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// This file is part of Substrate.
// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use crate::{
Config, CoreAssignment, CoreIndex, CoreMask, CoretimeInterface, RCBlockNumberOf, TaskId,
CORE_MASK_BITS,
};
use codec::{Decode, Encode, MaxEncodedLen};
use frame_support::traits::fungible::Inspect;
use frame_system::Config as SConfig;
use scale_info::TypeInfo;
use sp_arithmetic::Perbill;
use sp_core::{ConstU32, RuntimeDebug};
use sp_runtime::BoundedVec;
pub type BalanceOf<T> = <<T as Config>::Currency as Inspect<<T as SConfig>::AccountId>>::Balance;
pub type RelayBalanceOf<T> = <<T as Config>::Coretime as CoretimeInterface>::Balance;
pub type RelayBlockNumberOf<T> = RCBlockNumberOf<<T as Config>::Coretime>;
pub type RelayAccountIdOf<T> = <<T as Config>::Coretime as CoretimeInterface>::AccountId;
/// Relay-chain block number with a fixed divisor of Config::TimeslicePeriod.
pub type Timeslice = u32;
/// Counter for the total number of set bits over every core's `CoreMask`. `u32` so we don't
/// ever get an overflow. This is 1/80th of a Polkadot Core per timeslice. Assuming timeslices are
/// 80 blocks, then this indicates usage of a single core one time over a timeslice.
pub type CoreMaskBitCount = u32;
/// The same as `CoreMaskBitCount` but signed.
pub type SignedCoreMaskBitCount = i32;
/// Whether a core assignment is revokable or not.
#[derive(Encode, Decode, Copy, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub enum Finality {
/// The region remains with the same owner allowing the assignment to be altered.
Provisional,
/// The region is removed; the assignment may be eligible for renewal.
Final,
}
/// Self-describing identity for a Region of Bulk Coretime.
#[derive(Encode, Decode, Copy, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct RegionId {
/// The timeslice at which this Region begins.
pub begin: Timeslice,
/// The index of the Polkadot Core on which this Region will be scheduled.
pub core: CoreIndex,
/// The regularity parts in which this Region will be scheduled.
pub mask: CoreMask,
}
impl From<u128> for RegionId {
fn from(x: u128) -> Self {
Self { begin: (x >> 96) as u32, core: (x >> 80) as u16, mask: x.into() }
}
}
impl From<RegionId> for u128 {
fn from(x: RegionId) -> Self {
(x.begin as u128) << 96 | (x.core as u128) << 80 | u128::from(x.mask)
}
}
#[test]
fn region_id_converts_u128() {
let r = RegionId { begin: 0x12345678u32, core: 0xabcdu16, mask: 0xdeadbeefcafef00d0123.into() };
let u = 0x12345678_abcd_deadbeefcafef00d0123u128;
assert_eq!(RegionId::from(u), r);
assert_eq!(u128::from(r), u);
}
/// The rest of the information describing a Region.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct RegionRecord<AccountId, Balance> {
/// The end of the Region.
pub end: Timeslice,
/// The owner of the Region.
pub owner: Option<AccountId>,
/// The amount paid to Polkadot for this Region, or `None` if renewal is not allowed.
pub paid: Option<Balance>,
}
pub type RegionRecordOf<T> = RegionRecord<<T as SConfig>::AccountId, BalanceOf<T>>;
/// An distinct item which can be scheduled on a Polkadot Core.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct ScheduleItem {
/// The regularity parts in which this Item will be scheduled on the Core.
pub mask: CoreMask,
/// The job that the Core should be doing.
pub assignment: CoreAssignment,
}
pub type Schedule = BoundedVec<ScheduleItem, ConstU32<{ CORE_MASK_BITS as u32 }>>;
/// The record body of a Region which was contributed to the Instantaneous Coretime Pool. This helps
/// with making pro rata payments to contributors.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct ContributionRecord<AccountId> {
/// The end of the Region contributed.
pub length: Timeslice,
/// The identity of the contributor.
pub payee: AccountId,
}
pub type ContributionRecordOf<T> = ContributionRecord<<T as SConfig>::AccountId>;
/// A per-timeslice bookkeeping record for tracking Instantaneous Coretime Pool activity and
/// making proper payments to contributors.
#[derive(Encode, Decode, Clone, Default, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct InstaPoolHistoryRecord<Balance> {
/// The total amount of Coretime (measured in Core Mask Bits minus any contributions which have
/// already been paid out.
pub private_contributions: CoreMaskBitCount,
/// The total amount of Coretime (measured in Core Mask Bits contributed by the Polkadot System
/// in this timeslice.
pub system_contributions: CoreMaskBitCount,
/// The payout remaining for the `private_contributions`, or `None` if the revenue is not yet
/// known.
pub maybe_payout: Option<Balance>,
}
pub type InstaPoolHistoryRecordOf<T> = InstaPoolHistoryRecord<BalanceOf<T>>;
/// How much of a core has been assigned or, if completely assigned, the workload itself.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub enum CompletionStatus {
/// The core is not fully assigned; the inner is the parts which have.
Partial(CoreMask),
/// The core is fully assigned; the inner is the workload which has been assigned.
Complete(Schedule),
}
impl CompletionStatus {
/// Return reference to the complete workload, or `None` if incomplete.
pub fn complete(&self) -> Option<&Schedule> {
match self {
Self::Complete(s) => Some(s),
Self::Partial(_) => None,
}
}
/// Return the complete workload, or `None` if incomplete.
pub fn drain_complete(self) -> Option<Schedule> {
match self {
Self::Complete(s) => Some(s),
Self::Partial(_) => None,
}
}
}
/// The identity of a possibly renewable Core workload.
#[derive(Encode, Decode, Copy, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct PotentialRenewalId {
/// The core whose workload at the sale ending with `when` may be renewed to begin at `when`.
pub core: CoreIndex,
/// The point in time that the renewable workload on `core` ends and a fresh renewal may begin.
pub when: Timeslice,
}
/// A record of a potential renewal.
///
/// The renewal will only actually be allowed if `CompletionStatus` is `Complete` at the time of
/// renewal.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct PotentialRenewalRecord<Balance> {
/// The price for which the next renewal can be made.
pub price: Balance,
/// The workload which will be scheduled on the Core in the case a renewal is made, or if
/// incomplete, then the parts of the core which have been scheduled.
pub completion: CompletionStatus,
}
pub type PotentialRenewalRecordOf<T> = PotentialRenewalRecord<BalanceOf<T>>;
/// General status of the system.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct StatusRecord {
/// The total number of cores which can be assigned (one plus the maximum index which can
/// be used in `Coretime::assign`).
pub core_count: CoreIndex,
/// The current size of the Instantaneous Coretime Pool, measured in
/// Core Mask Bits.
pub private_pool_size: CoreMaskBitCount,
/// The current amount of the Instantaneous Coretime Pool which is provided by the Polkadot
/// System, rather than provided as a result of privately operated Coretime.
pub system_pool_size: CoreMaskBitCount,
/// The last (Relay-chain) timeslice which we committed to the Relay-chain.
pub last_committed_timeslice: Timeslice,
/// The timeslice of the last time we ticked.
pub last_timeslice: Timeslice,
}
/// A record of flux in the InstaPool.
#[derive(
Encode, Decode, Clone, Copy, Default, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen,
)]
pub struct PoolIoRecord {
/// The total change of the portion of the pool supplied by purchased Bulk Coretime, measured
/// in Core Mask Bits.
pub private: SignedCoreMaskBitCount,
/// The total change of the portion of the pool supplied by the Polkadot System, measured in
/// Core Mask Bits.
pub system: SignedCoreMaskBitCount,
}
/// The status of a Bulk Coretime Sale.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct SaleInfoRecord<Balance, RelayBlockNumber> {
/// The relay block number at which the sale will/did start.
pub sale_start: RelayBlockNumber,
/// The length in blocks of the Leadin Period (where the price is decreasing).
pub leadin_length: RelayBlockNumber,
/// The price of Bulk Coretime after the Leadin Period.
pub end_price: Balance,
/// The first timeslice of the Regions which are being sold in this sale.
pub region_begin: Timeslice,
/// The timeslice on which the Regions which are being sold in the sale terminate. (i.e. One
/// after the last timeslice which the Regions control.)
pub region_end: Timeslice,
/// The number of cores we want to sell, ideally. Selling this amount would result in no
/// change to the price for the next sale.
pub ideal_cores_sold: CoreIndex,
/// Number of cores which are/have been offered for sale.
pub cores_offered: CoreIndex,
/// The index of the first core which is for sale. Core of Regions which are sold have
/// incrementing indices from this.
pub first_core: CoreIndex,
/// The price at which cores have been sold out.
///
/// Will only be `None` if no core was offered for sale.
pub sellout_price: Option<Balance>,
/// Number of cores which have been sold; never more than cores_offered.
pub cores_sold: CoreIndex,
}
pub type SaleInfoRecordOf<T> = SaleInfoRecord<BalanceOf<T>, RelayBlockNumberOf<T>>;
/// Record for Polkadot Core reservations (generally tasked with the maintenance of System
/// Chains).
pub type ReservationsRecord<Max> = BoundedVec<Schedule, Max>;
pub type ReservationsRecordOf<T> = ReservationsRecord<<T as Config>::MaxReservedCores>;
/// Information on a single legacy lease.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct LeaseRecordItem {
/// The timeslice until the lease is valid.
pub until: Timeslice,
/// The task which the lease is for.
pub task: TaskId,
}
/// Record for Polkadot Core legacy leases.
pub type LeasesRecord<Max> = BoundedVec<LeaseRecordItem, Max>;
pub type LeasesRecordOf<T> = LeasesRecord<<T as Config>::MaxLeasedCores>;
/// Record for On demand core sales.
///
/// The blocknumber is the relay chain block height `until` which the original request
/// for revenue was made.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct OnDemandRevenueRecord<RelayBlockNumber, RelayBalance> {
/// The height of the Relay-chain at the time the revenue request was made.
pub until: RelayBlockNumber,
/// The accumulated balance of on demand sales made on the relay chain.
pub amount: RelayBalance,
}
pub type OnDemandRevenueRecordOf<T> =
OnDemandRevenueRecord<RelayBlockNumberOf<T>, RelayBalanceOf<T>>;
/// Configuration of this pallet.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct ConfigRecord<RelayBlockNumber> {
/// The number of Relay-chain blocks in advance which scheduling should be fixed and the
/// `Coretime::assign` API used to inform the Relay-chain.
pub advance_notice: RelayBlockNumber,
/// The length in blocks of the Interlude Period for forthcoming sales.
pub interlude_length: RelayBlockNumber,
/// The length in blocks of the Leadin Period for forthcoming sales.
pub leadin_length: RelayBlockNumber,
/// The length in timeslices of Regions which are up for sale in forthcoming sales.
pub region_length: Timeslice,
/// The proportion of cores available for sale which should be sold.
///
/// If more cores are sold than this, then further sales will no longer be considered in
/// determining the sellout price. In other words the sellout price will be the last price
/// paid, without going over this limit.
pub ideal_bulk_proportion: Perbill,
/// An artificial limit to the number of cores which are allowed to be sold. If `Some` then
/// no more cores will be sold than this.
pub limit_cores_offered: Option<CoreIndex>,
/// The amount by which the renewal price increases each sale period.
pub renewal_bump: Perbill,
/// The duration by which rewards for contributions to the InstaPool must be collected.
pub contribution_timeout: Timeslice,
}
pub type ConfigRecordOf<T> = ConfigRecord<RelayBlockNumberOf<T>>;
impl<RelayBlockNumber> ConfigRecord<RelayBlockNumber>
where
RelayBlockNumber: sp_arithmetic::traits::Zero,
{
/// Check the config for basic validity constraints.
pub(crate) fn validate(&self) -> Result<(), ()> {
if self.leadin_length.is_zero() {
return Err(())
}
Ok(())
}
}
/// A record containing information regarding auto-renewal for a specific core.
#[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
pub struct AutoRenewalRecord {
/// The core for which auto renewal is enabled.
pub core: CoreIndex,
/// The task assigned to the core. We keep track of it so we don't have to look it up when
/// performing auto-renewal.
pub task: TaskId,
/// Specifies when the upcoming renewal should be performed. This is used for lease holding
/// tasks to ensure that the renewal process does not begin until the lease expires.
pub next_renewal: Timeslice,
}