feat: pallet asset-rate

Cargo.toml

@@ -166,6 +166,7 @@ members = [
 	"frame/transaction-payment/rpc/runtime-api",
 	"frame/transaction-storage",
 	"frame/treasury",
+	"frame/asset-rate",
 	"frame/tips",
 	"frame/uniques",
 	"frame/utility",

bin/node/runtime/Cargo.toml

@@ -53,6 +53,7 @@ frame-election-provider-support = { version = "4.0.0-dev", default-features = fa
 frame-system-rpc-runtime-api = { version = "4.0.0-dev", default-features = false, path = "../../../frame/system/rpc/runtime-api/" }
 frame-try-runtime = { version = "0.10.0-dev", default-features = false, path = "../../../frame/try-runtime", optional = true }
 pallet-alliance = { version = "4.0.0-dev", default-features = false, path = "../../../frame/alliance" }
+pallet-asset-rate = { version = "4.0.0-dev", default-features = false, path = "../../../frame/asset-rate" }
 pallet-assets = { version = "4.0.0-dev", default-features = false, path = "../../../frame/assets" }
 pallet-authority-discovery = { version = "4.0.0-dev", default-features = false, path = "../../../frame/authority-discovery" }
 pallet-authorship = { version = "4.0.0-dev", default-features = false, path = "../../../frame/authorship" }
@@ -201,6 +202,7 @@ std = [
 	"pallet-transaction-payment/std",
 	"pallet-transaction-storage/std",
 	"pallet-treasury/std",
+	"pallet-asset-rate/std",
 	"sp-transaction-pool/std",
 	"pallet-utility/std",
 	"sp-version/std",
@@ -272,6 +274,7 @@ runtime-benchmarks = [
 	"pallet-tips/runtime-benchmarks",
 	"pallet-transaction-storage/runtime-benchmarks",
 	"pallet-treasury/runtime-benchmarks",
+	"pallet-asset-rate/runtime-benchmarks",
 	"pallet-utility/runtime-benchmarks",
 	"pallet-uniques/runtime-benchmarks",
 	"pallet-nfts/runtime-benchmarks",
@@ -333,6 +336,7 @@ try-runtime = [
 	"pallet-timestamp/try-runtime",
 	"pallet-tips/try-runtime",
 	"pallet-treasury/try-runtime",
+	"pallet-asset-rate/try-runtime",
 	"pallet-utility/try-runtime",
 	"pallet-transaction-payment/try-runtime",
 	"pallet-asset-tx-payment/try-runtime",

bin/node/runtime/src/lib.rs

@@ -1131,6 +1131,17 @@ impl pallet_treasury::Config for Runtime {
 	type SpendOrigin = EnsureWithSuccess<EnsureRoot<AccountId>, AccountId, MaxBalance>;
 }
 
+impl pallet_asset_rate::Config for Runtime {
+	type CreateOrigin = EnsureRoot<AccountId>;
+	type RemoveOrigin = EnsureRoot<AccountId>;
+	type UpdateOrigin = EnsureRoot<AccountId>;
+	type Balance = Balance;
+	type Currency = Balances;
+	type AssetId = u32;
+	type RuntimeEvent = RuntimeEvent;
+	type WeightInfo = pallet_asset_rate::weights::SubstrateWeight<Runtime>;
+}
+
 parameter_types! {
 	pub const BountyCuratorDeposit: Permill = Permill::from_percent(50);
 	pub const BountyValueMinimum: Balance = 5 * DOLLARS;
@@ -1765,6 +1776,7 @@ construct_runtime!(
 		TechnicalMembership: pallet_membership::<Instance1>,
 		Grandpa: pallet_grandpa,
 		Treasury: pallet_treasury,
+		AssetRate: pallet_asset_rate,
 		Contracts: pallet_contracts,
 		Sudo: pallet_sudo,
 		ImOnline: pallet_im_online,
@@ -1922,6 +1934,7 @@ mod benches {
 		[pallet_tips, Tips]
 		[pallet_transaction_storage, TransactionStorage]
 		[pallet_treasury, Treasury]
+		[pallet_asset_rate, AssetRate]
 		[pallet_uniques, Uniques]
 		[pallet_nfts, Nfts]
 		[pallet_utility, Utility]

frame/asset-rate/Cargo.toml

@@ -0,0 +1,52 @@
+[package]
+name = "pallet-asset-rate"
+version = "4.0.0-dev"
+description = "Whitelist non-native assets for treasury spending and provide conversion to native balance"
+authors = ["William Freudenberger <[email protected]>"]
+homepage = "https://substrate.io"
+edition = "2021"
+license = "Apache-2.0"
+repository = "https://github.com/paritytech/substrate/"
+publish = false
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "3.2.2", default-features = false, features = [
+	"derive",
+] }
+scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
+frame-benchmarking = { version = "4.0.0-dev", default-features = false, optional = true, path = "../benchmarking" }
+frame-support = { version = "4.0.0-dev", default-features = false, path = "../support" }
+frame-system = { version = "4.0.0-dev", default-features = false, path = "../system" }
+sp-runtime = { version = "7.0.0", default-features = false, path = "../../primitives/runtime" }
+sp-std = { version = "5.0.0", default-features = false, path = "../../primitives/std" }
+
+[dev-dependencies]
+pallet-balances = { version = "4.0.0-dev", path = "../balances" }
+sp-core = { version = "7.0.0", path = "../../primitives/core" }
+sp-io = { version = "7.0.0", path = "../../primitives/io" }
+
+[features]
+default = ["std"]
+std = [
+	"codec/std",
+	"frame-benchmarking?/std",
+	"frame-support/std",
+	"frame-system/std",
+	"scale-info/std",
+	"sp-runtime/std",
+	"sp-std/std",
+]
+runtime-benchmarks = [
+	"frame-benchmarking/runtime-benchmarks",
+	"frame-support/runtime-benchmarks",
+	"frame-system/runtime-benchmarks",
+	"sp-runtime/runtime-benchmarks",
+]
+try-runtime = [
+	"frame-support/try-runtime",
+	"frame-system/try-runtime",
+	"sp-runtime/try-runtime",
+]

frame/asset-rate/src/benchmarking.rs

@@ -0,0 +1,86 @@
+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! The crate's benchmarks.
+
+use super::*;
+use crate::{pallet as pallet_asset_rate, Pallet as AssetRate};
+
+use frame_benchmarking::v2::*;
+use frame_support::assert_ok;
+use frame_system::RawOrigin;
+
+const ASSET_ID: u32 = 1;
+
+fn default_conversion_rate() -> FixedU128 {
+	FixedU128::from_u32(1u32)
+}
+
+#[benchmarks(where <T as Config>::AssetId: From<u32>)]
+mod benchmarks {
+	use super::*;
+
+	#[benchmark]
+	fn create() -> Result<(), BenchmarkError> {
+		let asset_id: T::AssetId = ASSET_ID.into();
+		#[extrinsic_call]
+		_(RawOrigin::Root, asset_id, default_conversion_rate());
+
+		assert_eq!(
+			pallet_asset_rate::ConversionRateToNative::<T>::get(asset_id),
+			Some(default_conversion_rate())
+		);
+		Ok(())
+	}
+
+	#[benchmark]
+	fn update() -> Result<(), BenchmarkError> {
+		let asset_id: T::AssetId = ASSET_ID.into();
+		assert_ok!(AssetRate::<T>::create(
+			RawOrigin::Root.into(),
+			asset_id,
+			default_conversion_rate()
+		));
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, asset_id, FixedU128::from_u32(2));
+
+		assert_eq!(
+			pallet_asset_rate::ConversionRateToNative::<T>::get(asset_id),
+			Some(FixedU128::from_u32(2))
+		);
+		Ok(())
+	}
+
+	#[benchmark]
+	fn remove() -> Result<(), BenchmarkError> {
+		let asset_id: T::AssetId = ASSET_ID.into();
+		assert_ok!(AssetRate::<T>::create(
+			RawOrigin::Root.into(),
+			ASSET_ID.into(),
+			default_conversion_rate()
+		));
+
+		#[extrinsic_call]
+		_(RawOrigin::Root, asset_id);
+
+		assert!(pallet_asset_rate::ConversionRateToNative::<T>::get(asset_id).is_none());
+		Ok(())
+	}
+
+	impl_benchmark_test_suite! { AssetRate, crate::mock::new_test_ext(), crate::mock::Test }
+}