git.delta.rocks / unique-network / refs/commits / 458018a9b704

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//! may be named or anonymous and may be canceled.47//!48//! **NOTE:** The scheduled calls will be dispatched with the default filter49//! for the origin: namely `frame_system::Config::BaseCallFilter` for all origin50//! except root which will get no filter. And not the filter contained in origin51//! use to call `fn schedule`.52//!53//! If a call is scheduled using proxy or whatever mecanism which adds filter,54//! then those filter will not be used when dispatching the schedule call.55//!56//! **NOTE:** The unique scheduler is designed for deferred transaction calls by block number.57//! Any user can book a call of a certain transaction to a specific block number.58//! Also possible to book a call with a certain frequency.59//!60//! Key differences from original pallet:61//! https://crates.io/crates/pallet-scheduler62//! Schedule Id restricted by 16 bytes63//! Priority limited by HARD DEADLINE (<= 63). Calls over maximum weight don't include to block64//! Maybe_periodic limit is 100 calls65//! Any account allowed to schedule any calls. Account withdraw implemented through default transaction logic.66//!67//! ## Interface68//!69//! ### Dispatchable Functions70//!71//! * `schedule` - schedule a dispatch, which may be periodic, to occur at a specified block and72//!   with a specified priority.73//! * `cancel` - cancel a scheduled dispatch, specified by block number and index.74//! * `schedule_named` - augments the `schedule` interface with an additional `Vec<u8>` parameter75//!   that can be used for identification.76//! * `cancel_named` - the named complement to the cancel function.7778// Ensure we're `no_std` when compiling for Wasm.79#![cfg_attr(not(feature = "std"), no_std)]8081#[cfg(feature = "runtime-benchmarks")]82mod benchmarking;8384pub mod weights;8586use sp_core::H160;87use codec::{Codec, Decode, Encode};88use frame_system::{self as system, ensure_signed};89pub use pallet::*;90use scale_info::TypeInfo;91use sp_runtime::{92	traits::{BadOrigin, One, Saturating, Zero},93	RuntimeDebug, DispatchErrorWithPostInfo,94};95use sp_std::{borrow::Borrow, cmp::Ordering, marker::PhantomData, prelude::*};9697use frame_support::{98	dispatch::{DispatchError, DispatchResult, Dispatchable, Parameter},99	traits::{100		schedule::{self, DispatchTime, MaybeHashed},101		NamedReservableCurrency, EnsureOrigin, Get, IsType, OriginTrait, PrivilegeCmp,102		StorageVersion,103	},104	weights::{GetDispatchInfo, Weight},105};106107pub use weights::WeightInfo;108109/// Just a simple index for naming period tasks.110pub type PeriodicIndex = u32;111/// The location of a scheduled task that can be used to remove it.112pub type TaskAddress<BlockNumber> = (BlockNumber, u32);113pub const MAX_TASK_ID_LENGTH_IN_BYTES: u8 = 16;114115type ScheduledId = [u8; MAX_TASK_ID_LENGTH_IN_BYTES as usize];116pub type CallOrHashOf<T> = MaybeHashed<<T as Config>::Call, <T as frame_system::Config>::Hash>;117118/// Information regarding an item to be executed in the future.119#[cfg_attr(any(feature = "std", test), derive(PartialEq, Eq))]120#[derive(Clone, RuntimeDebug, Encode, Decode, TypeInfo)]121pub struct ScheduledV3<Call, BlockNumber, PalletsOrigin, AccountId> {122	/// The unique identity for this task, if there is one.123	maybe_id: Option<ScheduledId>,124	/// This task's priority.125	priority: schedule::Priority,126	/// The call to be dispatched.127	call: Call,128	/// If the call is periodic, then this points to the information concerning that.129	maybe_periodic: Option<schedule::Period<BlockNumber>>,130	/// The origin to dispatch the call.131	origin: PalletsOrigin,132	_phantom: PhantomData<AccountId>,133}134135pub type ScheduledV3Of<T> = ScheduledV3<136	CallOrHashOf<T>,137	<T as frame_system::Config>::BlockNumber,138	<T as Config>::PalletsOrigin,139	<T as frame_system::Config>::AccountId,140>;141142pub type ScheduledOf<T> = ScheduledV3Of<T>;143144/// The current version of Scheduled struct.145pub type Scheduled<Call, BlockNumber, PalletsOrigin, AccountId> =146	ScheduledV3<Call, BlockNumber, PalletsOrigin, AccountId>;147148#[cfg(feature = "runtime-benchmarks")]149mod preimage_provider {150	use frame_support::traits::PreimageRecipient;151	pub trait PreimageProviderAndMaybeRecipient<H>: PreimageRecipient<H> {}152	impl<H, T: PreimageRecipient<H>> PreimageProviderAndMaybeRecipient<H> for T {}153}154155#[cfg(not(feature = "runtime-benchmarks"))]156mod preimage_provider {157	use frame_support::traits::PreimageProvider;158	pub trait PreimageProviderAndMaybeRecipient<H>: PreimageProvider<H> {}159	impl<H, T: PreimageProvider<H>> PreimageProviderAndMaybeRecipient<H> for T {}160}161162pub use preimage_provider::PreimageProviderAndMaybeRecipient;163164/// Weight templates for calculating actual fees165pub(crate) trait MarginalWeightInfo: WeightInfo {166	fn item(periodic: bool, named: bool, resolved: Option<bool>) -> Weight {167		match (periodic, named, resolved) {168			(_, false, None) => Self::on_initialize_aborted(2) - Self::on_initialize_aborted(1),169			(_, true, None) => {170				Self::on_initialize_named_aborted(2) - Self::on_initialize_named_aborted(1)171			}172			(false, false, Some(false)) => Self::on_initialize(2) - Self::on_initialize(1),173			(false, true, Some(false)) => {174				Self::on_initialize_named(2) - Self::on_initialize_named(1)175			}176			(true, false, Some(false)) => {177				Self::on_initialize_periodic(2) - Self::on_initialize_periodic(1)178			}179			(true, true, Some(false)) => {180				Self::on_initialize_periodic_named_resolved(2)181					- Self::on_initialize_periodic_named_resolved(1)182			}183			(false, false, Some(true)) => Self::on_initialize(2) - Self::on_initialize(1),184			(false, true, Some(true)) => {185				Self::on_initialize_named_resolved(2) - Self::on_initialize_named_resolved(1)186			}187			(true, false, Some(true)) => {188				Self::on_initialize_periodic_resolved(2) - Self::on_initialize_periodic_resolved(1)189			}190			(true, true, Some(true)) => {191				Self::on_initialize_periodic_named_resolved(2)192					- Self::on_initialize_periodic_named_resolved(1)193			}194		}195	}196}197impl<T: WeightInfo> MarginalWeightInfo for T {}198199#[frame_support::pallet]200pub mod pallet {201	use super::*;202	use frame_support::{203		dispatch::PostDispatchInfo,204		pallet_prelude::*,205		traits::{schedule::LookupError, PreimageProvider},206	};207	use frame_system::pallet_prelude::*;208209	/// The current storage version.210	const STORAGE_VERSION: StorageVersion = StorageVersion::new(3);211212	#[pallet::pallet]213	#[pallet::generate_store(pub(super) trait Store)]214	#[pallet::storage_version(STORAGE_VERSION)]215	#[pallet::without_storage_info]216	pub struct Pallet<T>(_);217218	/// `system::Config` should always be included in our implied traits.219	#[pallet::config]220	pub trait Config: frame_system::Config {221		/// The overarching event type.222		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;223224		/// The aggregated origin which the dispatch will take.225		type Origin: OriginTrait<PalletsOrigin = Self::PalletsOrigin>226			+ From<Self::PalletsOrigin>227			+ IsType<<Self as system::Config>::Origin>;228229		/// The caller origin, overarching type of all pallets origins.230		type PalletsOrigin: From<system::RawOrigin<Self::AccountId>> + Codec + Clone + Eq + TypeInfo;231232		type Currency: NamedReservableCurrency<Self::AccountId, ReserveIdentifier = ScheduledId>;233234		/// The aggregated call type.235		type Call: Parameter236			+ Dispatchable<Origin = <Self as Config>::Origin, PostInfo = PostDispatchInfo>237			+ GetDispatchInfo238			+ From<system::Call<Self>>;239240		/// The maximum weight that may be scheduled per block for any dispatchables of less241		/// priority than `schedule::HARD_DEADLINE`.242		#[pallet::constant]243		type MaximumWeight: Get<Weight>;244245		/// Required origin to schedule or cancel calls.246		type ScheduleOrigin: EnsureOrigin<<Self as system::Config>::Origin>;247248		/// Compare the privileges of origins.249		///250		/// This will be used when canceling a task, to ensure that the origin that tries251		/// to cancel has greater or equal privileges as the origin that created the scheduled task.252		///253		/// For simplicity the [`EqualPrivilegeOnly`](frame_support::traits::EqualPrivilegeOnly) can254		/// be used. This will only check if two given origins are equal.255		type OriginPrivilegeCmp: PrivilegeCmp<Self::PalletsOrigin>;256257		/// The maximum number of scheduled calls in the queue for a single block.258		/// Not strictly enforced, but used for weight estimation.259		#[pallet::constant]260		type MaxScheduledPerBlock: Get<u32>;261262		/// Weight information for extrinsics in this pallet.263		type WeightInfo: WeightInfo;264265		/// The preimage provider with which we look up call hashes to get the call.266		type PreimageProvider: PreimageProviderAndMaybeRecipient<Self::Hash>;267268		/// If `Some` then the number of blocks to postpone execution for when the item is delayed.269		type NoPreimagePostponement: Get<Option<Self::BlockNumber>>;270271		/// Sponsoring function. In this version sposorship is disabled272		// type SponsorshipHandler: SponsorshipHandler<Self::AccountId, <Self as Config>::Call>;273274		/// The helper type used for custom transaction fee logic.275		type CallExecutor: DispatchCall<Self, H160>;276	}277278	/// A Scheduler-Runtime interface for finer payment handling.279	pub trait DispatchCall<T: frame_system::Config + Config, SelfContainedSignedInfo> {280		/// Lock balance required for transaction payment281		fn reserve_balance(282			id: ScheduledId,283			sponsor: <T as frame_system::Config>::AccountId,284			call: <T as Config>::Call,285			count: u32,286		) -> Result<(), DispatchError>;287288		/// Unlock centain amount from payer289		fn pay_for_call(290			id: ScheduledId,291			sponsor: <T as frame_system::Config>::AccountId,292			call: <T as Config>::Call,293		) -> Result<u128, DispatchError>;294295		/// Resolve the call dispatch, including any post-dispatch operations.296		fn dispatch_call(297			signer: T::AccountId,298			function: <T as Config>::Call,299		) -> Result<300			Result<PostDispatchInfo, DispatchErrorWithPostInfo<PostDispatchInfo>>,301			TransactionValidityError,302		>;303304		/// Cancel schedule reservation and unlock balance305		fn cancel_reserve(306			id: ScheduledId,307			sponsor: <T as frame_system::Config>::AccountId,308		) -> Result<u128, DispatchError>;309	}310311	/// Items to be executed, indexed by the block number that they should be executed on.312	#[pallet::storage]313	pub type Agenda<T: Config> =314		StorageMap<_, Twox64Concat, T::BlockNumber, Vec<Option<ScheduledV3Of<T>>>, ValueQuery>;315316	/// Lookup from identity to the block number and index of the task.317	#[pallet::storage]318	pub(crate) type Lookup<T: Config> =319		StorageMap<_, Twox64Concat, ScheduledId, TaskAddress<T::BlockNumber>>;320321	/// Events type.322	#[pallet::event]323	#[pallet::generate_deposit(pub(super) fn deposit_event)]324	pub enum Event<T: Config> {325		/// Scheduled some task.326		Scheduled { when: T::BlockNumber, index: u32 },327		/// Canceled some task.328		Canceled { when: T::BlockNumber, index: u32 },329		/// Dispatched some task.330		Dispatched {331			task: TaskAddress<T::BlockNumber>,332			id: Option<ScheduledId>,333			result: DispatchResult,334		},335		/// The call for the provided hash was not found so the task has been aborted.336		CallLookupFailed {337			task: TaskAddress<T::BlockNumber>,338			id: Option<ScheduledId>,339			error: LookupError,340		},341	}342343	#[pallet::error]344	pub enum Error<T> {345		/// Failed to schedule a call346		FailedToSchedule,347		/// Cannot find the scheduled call.348		NotFound,349		/// Given target block number is in the past.350		TargetBlockNumberInPast,351		/// Reschedule failed because it does not change scheduled time.352		RescheduleNoChange,353	}354355	#[pallet::hooks]356	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {357		/// Execute the scheduled calls358		fn on_initialize(now: T::BlockNumber) -> Weight {359			let limit = T::MaximumWeight::get();360361			let mut queued = Agenda::<T>::take(now)362				.into_iter()363				.enumerate()364				.filter_map(|(index, s)| Some((index as u32, s?)))365				.collect::<Vec<_>>();366367			if queued.len() as u32 > T::MaxScheduledPerBlock::get() {368				log::warn!(369					target: "runtime::scheduler",370					"Warning: This block has more items queued in Scheduler than \371					expected from the runtime configuration. An update might be needed."372				);373			}374375			queued.sort_by_key(|(_, s)| s.priority);376377			let next = now + One::one();378379			let mut total_weight: Weight = T::WeightInfo::on_initialize(0);380			for (order, (index, mut s)) in queued.into_iter().enumerate() {381				let named = if let Some(ref id) = s.maybe_id {382					Lookup::<T>::remove(id);383					true384				} else {385					false386				};387388				let (call, maybe_completed) = s.call.resolved::<T::PreimageProvider>();389				s.call = call;390391				let resolved = if let Some(completed) = maybe_completed {392					T::PreimageProvider::unrequest_preimage(&completed);393					true394				} else {395					false396				};397				let call = match s.call.as_value().cloned() {398					Some(c) => c,399					None => {400						// Preimage not available - postpone until some block.401						total_weight.saturating_accrue(T::WeightInfo::item(false, named, None));402						if let Some(delay) = T::NoPreimagePostponement::get() {403							let until = now.saturating_add(delay);404							if let Some(ref id) = s.maybe_id {405								let index = Agenda::<T>::decode_len(until).unwrap_or(0);406								Lookup::<T>::insert(id, (until, index as u32));407							}408							Agenda::<T>::append(until, Some(s));409						}410						continue;411					}412				};413414				let periodic = s.maybe_periodic.is_some();415				let call_weight = call.get_dispatch_info().weight;416				let mut item_weight = T::WeightInfo::item(periodic, named, Some(resolved));417				let origin =418					<<T as Config>::Origin as From<T::PalletsOrigin>>::from(s.origin.clone())419						.into();420				if ensure_signed(origin).is_ok() {421					// Weights of Signed dispatches expect their signing account to be whitelisted.422					item_weight.saturating_accrue(T::DbWeight::get().reads_writes(1, 1));423				}424425				// We allow a scheduled call if any is true:426				// - It's priority is `HARD_DEADLINE`427				// - It does not push the weight past the limit.428				// - It is the first item in the schedule429				let hard_deadline = s.priority <= schedule::HARD_DEADLINE;430				let test_weight = total_weight431					.saturating_add(call_weight)432					.saturating_add(item_weight);433				if !hard_deadline && order > 0 && test_weight > limit {434					// Cannot be scheduled this block - postpone until next.435					total_weight.saturating_accrue(T::WeightInfo::item(false, named, None));436					if let Some(ref id) = s.maybe_id {437						// NOTE: We could reasonably not do this (in which case there would be one438						// block where the named and delayed item could not be referenced by name),439						// but we will do it anyway since it should be mostly free in terms of440						// weight and it is slightly cleaner.441						let index = Agenda::<T>::decode_len(next).unwrap_or(0);442						Lookup::<T>::insert(id, (next, index as u32));443					}444					Agenda::<T>::append(next, Some(s));445					continue;446				}447448				// Sender is the account who signed transaction449				let sender = ensure_signed(450					<<T as Config>::Origin as From<T::PalletsOrigin>>::from(s.origin.clone())451						.into(),452				)453				.unwrap();454455				// // if call have id it was be reserved456				// if s.maybe_id.is_some() {457				// 	let _ = T::CallExecutor::pay_for_call(458				// 		s.maybe_id.unwrap(),459				// 		sender.clone(),460				// 		call.clone(),461				// 	);462				// }463464				// Execute transaction via chain default pipeline465				// That means dispatch will be processed like any user's extrinsic e.g. transaction fees will be taken466				let r = T::CallExecutor::dispatch_call(sender, call.clone());467468				let mut actual_call_weight: Weight = item_weight;469				let result: Result<_, DispatchError> = match r {470					Ok(o) => match o {471						Ok(di) => {472							actual_call_weight = di.actual_weight.unwrap_or(item_weight);473							Ok(())474						}475						Err(err) => Err(err.error),476					},477					Err(_) => {478						log::error!(479							target: "runtime::scheduler",480							"Warning: Scheduler has failed to execute a post-dispatch transaction. \481							This block might have become invalid.");482						Err(DispatchError::CannotLookup)483					} // todo possibly force a skip/return here, do something with the error484				};485486				total_weight.saturating_accrue(item_weight);487				total_weight.saturating_accrue(actual_call_weight);488489				Self::deposit_event(Event::Dispatched {490					task: (now, index),491					id: s.maybe_id.clone(),492					result,493				});494495				if let &Some((period, count)) = &s.maybe_periodic {496					if count > 1 {497						s.maybe_periodic = Some((period, count - 1));498					} else {499						s.maybe_periodic = None;500					}501					let wake = now + period;502					// If scheduled is named, place its information in `Lookup`503					if let Some(ref id) = s.maybe_id {504						let wake_index = Agenda::<T>::decode_len(wake).unwrap_or(0);505						Lookup::<T>::insert(id, (wake, wake_index as u32));506					}507					Agenda::<T>::append(wake, Some(s));508				}509			}510			/// Weight should be 0, because transaction already paid511			0512		}513	}514515	#[pallet::call]516	impl<T: Config> Pallet<T> {517		/// Schedule a named task.518		#[pallet::weight(<T as Config>::WeightInfo::schedule_named(T::MaxScheduledPerBlock::get()))]519		pub fn schedule_named(520			origin: OriginFor<T>,521			id: ScheduledId,522			when: T::BlockNumber,523			maybe_periodic: Option<schedule::Period<T::BlockNumber>>,524			priority: schedule::Priority,525			call: Box<CallOrHashOf<T>>,526		) -> DispatchResult {527			T::ScheduleOrigin::ensure_origin(origin.clone())?;528			let origin = <T as Config>::Origin::from(origin);529			Self::do_schedule_named(530				id,531				DispatchTime::At(when),532				maybe_periodic,533				priority,534				origin.caller().clone(),535				*call,536			)?;537			Ok(())538		}539540		/// Cancel a named scheduled task.541		#[pallet::weight(<T as Config>::WeightInfo::cancel_named(T::MaxScheduledPerBlock::get()))]542		pub fn cancel_named(origin: OriginFor<T>, id: ScheduledId) -> DispatchResult {543			T::ScheduleOrigin::ensure_origin(origin.clone())?;544			let origin = <T as Config>::Origin::from(origin);545			Self::do_cancel_named(Some(origin.caller().clone()), id)?;546			Ok(())547		}548549		/// Schedule a named task after a delay.550		///551		/// # <weight>552		/// Same as [`schedule_named`](Self::schedule_named).553		/// # </weight>554		#[pallet::weight(<T as Config>::WeightInfo::schedule_named(T::MaxScheduledPerBlock::get()))]555		pub fn schedule_named_after(556			origin: OriginFor<T>,557			id: ScheduledId,558			after: T::BlockNumber,559			maybe_periodic: Option<schedule::Period<T::BlockNumber>>,560			priority: schedule::Priority,561			call: Box<CallOrHashOf<T>>,562		) -> DispatchResult {563			T::ScheduleOrigin::ensure_origin(origin.clone())?;564			let origin = <T as Config>::Origin::from(origin);565			Self::do_schedule_named(566				id,567				DispatchTime::After(after),568				maybe_periodic,569				priority,570				origin.caller().clone(),571				*call,572			)?;573			Ok(())574		}575	}576}577578impl<T: Config> Pallet<T> {579	#[cfg(feature = "try-runtime")]580	pub fn pre_migrate_to_v3() -> Result<(), &'static str> {581		Ok(())582	}583584	#[cfg(feature = "try-runtime")]585	pub fn post_migrate_to_v3() -> Result<(), &'static str> {586		use frame_support::dispatch::GetStorageVersion;587588		assert!(Self::current_storage_version() == 3);589		for k in Agenda::<T>::iter_keys() {590			let _ = Agenda::<T>::try_get(k).map_err(|()| "Invalid item in Agenda")?;591		}592		Ok(())593	}594595	/// Helper to migrate scheduler when the pallet origin type has changed.596	pub fn migrate_origin<OldOrigin: Into<T::PalletsOrigin> + codec::Decode>() {597		Agenda::<T>::translate::<598			Vec<Option<Scheduled<CallOrHashOf<T>, T::BlockNumber, OldOrigin, T::AccountId>>>,599			_,600		>(|_, agenda| {601			Some(602				agenda603					.into_iter()604					.map(|schedule| {605						schedule.map(|schedule| Scheduled {606							maybe_id: schedule.maybe_id,607							priority: schedule.priority,608							call: schedule.call,609							maybe_periodic: schedule.maybe_periodic,610							origin: schedule.origin.into(),611							_phantom: Default::default(),612						})613					})614					.collect::<Vec<_>>(),615			)616		});617	}618619	fn resolve_time(when: DispatchTime<T::BlockNumber>) -> Result<T::BlockNumber, DispatchError> {620		let now = frame_system::Pallet::<T>::block_number();621622		let when = match when {623			DispatchTime::At(x) => x,624			// The current block has already completed it's scheduled tasks, so625			// Schedule the task at lest one block after this current block.626			DispatchTime::After(x) => now.saturating_add(x).saturating_add(One::one()),627		};628629		if when <= now {630			return Err(Error::<T>::TargetBlockNumberInPast.into());631		}632633		Ok(when)634	}635636	fn do_schedule_named(637		id: ScheduledId,638		when: DispatchTime<T::BlockNumber>,639		maybe_periodic: Option<schedule::Period<T::BlockNumber>>,640		priority: schedule::Priority,641		origin: T::PalletsOrigin,642		call: CallOrHashOf<T>,643	) -> Result<TaskAddress<T::BlockNumber>, DispatchError> {644		// ensure id it is unique645		if Lookup::<T>::contains_key(&id) {646			return Err(Error::<T>::FailedToSchedule)?;647		}648649		let when = Self::resolve_time(when)?;650651		call.ensure_requested::<T::PreimageProvider>();652653		// sanitize maybe_periodic654		let maybe_periodic = maybe_periodic655			.filter(|p| p.1 > 1 && !p.0.is_zero())656			// Remove one from the number of repetitions since we will schedule one now.657			.map(|(p, c)| (p, c - 1));658659		let s = Scheduled {660			maybe_id: Some(id.clone()),661			priority,662			call: call.clone(),663			maybe_periodic,664			origin: origin.clone(),665			_phantom: Default::default(),666		};667668		// reserve balance for periodic execution669		// let sender =670		// 	ensure_signed(<<T as Config>::Origin as From<T::PalletsOrigin>>::from(origin).into())?;671		// let repeats = match maybe_periodic {672		// 	Some(p) => p.1,673		// 	None => 1,674		// };675		// let _ = T::CallExecutor::reserve_balance(676		// 	id.clone(),677		// 	sender,678		// 	call.as_value().unwrap().clone(),679		// 	repeats,680		// );681682		Agenda::<T>::append(when, Some(s));683		let index = Agenda::<T>::decode_len(when).unwrap_or(1) as u32 - 1;684		let address = (when, index);685		Lookup::<T>::insert(&id, &address);686		Self::deposit_event(Event::Scheduled { when, index });687688		Ok(address)689	}690691	fn do_cancel_named(origin: Option<T::PalletsOrigin>, id: ScheduledId) -> DispatchResult {692		Lookup::<T>::try_mutate_exists(id, |lookup| -> DispatchResult {693			if let Some((when, index)) = lookup.take() {694				let i = index as usize;695				Agenda::<T>::try_mutate(when, |agenda| -> DispatchResult {696					if let Some(s) = agenda.get_mut(i) {697						if let (Some(ref o), Some(ref s)) = (origin.clone(), s.borrow()) {698							if matches!(699								T::OriginPrivilegeCmp::cmp_privilege(o, &s.origin),700								Some(Ordering::Less) | None701							) {702								return Err(BadOrigin.into());703							}704							// release balance reserve705							// let sender = ensure_signed(706							// 	<<T as Config>::Origin as From<T::PalletsOrigin>>::from(707							// 		origin.unwrap(),708							// 	)709							// 	.into(),710							// )?;711							// let _ = T::CallExecutor::cancel_reserve(id, sender);712713							s.call.ensure_unrequested::<T::PreimageProvider>();714						}715						*s = None;716					}717					Ok(())718				})?;719720				Self::deposit_event(Event::Canceled { when, index });721				Ok(())722			} else {723				Err(Error::<T>::NotFound)?724			}725		})726	}727}