git.delta.rocks / unique-network / refs/commits / d7a4e69fe08d

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;154155pub(crate) trait MarginalWeightInfo: WeightInfo {156	fn item(periodic: bool, named: bool, resolved: Option<bool>) -> Weight {157		match (periodic, named, resolved) {158			(_, false, None) => Self::on_initialize_aborted(2) - Self::on_initialize_aborted(1),159			(_, true, None) => {160				Self::on_initialize_named_aborted(2) - Self::on_initialize_named_aborted(1)161			}162			(false, false, Some(false)) => Self::on_initialize(2) - Self::on_initialize(1),163			(false, true, Some(false)) => {164				Self::on_initialize_named(2) - Self::on_initialize_named(1)165			}166			(true, false, Some(false)) => {167				Self::on_initialize_periodic(2) - Self::on_initialize_periodic(1)168			}169			(true, true, Some(false)) => {170				Self::on_initialize_periodic_named_resolved(2)171					- Self::on_initialize_periodic_named_resolved(1)172			}173			(false, false, Some(true)) => Self::on_initialize(2) - Self::on_initialize(1),174			(false, true, Some(true)) => {175				Self::on_initialize_named_resolved(2) - Self::on_initialize_named_resolved(1)176			}177			(true, false, Some(true)) => {178				Self::on_initialize_periodic_resolved(2) - Self::on_initialize_periodic_resolved(1)179			}180			(true, true, Some(true)) => {181				Self::on_initialize_periodic_named_resolved(2)182					- Self::on_initialize_periodic_named_resolved(1)183			}184		}185	}186}187impl<T: WeightInfo> MarginalWeightInfo for T {}188189#[frame_support::pallet]190pub mod pallet {191	use super::*;192	use frame_support::{193		dispatch::PostDispatchInfo,194		pallet_prelude::*,195		traits::{schedule::LookupError, PreimageProvider},196	};197	use frame_system::pallet_prelude::*;198199	/// The current storage version.200	const STORAGE_VERSION: StorageVersion = StorageVersion::new(3);201202	#[pallet::pallet]203	#[pallet::generate_store(pub(super) trait Store)]204	#[pallet::storage_version(STORAGE_VERSION)]205	#[pallet::without_storage_info]206	pub struct Pallet<T>(_);207208	/// `system::Config` should always be included in our implied traits.209	#[pallet::config]210	pub trait Config: frame_system::Config {211		/// The overarching event type.212		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;213214		/// The aggregated origin which the dispatch will take.215		type Origin: OriginTrait<PalletsOrigin = Self::PalletsOrigin>216			+ From<Self::PalletsOrigin>217			+ IsType<<Self as system::Config>::Origin>;218219		/// The caller origin, overarching type of all pallets origins.220		type PalletsOrigin: From<system::RawOrigin<Self::AccountId>> + Codec + Clone + Eq + TypeInfo;221222		type Currency: NamedReservableCurrency<Self::AccountId, ReserveIdentifier = ScheduledId>;223224		/// The aggregated call type.225		type Call: Parameter226			+ Dispatchable<Origin = <Self as Config>::Origin, PostInfo = PostDispatchInfo>227			+ GetDispatchInfo228			+ From<system::Call<Self>>;229230		/// The maximum weight that may be scheduled per block for any dispatchables of less231		/// priority than `schedule::HARD_DEADLINE`.232		#[pallet::constant]233		type MaximumWeight: Get<Weight>;234235		/// Required origin to schedule or cancel calls.236		type ScheduleOrigin: EnsureOrigin<<Self as system::Config>::Origin>;237238		/// Compare the privileges of origins.239		///240		/// This will be used when canceling a task, to ensure that the origin that tries241		/// to cancel has greater or equal privileges as the origin that created the scheduled task.242		///243		/// For simplicity the [`EqualPrivilegeOnly`](frame_support::traits::EqualPrivilegeOnly) can244		/// be used. This will only check if two given origins are equal.245		type OriginPrivilegeCmp: PrivilegeCmp<Self::PalletsOrigin>;246247		/// The maximum number of scheduled calls in the queue for a single block.248		/// Not strictly enforced, but used for weight estimation.249		#[pallet::constant]250		type MaxScheduledPerBlock: Get<u32>;251252		/// Weight information for extrinsics in this pallet.253		type WeightInfo: WeightInfo;254255		/// The preimage provider with which we look up call hashes to get the call.256		type PreimageProvider: PreimageProviderAndMaybeRecipient<Self::Hash>;257258		/// If `Some` then the number of blocks to postpone execution for when the item is delayed.259		type NoPreimagePostponement: Get<Option<Self::BlockNumber>>;260261		/// Sponsoring function.262		// type SponsorshipHandler: SponsorshipHandler<Self::AccountId, <Self as Config>::Call>;263264		/// The helper type used for custom transaction fee logic.265		type CallExecutor: DispatchCall<Self, H160>;266	}267268	/// A Scheduler-Runtime interface for finer payment handling.269	pub trait DispatchCall<T: frame_system::Config + Config, SelfContainedSignedInfo> {270		fn reserve_balance(271			id: ScheduledId,272			sponsor: <T as frame_system::Config>::AccountId,273			call: <T as Config>::Call,274			count: u32,275		) -> Result<(), DispatchError>;276277		/// Unlock centain amount from payer278		fn pay_for_call(279			id: ScheduledId,280			sponsor: <T as frame_system::Config>::AccountId,281			call: <T as Config>::Call,282		) -> Result<u128, DispatchError>;283284		/// Resolve the call dispatch, including any post-dispatch operations.285		fn dispatch_call(286			signer: T::AccountId,287			function: <T as Config>::Call,288		) -> Result<289			Result<PostDispatchInfo, DispatchErrorWithPostInfo<PostDispatchInfo>>,290			TransactionValidityError,291		>;292293		fn cancel_reserve(294			id: ScheduledId,295			sponsor: <T as frame_system::Config>::AccountId,296		) -> Result<u128, DispatchError>;297	}298299	/// Items to be executed, indexed by the block number that they should be executed on.300	#[pallet::storage]301	pub type Agenda<T: Config> =302		StorageMap<_, Twox64Concat, T::BlockNumber, Vec<Option<ScheduledV3Of<T>>>, ValueQuery>;303304	/// Lookup from identity to the block number and index of the task.305	#[pallet::storage]306	pub(crate) type Lookup<T: Config> =307		StorageMap<_, Twox64Concat, ScheduledId, TaskAddress<T::BlockNumber>>;308309	/// Events type.310	#[pallet::event]311	#[pallet::generate_deposit(pub(super) fn deposit_event)]312	pub enum Event<T: Config> {313		/// Scheduled some task.314		Scheduled { when: T::BlockNumber, index: u32 },315		/// Canceled some task.316		Canceled { when: T::BlockNumber, index: u32 },317		/// Dispatched some task.318		Dispatched {319			task: TaskAddress<T::BlockNumber>,320			id: Option<ScheduledId>,321			result: DispatchResult,322		},323		/// The call for the provided hash was not found so the task has been aborted.324		CallLookupFailed {325			task: TaskAddress<T::BlockNumber>,326			id: Option<ScheduledId>,327			error: LookupError,328		},329	}330331	#[pallet::error]332	pub enum Error<T> {333		/// Failed to schedule a call334		FailedToSchedule,335		/// Cannot find the scheduled call.336		NotFound,337		/// Given target block number is in the past.338		TargetBlockNumberInPast,339		/// Reschedule failed because it does not change scheduled time.340		RescheduleNoChange,341	}342343	#[pallet::hooks]344	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {345		/// Execute the scheduled calls346		fn on_initialize(now: T::BlockNumber) -> Weight {347			let limit = T::MaximumWeight::get();348349			let mut queued = Agenda::<T>::take(now)350				.into_iter()351				.enumerate()352				.filter_map(|(index, s)| Some((index as u32, s?)))353				.collect::<Vec<_>>();354355			if queued.len() as u32 > T::MaxScheduledPerBlock::get() {356				log::warn!(357					target: "runtime::scheduler",358					"Warning: This block has more items queued in Scheduler than \359					expected from the runtime configuration. An update might be needed."360				);361			}362363			queued.sort_by_key(|(_, s)| s.priority);364365			let next = now + One::one();366367			let mut total_weight: Weight = T::WeightInfo::on_initialize(0);368			for (order, (index, mut s)) in queued.into_iter().enumerate() {369				let named = if let Some(ref id) = s.maybe_id {370					Lookup::<T>::remove(id);371					true372				} else {373					false374				};375376				let (call, maybe_completed) = s.call.resolved::<T::PreimageProvider>();377				s.call = call;378379				let resolved = if let Some(completed) = maybe_completed {380					T::PreimageProvider::unrequest_preimage(&completed);381					true382				} else {383					false384				};385				let call = match s.call.as_value().cloned() {386					Some(c) => c,387					None => {388						// Preimage not available - postpone until some block.389						total_weight.saturating_accrue(T::WeightInfo::item(false, named, None));390						if let Some(delay) = T::NoPreimagePostponement::get() {391							let until = now.saturating_add(delay);392							if let Some(ref id) = s.maybe_id {393								let index = Agenda::<T>::decode_len(until).unwrap_or(0);394								Lookup::<T>::insert(id, (until, index as u32));395							}396							Agenda::<T>::append(until, Some(s));397						}398						continue;399					}400				};401402				let periodic = s.maybe_periodic.is_some();403				let call_weight = call.get_dispatch_info().weight;404				let mut item_weight = T::WeightInfo::item(periodic, named, Some(resolved));405				let origin =406					<<T as Config>::Origin as From<T::PalletsOrigin>>::from(s.origin.clone())407						.into();408				if ensure_signed(origin).is_ok() {409					// Weights of Signed dispatches expect their signing account to be whitelisted.410					item_weight.saturating_accrue(T::DbWeight::get().reads_writes(1, 1));411				}412413				// We allow a scheduled call if any is true:414				// - It's priority is `HARD_DEADLINE`415				// - It does not push the weight past the limit.416				// - It is the first item in the schedule417				let hard_deadline = s.priority <= schedule::HARD_DEADLINE;418				let test_weight = total_weight419					.saturating_add(call_weight)420					.saturating_add(item_weight);421				if !hard_deadline && order > 0 && test_weight > limit {422					// Cannot be scheduled this block - postpone until next.423					total_weight.saturating_accrue(T::WeightInfo::item(false, named, None));424					if let Some(ref id) = s.maybe_id {425						// NOTE: We could reasonably not do this (in which case there would be one426						// block where the named and delayed item could not be referenced by name),427						// but we will do it anyway since it should be mostly free in terms of428						// weight and it is slightly cleaner.429						let index = Agenda::<T>::decode_len(next).unwrap_or(0);430						Lookup::<T>::insert(id, (next, index as u32));431					}432					Agenda::<T>::append(next, Some(s));433					continue;434				}435436				let sender = ensure_signed(437					<<T as Config>::Origin as From<T::PalletsOrigin>>::from(s.origin.clone())438						.into(),439				)440				.unwrap();441442				// // if call have id it was be reserved443				// if s.maybe_id.is_some() {444				// 	let _ = T::CallExecutor::pay_for_call(445				// 		s.maybe_id.unwrap(),446				// 		sender.clone(),447				// 		call.clone(),448				// 	);449				// }450451				// Execute transaction via chain default pipeline452				// That means dispatch will be processed like any user's extrinsic e.g. transaction fees will be taken453				let r = T::CallExecutor::dispatch_call(sender, call.clone());454455				let mut actual_call_weight: Weight = item_weight;456				let result: Result<_, DispatchError> = match r {457					Ok(o) => match o {458						Ok(di) => {459							actual_call_weight = di.actual_weight.unwrap_or(item_weight);460							Ok(())461						}462						Err(err) => Err(err.error),463					},464					Err(_) => {465						log::error!(466							target: "runtime::scheduler",467							"Warning: Scheduler has failed to execute a post-dispatch transaction. \468							This block might have become invalid.");469						Err(DispatchError::CannotLookup)470					} // todo possibly force a skip/return here, do something with the error471				};472473				total_weight.saturating_accrue(item_weight);474				total_weight.saturating_accrue(actual_call_weight);475476				Self::deposit_event(Event::Dispatched {477					task: (now, index),478					id: s.maybe_id.clone(),479					result,480				});481482				if let &Some((period, count)) = &s.maybe_periodic {483					if count > 1 {484						s.maybe_periodic = Some((period, count - 1));485					} else {486						s.maybe_periodic = None;487					}488					let wake = now + period;489					// If scheduled is named, place its information in `Lookup`490					if let Some(ref id) = s.maybe_id {491						let wake_index = Agenda::<T>::decode_len(wake).unwrap_or(0);492						Lookup::<T>::insert(id, (wake, wake_index as u32));493					}494					Agenda::<T>::append(wake, Some(s));495				}496			}497			/// Weight should be 0, because transaction already paid498			0499			//total_weight500		}501	}502503	#[pallet::call]504	impl<T: Config> Pallet<T> {505		/// Schedule a named task.506		#[pallet::weight(<T as Config>::WeightInfo::schedule_named(T::MaxScheduledPerBlock::get()))]507		pub fn schedule_named(508			origin: OriginFor<T>,509			id: ScheduledId,510			when: T::BlockNumber,511			maybe_periodic: Option<schedule::Period<T::BlockNumber>>,512			priority: schedule::Priority,513			call: Box<CallOrHashOf<T>>,514		) -> DispatchResult {515			T::ScheduleOrigin::ensure_origin(origin.clone())?;516			let origin = <T as Config>::Origin::from(origin);517			Self::do_schedule_named(518				id,519				DispatchTime::At(when),520				maybe_periodic,521				priority,522				origin.caller().clone(),523				*call,524			)?;525			Ok(())526		}527528		/// Cancel a named scheduled task.529		#[pallet::weight(<T as Config>::WeightInfo::cancel_named(T::MaxScheduledPerBlock::get()))]530		pub fn cancel_named(origin: OriginFor<T>, id: ScheduledId) -> DispatchResult {531			T::ScheduleOrigin::ensure_origin(origin.clone())?;532			let origin = <T as Config>::Origin::from(origin);533			Self::do_cancel_named(Some(origin.caller().clone()), id)?;534			Ok(())535		}536537		/// Schedule a named task after a delay.538		///539		/// # <weight>540		/// Same as [`schedule_named`](Self::schedule_named).541		/// # </weight>542		#[pallet::weight(<T as Config>::WeightInfo::schedule_named(T::MaxScheduledPerBlock::get()))]543		pub fn schedule_named_after(544			origin: OriginFor<T>,545			id: ScheduledId,546			after: T::BlockNumber,547			maybe_periodic: Option<schedule::Period<T::BlockNumber>>,548			priority: schedule::Priority,549			call: Box<CallOrHashOf<T>>,550		) -> DispatchResult {551			T::ScheduleOrigin::ensure_origin(origin.clone())?;552			let origin = <T as Config>::Origin::from(origin);553			Self::do_schedule_named(554				id,555				DispatchTime::After(after),556				maybe_periodic,557				priority,558				origin.caller().clone(),559				*call,560			)?;561			Ok(())562		}563	}564}565566impl<T: Config> Pallet<T> {567	#[cfg(feature = "try-runtime")]568	pub fn pre_migrate_to_v3() -> Result<(), &'static str> {569		Ok(())570	}571572	#[cfg(feature = "try-runtime")]573	pub fn post_migrate_to_v3() -> Result<(), &'static str> {574		use frame_support::dispatch::GetStorageVersion;575576		assert!(Self::current_storage_version() == 3);577		for k in Agenda::<T>::iter_keys() {578			let _ = Agenda::<T>::try_get(k).map_err(|()| "Invalid item in Agenda")?;579		}580		Ok(())581	}582583	/// Helper to migrate scheduler when the pallet origin type has changed.584	pub fn migrate_origin<OldOrigin: Into<T::PalletsOrigin> + codec::Decode>() {585		Agenda::<T>::translate::<586			Vec<Option<Scheduled<CallOrHashOf<T>, T::BlockNumber, OldOrigin, T::AccountId>>>,587			_,588		>(|_, agenda| {589			Some(590				agenda591					.into_iter()592					.map(|schedule| {593						schedule.map(|schedule| Scheduled {594							maybe_id: schedule.maybe_id,595							priority: schedule.priority,596							call: schedule.call,597							maybe_periodic: schedule.maybe_periodic,598							origin: schedule.origin.into(),599							_phantom: Default::default(),600						})601					})602					.collect::<Vec<_>>(),603			)604		});605	}606607	fn resolve_time(when: DispatchTime<T::BlockNumber>) -> Result<T::BlockNumber, DispatchError> {608		let now = frame_system::Pallet::<T>::block_number();609610		let when = match when {611			DispatchTime::At(x) => x,612			// The current block has already completed it's scheduled tasks, so613			// Schedule the task at lest one block after this current block.614			DispatchTime::After(x) => now.saturating_add(x).saturating_add(One::one()),615		};616617		if when <= now {618			return Err(Error::<T>::TargetBlockNumberInPast.into());619		}620621		Ok(when)622	}623624	fn do_schedule_named(625		id: ScheduledId,626		when: DispatchTime<T::BlockNumber>,627		maybe_periodic: Option<schedule::Period<T::BlockNumber>>,628		priority: schedule::Priority,629		origin: T::PalletsOrigin,630		call: CallOrHashOf<T>,631	) -> Result<TaskAddress<T::BlockNumber>, DispatchError> {632		// ensure id it is unique633		if Lookup::<T>::contains_key(&id) {634			return Err(Error::<T>::FailedToSchedule)?;635		}636637		let when = Self::resolve_time(when)?;638639		call.ensure_requested::<T::PreimageProvider>();640641		// sanitize maybe_periodic642		let maybe_periodic = maybe_periodic643			.filter(|p| p.1 > 1 && !p.0.is_zero())644			// Remove one from the number of repetitions since we will schedule one now.645			.map(|(p, c)| (p, c - 1));646647		let s = Scheduled {648			maybe_id: Some(id.clone()),649			priority,650			call: call.clone(),651			maybe_periodic,652			origin: origin.clone(),653			_phantom: Default::default(),654		};655656		// reserve balance for periodic execution657		// let sender =658		// 	ensure_signed(<<T as Config>::Origin as From<T::PalletsOrigin>>::from(origin).into())?;659		// let repeats = match maybe_periodic {660		// 	Some(p) => p.1,661		// 	None => 1,662		// };663		// let _ = T::CallExecutor::reserve_balance(664		// 	id.clone(),665		// 	sender,666		// 	call.as_value().unwrap().clone(),667		// 	repeats,668		// );669670		Agenda::<T>::append(when, Some(s));671		let index = Agenda::<T>::decode_len(when).unwrap_or(1) as u32 - 1;672		let address = (when, index);673		Lookup::<T>::insert(&id, &address);674		Self::deposit_event(Event::Scheduled { when, index });675676		Ok(address)677	}678679	fn do_cancel_named(origin: Option<T::PalletsOrigin>, id: ScheduledId) -> DispatchResult {680		Lookup::<T>::try_mutate_exists(id, |lookup| -> DispatchResult {681			if let Some((when, index)) = lookup.take() {682				let i = index as usize;683				Agenda::<T>::try_mutate(when, |agenda| -> DispatchResult {684					if let Some(s) = agenda.get_mut(i) {685						if let (Some(ref o), Some(ref s)) = (origin.clone(), s.borrow()) {686							if matches!(687								T::OriginPrivilegeCmp::cmp_privilege(o, &s.origin),688								Some(Ordering::Less) | None689							) {690								return Err(BadOrigin.into());691							}692							// release balance reserve693							// let sender = ensure_signed(694							// 	<<T as Config>::Origin as From<T::PalletsOrigin>>::from(695							// 		origin.unwrap(),696							// 	)697							// 	.into(),698							// )?;699							// let _ = T::CallExecutor::cancel_reserve(id, sender);700701							s.call.ensure_unrequested::<T::PreimageProvider>();702						}703						*s = None;704					}705					Ok(())706				})?;707708				Self::deposit_event(Event::Canceled { when, index });709				Ok(())710			} else {711				Err(Error::<T>::NotFound)?712			}713		})714	}715}