Add a testnet similar to sc_network_test. (#852)

* Copy over files * Most network tests work * Fix copyrights * Strip out unneeded pallets * Update test-runtime and remove unused network test things * Upgrade test runtime * Strip more things out of the test runtime * Bump kusama impl version
2026-06-14 00:31:07 +00:00 · 2020-03-10 15:36:21 +01:00
parent 5ef0597e79
commit 1736c2d576
12 changed files with 2344 additions and 1 deletions
@@ -0,0 +1,72 @@
+// Copyright 2019-2020 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/>.
+
+/// Money matters.
+pub mod currency {
+	use primitives::Balance;
+
+	pub const DOTS: Balance = 1_000_000_000_000;
+	pub const DOLLARS: Balance = DOTS;
+	pub const CENTS: Balance = DOLLARS / 100;
+	pub const MILLICENTS: Balance = CENTS / 1_000;
+}
+
+/// Time and blocks.
+pub mod time {
+	use primitives::{Moment, BlockNumber};
+	// Testnet
+	pub const MILLISECS_PER_BLOCK: Moment = 1000;
+	pub const SLOT_DURATION: Moment = MILLISECS_PER_BLOCK;
+	// Testnet
+	pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 10 * MINUTES;
+
+	// These time units are defined in number of blocks.
+	pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
+	pub const HOURS: BlockNumber = MINUTES * 60;
+	pub const DAYS: BlockNumber = HOURS * 24;
+
+	// 1 in 4 blocks (on average, not counting collisions) will be primary babe blocks.
+	pub const PRIMARY_PROBABILITY: (u64, u64) = (1, 4);
+}
+
+/// Fee-related.
+pub mod fee {
+	pub use sp_runtime::Perbill;
+	use primitives::Balance;
+	use frame_support::weights::Weight;
+	use sp_runtime::traits::Convert;
+
+	/// The block saturation level. Fees will be updates based on this value.
+	pub const TARGET_BLOCK_FULLNESS: Perbill = Perbill::from_percent(25);
+
+	/// Handles converting a weight scalar to a fee value, based on the scale and granularity of the
+	/// node's balance type.
+	///
+	/// This should typically create a mapping between the following ranges:
+	///   - [0, system::MaximumBlockWeight]
+	///   - [Balance::min, Balance::max]
+	///
+	/// Yet, it can be used for any other sort of change to weight-fee. Some examples being:
+	///   - Setting it to `0` will essentially disable the weight fee.
+	///   - Setting it to `1` will cause the literal `#[weight = x]` values to be charged.
+	pub struct WeightToFee;
+	impl Convert<Weight, Balance> for WeightToFee {
+		fn convert(x: Weight) -> Balance {
+			// in Kusama a weight of 10_000 (smallest non-zero weight) is mapped to 1/10 CENT:
+			Balance::from(x).saturating_mul(super::currency::CENTS / (10 * 10_000))
+		}
+	}
+}
@@ -0,0 +1,580 @@
+// 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 rstd::prelude::*;
+use codec::{Encode, Decode};
+use primitives::{
+	AccountId, AccountIndex, Balance, BlockNumber, Hash as HashT, Nonce, Signature, Moment,
+	parachain::{self, ActiveParas, AbridgedCandidateReceipt}, ValidityError,
+};
+use runtime_common::{attestations, claims, parachains, registrar, slots,
+	impls::{CurrencyToVoteHandler, TargetedFeeAdjustment},
+	BlockHashCount, MaximumBlockWeight, AvailableBlockRatio,
+	MaximumBlockLength,
+};
+
+use sp_runtime::{
+	create_runtime_str, generic, impl_opaque_keys,
+	ApplyExtrinsicResult, Perbill, RuntimeDebug,
+	transaction_validity::{TransactionValidity, InvalidTransaction, TransactionValidityError},
+	curve::PiecewiseLinear,
+	traits::{BlakeTwo256, Block as BlockT, StaticLookup, SignedExtension, OpaqueKeys, ConvertInto},
+};
+use version::RuntimeVersion;
+use grandpa::{AuthorityId as GrandpaId, fg_primitives};
+#[cfg(any(feature = "std", test))]
+use version::NativeVersion;
+use sp_core::OpaqueMetadata;
+use sp_staking::SessionIndex;
+use frame_support::{
+	parameter_types, construct_runtime, traits::Randomness,
+	weights::DispatchInfo,
+};
+use pallet_transaction_payment_rpc_runtime_api::RuntimeDispatchInfo;
+
+#[cfg(feature = "std")]
+pub use staking::StakerStatus;
+#[cfg(any(feature = "std", test))]
+pub use sp_runtime::BuildStorage;
+pub use timestamp::Call as TimestampCall;
+pub use balances::Call as BalancesCall;
+pub use attestations::{Call as AttestationsCall, MORE_ATTESTATIONS_IDENTIFIER};
+pub use parachains::Call as ParachainsCall;
+
+/// Constant values used within the runtime.
+pub mod constants;
+use constants::{time::*, currency::*, fee::*};
+
+// Make the WASM binary available.
+#[cfg(feature = "std")]
+include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
+
+/// Runtime version (Kusama).
+pub const VERSION: RuntimeVersion = RuntimeVersion {
+	spec_name: create_runtime_str!("polkadot-test-runtime"),
+	impl_name: create_runtime_str!("parity-polkadot-test-runtime"),
+	authoring_version: 2,
+	spec_version: 1048,
+	impl_version: 0,
+	apis: RUNTIME_API_VERSIONS,
+};
+
+/// Native version.
+#[cfg(any(feature = "std", test))]
+pub fn native_version() -> NativeVersion {
+	NativeVersion {
+		runtime_version: VERSION,
+		can_author_with: Default::default(),
+	}
+}
+
+/// Avoid processing transactions from slots and parachain registrar.
+#[derive(Default, Encode, Decode, Clone, Eq, PartialEq, RuntimeDebug)]
+pub struct RestrictFunctionality;
+impl SignedExtension for RestrictFunctionality {
+	const IDENTIFIER: &'static str = "RestrictFunctionality";
+	type AccountId = AccountId;
+	type Call = Call;
+	type AdditionalSigned = ();
+	type Pre = ();
+	type DispatchInfo = DispatchInfo;
+
+	fn additional_signed(&self) -> rstd::result::Result<(), TransactionValidityError> { Ok(()) }
+
+	fn validate(&self, _: &Self::AccountId, call: &Self::Call, _: DispatchInfo, _: usize)
+		-> TransactionValidity
+	{
+		match call {
+			Call::Slots(_) | Call::Registrar(_)
+				=> Err(InvalidTransaction::Custom(ValidityError::NoPermission.into()).into()),
+			_ => Ok(Default::default()),
+		}
+	}
+}
+
+parameter_types! {
+	pub const Version: RuntimeVersion = VERSION;
+}
+
+impl system::Trait for Runtime {
+	type Origin = Origin;
+	type Call = Call;
+	type Index = Nonce;
+	type BlockNumber = BlockNumber;
+	type Hash = HashT;
+	type Hashing = BlakeTwo256;
+	type AccountId = AccountId;
+	type Lookup = Indices;
+	type Header = generic::Header<BlockNumber, BlakeTwo256>;
+	type Event = Event;
+	type BlockHashCount = BlockHashCount;
+	type MaximumBlockWeight = MaximumBlockWeight;
+	type MaximumBlockLength = MaximumBlockLength;
+	type AvailableBlockRatio = AvailableBlockRatio;
+	type Version = Version;
+	type ModuleToIndex = ModuleToIndex;
+	type AccountData = balances::AccountData<Balance>;
+	type OnNewAccount = ();
+	type OnKilledAccount = ();
+}
+
+parameter_types! {
+	pub const EpochDuration: u64 = EPOCH_DURATION_IN_BLOCKS as u64;
+	pub const ExpectedBlockTime: Moment = MILLISECS_PER_BLOCK;
+}
+
+impl babe::Trait for Runtime {
+	type EpochDuration = EpochDuration;
+	type ExpectedBlockTime = ExpectedBlockTime;
+
+	// session module is the trigger
+	type EpochChangeTrigger = babe::ExternalTrigger;
+}
+
+parameter_types! {
+	pub const IndexDeposit: Balance = 1 * DOLLARS;
+}
+
+impl indices::Trait for Runtime {
+	type AccountIndex = AccountIndex;
+	type Currency = Balances;
+	type Deposit = IndexDeposit;
+	type Event = Event;
+}
+
+parameter_types! {
+	pub const ExistentialDeposit: Balance = 1 * CENTS;
+}
+
+impl balances::Trait for Runtime {
+	type Balance = Balance;
+	type DustRemoval = ();
+	type Event = Event;
+	type ExistentialDeposit = ExistentialDeposit;
+	type AccountStore = System;
+}
+
+parameter_types! {
+	pub const TransactionBaseFee: Balance = 1 * CENTS;
+	pub const TransactionByteFee: Balance = 10 * MILLICENTS;
+	// for a sane configuration, this should always be less than `AvailableBlockRatio`.
+	pub const TargetBlockFullness: Perbill = Perbill::from_percent(25);
+}
+
+impl transaction_payment::Trait for Runtime {
+	type Currency = Balances;
+	type OnTransactionPayment = ();
+	type TransactionBaseFee = TransactionBaseFee;
+	type TransactionByteFee = TransactionByteFee;
+	type WeightToFee = WeightToFee;
+	type FeeMultiplierUpdate = TargetedFeeAdjustment<TargetBlockFullness, Self>;
+}
+
+parameter_types! {
+	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
+}
+impl timestamp::Trait for Runtime {
+	type Moment = u64;
+	type OnTimestampSet = Babe;
+	type MinimumPeriod = MinimumPeriod;
+}
+
+parameter_types! {
+	pub const UncleGenerations: u32 = 0;
+}
+
+// TODO: substrate#2986 implement this properly
+impl authorship::Trait for Runtime {
+	type FindAuthor = session::FindAccountFromAuthorIndex<Self, Babe>;
+	type UncleGenerations = UncleGenerations;
+	type FilterUncle = ();
+	type EventHandler = Staking;
+}
+
+parameter_types! {
+	pub const Period: BlockNumber = 10 * MINUTES;
+	pub const Offset: BlockNumber = 0;
+}
+
+impl_opaque_keys! {
+	pub struct SessionKeys {
+		pub grandpa: Grandpa,
+		pub babe: Babe,
+		pub parachain_validator: Parachains,
+	}
+}
+
+parameter_types! {
+	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
+}
+
+impl session::Trait for Runtime {
+	type Event = Event;
+	type ValidatorId = AccountId;
+	type ValidatorIdOf = staking::StashOf<Self>;
+	type ShouldEndSession = Babe;
+	type SessionManager = Staking;
+	type SessionHandler = <SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
+	type Keys = SessionKeys;
+	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
+}
+
+impl session::historical::Trait for Runtime {
+	type FullIdentification = staking::Exposure<AccountId, Balance>;
+	type FullIdentificationOf = staking::ExposureOf<Runtime>;
+}
+
+pallet_staking_reward_curve::build! {
+	const REWARD_CURVE: PiecewiseLinear<'static> = curve!(
+		min_inflation: 0_025_000,
+		max_inflation: 0_100_000,
+		ideal_stake: 0_500_000,
+		falloff: 0_050_000,
+		max_piece_count: 40,
+		test_precision: 0_005_000,
+	);
+}
+
+parameter_types! {
+	// Six sessions in an era (6 hours).
+	pub const SessionsPerEra: SessionIndex = 6;
+	// 28 eras for unbonding (7 days).
+	pub const BondingDuration: staking::EraIndex = 28;
+	// 28 eras in which slashes can be cancelled (7 days).
+	pub const SlashDeferDuration: staking::EraIndex = 28;
+	pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
+	pub const MaxNominatorRewardedPerValidator: u32 = 64;
+}
+
+impl staking::Trait for Runtime {
+	type Currency = Balances;
+	type Time = Timestamp;
+	type CurrencyToVote = CurrencyToVoteHandler<Self>;
+	type RewardRemainder = ();
+	type Event = Event;
+	type Slash = ();
+	type Reward = ();
+	type SessionsPerEra = SessionsPerEra;
+	type BondingDuration = BondingDuration;
+	type SlashDeferDuration = SlashDeferDuration;
+	// A majority of the council can cancel the slash.
+	type SlashCancelOrigin = system::EnsureNever<()>;
+	type SessionInterface = Self;
+	type RewardCurve = RewardCurve;
+	type MaxNominatorRewardedPerValidator = MaxNominatorRewardedPerValidator;
+}
+
+impl grandpa::Trait for Runtime {
+	type Event = Event;
+}
+
+parameter_types! {
+	pub const AttestationPeriod: BlockNumber = 50;
+}
+
+impl attestations::Trait for Runtime {
+	type AttestationPeriod = AttestationPeriod;
+	type ValidatorIdentities = parachains::ValidatorIdentities<Runtime>;
+	type RewardAttestation = Staking;
+}
+
+parameter_types! {
+	pub const MaxCodeSize: u32 = 10 * 1024 * 1024; // 10 MB
+	pub const MaxHeadDataSize: u32 = 20 * 1024; // 20 KB
+}
+
+impl parachains::Trait for Runtime {
+	type Origin = Origin;
+	type Call = Call;
+	type ParachainCurrency = Balances;
+	type Randomness = RandomnessCollectiveFlip;
+	type ActiveParachains = Registrar;
+	type Registrar = Registrar;
+	type MaxCodeSize = MaxCodeSize;
+	type MaxHeadDataSize = MaxHeadDataSize;
+}
+
+parameter_types! {
+	pub const ParathreadDeposit: Balance = 5 * DOLLARS;
+	pub const QueueSize: usize = 2;
+	pub const MaxRetries: u32 = 3;
+}
+
+impl registrar::Trait for Runtime {
+	type Event = Event;
+	type Origin = Origin;
+	type Currency = Balances;
+	type ParathreadDeposit = ParathreadDeposit;
+	type SwapAux = Slots;
+	type QueueSize = QueueSize;
+	type MaxRetries = MaxRetries;
+}
+
+parameter_types! {
+	pub const LeasePeriod: BlockNumber = 100_000;
+	pub const EndingPeriod: BlockNumber = 1000;
+}
+
+impl slots::Trait for Runtime {
+	type Event = Event;
+	type Currency = Balances;
+	type Parachains = Registrar;
+	type LeasePeriod = LeasePeriod;
+	type EndingPeriod = EndingPeriod;
+	type Randomness = RandomnessCollectiveFlip;
+}
+
+parameter_types! {
+	pub const Prefix: &'static [u8] = b"Pay KSMs to the Kusama account:";
+}
+
+impl claims::Trait for Runtime {
+	type Event = Event;
+	type VestingSchedule = Vesting;
+	type Prefix = Prefix;
+}
+
+parameter_types! {
+	pub const MinVestedTransfer: Balance = 100 * DOLLARS;
+}
+
+impl vesting::Trait for Runtime {
+	type Event = Event;
+	type Currency = Balances;
+	type BlockNumberToBalance = ConvertInto;
+	type MinVestedTransfer = MinVestedTransfer;
+}
+
+construct_runtime! {
+	pub enum Runtime where
+		Block = Block,
+		NodeBlock = primitives::Block,
+		UncheckedExtrinsic = UncheckedExtrinsic
+	{
+		// Basic stuff; balances is uncallable initially.
+		System: system::{Module, Call, Storage, Config, Event<T>},
+		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Storage},
+
+		// Must be before session.
+		Babe: babe::{Module, Call, Storage, Config, Inherent(Timestamp)},
+
+		Timestamp: timestamp::{Module, Call, Storage, Inherent},
+		Indices: indices::{Module, Call, Storage, Config<T>, Event<T>},
+		Balances: balances::{Module, Call, Storage, Config<T>, Event<T>},
+		TransactionPayment: transaction_payment::{Module, Storage},
+
+		// Consensus support.
+		Authorship: authorship::{Module, Call, Storage},
+		Staking: staking::{Module, Call, Storage, Config<T>, Event<T>},
+		Session: session::{Module, Call, Storage, Event, Config<T>},
+		Grandpa: grandpa::{Module, Call, Storage, Config, Event},
+
+		// Claims. Usable initially.
+		Claims: claims::{Module, Call, Storage, Event<T>, Config<T>, ValidateUnsigned},
+
+		// Parachains stuff; slots are disabled (no auctions initially). The rest are safe as they
+		// have no public dispatchables.
+		Parachains: parachains::{Module, Call, Storage, Config, Inherent, Origin},
+		Attestations: attestations::{Module, Call, Storage},
+		Slots: slots::{Module, Call, Storage, Event<T>},
+		Registrar: registrar::{Module, Call, Storage, Event, Config<T>},
+
+		// Vesting. Usable initially, but removed once all vesting is finished.
+		Vesting: vesting::{Module, Call, Storage, Event<T>, Config<T>},
+	}
+}
+
+/// The address format for describing accounts.
+pub type Address = <Indices as StaticLookup>::Source;
+/// 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 = (
+	RestrictFunctionality,
+	system::CheckVersion<Runtime>,
+	system::CheckGenesis<Runtime>,
+	system::CheckEra<Runtime>,
+	system::CheckNonce<Runtime>,
+	system::CheckWeight<Runtime>,
+	transaction_payment::ChargeTransactionPayment::<Runtime>,
+	registrar::LimitParathreadCommits<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, Nonce, Call>;
+/// Executive: handles dispatch to the various modules.
+pub type Executive = executive::Executive<Runtime, Block, system::ChainContext<Runtime>, Runtime, AllModules>;
+
+pub type Hash = <Block as BlockT>::Hash;
+pub type Extrinsic = <Block as BlockT>::Extrinsic;
+
+sp_api::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 {
+			Runtime::metadata().into()
+		}
+	}
+
+	impl block_builder_api::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: inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
+			data.create_extrinsics()
+		}
+
+		fn check_inherents(
+			block: Block,
+			data: inherents::InherentData,
+		) -> inherents::CheckInherentsResult {
+			data.check_extrinsics(&block)
+		}
+
+		fn random_seed() -> <Block as BlockT>::Hash {
+			RandomnessCollectiveFlip::random_seed()
+		}
+	}
+
+	impl tx_pool_api::runtime_api::TaggedTransactionQueue<Block> for Runtime {
+		fn validate_transaction(tx: <Block as BlockT>::Extrinsic) -> TransactionValidity {
+			Executive::validate_transaction(tx)
+		}
+	}
+
+	impl parachain::ParachainHost<Block> for Runtime {
+		fn validators() -> Vec<parachain::ValidatorId> {
+			Parachains::authorities()
+		}
+		fn duty_roster() -> parachain::DutyRoster {
+			Parachains::calculate_duty_roster().0
+		}
+		fn active_parachains() -> Vec<(parachain::Id, Option<(parachain::CollatorId, parachain::Retriable)>)> {
+			Registrar::active_paras()
+		}
+		fn global_validation_schedule() -> parachain::GlobalValidationSchedule {
+			Parachains::global_validation_schedule()
+		}
+		fn local_validation_data(id: parachain::Id) -> Option<parachain::LocalValidationData> {
+			Parachains::local_validation_data(&id)
+		}
+		fn parachain_code(id: parachain::Id) -> Option<Vec<u8>> {
+			Parachains::parachain_code(&id)
+		}
+		fn get_heads(extrinsics: Vec<<Block as BlockT>::Extrinsic>)
+			-> Option<Vec<AbridgedCandidateReceipt>>
+		{
+			extrinsics
+				.into_iter()
+				.find_map(|ex| match UncheckedExtrinsic::decode(&mut ex.encode().as_slice()) {
+					Ok(ex) => match ex.function {
+						Call::Parachains(ParachainsCall::set_heads(heads)) => {
+							Some(heads.into_iter().map(|c| c.candidate).collect())
+						}
+						_ => None,
+					}
+					Err(_) => None,
+				})
+		}
+	}
+
+	impl fg_primitives::GrandpaApi<Block> for Runtime {
+		fn grandpa_authorities() -> Vec<(GrandpaId, u64)> {
+			Grandpa::grandpa_authorities()
+		}
+	}
+
+	impl babe_primitives::BabeApi<Block> for Runtime {
+		fn configuration() -> babe_primitives::BabeConfiguration {
+			// The choice of `c` parameter (where `1 - c` represents the
+			// probability of a slot being empty), is done in accordance to the
+			// slot duration and expected target block time, for safely
+			// resisting network delays of maximum two seconds.
+			// <https://research.web3.foundation/en/latest/polkadot/BABE/Babe/#6-practical-results>
+			babe_primitives::BabeConfiguration {
+				slot_duration: Babe::slot_duration(),
+				epoch_length: EpochDuration::get(),
+				c: PRIMARY_PROBABILITY,
+				genesis_authorities: Babe::authorities(),
+				randomness: Babe::randomness(),
+				secondary_slots: true,
+			}
+		}
+
+		fn current_epoch_start() -> babe_primitives::SlotNumber {
+			Babe::current_epoch_start()
+		}
+	}
+
+	impl sp_session::SessionKeys<Block> for Runtime {
+		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
+			SessionKeys::generate(seed)
+		}
+
+		fn decode_session_keys(
+			encoded: Vec<u8>,
+		) -> Option<Vec<(Vec<u8>, sp_core::crypto::KeyTypeId)>> {
+			SessionKeys::decode_into_raw_public_keys(&encoded)
+		}
+	}
+
+	impl system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
+		fn account_nonce(account: AccountId) -> Nonce {
+			System::account_nonce(account)
+		}
+	}
+
+	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<
+		Block,
+		Balance,
+		UncheckedExtrinsic,
+	> for Runtime {
+		fn query_info(uxt: UncheckedExtrinsic, len: u32) -> RuntimeDispatchInfo<Balance> {
+			TransactionPayment::query_info(uxt, len)
+		}
+	}
+}