Treasury spends various asset kinds (#1333)

### Summary 

This PR introduces new dispatchables to the treasury pallet, allowing
spends of various asset types. The enhanced features of the treasury
pallet, in conjunction with the asset-rate pallet, are set up and
enabled for Westend and Rococo.

### Westend and Rococo runtimes.

Polkadot/Kusams/Rococo Treasury can accept proposals for `spends` of
various asset kinds by specifying the asset's location and ID.

#### Treasury Instance New Dispatchables:
- `spend(AssetKind, AssetBalance, Beneficiary, Option<ValidFrom>)` -
propose and approve a spend;
- `payout(SpendIndex)` - payout an approved spend or retry a failed
payout
- `check_payment(SpendIndex)` - check the status of a payout;
- `void_spend(SpendIndex)` - void previously approved spend;
> existing spend dispatchable renamed to spend_local

in this context, the `AssetKind` parameter contains the asset's location
and it's corresponding `asset_id`, for example:
`USDT` on `AssetHub`,
``` rust
location = MultiLocation(0, X1(Parachain(1000)))
asset_id = MultiLocation(0, X2(PalletInstance(50), GeneralIndex(1984)))
```

the `Beneficiary` parameter is a `MultiLocation` in the context of the
asset's location, for example
``` rust
// the Fellowship salary pallet's location / account
FellowshipSalaryPallet = MultiLocation(1, X2(Parachain(1001), PalletInstance(64)))
// or custom `AccountId`
Alice = MultiLocation(0, AccountId32(network: None, id: [1,...]))
```

the `AssetBalance` represents the amount of the `AssetKind` to be
transferred to the `Beneficiary`. For permission checks, the asset
amount is converted to the native amount and compared against the
maximum spendable amount determined by the commanding spend origin.

the `spend` dispatchable allows for batching spends with different
`ValidFrom` arguments, enabling milestone-based spending. If the
expectations tied to an approved spend are not met, it is possible to
void the spend later using the `void_spend` dispatchable.

Asset Rate Pallet provides the conversion rate from the `AssetKind` to
the native balance.

#### Asset Rate Instance Dispatchables:
- `create(AssetKind, Rate)` - initialize a conversion rate to the native
balance for the given asset
- `update(AssetKind, Rate)` - update the conversion rate to the native
balance for the given asset
- `remove(AssetKind)` - remove an existing conversion rate to the native
balance for the given asset

the pallet's dispatchables can be executed by the Root or Treasurer
origins.

### Treasury Pallet

Treasury Pallet can accept proposals for `spends` of various asset kinds
and pay them out through the implementation of the `Pay` trait.

New Dispatchables:
- `spend(Config::AssetKind, AssetBalance, Config::Beneficiary,
Option<ValidFrom>)` - propose and approve a spend;
- `payout(SpendIndex)` - payout an approved spend or retry a failed
payout;
- `check_payment(SpendIndex)` - check the status of a payout;
- `void_spend(SpendIndex)` - void previously approved spend;
> existing spend dispatchable renamed to spend_local

The parameters' types of the `spend` dispatchable exposed via the
pallet's `Config` and allows to propose and accept a spend of a certain
amount.

An approved spend can be claimed via the `payout` within the
`Config::SpendPeriod`. Clients provide an implementation of the `Pay`
trait which can pay an asset of the `AssetKind` to the `Beneficiary` in
`AssetBalance` units.

The implementation of the Pay trait might not have an immediate final
payment status, for example if implemented over `XCM` and the actual
transfer happens on a remote chain.

The `check_status` dispatchable can be executed to update the spend's
payment state and retry the `payout` if the payment has failed.

---------

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: command-bot <>
This commit is contained in:
Muharem
2023-10-07 19:32:35 +02:00
committed by GitHub
parent 5a6912606a
commit cb944dc548
32 changed files with 2213 additions and 286 deletions
@@ -17,6 +17,7 @@
pub mod frame_election_provider_support;
pub mod frame_system;
pub mod pallet_asset_rate;
pub mod pallet_bags_list;
pub mod pallet_balances;
pub mod pallet_conviction_voting;
@@ -0,0 +1,86 @@
// Copyright (C) Parity Technologies (UK) Ltd.
// This file is part of Polkadot.
// Polkadot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Polkadot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Polkadot. If not, see <http://www.gnu.org/licenses/>.
//! Autogenerated weights for `pallet_asset_rate`
//!
//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
//! DATE: 2023-07-04, STEPS: `50`, REPEAT: `2`, LOW RANGE: `[]`, HIGH RANGE: `[]`
//! WORST CASE MAP SIZE: `1000000`
//! HOSTNAME: `cob`, CPU: `<UNKNOWN>`
//! EXECUTION: None, WASM-EXECUTION: Compiled, CHAIN: Some("polkadot-dev"), DB CACHE: 1024
// Executed Command:
// ./target/debug/polkadot
// benchmark
// pallet
// --chain=polkadot-dev
// --steps=50
// --repeat=2
// --pallet=pallet_asset_rate
// --extrinsic=*
// --wasm-execution=compiled
// --heap-pages=4096
// --output=./runtime/polkadot/src/weights/
// --header=./file_header.txt
#![cfg_attr(rustfmt, rustfmt_skip)]
#![allow(unused_parens)]
#![allow(unused_imports)]
#![allow(missing_docs)]
use frame_support::{traits::Get, weights::Weight};
use core::marker::PhantomData;
/// Weight functions for `pallet_asset_rate`.
pub struct WeightInfo<T>(PhantomData<T>);
impl<T: frame_system::Config> pallet_asset_rate::WeightInfo for WeightInfo<T> {
/// Storage: AssetRate ConversionRateToNative (r:1 w:1)
/// Proof: AssetRate ConversionRateToNative (max_values: None, max_size: Some(1237), added: 3712, mode: MaxEncodedLen)
fn create() -> Weight {
// Proof Size summary in bytes:
// Measured: `42`
// Estimated: `4702`
// Minimum execution time: 67_000_000 picoseconds.
Weight::from_parts(69_000_000, 0)
.saturating_add(Weight::from_parts(0, 4702))
.saturating_add(T::DbWeight::get().reads(1))
.saturating_add(T::DbWeight::get().writes(1))
}
/// Storage: AssetRate ConversionRateToNative (r:1 w:1)
/// Proof: AssetRate ConversionRateToNative (max_values: None, max_size: Some(1237), added: 3712, mode: MaxEncodedLen)
fn update() -> Weight {
// Proof Size summary in bytes:
// Measured: `110`
// Estimated: `4702`
// Minimum execution time: 69_000_000 picoseconds.
Weight::from_parts(71_000_000, 0)
.saturating_add(Weight::from_parts(0, 4702))
.saturating_add(T::DbWeight::get().reads(1))
.saturating_add(T::DbWeight::get().writes(1))
}
/// Storage: AssetRate ConversionRateToNative (r:1 w:1)
/// Proof: AssetRate ConversionRateToNative (max_values: None, max_size: Some(1237), added: 3712, mode: MaxEncodedLen)
fn remove() -> Weight {
// Proof Size summary in bytes:
// Measured: `110`
// Estimated: `4702`
// Minimum execution time: 70_000_000 picoseconds.
Weight::from_parts(90_000_000, 0)
.saturating_add(Weight::from_parts(0, 4702))
.saturating_add(T::DbWeight::get().reads(1))
.saturating_add(T::DbWeight::get().writes(1))
}
}
@@ -17,25 +17,24 @@
//! Autogenerated weights for `pallet_treasury`
//!
//! THIS FILE WAS AUTO-GENERATED USING THE SUBSTRATE BENCHMARK CLI VERSION 4.0.0-dev
//! DATE: 2023-07-13, STEPS: `50`, REPEAT: `20`, LOW RANGE: `[]`, HIGH RANGE: `[]`
//! DATE: 2023-07-07, STEPS: `50`, REPEAT: `2`, LOW RANGE: `[]`, HIGH RANGE: `[]`
//! WORST CASE MAP SIZE: `1000000`
//! HOSTNAME: `runner-o7yfgx5n-project-163-concurrent-0`, CPU: `Intel(R) Xeon(R) CPU @ 2.60GHz`
//! EXECUTION: ``, WASM-EXECUTION: `Compiled`, CHAIN: `Some("westend-dev")`, DB CACHE: 1024
//! HOSTNAME: `cob`, CPU: `<UNKNOWN>`
//! EXECUTION: None, WASM-EXECUTION: Compiled, CHAIN: Some("rococo-dev"), DB CACHE: 1024
// Executed Command:
// target/production/polkadot
// ./target/debug/polkadot
// benchmark
// pallet
// --chain=rococo-dev
// --steps=50
// --repeat=20
// --repeat=2
// --pallet=pallet_treasury
// --extrinsic=*
// --wasm-execution=compiled
// --heap-pages=4096
// --json-file=/builds/parity/mirrors/polkadot/.git/.artifacts/bench.json
// --pallet=pallet_treasury
// --chain=westend-dev
// --output=./runtime/rococo/src/weights/
// --header=./file_header.txt
// --output=./runtime/westend/src/weights/
#![cfg_attr(rustfmt, rustfmt_skip)]
#![allow(unused_parens)]
@@ -48,103 +47,177 @@ use core::marker::PhantomData;
/// Weight functions for `pallet_treasury`.
pub struct WeightInfo<T>(PhantomData<T>);
impl<T: frame_system::Config> pallet_treasury::WeightInfo for WeightInfo<T> {
/// Storage: `Treasury::ProposalCount` (r:1 w:1)
/// Proof: `Treasury::ProposalCount` (`max_values`: Some(1), `max_size`: Some(4), added: 499, mode: `MaxEncodedLen`)
/// Storage: `Treasury::Approvals` (r:1 w:1)
/// Proof: `Treasury::Approvals` (`max_values`: Some(1), `max_size`: Some(402), added: 897, mode: `MaxEncodedLen`)
/// Storage: `Treasury::Proposals` (r:0 w:1)
/// Proof: `Treasury::Proposals` (`max_values`: None, `max_size`: Some(108), added: 2583, mode: `MaxEncodedLen`)
fn spend() -> Weight {
/// Storage: Treasury ProposalCount (r:1 w:1)
/// Proof: Treasury ProposalCount (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
/// Storage: Treasury Approvals (r:1 w:1)
/// Proof: Treasury Approvals (max_values: Some(1), max_size: Some(402), added: 897, mode: MaxEncodedLen)
/// Storage: Treasury Proposals (r:0 w:1)
/// Proof: Treasury Proposals (max_values: None, max_size: Some(108), added: 2583, mode: MaxEncodedLen)
fn spend_local() -> Weight {
// Proof Size summary in bytes:
// Measured: `6`
// Measured: `42`
// Estimated: `1887`
// Minimum execution time: 13_644_000 picoseconds.
Weight::from_parts(13_988_000, 0)
// Minimum execution time: 177_000_000 picoseconds.
Weight::from_parts(191_000_000, 0)
.saturating_add(Weight::from_parts(0, 1887))
.saturating_add(T::DbWeight::get().reads(2))
.saturating_add(T::DbWeight::get().writes(3))
}
/// Storage: `Treasury::ProposalCount` (r:1 w:1)
/// Proof: `Treasury::ProposalCount` (`max_values`: Some(1), `max_size`: Some(4), added: 499, mode: `MaxEncodedLen`)
/// Storage: `Treasury::Proposals` (r:0 w:1)
/// Proof: `Treasury::Proposals` (`max_values`: None, `max_size`: Some(108), added: 2583, mode: `MaxEncodedLen`)
/// Storage: Treasury ProposalCount (r:1 w:1)
/// Proof: Treasury ProposalCount (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
/// Storage: Treasury Proposals (r:0 w:1)
/// Proof: Treasury Proposals (max_values: None, max_size: Some(108), added: 2583, mode: MaxEncodedLen)
fn propose_spend() -> Weight {
// Proof Size summary in bytes:
// Measured: `107`
// Measured: `143`
// Estimated: `1489`
// Minimum execution time: 26_304_000 picoseconds.
Weight::from_parts(26_850_000, 0)
// Minimum execution time: 354_000_000 picoseconds.
Weight::from_parts(376_000_000, 0)
.saturating_add(Weight::from_parts(0, 1489))
.saturating_add(T::DbWeight::get().reads(1))
.saturating_add(T::DbWeight::get().writes(2))
}
/// Storage: `Treasury::Proposals` (r:1 w:1)
/// Proof: `Treasury::Proposals` (`max_values`: None, `max_size`: Some(108), added: 2583, mode: `MaxEncodedLen`)
/// Storage: `System::Account` (r:1 w:1)
/// Proof: `System::Account` (`max_values`: None, `max_size`: Some(128), added: 2603, mode: `MaxEncodedLen`)
/// Storage: Treasury Proposals (r:1 w:1)
/// Proof: Treasury Proposals (max_values: None, max_size: Some(108), added: 2583, mode: MaxEncodedLen)
/// Storage: System Account (r:1 w:1)
/// Proof: System Account (max_values: None, max_size: Some(128), added: 2603, mode: MaxEncodedLen)
fn reject_proposal() -> Weight {
// Proof Size summary in bytes:
// Measured: `265`
// Measured: `301`
// Estimated: `3593`
// Minimum execution time: 40_318_000 picoseconds.
Weight::from_parts(41_598_000, 0)
// Minimum execution time: 547_000_000 picoseconds.
Weight::from_parts(550_000_000, 0)
.saturating_add(Weight::from_parts(0, 3593))
.saturating_add(T::DbWeight::get().reads(2))
.saturating_add(T::DbWeight::get().writes(2))
}
/// Storage: `Treasury::Proposals` (r:1 w:0)
/// Proof: `Treasury::Proposals` (`max_values`: None, `max_size`: Some(108), added: 2583, mode: `MaxEncodedLen`)
/// Storage: `Treasury::Approvals` (r:1 w:1)
/// Proof: `Treasury::Approvals` (`max_values`: Some(1), `max_size`: Some(402), added: 897, mode: `MaxEncodedLen`)
/// Storage: Treasury Proposals (r:1 w:0)
/// Proof: Treasury Proposals (max_values: None, max_size: Some(108), added: 2583, mode: MaxEncodedLen)
/// Storage: Treasury Approvals (r:1 w:1)
/// Proof: Treasury Approvals (max_values: Some(1), max_size: Some(402), added: 897, mode: MaxEncodedLen)
/// The range of component `p` is `[0, 99]`.
fn approve_proposal(p: u32, ) -> Weight {
// Proof Size summary in bytes:
// Measured: `433 + p * (8 ±0)`
// Measured: `470 + p * (8 ±0)`
// Estimated: `3573`
// Minimum execution time: 8_250_000 picoseconds.
Weight::from_parts(10_937_873, 0)
// Minimum execution time: 104_000_000 picoseconds.
Weight::from_parts(121_184_402, 0)
.saturating_add(Weight::from_parts(0, 3573))
// Standard Error: 1_239
.saturating_add(Weight::from_parts(82_426, 0).saturating_mul(p.into()))
// Standard Error: 42_854
.saturating_add(Weight::from_parts(153_112, 0).saturating_mul(p.into()))
.saturating_add(T::DbWeight::get().reads(2))
.saturating_add(T::DbWeight::get().writes(1))
}
/// Storage: `Treasury::Approvals` (r:1 w:1)
/// Proof: `Treasury::Approvals` (`max_values`: Some(1), `max_size`: Some(402), added: 897, mode: `MaxEncodedLen`)
/// Storage: Treasury Approvals (r:1 w:1)
/// Proof: Treasury Approvals (max_values: Some(1), max_size: Some(402), added: 897, mode: MaxEncodedLen)
fn remove_approval() -> Weight {
// Proof Size summary in bytes:
// Measured: `90`
// Measured: `127`
// Estimated: `1887`
// Minimum execution time: 6_170_000 picoseconds.
Weight::from_parts(6_366_000, 0)
// Minimum execution time: 80_000_000 picoseconds.
Weight::from_parts(82_000_000, 0)
.saturating_add(Weight::from_parts(0, 1887))
.saturating_add(T::DbWeight::get().reads(1))
.saturating_add(T::DbWeight::get().writes(1))
}
/// Storage: `Treasury::Deactivated` (r:1 w:1)
/// Proof: `Treasury::Deactivated` (`max_values`: Some(1), `max_size`: Some(16), added: 511, mode: `MaxEncodedLen`)
/// Storage: `Balances::InactiveIssuance` (r:1 w:1)
/// Proof: `Balances::InactiveIssuance` (`max_values`: Some(1), `max_size`: Some(16), added: 511, mode: `MaxEncodedLen`)
/// Storage: `Treasury::Approvals` (r:1 w:1)
/// Proof: `Treasury::Approvals` (`max_values`: Some(1), `max_size`: Some(402), added: 897, mode: `MaxEncodedLen`)
/// Storage: `Treasury::Proposals` (r:100 w:100)
/// Proof: `Treasury::Proposals` (`max_values`: None, `max_size`: Some(108), added: 2583, mode: `MaxEncodedLen`)
/// Storage: `System::Account` (r:200 w:200)
/// Proof: `System::Account` (`max_values`: None, `max_size`: Some(128), added: 2603, mode: `MaxEncodedLen`)
/// The range of component `p` is `[0, 100]`.
/// Storage: Treasury Deactivated (r:1 w:1)
/// Proof: Treasury Deactivated (max_values: Some(1), max_size: Some(16), added: 511, mode: MaxEncodedLen)
/// Storage: Balances InactiveIssuance (r:1 w:1)
/// Proof: Balances InactiveIssuance (max_values: Some(1), max_size: Some(16), added: 511, mode: MaxEncodedLen)
/// Storage: Treasury Approvals (r:1 w:1)
/// Proof: Treasury Approvals (max_values: Some(1), max_size: Some(402), added: 897, mode: MaxEncodedLen)
/// Storage: Treasury Proposals (r:99 w:99)
/// Proof: Treasury Proposals (max_values: None, max_size: Some(108), added: 2583, mode: MaxEncodedLen)
/// Storage: System Account (r:199 w:199)
/// Proof: System Account (max_values: None, max_size: Some(128), added: 2603, mode: MaxEncodedLen)
/// Storage: Bounties BountyApprovals (r:1 w:1)
/// Proof: Bounties BountyApprovals (max_values: Some(1), max_size: Some(402), added: 897, mode: MaxEncodedLen)
/// The range of component `p` is `[0, 99]`.
fn on_initialize_proposals(p: u32, ) -> Weight {
// Proof Size summary in bytes:
// Measured: `175 + p * (251 ±0)`
// Estimated: `1887 + p * (5206 ±0)`
// Minimum execution time: 39_691_000 picoseconds.
Weight::from_parts(29_703_313, 0)
.saturating_add(Weight::from_parts(0, 1887))
// Standard Error: 18_540
.saturating_add(Weight::from_parts(42_601_290, 0).saturating_mul(p.into()))
.saturating_add(T::DbWeight::get().reads(3))
// Measured: `331 + p * (251 ±0)`
// Estimated: `3593 + p * (5206 ±0)`
// Minimum execution time: 887_000_000 picoseconds.
Weight::from_parts(828_616_021, 0)
.saturating_add(Weight::from_parts(0, 3593))
// Standard Error: 695_351
.saturating_add(Weight::from_parts(566_114_524, 0).saturating_mul(p.into()))
.saturating_add(T::DbWeight::get().reads(5))
.saturating_add(T::DbWeight::get().reads((3_u64).saturating_mul(p.into())))
.saturating_add(T::DbWeight::get().writes(3))
.saturating_add(T::DbWeight::get().writes(5))
.saturating_add(T::DbWeight::get().writes((3_u64).saturating_mul(p.into())))
.saturating_add(Weight::from_parts(0, 5206).saturating_mul(p.into()))
}
/// Storage: AssetRate ConversionRateToNative (r:1 w:0)
/// Proof: AssetRate ConversionRateToNative (max_values: None, max_size: Some(1237), added: 3712, mode: MaxEncodedLen)
/// Storage: Treasury SpendCount (r:1 w:1)
/// Proof: Treasury SpendCount (max_values: Some(1), max_size: Some(4), added: 499, mode: MaxEncodedLen)
/// Storage: Treasury Spends (r:0 w:1)
/// Proof: Treasury Spends (max_values: None, max_size: Some(1848), added: 4323, mode: MaxEncodedLen)
fn spend() -> Weight {
// Proof Size summary in bytes:
// Measured: `114`
// Estimated: `4702`
// Minimum execution time: 208_000_000 picoseconds.
Weight::from_parts(222_000_000, 0)
.saturating_add(Weight::from_parts(0, 4702))
.saturating_add(T::DbWeight::get().reads(2))
.saturating_add(T::DbWeight::get().writes(2))
}
/// Storage: Treasury Spends (r:1 w:1)
/// Proof: Treasury Spends (max_values: None, max_size: Some(1848), added: 4323, mode: MaxEncodedLen)
/// Storage: XcmPallet QueryCounter (r:1 w:1)
/// Proof Skipped: XcmPallet QueryCounter (max_values: Some(1), max_size: None, mode: Measured)
/// Storage: Configuration ActiveConfig (r:1 w:0)
/// Proof Skipped: Configuration ActiveConfig (max_values: Some(1), max_size: None, mode: Measured)
/// Storage: Dmp DeliveryFeeFactor (r:1 w:0)
/// Proof Skipped: Dmp DeliveryFeeFactor (max_values: None, max_size: None, mode: Measured)
/// Storage: XcmPallet SupportedVersion (r:1 w:0)
/// Proof Skipped: XcmPallet SupportedVersion (max_values: None, max_size: None, mode: Measured)
/// Storage: XcmPallet VersionDiscoveryQueue (r:1 w:1)
/// Proof Skipped: XcmPallet VersionDiscoveryQueue (max_values: Some(1), max_size: None, mode: Measured)
/// Storage: XcmPallet SafeXcmVersion (r:1 w:0)
/// Proof Skipped: XcmPallet SafeXcmVersion (max_values: Some(1), max_size: None, mode: Measured)
/// Storage: Dmp DownwardMessageQueues (r:1 w:1)
/// Proof Skipped: Dmp DownwardMessageQueues (max_values: None, max_size: None, mode: Measured)
/// Storage: Dmp DownwardMessageQueueHeads (r:1 w:1)
/// Proof Skipped: Dmp DownwardMessageQueueHeads (max_values: None, max_size: None, mode: Measured)
/// Storage: XcmPallet Queries (r:0 w:1)
/// Proof Skipped: XcmPallet Queries (max_values: None, max_size: None, mode: Measured)
fn payout() -> Weight {
// Proof Size summary in bytes:
// Measured: `737`
// Estimated: `5313`
// Minimum execution time: 551_000_000 picoseconds.
Weight::from_parts(569_000_000, 0)
.saturating_add(Weight::from_parts(0, 5313))
.saturating_add(T::DbWeight::get().reads(9))
.saturating_add(T::DbWeight::get().writes(6))
}
/// Storage: Treasury Spends (r:1 w:1)
/// Proof: Treasury Spends (max_values: None, max_size: Some(1848), added: 4323, mode: MaxEncodedLen)
/// Storage: XcmPallet Queries (r:1 w:1)
/// Proof Skipped: XcmPallet Queries (max_values: None, max_size: None, mode: Measured)
fn check_status() -> Weight {
// Proof Size summary in bytes:
// Measured: `442`
// Estimated: `5313`
// Minimum execution time: 245_000_000 picoseconds.
Weight::from_parts(281_000_000, 0)
.saturating_add(Weight::from_parts(0, 5313))
.saturating_add(T::DbWeight::get().reads(2))
.saturating_add(T::DbWeight::get().writes(2))
}
/// Storage: Treasury Spends (r:1 w:1)
/// Proof: Treasury Spends (max_values: None, max_size: Some(1848), added: 4323, mode: MaxEncodedLen)
fn void_spend() -> Weight {
// Proof Size summary in bytes:
// Measured: `172`
// Estimated: `5313`
// Minimum execution time: 147_000_000 picoseconds.
Weight::from_parts(160_000_000, 0)
.saturating_add(Weight::from_parts(0, 5313))
.saturating_add(T::DbWeight::get().reads(1))
.saturating_add(T::DbWeight::get().writes(1))
}
}