lib.rs

#![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"]

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

pub use frame_support::{
    construct_runtime, log, parameter_types,
    traits::{
        Currency, EstimateNextNewSession, Imbalance, KeyOwnerProofSystem, LockIdentifier, Nothing,
        OnUnbalanced, Randomness, ValidatorSet,
    },
    weights::{
        constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},
        IdentityFee, Weight,
    },
    StorageValue,
};
use frame_support::{
    sp_runtime::Perquintill,
    traits::{ConstU32, EqualPrivilegeOnly, SortedMembers, U128CurrencyToVote},
    weights::constants::WEIGHT_PER_MILLIS,
    PalletId,
};
use frame_system::{EnsureRoot, EnsureSignedBy};
pub use pallet_balances::Call as BalancesCall;
pub use pallet_timestamp::Call as TimestampCall;
use pallet_transaction_payment::{CurrencyAdapter, Multiplier, TargetedFeeAdjustment};
pub use primitives::Balance;
use primitives::{
    staking::MAX_NOMINATORS_REWARDED_PER_VALIDATOR, wrap_methods, ApiError as AlephApiError,
    AuthorityId as AlephId, SessionAuthorityData, Version as FinalityVersion, ADDRESSES_ENCODING,
    DEFAULT_BAN_REASON_LENGTH, DEFAULT_SESSIONS_PER_ERA, DEFAULT_SESSION_PERIOD,
    MILLISECS_PER_BLOCK, TOKEN,
};
use sp_api::impl_runtime_apis;
use sp_consensus_aura::{sr25519::AuthorityId as AuraId, SlotDuration};
use sp_core::{crypto::KeyTypeId, OpaqueMetadata};
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;
use sp_runtime::{
    create_runtime_str, generic, impl_opaque_keys,
    traits::{
        AccountIdLookup, BlakeTwo256, Block as BlockT, ConvertInto, IdentifyAccount, One,
        OpaqueKeys, Verify,
    },
    transaction_validity::{TransactionSource, TransactionValidity},
    ApplyExtrinsicResult, FixedU128, MultiSignature, RuntimeAppPublic,
};
pub use sp_runtime::{FixedPointNumber, Perbill, Permill};
use sp_staking::EraIndex;
use sp_std::prelude::*;
#[cfg(feature = "std")]
use sp_version::NativeVersion;
use sp_version::RuntimeVersion;

/// An index to a block.
pub type BlockNumber = u32;

/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
pub type Signature = MultiSignature;

/// Some way of identifying an account on the chain. We intentionally make it equivalent
/// to the public key of our transaction signing scheme.
pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;

/// The type for looking up accounts. We don't expect more than 4 billion of them, but you
/// never know...
pub type AccountIndex = u32;

/// Index of a transaction in the chain.
pub type Index = u32;

/// A hash of some data used by the chain.
pub type Hash = sp_core::H256;

/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
/// the specifics of the runtime. They can then be made to be agnostic over specific formats
/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
/// to even the core data structures.
pub mod opaque {
    pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;

    use super::*;

    /// Opaque block header type.
    pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
    /// Opaque block type.
    pub type Block = generic::Block<Header, UncheckedExtrinsic>;
    /// Opaque block identifier type.
    pub type BlockId = generic::BlockId<Block>;

    impl_opaque_keys! {
        pub struct SessionKeys {
            pub aura: Aura,
            pub aleph: Aleph,
        }
    }
}

pub const VERSION: RuntimeVersion = RuntimeVersion {
    spec_name: create_runtime_str!("aleph-node"),
    impl_name: create_runtime_str!("aleph-node"),
    authoring_version: 1,
    spec_version: 46,
    impl_version: 1,
    apis: RUNTIME_API_VERSIONS,
    transaction_version: 14,
    state_version: 0,
};

/// The version information used to identify this runtime when compiled natively.
#[cfg(feature = "std")]
pub fn native_version() -> NativeVersion {
    NativeVersion {
        runtime_version: VERSION,
        can_author_with: Default::default(),
    }
}

pub const BLOCKS_PER_HOUR: u32 = 60 * 60 * 1000 / (MILLISECS_PER_BLOCK as u32);

pub const MILLI_AZERO: Balance = TOKEN / 1000;
pub const MICRO_AZERO: Balance = MILLI_AZERO / 1000;
pub const NANO_AZERO: Balance = MICRO_AZERO / 1000;
pub const PICO_AZERO: Balance = NANO_AZERO / 1000;

// 75% block weight is dedicated to normal extrinsics
pub const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
// The whole process for a single block should take 1s, of which 400ms is for creation,
// 200ms for propagation and 400ms for validation. Hence the block weight should be within 400ms.
pub const MAX_BLOCK_WEIGHT: Weight = 400 * WEIGHT_PER_MILLIS;
// We agreed to 5MB as the block size limit.
pub const MAX_BLOCK_SIZE: u32 = 5 * 1024 * 1024;

// The storage deposit is roughly 1 TOKEN per 1kB
pub const DEPOSIT_PER_BYTE: Balance = MILLI_AZERO;

parameter_types! {
    pub const Version: RuntimeVersion = VERSION;
    pub const BlockHashCount: BlockNumber = 2400;
    pub BlockWeights: frame_system::limits::BlockWeights = frame_system::limits::BlockWeights
        ::with_sensible_defaults(MAX_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO);
    pub BlockLength: frame_system::limits::BlockLength = frame_system::limits::BlockLength
        ::max_with_normal_ratio(MAX_BLOCK_SIZE, NORMAL_DISPATCH_RATIO);
    pub const SS58Prefix: u8 = ADDRESSES_ENCODING;
}

// Configure FRAME pallets to include in runtime.

impl frame_system::Config for Runtime {
    /// The basic call filter to use in dispatchable.
    type BaseCallFilter = frame_support::traits::Everything;
    /// Block & extrinsics weights: base values and limits.
    type BlockWeights = BlockWeights;
    /// The maximum length of a block (in bytes).
    type BlockLength = BlockLength;
    /// The identifier used to distinguish between accounts.
    type AccountId = AccountId;
    /// The aggregated dispatch type that is available for extrinsics.
    type Call = Call;
    /// The lookup mechanism to get account ID from whatever is passed in dispatchers.
    type Lookup = AccountIdLookup<AccountId, ()>;
    /// The index type for storing how many extrinsics an account has signed.
    type Index = Index;
    /// The index type for blocks.
    type BlockNumber = BlockNumber;
    /// The type for hashing blocks and tries.
    type Hash = Hash;
    /// The hashing algorithm used.
    type Hashing = BlakeTwo256;
    /// The header type.
    type Header = generic::Header<BlockNumber, BlakeTwo256>;
    /// The ubiquitous event type.
    type Event = Event;
    /// The ubiquitous origin type.
    type Origin = Origin;
    /// Maximum number of block number to block hash mappings to keep (oldest pruned first).
    type BlockHashCount = BlockHashCount;
    /// The weight of database operations that the runtime can invoke.
    type DbWeight = RocksDbWeight;
    /// Version of the runtime.
    type Version = Version;
    /// Converts a module to the index of the module in `construct_runtime!`.
    ///
    /// This type is being generated by `construct_runtime!`.
    type PalletInfo = PalletInfo;
    /// What to do if a new account is created.
    type OnNewAccount = ();
    /// What to do if an account is fully reaped from the system.
    type OnKilledAccount = ();
    /// The data to be stored in an account.
    type AccountData = pallet_balances::AccountData<Balance>;
    /// Weight information for the extrinsics of this pallet.
    type SystemWeightInfo = ();
    /// This is used as an identifier of the chain. 42 is the generic substrate prefix.
    type SS58Prefix = SS58Prefix;
    type OnSetCode = ();
    type MaxConsumers = frame_support::traits::ConstU32<16>;
}

parameter_types! {
    // https://github.com/paritytech/polkadot/blob/9ce5f7ef5abb1a4291454e8c9911b304d80679f9/runtime/polkadot/src/lib.rs#L784
    pub const MaxAuthorities: u32 = 100_000;
}

impl pallet_aura::Config for Runtime {
    type MaxAuthorities = MaxAuthorities;
    type AuthorityId = AuraId;
    type DisabledValidators = ();
}

parameter_types! {
    pub const UncleGenerations: BlockNumber = 0;
}

impl pallet_authorship::Config for Runtime {
    type FindAuthor = pallet_session::FindAccountFromAuthorIndex<Self, Aura>;
    type UncleGenerations = UncleGenerations;
    type FilterUncle = ();
    type EventHandler = (Elections,);
}

parameter_types! {
    pub const ExistentialDeposit: u128 = 500 * PICO_AZERO;
    pub const MaxLocks: u32 = 50;
}

impl pallet_balances::Config for Runtime {
    type MaxLocks = MaxLocks;
    type MaxReserves = ();
    type ReserveIdentifier = [u8; 8];
    /// The type for recording an account's balance.
    type Balance = Balance;
    /// The ubiquitous event type.
    type Event = Event;
    type DustRemoval = ();
    type ExistentialDeposit = ExistentialDeposit;
    type AccountStore = System;
    type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
}

type NegativeImbalance = <Balances as Currency<AccountId>>::NegativeImbalance;

pub struct EverythingToTheTreasury;

impl OnUnbalanced<NegativeImbalance> for EverythingToTheTreasury {
    fn on_unbalanceds<B>(mut fees_then_tips: impl Iterator<Item = NegativeImbalance>) {
        if let Some(fees) = fees_then_tips.next() {
            Treasury::on_unbalanced(fees);
            if let Some(tips) = fees_then_tips.next() {
                Treasury::on_unbalanced(tips);
            }
        }
    }
}

parameter_types! {
    // This value increases the priority of `Operational` transactions by adding
    // a "virtual tip" that's equal to the `OperationalFeeMultiplier * final_fee`.
    // follows polkadot : https://github.com/paritytech/polkadot/blob/9ce5f7ef5abb1a4291454e8c9911b304d80679f9/runtime/polkadot/src/lib.rs#L369
    pub const OperationalFeeMultiplier: u8 = 5;
    // We expect that on average 25% of the normal capacity will be occupied with normal txs.
    pub const TargetSaturationLevel: Perquintill = Perquintill::from_percent(25);
    // During 20 blocks the fee may not change more than by 100%. This, together with the
    // `TargetSaturationLevel` value, results in variability ~0.067. For the corresponding
    // formulas please refer to Substrate code at `frame/transaction-payment/src/lib.rs`.
    pub FeeVariability: Multiplier = Multiplier::saturating_from_rational(67, 1000);
    // Fee should never be lower than the computational cost.
    pub MinimumMultiplier: Multiplier = Multiplier::one();
}

impl pallet_transaction_payment::Config for Runtime {
    type Event = Event;
    type OnChargeTransaction = CurrencyAdapter<Balances, EverythingToTheTreasury>;
    type LengthToFee = IdentityFee<Balance>;
    type WeightToFee = IdentityFee<Balance>;
    type FeeMultiplierUpdate =
        TargetedFeeAdjustment<Self, TargetSaturationLevel, FeeVariability, MinimumMultiplier>;
    type OperationalFeeMultiplier = OperationalFeeMultiplier;
}

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 = frame_system::EnsureRoot<AccountId>;
    type MaxScheduledPerBlock = MaxScheduledPerBlock;
    type WeightInfo = pallet_scheduler::weights::SubstrateWeight<Runtime>;
    type OriginPrivilegeCmp = EqualPrivilegeOnly;
    type PreimageProvider = ();
    type NoPreimagePostponement = ();
}

impl pallet_sudo::Config for Runtime {
    type Event = Event;
    type Call = Call;
}

impl pallet_aleph::Config for Runtime {
    type AuthorityId = AlephId;
    type Event = Event;
    type SessionInfoProvider = Session;
    type SessionManager = Elections;
}

impl_opaque_keys! {
    pub struct SessionKeys {
        pub aura: Aura,
        pub aleph: Aleph,
    }
}

parameter_types! {
    pub const SessionPeriod: u32 = DEFAULT_SESSION_PERIOD;
    pub const MaximumBanReasonLength: u32 = DEFAULT_BAN_REASON_LENGTH;
}

impl pallet_elections::Config for Runtime {
    type EraInfoProvider = Staking;
    type Event = Event;
    type DataProvider = Staking;
    type SessionInfoProvider = Session;
    type SessionPeriod = SessionPeriod;
    type SessionManager = pallet_session::historical::NoteHistoricalRoot<Runtime, Staking>;
    type ValidatorRewardsHandler = Staking;
    type MaximumBanReasonLength = MaximumBanReasonLength;
}

impl pallet_randomness_collective_flip::Config for Runtime {}

parameter_types! {
    pub const Offset: u32 = 0;
}

impl pallet_session::Config for Runtime {
    type Event = Event;
    type ValidatorId = <Self as frame_system::Config>::AccountId;
    type ValidatorIdOf = pallet_staking::StashOf<Self>;
    type ShouldEndSession = pallet_session::PeriodicSessions<SessionPeriod, Offset>;
    type NextSessionRotation = pallet_session::PeriodicSessions<SessionPeriod, Offset>;
    type SessionManager = Aleph;
    type SessionHandler = <SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
    type Keys = SessionKeys;
    type WeightInfo = pallet_session::weights::SubstrateWeight<Runtime>;
}

impl pallet_session::historical::Config for Runtime {
    type FullIdentification = pallet_staking::Exposure<AccountId, Balance>;
    type FullIdentificationOf = pallet_staking::ExposureOf<Runtime>;
}

parameter_types! {
    pub const PostUnbondPoolsWindow: u32 = 4;
    pub const NominationPoolsPalletId: PalletId = PalletId(*b"py/nopls");
    pub const MaxPointsToBalance: u8 = 10;
}

use sp_runtime::traits::Convert;
pub struct BalanceToU256;
impl Convert<Balance, sp_core::U256> for BalanceToU256 {
    fn convert(balance: Balance) -> sp_core::U256 {
        sp_core::U256::from(balance)
    }
}
pub struct U256ToBalance;
impl Convert<sp_core::U256, Balance> for U256ToBalance {
    fn convert(n: sp_core::U256) -> Balance {
        n.try_into().unwrap_or(Balance::max_value())
    }
}

impl pallet_nomination_pools::Config for Runtime {
    type WeightInfo = ();
    type Event = Event;
    type Currency = Balances;
    type CurrencyBalance = Balance;
    type RewardCounter = FixedU128;
    type BalanceToU256 = BalanceToU256;
    type U256ToBalance = U256ToBalance;
    type StakingInterface = pallet_staking::Pallet<Self>;
    type PostUnbondingPoolsWindow = PostUnbondPoolsWindow;
    type MaxMetadataLen = ConstU32<256>;
    type MaxUnbonding = ConstU32<8>;
    type PalletId = NominationPoolsPalletId;
    type MaxPointsToBalance = MaxPointsToBalance;
}

parameter_types! {
    pub const BondingDuration: EraIndex = 14;
    pub const SlashDeferDuration: EraIndex = 13;
    // this is coupled with weights for payout_stakers() call
    // see custom implementation of WeightInfo below
    pub const MaxNominatorRewardedPerValidator: u32 = MAX_NOMINATORS_REWARDED_PER_VALIDATOR;
    pub const OffendingValidatorsThreshold: Perbill = Perbill::from_percent(33);
    pub const SessionsPerEra: EraIndex = DEFAULT_SESSIONS_PER_ERA;
}

pub struct UniformEraPayout;

impl pallet_staking::EraPayout<Balance> for UniformEraPayout {
    fn era_payout(_: Balance, _: Balance, era_duration_millis: u64) -> (Balance, Balance) {
        primitives::staking::era_payout(era_duration_millis)
    }
}

type SubstrateStakingWeights = pallet_staking::weights::SubstrateWeight<Runtime>;

pub struct PayoutStakersDecreasedWeightInfo;
impl pallet_staking::WeightInfo for PayoutStakersDecreasedWeightInfo {
    // To make possible to change nominators per validator we need to decrease weight for payout_stakers
    fn payout_stakers_alive_staked(n: u32) -> Weight {
        SubstrateStakingWeights::payout_stakers_alive_staked(n) / 2
    }
    wrap_methods!(
        (bond(), SubstrateStakingWeights, Weight),
        (bond_extra(), SubstrateStakingWeights, Weight),
        (unbond(), SubstrateStakingWeights, Weight),
        (
            withdraw_unbonded_update(s: u32),
            SubstrateStakingWeights,
            Weight
        ),
        (
            withdraw_unbonded_kill(s: u32),
            SubstrateStakingWeights,
            Weight
        ),
        (validate(), SubstrateStakingWeights, Weight),
        (kick(k: u32), SubstrateStakingWeights, Weight),
        (nominate(n: u32), SubstrateStakingWeights, Weight),
        (chill(), SubstrateStakingWeights, Weight),
        (set_payee(), SubstrateStakingWeights, Weight),
        (set_controller(), SubstrateStakingWeights, Weight),
        (set_validator_count(), SubstrateStakingWeights, Weight),
        (force_no_eras(), SubstrateStakingWeights, Weight),
        (force_new_era(), SubstrateStakingWeights, Weight),
        (force_new_era_always(), SubstrateStakingWeights, Weight),
        (set_invulnerables(v: u32), SubstrateStakingWeights, Weight),
        (force_unstake(s: u32), SubstrateStakingWeights, Weight),
        (
            cancel_deferred_slash(s: u32),
            SubstrateStakingWeights,
            Weight
        ),
        (
            payout_stakers_dead_controller(n: u32),
            SubstrateStakingWeights,
            Weight
        ),
        (rebond(l: u32), SubstrateStakingWeights, Weight),
        (set_history_depth(e: u32), SubstrateStakingWeights, Weight),
        (reap_stash(s: u32), SubstrateStakingWeights, Weight),
        (new_era(v: u32, n: u32), SubstrateStakingWeights, Weight),
        (
            get_npos_voters(v: u32, n: u32, s: u32),
            SubstrateStakingWeights,
            Weight
        ),
        (get_npos_targets(v: u32), SubstrateStakingWeights, Weight),
        (chill_other(), SubstrateStakingWeights, Weight),
        (
            set_staking_configs_all_set(),
            SubstrateStakingWeights,
            Weight
        ),
        (
            set_staking_configs_all_remove(),
            SubstrateStakingWeights,
            Weight
        ),
        (
            force_apply_min_commission(),
            SubstrateStakingWeights,
            Weight
        )
    );
}

pub struct StakingBenchmarkingConfig;
impl pallet_staking::BenchmarkingConfig for StakingBenchmarkingConfig {
    type MaxValidators = ConstU32<1000>;
    type MaxNominators = ConstU32<1000>;
}

impl pallet_staking::Config for Runtime {
    // Do not change this!!! It guarantees that we have DPoS instead of NPoS.
    type Currency = Balances;
    type UnixTime = Timestamp;
    type CurrencyToVote = U128CurrencyToVote;
    type ElectionProvider = Elections;
    type GenesisElectionProvider = Elections;
    type MaxNominations = ConstU32<1>;
    type RewardRemainder = Treasury;
    type Event = Event;
    type Slash = Treasury;
    type Reward = ();
    type SessionsPerEra = SessionsPerEra;
    type BondingDuration = BondingDuration;
    type SlashDeferDuration = SlashDeferDuration;
    type SlashCancelOrigin = EnsureRoot<AccountId>;
    type SessionInterface = Self;
    type EraPayout = UniformEraPayout;
    type NextNewSession = Session;
    type MaxNominatorRewardedPerValidator = MaxNominatorRewardedPerValidator;
    type OffendingValidatorsThreshold = OffendingValidatorsThreshold;
    type VoterList = pallet_staking::UseNominatorsAndValidatorsMap<Runtime>;
    type MaxUnlockingChunks = ConstU32<16>;
    type BenchmarkingConfig = StakingBenchmarkingConfig;
    type WeightInfo = PayoutStakersDecreasedWeightInfo;
    type CurrencyBalance = Balance;
    type OnStakerSlash = NominationPools;
}

parameter_types! {
    pub const MinimumPeriod: u64 = MILLISECS_PER_BLOCK / 2;
}

impl pallet_timestamp::Config for Runtime {
    /// A timestamp: milliseconds since the unix epoch.
    type Moment = u64;
    type OnTimestampSet = Aura;
    type MinimumPeriod = MinimumPeriod;
    type WeightInfo = ();
}

impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime
where
    Call: From<C>,
{
    type Extrinsic = UncheckedExtrinsic;
    type OverarchingCall = Call;
}

parameter_types! {
    pub const MinVestedTransfer: Balance = MICRO_AZERO;
}

impl pallet_vesting::Config for Runtime {
    type Event = Event;
    type Currency = Balances;
    type BlockNumberToBalance = ConvertInto;
    type MinVestedTransfer = MinVestedTransfer;
    type WeightInfo = pallet_vesting::weights::SubstrateWeight<Runtime>;
    // Maximum number of vesting schedules an account may have at a given moment
    // follows polkadot https://github.com/paritytech/polkadot/blob/9ce5f7ef5abb1a4291454e8c9911b304d80679f9/runtime/polkadot/src/lib.rs#L980
    const MAX_VESTING_SCHEDULES: u32 = 28;
}

parameter_types! {
    // One storage item; key size is 32+32; value is size 4+4+16+32 bytes = 56 bytes.
    pub const DepositBase: Balance = 120 * DEPOSIT_PER_BYTE;
    // Additional storage item size of 32 bytes.
    pub const DepositFactor: Balance = 32 * DEPOSIT_PER_BYTE;
    pub const MaxSignatories: u16 = 100;
}

impl pallet_multisig::Config for Runtime {
    type Event = Event;
    type Call = Call;
    type Currency = Balances;
    type DepositBase = DepositBase;
    type DepositFactor = DepositFactor;
    type MaxSignatories = MaxSignatories;
    type WeightInfo = pallet_multisig::weights::SubstrateWeight<Runtime>;
}

#[cfg(not(feature = "enable_treasury_proposals"))]
// This value effectively disables treasury.
pub const TREASURY_PROPOSAL_BOND: Balance = 100_000_000_000 * TOKEN;

#[cfg(feature = "enable_treasury_proposals")]
pub const TREASURY_PROPOSAL_BOND: Balance = 100 * TOKEN;

parameter_types! {
    // We do not burn any money within treasury.
    pub const Burn: Permill = Permill::from_percent(0);
    // The fraction of the proposal that the proposer should deposit.
    // We agreed on non-progressive deposit.
    pub const ProposalBond: Permill = Permill::from_percent(0);
    // The minimal deposit for proposal.
    pub const ProposalBondMinimum: Balance = TREASURY_PROPOSAL_BOND;
    // The upper bound of the deposit for the proposal.
    pub const ProposalBondMaximum: Balance = TREASURY_PROPOSAL_BOND;
    // Maximum number of approvals that can wait in the spending queue.
    pub const MaxApprovals: u32 = 20;
    // Every 4 hours we fund accepted proposals.
    pub const SpendPeriod: BlockNumber = 4 * BLOCKS_PER_HOUR;
    pub const TreasuryPalletId: PalletId = PalletId(*b"a0/trsry");
}

pub struct TreasuryGovernance;
impl SortedMembers<AccountId> for TreasuryGovernance {
    fn sorted_members() -> Vec<AccountId> {
        pallet_sudo::Pallet::<Runtime>::key().into_iter().collect()
    }
}

impl pallet_treasury::Config for Runtime {
    type ApproveOrigin = EnsureSignedBy<TreasuryGovernance, AccountId>;
    type Burn = Burn;
    type BurnDestination = ();
    type Currency = Balances;
    type Event = Event;
    type MaxApprovals = MaxApprovals;
    type OnSlash = ();
    type PalletId = TreasuryPalletId;
    type ProposalBond = ProposalBond;
    type ProposalBondMinimum = ProposalBondMinimum;
    type ProposalBondMaximum = ProposalBondMaximum;
    type RejectOrigin = EnsureSignedBy<TreasuryGovernance, AccountId>;
    type SpendFunds = ();
    type SpendOrigin = frame_support::traits::NeverEnsureOrigin<u128>;
    type SpendPeriod = SpendPeriod;
    type WeightInfo = pallet_treasury::weights::SubstrateWeight<Runtime>;
}

impl pallet_utility::Config for Runtime {
    type Event = Event;
    type Call = Call;
    type WeightInfo = pallet_utility::weights::SubstrateWeight<Runtime>;
    type PalletsOrigin = OriginCaller;
}

parameter_types! {
    // bytes count taken from:
    // https://github.com/paritytech/polkadot/blob/016dc7297101710db0483ab6ef199e244dff711d/runtime/kusama/src/lib.rs#L995
    pub const BasicDeposit: Balance = 258 * DEPOSIT_PER_BYTE;
    pub const FieldDeposit: Balance = 66 * DEPOSIT_PER_BYTE;
    pub const SubAccountDeposit: Balance = 53 * DEPOSIT_PER_BYTE;
    pub const MaxSubAccounts: u32 = 100;
    pub const MaxAdditionalFields: u32 = 100;
    pub const MaxRegistrars: u32 = 20;
}

impl pallet_identity::Config for Runtime {
    type Event = Event;
    type Currency = Balances;
    type BasicDeposit = BasicDeposit;
    type FieldDeposit = FieldDeposit;
    type SubAccountDeposit = SubAccountDeposit;
    type MaxSubAccounts = MaxSubAccounts;
    type MaxAdditionalFields = MaxAdditionalFields;
    type MaxRegistrars = MaxRegistrars;
    type Slashed = Treasury;
    type ForceOrigin = EnsureRoot<AccountId>;
    type RegistrarOrigin = EnsureRoot<AccountId>;
    type WeightInfo = pallet_identity::weights::SubstrateWeight<Self>;
}

// Create the runtime by composing the FRAME pallets that were previously configured.
construct_runtime!(
    pub enum Runtime where
        Block = Block,
        NodeBlock = opaque::Block,
        UncheckedExtrinsic = UncheckedExtrinsic
    {
        System: frame_system,
        RandomnessCollectiveFlip: pallet_randomness_collective_flip,
        Scheduler: pallet_scheduler,
        Aura: pallet_aura,
        Timestamp: pallet_timestamp,
        Balances: pallet_balances,
        TransactionPayment: pallet_transaction_payment,
        Authorship: pallet_authorship,
        Staking: pallet_staking,
        History: pallet_session::historical,
        Session: pallet_session,
        Aleph: pallet_aleph,
        Elections: pallet_elections,
        Treasury: pallet_treasury,
        Vesting: pallet_vesting,
        Utility: pallet_utility,
        Multisig: pallet_multisig,
        Sudo: pallet_sudo,
        NominationPools: pallet_nomination_pools,
        Identity: pallet_identity,
    }
);

/// The address format for describing accounts.
pub type Address = sp_runtime::MultiAddress<AccountId, ()>;
/// Block header type as expected by this runtime.
pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
/// Block type as expected by this runtime.
pub type Block = generic::Block<Header, UncheckedExtrinsic>;
/// A Block signed with a Justification
pub type SignedBlock = generic::SignedBlock<Block>;
/// BlockId type as expected by this runtime.
pub type BlockId = generic::BlockId<Block>;
/// The SignedExtension to the basic transaction logic.
pub type SignedExtra = (
    frame_system::CheckSpecVersion<Runtime>,
    frame_system::CheckTxVersion<Runtime>,
    frame_system::CheckGenesis<Runtime>,
    frame_system::CheckEra<Runtime>,
    frame_system::CheckNonce<Runtime>,
    frame_system::CheckWeight<Runtime>,
    pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
);
/// Unchecked extrinsic type as expected by this runtime.
pub type UncheckedExtrinsic = generic::UncheckedExtrinsic<Address, Call, Signature, SignedExtra>;
/// Extrinsic type that has already been checked.
pub type CheckedExtrinsic = generic::CheckedExtrinsic<AccountId, Call, SignedExtra>;
/// Executive: handles dispatch to the various modules.
pub type Executive = frame_executive::Executive<
    Runtime,
    Block,
    frame_system::ChainContext<Runtime>,
    Runtime,
    AllPalletsWithSystem,
>;

impl_runtime_apis! {
    impl sp_api::Core<Block> for Runtime {
        fn version() -> RuntimeVersion {
            VERSION
        }

        fn execute_block(block: Block) {
            Executive::execute_block(block);
        }

        fn initialize_block(header: &<Block as BlockT>::Header) {
            Executive::initialize_block(header)
        }
    }

    impl sp_api::Metadata<Block> for Runtime {
        fn metadata() -> OpaqueMetadata {
            OpaqueMetadata::new(Runtime::metadata().into())
        }
    }

    impl sp_block_builder::BlockBuilder<Block> for Runtime {
        fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
            Executive::apply_extrinsic(extrinsic)
        }

        fn finalize_block() -> <Block as BlockT>::Header {
            Executive::finalize_block()
        }

        fn inherent_extrinsics(data: sp_inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
            data.create_extrinsics()
        }

        fn check_inherents(
            block: Block,
            data: sp_inherents::InherentData,
        ) -> sp_inherents::CheckInherentsResult {
            data.check_extrinsics(&block)
        }
    }

    impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
        fn validate_transaction(
            source: TransactionSource,
            tx: <Block as BlockT>::Extrinsic,
            block_hash: <Block as BlockT>::Hash,
        ) -> TransactionValidity {
            Executive::validate_transaction(source, tx, block_hash)
        }
    }

    impl sp_consensus_aura::AuraApi<Block, AuraId> for Runtime {
        fn slot_duration() -> SlotDuration {
            SlotDuration::from_millis(Aura::slot_duration())
        }

        fn authorities() -> Vec<AuraId> {
            Aura::authorities().to_vec()
        }
    }

    impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
        fn offchain_worker(header: &<Block as BlockT>::Header) {
            Executive::offchain_worker(header)
        }
    }

    impl sp_session::SessionKeys<Block> for Runtime {
        fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
            opaque::SessionKeys::generate(seed)
        }

        fn decode_session_keys(
            encoded: Vec<u8>,
        ) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
            opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
        }
    }

    impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Index> for Runtime {
        fn account_nonce(account: AccountId) -> Index {
            System::account_nonce(account)
        }
    }

    impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance> for Runtime {
        fn query_info(
            uxt: <Block as BlockT>::Extrinsic,
            len: u32,
        ) -> pallet_transaction_payment_rpc_runtime_api::RuntimeDispatchInfo<Balance> {
            TransactionPayment::query_info(uxt, len)
        }
        fn query_fee_details(
            uxt: <Block as BlockT>::Extrinsic,
            len: u32,
        ) -> pallet_transaction_payment::FeeDetails<Balance> {
            TransactionPayment::query_fee_details(uxt, len)
        }
    }

    impl primitives::AlephSessionApi<Block> for Runtime {
        fn millisecs_per_block() -> u64 {
            MILLISECS_PER_BLOCK
        }

        fn session_period() -> u32 {
            SessionPeriod::get()
        }

        fn authorities() -> Vec<AlephId> {
            Aleph::authorities()
        }

        fn next_session_authorities() -> Result<Vec<AlephId>, AlephApiError> {
            Session::queued_keys()
                .iter()
                .map(|(_, key)| key.get(AlephId::ID).ok_or(AlephApiError::DecodeKey))
                .collect::<Result<Vec<AlephId>, AlephApiError>>()
        }

        fn authority_data() -> SessionAuthorityData {
            SessionAuthorityData::new(Aleph::authorities(), Aleph::emergency_finalizer())
        }

        fn next_session_authority_data() -> Result<SessionAuthorityData, AlephApiError> {
            Ok(SessionAuthorityData::new(Session::queued_keys()
                .iter()
                .map(|(_, key)| key.get(AlephId::ID).ok_or(AlephApiError::DecodeKey))
                .collect::<Result<Vec<AlephId>, AlephApiError>>()?,
                Aleph::queued_emergency_finalizer(),
            ))
        }

        fn finality_version() -> FinalityVersion {
            Aleph::finality_version()
        }

        fn next_session_finality_version() -> FinalityVersion {
            Aleph::next_session_finality_version()
        }
    }

    impl pallet_nomination_pools_runtime_api::NominationPoolsApi<Block, AccountId, Balance> for Runtime {
        fn pending_rewards(member_account: AccountId) -> Balance {
            NominationPools::pending_rewards(member_account)
        }
    }


    #[cfg(feature = "try-runtime")]
    impl frame_try_runtime::TryRuntime<Block> for Runtime {
        fn on_runtime_upgrade() -> (frame_support::weights::Weight, frame_support::weights::Weight) {
            log::info!(target: "aleph-runtime", "try-runtime::on_runtime_upgrade");
            let weight = Executive::try_runtime_upgrade().unwrap();
            (weight, BlockWeights::get().max_block)
        }

        fn execute_block_no_check(block: Block) -> frame_support::weights::Weight {
            Executive::execute_block_no_check(block)
        }
    }
}

#[cfg(test)]
mod tests {
    use crate::VERSION;

    #[test]
    fn state_version_must_be_zero() {
        assert_eq!(0, VERSION.state_version);
    }
}