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[FRAME] Parameters pallet (paritytech#2061)
Closes paritytech#169 Fork of the `orml-parameters-pallet` as introduced by open-web3-stack/open-runtime-module-library#927 (cc @xlc) It greatly changes how the macros work, but keeps the pallet the same. The downside of my code is now that it does only support constant keys in the form of types, not value-bearing keys. I think this is an acceptable trade off, give that it can be used by *any* pallet without any changes. The pallet allows to dynamically set parameters that can be used in pallet configs while also restricting the updating on a per-key basis. The rust-docs contains a complete example. Changes: - Add `parameters-pallet` - Use in the kitchensink as demonstration - Add experimental attribute to define dynamic params in the runtime. - Adding a bunch of traits to `frame_support::traits::dynamic_params` that can be re-used by the ORML macros ## Example First to define the parameters in the runtime file. The syntax is very explicit about the codec index and errors if there is no. ```rust #[dynamic_params(RuntimeParameters, pallet_parameters::Parameters::<Runtime>))] pub mod dynamic_params { use super::*; #[dynamic_pallet_params] #[codec(index = 0)] pub mod storage { /// Configures the base deposit of storing some data. #[codec(index = 0)] pub static BaseDeposit: Balance = 1 * DOLLARS; /// Configures the per-byte deposit of storing some data. #[codec(index = 1)] pub static ByteDeposit: Balance = 1 * CENTS; } #[dynamic_pallet_params] #[codec(index = 1)] pub mod contracts { #[codec(index = 0)] pub static DepositPerItem: Balance = deposit(1, 0); #[codec(index = 1)] pub static DepositPerByte: Balance = deposit(0, 1); } } ``` Then the pallet is configured with the aggregate: ```rust impl pallet_parameters::Config for Runtime { type AggregratedKeyValue = RuntimeParameters; type AdminOrigin = EnsureRootWithSuccess<AccountId, ConstBool<true>>; ... } ``` And then the parameters can be used in a pallet config: ```rust impl pallet_preimage::Config for Runtime { type DepositBase = dynamic_params::storage::DepositBase; } ``` A custom origin an be defined like this: ```rust pub struct DynamicParametersManagerOrigin; impl EnsureOriginWithArg<RuntimeOrigin, RuntimeParametersKey> for DynamicParametersManagerOrigin { type Success = (); fn try_origin( origin: RuntimeOrigin, key: &RuntimeParametersKey, ) -> Result<Self::Success, RuntimeOrigin> { match key { RuntimeParametersKey::Storage(_) => { frame_system::ensure_root(origin.clone()).map_err(|_| origin)?; return Ok(()) }, RuntimeParametersKey::Contract(_) => { frame_system::ensure_root(origin.clone()).map_err(|_| origin)?; return Ok(()) }, } } #[cfg(feature = "runtime-benchmarks")] fn try_successful_origin(_key: &RuntimeParametersKey) -> Result<RuntimeOrigin, ()> { Ok(RuntimeOrigin::Root) } } ``` --------- Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Co-authored-by: Nikhil Gupta <17176722+gupnik@users.noreply.github.com> Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com> Co-authored-by: command-bot <>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,57 @@ | ||
| [package] | ||
| name = "pallet-parameters" | ||
| description = "Pallet to store and configure parameters." | ||
| repository.workspace = true | ||
| license = "Apache-2.0" | ||
| version = "0.0.1" | ||
| authors = ["Acala Developers", "Parity Technologies <admin@parity.io>"] | ||
| edition.workspace = true | ||
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| [dependencies] | ||
| codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = ["max-encoded-len"] } | ||
| scale-info = { version = "2.1.2", default-features = false, features = ["derive"] } | ||
| paste = { version = "1.0.14", default-features = false } | ||
| serde = { version = "1.0.188", features = ["derive"], optional = true } | ||
| docify = "0.2.5" | ||
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| frame-support = { path = "../support", default-features = false, features = ["experimental"] } | ||
| frame-system = { path = "../system", default-features = false } | ||
| sp-core = { path = "../../primitives/core", default-features = false } | ||
| sp-runtime = { path = "../../primitives/runtime", default-features = false } | ||
| sp-std = { path = "../../primitives/std", default-features = false } | ||
| frame-benchmarking = { path = "../benchmarking", default-features = false, optional = true } | ||
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| [dev-dependencies] | ||
| sp-core = { path = "../../primitives/core", features = ["std"] } | ||
| sp-io = { path = "../../primitives/io", features = ["std"] } | ||
| pallet-example-basic = { path = "../examples/basic", features = ["std"] } | ||
| pallet-balances = { path = "../balances", features = ["std"] } | ||
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| [features] | ||
| default = ["std"] | ||
| std = [ | ||
| "codec/std", | ||
| "frame-benchmarking?/std", | ||
| "frame-support/std", | ||
| "frame-system/std", | ||
| "scale-info/std", | ||
| "serde", | ||
| "sp-core/std", | ||
| "sp-runtime/std", | ||
| "sp-std/std", | ||
| ] | ||
| runtime-benchmarks = [ | ||
| "frame-benchmarking/runtime-benchmarks", | ||
| "frame-support/runtime-benchmarks", | ||
| "frame-system/runtime-benchmarks", | ||
| "pallet-balances/runtime-benchmarks", | ||
| "pallet-example-basic/runtime-benchmarks", | ||
| "sp-runtime/runtime-benchmarks", | ||
| ] | ||
| try-runtime = [ | ||
| "frame-support/try-runtime", | ||
| "frame-system/try-runtime", | ||
| "pallet-balances/try-runtime", | ||
| "pallet-example-basic/try-runtime", | ||
| "sp-runtime/try-runtime", | ||
| ] |
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| // This file is part of Substrate. | ||
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| // Copyright (C) Parity Technologies (UK) Ltd. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| // 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. | ||
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| //! Parameters pallet benchmarking. | ||
| #![cfg(feature = "runtime-benchmarks")] | ||
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| use super::*; | ||
| #[cfg(test)] | ||
| use crate::Pallet as Parameters; | ||
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| use frame_benchmarking::v2::*; | ||
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| #[benchmarks(where T::RuntimeParameters: Default)] | ||
| mod benchmarks { | ||
| use super::*; | ||
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| #[benchmark] | ||
| fn set_parameter() -> Result<(), BenchmarkError> { | ||
| let kv = T::RuntimeParameters::default(); | ||
| let k = kv.clone().into_parts().0; | ||
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| let origin = | ||
| T::AdminOrigin::try_successful_origin(&k).map_err(|_| BenchmarkError::Weightless)?; | ||
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| #[extrinsic_call] | ||
| _(origin as T::RuntimeOrigin, kv); | ||
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| Ok(()) | ||
| } | ||
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| impl_benchmark_test_suite! { | ||
| Parameters, | ||
| crate::tests::mock::new_test_ext(), | ||
| crate::tests::mock::Runtime, | ||
| } | ||
| } |
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