_eq!(
                 TransactionPayment::query_info(xt.clone(), len),
@@ -362,7 +362,7 @@ fn query_call_info_and_fee_details_works() {
         .build()
         .execute_with(|| {
             // all fees should be x1.5
-            <NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(3, 2));
+            NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(3, 2));
 
             assert_eq!(
                 TransactionPayment::query_call_info(call.clone(), len),
@@ -401,7 +401,7 @@ fn compute_fee_works_without_multiplier() {
 		.build()
 		.execute_with(|| {
 			// Next fee multiplier is zero
-			assert_eq!(<NextFeeMultiplier<Runtime>>::get(), Multiplier::one());
+			assert_eq!(NextFeeMultiplier::<Runtime>::get(), Multiplier::one());
 
 			// Tip only, no fees works
 			let dispatch_info = DispatchInfo {
@@ -440,7 +440,7 @@ fn compute_fee_works_with_multiplier() {
 		.build()
 		.execute_with(|| {
 			// Add a next fee multiplier. Fees will be x3/2.
-			<NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(3, 2));
+			NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(3, 2));
 			// Base fee is unaffected by multiplier
 			let dispatch_info = DispatchInfo {
 				weight: Weight::from_parts(0, 0),
@@ -472,7 +472,7 @@ fn compute_fee_works_with_negative_multiplier() {
 		.build()
 		.execute_with(|| {
 			// Add a next fee multiplier. All fees will be x1/2.
-			<NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(1, 2));
+			NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(1, 2));
 
 			// Base fee is unaffected by multiplier.
 			let dispatch_info = DispatchInfo {
@@ -637,7 +637,7 @@ fn refund_consistent_with_actual_weight() {
 			let len = 10;
 			let tip = 5;
 
-			<NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(5, 4));
+			NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(5, 4));
 
 			let pre = ChargeTransactionPayment::<Runtime>::from(tip)
 				.pre_dispatch(&2, CALL, &info, len)
@@ -797,7 +797,7 @@ fn post_info_can_change_pays_fee() {
 			let len = 10;
 			let tip = 5;
 
-			<NextFeeMultiplier<Runtime>>::put(Multiplier::saturating_from_rational(5, 4));
+			NextFeeMultiplier::<Runtime>::put(Multiplier::saturating_from_rational(5, 4));
 
 			let pre = ChargeTransactionPayment::<Runtime>::from(tip)
 				.pre_dispatch(&2, CALL, &info, len)
@@ -829,7 +829,7 @@ fn genesis_config_works() {
 		.build()
 		.execute_with(|| {
 			assert_eq!(
-				<NextFeeMultiplier<Runtime>>::get(),
+				NextFeeMultiplier::<Runtime>::get(),
 				Multiplier::saturating_from_integer(100)
 			);
 		});
@@ -838,6 +838,6 @@ fn genesis_config_works() {
 #[test]
 fn genesis_default_works() {
 	ExtBuilder::default().build().execute_with(|| {
-		assert_eq!(<NextFeeMultiplier<Runtime>>::get(), Multiplier::saturating_from_integer(1));
+		assert_eq!(NextFeeMultiplier::<Runtime>::get(), Multiplier::saturating_from_integer(1));
 	});
 }