git.delta.rocks / unique-network / refs/commits / 4c545c7371c2

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617// Original license:18// This file is part of Substrate.1920// Copyright (C) 2017-2022 Parity Technologies (UK) Ltd.21// SPDX-License-Identifier: Apache-2.02223// Licensed under the Apache License, Version 2.0 (the "License");24// you may not use this file except in compliance with the License.25// You may obtain a copy of the License at26//27// 	http://www.apache.org/licenses/LICENSE-2.028//29// Unless required by applicable law or agreed to in writing, software30// distributed under the License is distributed on an "AS IS" BASIS,31// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.32// See the License for the specific language governing permissions and33// limitations under the License.3435//! # Unique scheduler36//! A Pallet for scheduling dispatches.37//!38//! - [`Config`]39//! - [`Call`]40//! - [`Pallet`]41//!42//! ## Overview43//!44//! This Pallet exposes capabilities for scheduling dispatches to occur at a45//! specified block number or at a specified period. These scheduled dispatches46//! should be named and may be canceled.47//!48//! **NOTE:** The unique scheduler is designed for deferred transaction calls by block number.49//! Any user can book a call of a certain transaction to a specific block number.50//! Also possible to book a call with a certain frequency.51//!52//! Key differences from the original pallet:53//! https://crates.io/crates/pallet-scheduler54//! Schedule Id restricted by 16 bytes. Identificator for booked call.55//! Priority limited by HARD DEADLINE (<= 63). Calls over maximum weight don't include to block.56//! The maximum weight that may be scheduled per block for any dispatchables of less priority than `schedule::HARD_DEADLINE`.57//! Maybe_periodic limit is 100 calls. Reserved for future sponsored transaction support.58//! At 100 calls reserved amount is not so much and this is avoid potential problems with balance locks.59//! Any account allowed to schedule any calls. Account withdraw implemented through default transaction logic.60//!61//! ## Interface62//!63//! ### Dispatchable Functions64//!65//! * `schedule_named` - augments the `schedule` interface with an additional `Vec<u8>` parameter66//!   that can be used for identification.67//! * `cancel_named` - the named complement to the cancel function.6869// Ensure we're `no_std` when compiling for Wasm.70#![cfg_attr(not(feature = "std"), no_std)]7172#[cfg(feature = "runtime-benchmarks")]73mod benchmarking;7475pub mod weights;7677use sp_core::H160;78use codec::{Codec, Decode, Encode};79use frame_system::{self as system, ensure_signed};80pub use pallet::*;81use scale_info::TypeInfo;82use sp_runtime::{83	traits::{BadOrigin, One, Saturating, Zero},84	RuntimeDebug, DispatchErrorWithPostInfo,85};86use sp_std::{borrow::Borrow, cmp::Ordering, marker::PhantomData, prelude::*};8788use frame_support::{89	dispatch::{DispatchError, DispatchResult, Dispatchable, Parameter},90	traits::{91		schedule::{self, DispatchTime, MaybeHashed},92		NamedReservableCurrency, EnsureOrigin, Get, IsType, OriginTrait, PrivilegeCmp,93		StorageVersion,94	},95	weights::{GetDispatchInfo, Weight},96};9798pub use weights::WeightInfo;99100/// Just a simple index for naming period tasks.101pub type PeriodicIndex = u32;102/// The location of a scheduled task that can be used to remove it.103pub type TaskAddress<BlockNumber> = (BlockNumber, u32);104pub const MAX_TASK_ID_LENGTH_IN_BYTES: u8 = 16;105106type ScheduledId = [u8; MAX_TASK_ID_LENGTH_IN_BYTES as usize];107pub type CallOrHashOf<T> = MaybeHashed<<T as Config>::Call, <T as frame_system::Config>::Hash>;108109/// Information regarding an item to be executed in the future.110#[cfg_attr(any(feature = "std", test), derive(PartialEq, Eq))]111#[derive(Clone, RuntimeDebug, Encode, Decode, TypeInfo)]112pub struct ScheduledV3<Call, BlockNumber, PalletsOrigin, AccountId> {113	/// The unique identity for this task, if there is one.114	maybe_id: Option<ScheduledId>,115	/// This task's priority.116	priority: schedule::Priority,117	/// The call to be dispatched.118	call: Call,119	/// If the call is periodic, then this points to the information concerning that.120	maybe_periodic: Option<schedule::Period<BlockNumber>>,121	/// The origin to dispatch the call.122	origin: PalletsOrigin,123	_phantom: PhantomData<AccountId>,124}125126pub type ScheduledV3Of<T> = ScheduledV3<127	CallOrHashOf<T>,128	<T as frame_system::Config>::BlockNumber,129	<T as Config>::PalletsOrigin,130	<T as frame_system::Config>::AccountId,131>;132133pub type ScheduledOf<T> = ScheduledV3Of<T>;134135/// The current version of Scheduled struct.136pub type Scheduled<Call, BlockNumber, PalletsOrigin, AccountId> =137	ScheduledV3<Call, BlockNumber, PalletsOrigin, AccountId>;138139#[cfg(feature = "runtime-benchmarks")]140mod preimage_provider {141	use frame_support::traits::PreimageRecipient;142	pub trait PreimageProviderAndMaybeRecipient<H>: PreimageRecipient<H> {}143	impl<H, T: PreimageRecipient<H>> PreimageProviderAndMaybeRecipient<H> for T {}144}145146#[cfg(not(feature = "runtime-benchmarks"))]147mod preimage_provider {148	use frame_support::traits::PreimageProvider;149	pub trait PreimageProviderAndMaybeRecipient<H>: PreimageProvider<H> {}150	impl<H, T: PreimageProvider<H>> PreimageProviderAndMaybeRecipient<H> for T {}151}152153pub use preimage_provider::PreimageProviderAndMaybeRecipient;154155/// Weight templates for calculating actual fees156pub(crate) trait MarginalWeightInfo: WeightInfo {157	fn item(periodic: bool, named: bool, resolved: Option<bool>) -> Weight {158		match (periodic, named, resolved) {159			(_, false, None) => Self::on_initialize_aborted(2) - Self::on_initialize_aborted(1),160			(_, true, None) => {161				Self::on_initialize_named_aborted(2) - Self::on_initialize_named_aborted(1)162			}163			(false, false, Some(false)) => Self::on_initialize(2) - Self::on_initialize(1),164			(false, true, Some(false)) => {165				Self::on_initialize_named(2) - Self::on_initialize_named(1)166			}167			(true, false, Some(false)) => {168				Self::on_initialize_periodic(2) - Self::on_initialize_periodic(1)169			}170			(true, true, Some(false)) => {171				Self::on_initialize_periodic_named_resolved(2)172					- Self::on_initialize_periodic_named_resolved(1)173			}174			(false, false, Some(true)) => Self::on_initialize(2) - Self::on_initialize(1),175			(false, true, Some(true)) => {176				Self::on_initialize_named_resolved(2) - Self::on_initialize_named_resolved(1)177			}178			(true, false, Some(true)) => {179				Self::on_initialize_periodic_resolved(2) - Self::on_initialize_periodic_resolved(1)180			}181			(true, true, Some(true)) => {182				Self::on_initialize_periodic_named_resolved(2)183					- Self::on_initialize_periodic_named_resolved(1)184			}185		}186	}187}188impl<T: WeightInfo> MarginalWeightInfo for T {}189190#[frame_support::pallet]191pub mod pallet {192	use super::*;193	use frame_support::{194		dispatch::PostDispatchInfo,195		pallet_prelude::*,196		traits::{schedule::LookupError, PreimageProvider},197	};198	use frame_system::pallet_prelude::*;199200	/// The current storage version.201	const STORAGE_VERSION: StorageVersion = StorageVersion::new(3);202203	#[pallet::pallet]204	#[pallet::generate_store(pub(super) trait Store)]205	#[pallet::storage_version(STORAGE_VERSION)]206	#[pallet::without_storage_info]207	pub struct Pallet<T>(_);208209	/// `system::Config` should always be included in our implied traits.210	#[pallet::config]211	pub trait Config: frame_system::Config {212		/// The overarching event type.213		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;214215		/// The aggregated origin which the dispatch will take.216		type Origin: OriginTrait<PalletsOrigin = Self::PalletsOrigin>217			+ From<Self::PalletsOrigin>218			+ IsType<<Self as system::Config>::Origin>;219220		/// The caller origin, overarching type of all pallets origins.221		type PalletsOrigin: From<system::RawOrigin<Self::AccountId>> + Codec + Clone + Eq + TypeInfo;222223		type Currency: NamedReservableCurrency<Self::AccountId, ReserveIdentifier = ScheduledId>;224225		/// The aggregated call type.226		type Call: Parameter227			+ Dispatchable<Origin = <Self as Config>::Origin, PostInfo = PostDispatchInfo>228			+ GetDispatchInfo229			+ From<system::Call<Self>>;230231		/// The maximum weight that may be scheduled per block for any dispatchables of less232		/// priority than `schedule::HARD_DEADLINE`.233		#[pallet::constant]234		type MaximumWeight: Get<Weight>;235236		/// Required origin to schedule or cancel calls.237		type ScheduleOrigin: EnsureOrigin<<Self as system::Config>::Origin>;238239		/// Compare the privileges of origins.240		///241		/// This will be used when canceling a task, to ensure that the origin that tries242		/// to cancel has greater or equal privileges as the origin that created the scheduled task.243		///244		/// For simplicity the [`EqualPrivilegeOnly`](frame_support::traits::EqualPrivilegeOnly) can245		/// be used. This will only check if two given origins are equal.246		type OriginPrivilegeCmp: PrivilegeCmp<Self::PalletsOrigin>;247248		/// The maximum number of scheduled calls in the queue for a single block.249		/// Not strictly enforced, but used for weight estimation.250		#[pallet::constant]251		type MaxScheduledPerBlock: Get<u32>;252253		/// Weight information for extrinsics in this pallet.254		type WeightInfo: WeightInfo;255256		/// The preimage provider with which we look up call hashes to get the call.257		type PreimageProvider: PreimageProviderAndMaybeRecipient<Self::Hash>;258259		/// If `Some` then the number of blocks to postpone execution for when the item is delayed.260		type NoPreimagePostponement: Get<Option<Self::BlockNumber>>;261262		/// Sponsoring function. In this version sposorship is disabled263		// type SponsorshipHandler: SponsorshipHandler<Self::AccountId, <Self as Config>::Call>;264265		/// The helper type used for custom transaction fee logic.266		type CallExecutor: DispatchCall<Self, H160>;267	}268269	/// A Scheduler-Runtime interface for finer payment handling.270	pub trait DispatchCall<T: frame_system::Config + Config, SelfContainedSignedInfo> {271		/// Lock balance required for transaction payment272		fn reserve_balance(273			id: ScheduledId,274			sponsor: <T as frame_system::Config>::AccountId,275			call: <T as Config>::Call,276			count: u32,277		) -> Result<(), DispatchError>;278279		/// Unlock centain amount from payer280		fn pay_for_call(281			id: ScheduledId,282			sponsor: <T as frame_system::Config>::AccountId,283			call: <T as Config>::Call,284		) -> Result<u128, DispatchError>;285286		/// Resolve the call dispatch, including any post-dispatch operations.287		fn dispatch_call(288			signer: T::AccountId,289			function: <T as Config>::Call,290		) -> Result<291			Result<PostDispatchInfo, DispatchErrorWithPostInfo<PostDispatchInfo>>,292			TransactionValidityError,293		>;294295		/// Cancel schedule reservation and unlock balance296		fn cancel_reserve(297			id: ScheduledId,298			sponsor: <T as frame_system::Config>::AccountId,299		) -> Result<u128, DispatchError>;300	}301302	/// Items to be executed, indexed by the block number that they should be executed on.303	#[pallet::storage]304	pub type Agenda<T: Config> =305		StorageMap<_, Twox64Concat, T::BlockNumber, Vec<Option<ScheduledV3Of<T>>>, ValueQuery>;306307	/// Lookup from identity to the block number and index of the task.308	#[pallet::storage]309	pub(crate) type Lookup<T: Config> =310		StorageMap<_, Twox64Concat, ScheduledId, TaskAddress<T::BlockNumber>>;311312	/// Events type.313	#[pallet::event]314	#[pallet::generate_deposit(pub(super) fn deposit_event)]315	pub enum Event<T: Config> {316		/// Scheduled some task.317		Scheduled { when: T::BlockNumber, index: u32 },318		/// Canceled some task.319		Canceled { when: T::BlockNumber, index: u32 },320		/// Dispatched some task.321		Dispatched {322			task: TaskAddress<T::BlockNumber>,323			id: Option<ScheduledId>,324			result: DispatchResult,325		},326		/// The call for the provided hash was not found so the task has been aborted.327		CallLookupFailed {328			task: TaskAddress<T::BlockNumber>,329			id: Option<ScheduledId>,330			error: LookupError,331		},332	}333334	#[pallet::error]335	pub enum Error<T> {336		/// Failed to schedule a call337		FailedToSchedule,338		/// Cannot find the scheduled call.339		NotFound,340		/// Given target block number is in the past.341		TargetBlockNumberInPast,342		/// Reschedule failed because it does not change scheduled time.343		RescheduleNoChange,344	}345346	#[pallet::hooks]347	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {348		/// Execute the scheduled calls349		fn on_initialize(now: T::BlockNumber) -> Weight {350			let limit = T::MaximumWeight::get();351352			let mut queued = Agenda::<T>::take(now)353				.into_iter()354				.enumerate()355				.filter_map(|(index, s)| Some((index as u32, s?)))356				.collect::<Vec<_>>();357358			if queued.len() as u32 > T::MaxScheduledPerBlock::get() {359				log::warn!(360					target: "runtime::scheduler",361					"Warning: This block has more items queued in Scheduler than \362					expected from the runtime configuration. An update might be needed."363				);364			}365366			queued.sort_by_key(|(_, s)| s.priority);367368			let next = now + One::one();369370			let mut total_weight: Weight = T::WeightInfo::on_initialize(0);371			for (order, (index, mut s)) in queued.into_iter().enumerate() {372				let named = if let Some(ref id) = s.maybe_id {373					Lookup::<T>::remove(id);374					true375				} else {376					false377				};378379				let (call, maybe_completed) = s.call.resolved::<T::PreimageProvider>();380				s.call = call;381382				let resolved = if let Some(completed) = maybe_completed {383					T::PreimageProvider::unrequest_preimage(&completed);384					true385				} else {386					false387				};388				let call = match s.call.as_value().cloned() {389					Some(c) => c,390					None => {391						// Preimage not available - postpone until some block.392						total_weight.saturating_accrue(T::WeightInfo::item(false, named, None));393						if let Some(delay) = T::NoPreimagePostponement::get() {394							let until = now.saturating_add(delay);395							if let Some(ref id) = s.maybe_id {396								let index = Agenda::<T>::decode_len(until).unwrap_or(0);397								Lookup::<T>::insert(id, (until, index as u32));398							}399							Agenda::<T>::append(until, Some(s));400						}401						continue;402					}403				};404405				let periodic = s.maybe_periodic.is_some();406				let call_weight = call.get_dispatch_info().weight;407				let mut item_weight = T::WeightInfo::item(periodic, named, Some(resolved));408				let origin =409					<<T as Config>::Origin as From<T::PalletsOrigin>>::from(s.origin.clone())410						.into();411				if ensure_signed(origin).is_ok() {412					// Weights of Signed dispatches expect their signing account to be whitelisted.413					item_weight.saturating_accrue(T::DbWeight::get().reads_writes(1, 1));414				}415416				// We allow a scheduled call if any is true:417				// - It's priority is `HARD_DEADLINE`418				// - It does not push the weight past the limit.419				// - It is the first item in the schedule420				let hard_deadline = s.priority <= schedule::HARD_DEADLINE;421				let test_weight = total_weight422					.saturating_add(call_weight)423					.saturating_add(item_weight);424				if !hard_deadline && order > 0 && test_weight > limit {425					// Cannot be scheduled this block - postpone until next.426					total_weight.saturating_accrue(T::WeightInfo::item(false, named, None));427					if let Some(ref id) = s.maybe_id {428						// NOTE: We could reasonably not do this (in which case there would be one429						// block where the named and delayed item could not be referenced by name),430						// but we will do it anyway since it should be mostly free in terms of431						// weight and it is slightly cleaner.432						let index = Agenda::<T>::decode_len(next).unwrap_or(0);433						Lookup::<T>::insert(id, (next, index as u32));434					}435					Agenda::<T>::append(next, Some(s));436					continue;437				}438439				// Sender is the account who signed transaction440				let sender = ensure_signed(441					<<T as Config>::Origin as From<T::PalletsOrigin>>::from(s.origin.clone())442						.into(),443				)444				.unwrap();445446				// // if call have id it was be reserved447				// if s.maybe_id.is_some() {448				// 	let _ = T::CallExecutor::pay_for_call(449				// 		s.maybe_id.unwrap(),450				// 		sender.clone(),451				// 		call.clone(),452				// 	);453				// }454455				// Execute transaction via chain default pipeline456				// That means dispatch will be processed like any user's extrinsic e.g. transaction fees will be taken457				let r = T::CallExecutor::dispatch_call(sender, call.clone());458459				let mut actual_call_weight: Weight = item_weight;460				let result: Result<_, DispatchError> = match r {461					Ok(o) => match o {462						Ok(di) => {463							actual_call_weight = di.actual_weight.unwrap_or(item_weight);464							Ok(())465						}466						Err(err) => Err(err.error),467					},468					Err(_) => {469						log::error!(470							target: "runtime::scheduler",471							"Warning: Scheduler has failed to execute a post-dispatch transaction. \472							This block might have become invalid.");473						Err(DispatchError::CannotLookup)474					} // todo possibly force a skip/return here, do something with the error475				};476477				total_weight.saturating_accrue(item_weight);478				total_weight.saturating_accrue(actual_call_weight);479480				Self::deposit_event(Event::Dispatched {481					task: (now, index),482					id: s.maybe_id.clone(),483					result,484				});485486				if let &Some((period, count)) = &s.maybe_periodic {487					if count > 1 {488						s.maybe_periodic = Some((period, count - 1));489					} else {490						s.maybe_periodic = None;491					}492					let wake = now + period;493					// If scheduled is named, place its information in `Lookup`494					if let Some(ref id) = s.maybe_id {495						let wake_index = Agenda::<T>::decode_len(wake).unwrap_or(0);496						Lookup::<T>::insert(id, (wake, wake_index as u32));497					}498					Agenda::<T>::append(wake, Some(s));499				}500			}501			/// Weight should be 0, because transaction already paid502			0503		}504	}505506	#[pallet::call]507	impl<T: Config> Pallet<T> {508		/// Schedule a named task.509		#[pallet::weight(<T as Config>::WeightInfo::schedule_named(T::MaxScheduledPerBlock::get()))]510		pub fn schedule_named(511			origin: OriginFor<T>,512			id: ScheduledId,513			when: T::BlockNumber,514			maybe_periodic: Option<schedule::Period<T::BlockNumber>>,515			priority: schedule::Priority,516			call: Box<CallOrHashOf<T>>,517		) -> DispatchResult {518			T::ScheduleOrigin::ensure_origin(origin.clone())?;519			let origin = <T as Config>::Origin::from(origin);520			Self::do_schedule_named(521				id,522				DispatchTime::At(when),523				maybe_periodic,524				priority,525				origin.caller().clone(),526				*call,527			)?;528			Ok(())529		}530531		/// Cancel a named scheduled task.532		#[pallet::weight(<T as Config>::WeightInfo::cancel_named(T::MaxScheduledPerBlock::get()))]533		pub fn cancel_named(origin: OriginFor<T>, id: ScheduledId) -> DispatchResult {534			T::ScheduleOrigin::ensure_origin(origin.clone())?;535			let origin = <T as Config>::Origin::from(origin);536			Self::do_cancel_named(Some(origin.caller().clone()), id)?;537			Ok(())538		}539540		/// Schedule a named task after a delay.541		///542		/// # <weight>543		/// Same as [`schedule_named`](Self::schedule_named).544		/// # </weight>545		#[pallet::weight(<T as Config>::WeightInfo::schedule_named(T::MaxScheduledPerBlock::get()))]546		pub fn schedule_named_after(547			origin: OriginFor<T>,548			id: ScheduledId,549			after: T::BlockNumber,550			maybe_periodic: Option<schedule::Period<T::BlockNumber>>,551			priority: schedule::Priority,552			call: Box<CallOrHashOf<T>>,553		) -> DispatchResult {554			T::ScheduleOrigin::ensure_origin(origin.clone())?;555			let origin = <T as Config>::Origin::from(origin);556			Self::do_schedule_named(557				id,558				DispatchTime::After(after),559				maybe_periodic,560				priority,561				origin.caller().clone(),562				*call,563			)?;564			Ok(())565		}566	}567}568569impl<T: Config> Pallet<T> {570	#[cfg(feature = "try-runtime")]571	pub fn pre_migrate_to_v3() -> Result<(), &'static str> {572		Ok(())573	}574575	#[cfg(feature = "try-runtime")]576	pub fn post_migrate_to_v3() -> Result<(), &'static str> {577		use frame_support::dispatch::GetStorageVersion;578579		assert!(Self::current_storage_version() == 3);580		for k in Agenda::<T>::iter_keys() {581			let _ = Agenda::<T>::try_get(k).map_err(|()| "Invalid item in Agenda")?;582		}583		Ok(())584	}585586	/// Helper to migrate scheduler when the pallet origin type has changed.587	pub fn migrate_origin<OldOrigin: Into<T::PalletsOrigin> + codec::Decode>() {588		Agenda::<T>::translate::<589			Vec<Option<Scheduled<CallOrHashOf<T>, T::BlockNumber, OldOrigin, T::AccountId>>>,590			_,591		>(|_, agenda| {592			Some(593				agenda594					.into_iter()595					.map(|schedule| {596						schedule.map(|schedule| Scheduled {597							maybe_id: schedule.maybe_id,598							priority: schedule.priority,599							call: schedule.call,600							maybe_periodic: schedule.maybe_periodic,601							origin: schedule.origin.into(),602							_phantom: Default::default(),603						})604					})605					.collect::<Vec<_>>(),606			)607		});608	}609610	fn resolve_time(when: DispatchTime<T::BlockNumber>) -> Result<T::BlockNumber, DispatchError> {611		let now = frame_system::Pallet::<T>::block_number();612613		let when = match when {614			DispatchTime::At(x) => x,615			// The current block has already completed it's scheduled tasks, so616			// Schedule the task at lest one block after this current block.617			DispatchTime::After(x) => now.saturating_add(x).saturating_add(One::one()),618		};619620		if when <= now {621			return Err(Error::<T>::TargetBlockNumberInPast.into());622		}623624		Ok(when)625	}626627	fn do_schedule_named(628		id: ScheduledId,629		when: DispatchTime<T::BlockNumber>,630		maybe_periodic: Option<schedule::Period<T::BlockNumber>>,631		priority: schedule::Priority,632		origin: T::PalletsOrigin,633		call: CallOrHashOf<T>,634	) -> Result<TaskAddress<T::BlockNumber>, DispatchError> {635		// ensure id it is unique636		if Lookup::<T>::contains_key(&id) {637			return Err(Error::<T>::FailedToSchedule)?;638		}639640		let when = Self::resolve_time(when)?;641642		call.ensure_requested::<T::PreimageProvider>();643644		// sanitize maybe_periodic645		let maybe_periodic = maybe_periodic646			.filter(|p| p.1 > 1 && !p.0.is_zero())647			// Remove one from the number of repetitions since we will schedule one now.648			.map(|(p, c)| (p, c - 1));649650		let s = Scheduled {651			maybe_id: Some(id.clone()),652			priority,653			call: call.clone(),654			maybe_periodic,655			origin: origin.clone(),656			_phantom: Default::default(),657		};658659		// reserve balance for periodic execution660		// let sender =661		// 	ensure_signed(<<T as Config>::Origin as From<T::PalletsOrigin>>::from(origin).into())?;662		// let repeats = match maybe_periodic {663		// 	Some(p) => p.1,664		// 	None => 1,665		// };666		// let _ = T::CallExecutor::reserve_balance(667		// 	id.clone(),668		// 	sender,669		// 	call.as_value().unwrap().clone(),670		// 	repeats,671		// );672673		Agenda::<T>::append(when, Some(s));674		let index = Agenda::<T>::decode_len(when).unwrap_or(1) as u32 - 1;675		let address = (when, index);676		Lookup::<T>::insert(&id, &address);677		Self::deposit_event(Event::Scheduled { when, index });678679		Ok(address)680	}681682	fn do_cancel_named(origin: Option<T::PalletsOrigin>, id: ScheduledId) -> DispatchResult {683		Lookup::<T>::try_mutate_exists(id, |lookup| -> DispatchResult {684			if let Some((when, index)) = lookup.take() {685				let i = index as usize;686				Agenda::<T>::try_mutate(when, |agenda| -> DispatchResult {687					if let Some(s) = agenda.get_mut(i) {688						if let (Some(ref o), Some(ref s)) = (origin.clone(), s.borrow()) {689							if matches!(690								T::OriginPrivilegeCmp::cmp_privilege(o, &s.origin),691								Some(Ordering::Less) | None692							) {693								return Err(BadOrigin.into());694							}695							// release balance reserve696							// let sender = ensure_signed(697							// 	<<T as Config>::Origin as From<T::PalletsOrigin>>::from(698							// 		origin.unwrap(),699							// 	)700							// 	.into(),701							// )?;702							// let _ = T::CallExecutor::cancel_reserve(id, sender);703704							s.call.ensure_unrequested::<T::PreimageProvider>();705						}706						*s = None;707					}708					Ok(())709				})?;710711				Self::deposit_event(Event::Canceled { when, index });712				Ok(())713			} else {714				Err(Error::<T>::NotFound)?715			}716		})717	}718}