lib.rs

// Copyright 2017-2020 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/>.

//! The Polkadot runtime. This can be compiled with `#[no_std]`, ready for Wasm.

#![cfg_attr(not(feature = "std"), no_std)]
// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
#![recursion_limit = "256"]

use pallet_transaction_payment::CurrencyAdapter;
use sp_std::prelude::*;
use sp_std::collections::btree_map::BTreeMap;
use parity_scale_codec::{Encode, Decode};
use primitives::v1::{
	AccountId, AccountIndex, Balance, BlockNumber, CandidateEvent, CommittedCandidateReceipt,
	CoreState, GroupRotationInfo, Hash, Id, Moment, Nonce, OccupiedCoreAssumption,
	PersistedValidationData, Signature, ValidationCode, ValidatorId, ValidatorIndex,
	InboundDownwardMessage, InboundHrmpMessage, SessionInfo,
};
use runtime_common::{
	paras_sudo_wrapper, paras_registrar, auctions, crowdloan, slots,
	SlowAdjustingFeeUpdate, CurrencyToVote,
	impls::ToAuthor,
	BlockHashCount, BlockWeights, BlockLength, RocksDbWeight, OffchainSolutionWeightLimit,
};
use sp_runtime::{
	create_runtime_str, generic, impl_opaque_keys,
	ApplyExtrinsicResult, KeyTypeId, Perbill, curve::PiecewiseLinear, ModuleId,
	transaction_validity::{TransactionValidity, TransactionSource, TransactionPriority},
	traits::{
		BlakeTwo256, Block as BlockT, OpaqueKeys, ConvertInto, AccountIdLookup,
		Extrinsic as ExtrinsicT, SaturatedConversion, Verify,
	},
};
#[cfg(feature = "runtime-benchmarks")]
use sp_runtime::RuntimeString;
use sp_version::RuntimeVersion;
use pallet_grandpa::{AuthorityId as GrandpaId, fg_primitives};
#[cfg(any(feature = "std", test))]
use sp_version::NativeVersion;
use sp_core::OpaqueMetadata;
use sp_staking::SessionIndex;
use frame_support::{
	parameter_types, construct_runtime, RuntimeDebug,
	traits::{KeyOwnerProofSystem, Randomness, Filter, InstanceFilter},
	weights::Weight,
};
use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
use authority_discovery_primitives::AuthorityId as AuthorityDiscoveryId;
use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
use pallet_session::historical as session_historical;
use frame_system::{EnsureRoot};

#[cfg(feature = "std")]
pub use pallet_staking::StakerStatus;
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;
pub use pallet_timestamp::Call as TimestampCall;
pub use pallet_balances::Call as BalancesCall;

use runtime_parachains::origin as parachains_origin;
use runtime_parachains::configuration as parachains_configuration;
use runtime_parachains::shared as parachains_shared;
use runtime_parachains::inclusion as parachains_inclusion;
use runtime_parachains::inclusion_inherent as parachains_inclusion_inherent;
use runtime_parachains::initializer as parachains_initializer;
use runtime_parachains::session_info as parachains_session_info;
use runtime_parachains::paras as parachains_paras;
use runtime_parachains::dmp as parachains_dmp;
use runtime_parachains::ump as parachains_ump;
use runtime_parachains::hrmp as parachains_hrmp;
use runtime_parachains::scheduler as parachains_scheduler;

/// Constant values used within the runtime.
pub mod constants;
use constants::{time::*, currency::*, fee::*};

// Weights used in the runtime
mod weights;

// Make the WASM binary available.
#[cfg(feature = "std")]
include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));

/// Runtime version (Westend).
pub const VERSION: RuntimeVersion = RuntimeVersion {
	spec_name: create_runtime_str!("westend"),
	impl_name: create_runtime_str!("parity-westend"),
	authoring_version: 2,
	spec_version: 50,
	impl_version: 0,
	#[cfg(not(feature = "disable-runtime-api"))]
	apis: RUNTIME_API_VERSIONS,
	#[cfg(feature = "disable-runtime-api")]
	apis: version::create_apis_vec![[]],
	transaction_version: 4,
};

/// The BABE epoch configuration at genesis.
pub const BABE_GENESIS_EPOCH_CONFIG: babe_primitives::BabeEpochConfiguration =
	babe_primitives::BabeEpochConfiguration {
		c: PRIMARY_PROBABILITY,
		allowed_slots: babe_primitives::AllowedSlots::PrimaryAndSecondaryVRFSlots
	};

/// Native version.
#[cfg(any(feature = "std", test))]
pub fn native_version() -> NativeVersion {
	NativeVersion {
		runtime_version: VERSION,
		can_author_with: Default::default(),
	}
}

/// Accept all transactions.
pub struct BaseFilter;
impl Filter<Call> for BaseFilter {
	fn filter(_: &Call) -> bool {
		true
	}
}

parameter_types! {
	pub const Version: RuntimeVersion = VERSION;
	pub const SS58Prefix: u8 = 42;
}

impl frame_system::Config for Runtime {
	type BaseCallFilter = BaseFilter;
	type BlockWeights = BlockWeights;
	type BlockLength = BlockLength;
	type Origin = Origin;
	type Call = Call;
	type Index = Nonce;
	type BlockNumber = BlockNumber;
	type Hash = Hash;
	type Hashing = BlakeTwo256;
	type AccountId = AccountId;
	type Lookup = AccountIdLookup<AccountId, ()>;
	type Header = generic::Header<BlockNumber, BlakeTwo256>;
	type Event = Event;
	type BlockHashCount = BlockHashCount;
	type DbWeight = RocksDbWeight;
	type Version = Version;
	type PalletInfo = PalletInfo;
	type AccountData = pallet_balances::AccountData<Balance>;
	type OnNewAccount = ();
	type OnKilledAccount = ();
	type SystemWeightInfo = weights::frame_system::WeightInfo<Runtime>;
	type SS58Prefix = SS58Prefix;
}

parameter_types! {
	pub MaximumSchedulerWeight: Weight = Perbill::from_percent(80) *
		BlockWeights::get().max_block;
	pub const MaxScheduledPerBlock: u32 = 50;
}

impl pallet_scheduler::Config for Runtime {
	type Event = Event;
	type Origin = Origin;
	type PalletsOrigin = OriginCaller;
	type Call = Call;
	type MaximumWeight = MaximumSchedulerWeight;
	type ScheduleOrigin = EnsureRoot<AccountId>;
	type MaxScheduledPerBlock = MaxScheduledPerBlock;
	type WeightInfo = weights::pallet_scheduler::WeightInfo<Runtime>;
}

parameter_types! {
	pub const EpochDuration: u64 = EPOCH_DURATION_IN_BLOCKS as u64;
	pub const ExpectedBlockTime: Moment = MILLISECS_PER_BLOCK;
	pub const ReportLongevity: u64 =
		BondingDuration::get() as u64 * SessionsPerEra::get() as u64 * EpochDuration::get();
}

impl pallet_babe::Config for Runtime {
	type EpochDuration = EpochDuration;
	type ExpectedBlockTime = ExpectedBlockTime;

	// session module is the trigger
	type EpochChangeTrigger = pallet_babe::ExternalTrigger;

	type KeyOwnerProofSystem = Historical;

	type KeyOwnerProof = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
		KeyTypeId,