Adds propose parachain pallet (#2243)

* Adds propose parachain pallet

* Update runtime/rococo/src/propose_parachain.rs

Co-authored-by: Shawn Tabrizi <[email protected]>

* Fix runtime benchmarks

* Get rid of staking

* Fix benchmarking feature..

* Remove accidentally added crate

* Bump Rococo spec_version

Co-authored-by: Shawn Tabrizi <[email protected]>

node/service/Cargo.toml

@@ -103,7 +103,14 @@ db = ["service/db"]
 full-node = [
 	"polkadot-node-core-av-store",
 ]
-runtime-benchmarks = ["polkadot-runtime/runtime-benchmarks", "kusama-runtime/runtime-benchmarks", "westend-runtime/runtime-benchmarks"]
+
+runtime-benchmarks = [
+	"polkadot-runtime/runtime-benchmarks",
+	"kusama-runtime/runtime-benchmarks",
+	"westend-runtime/runtime-benchmarks",
+	"rococo-runtime/runtime-benchmarks"
+]
+
 real-overseer = [
 	"polkadot-availability-bitfield-distribution",
 	"polkadot-availability-distribution",

node/service/src/chain_spec.rs

@@ -856,7 +856,6 @@ fn rococo_staging_testnet_config_genesis(wasm_binary: &[u8]) -> rococo_runtime::
 		pallet_authority_discovery: Some(rococo_runtime::AuthorityDiscoveryConfig {
 			keys: vec![],
 		}),
-		pallet_staking: Some(Default::default()),
 		pallet_sudo: Some(rococo_runtime::SudoConfig {
 			key: endowed_accounts[0].clone(),
 		}),
@@ -1343,7 +1342,6 @@ pub fn rococo_testnet_genesis(
 		pallet_authority_discovery: Some(rococo_runtime::AuthorityDiscoveryConfig {
 			keys: vec![],
 		}),
-		pallet_staking: Some(Default::default()),
 		pallet_sudo: Some(rococo_runtime::SudoConfig { key: root_key }),
 		parachains_configuration: Some(rococo_runtime::ParachainsConfigurationConfig {
 			config: polkadot_runtime_parachains::configuration::HostConfiguration {

runtime/common/src/lib.rs

@@ -52,7 +52,7 @@ pub type NegativeImbalance<T> = <pallet_balances::Module<T> as Currency<<T as fr
 
 /// The sequence of bytes a valid wasm module binary always starts with. Apart from that it's also a
 /// valid wasm module.
-const WASM_MAGIC: &[u8] = &[0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00];
+pub const WASM_MAGIC: &[u8] = &[0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00];
 
 /// We assume that an on-initialize consumes 2.5% of the weight on average, hence a single extrinsic
 /// will not be allowed to consume more than `AvailableBlockRatio - 2.5%`.

runtime/parachains/src/paras.rs

@@ -209,7 +209,7 @@ decl_storage! {
 
 		/// Upcoming paras (chains and threads). These are only updated on session change. Corresponds to an
 		/// entry in the upcoming-genesis map.
-		UpcomingParas: Vec<ParaId>;
+		UpcomingParas get(fn upcoming_paras): Vec<ParaId>;
 		/// Upcoming paras instantiation arguments.
 		UpcomingParasGenesis: map hasher(twox_64_concat) ParaId => Option<ParaGenesisArgs>;
 		/// Paras that are to be cleaned up at the end of the session.

runtime/rococo/Cargo.toml

@@ -10,6 +10,7 @@ parity-scale-codec = { version = "1.3.6", default-features = false, features = [
 serde = { version = "1.0.118", default-features = false }
 serde_derive = { version = "1.0.117", optional = true }
 smallvec = "1.6.1"
+hex-literal = "0.3.1"
 
 frame-support = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -113,3 +114,16 @@ std = [
 # runtime without clashing with the runtime api exported functions
 # in WASM.
 disable-runtime-api = []
+runtime-benchmarks = [
+	"runtime-common/runtime-benchmarks",
+	"frame-support/runtime-benchmarks",
+	"frame-system/runtime-benchmarks",
+	"sp-runtime/runtime-benchmarks",
+	"pallet-babe/runtime-benchmarks",
+	"pallet-balances/runtime-benchmarks",
+	"pallet-grandpa/runtime-benchmarks",
+	"pallet-im-online/runtime-benchmarks",
+	"pallet-indices/runtime-benchmarks",
+	"pallet-staking/runtime-benchmarks",
+	"pallet-timestamp/runtime-benchmarks",
+]

runtime/rococo/src/lib.rs

@@ -32,22 +32,18 @@ use primitives::v1::{
 	SessionInfo as SessionInfoData,
 };
 use runtime_common::{
-	SlowAdjustingFeeUpdate,
-	impls::ToAuthor,
-	BlockHashCount, BlockWeights, BlockLength, RocksDbWeight, OffchainSolutionWeightLimit,
+	SlowAdjustingFeeUpdate, impls::ToAuthor, BlockHashCount, BlockWeights, BlockLength, RocksDbWeight,
 };
 use runtime_parachains::{
 	self,
 	runtime_api_impl::v1 as runtime_api_impl,
 };
 use frame_support::{
-	parameter_types, construct_runtime, debug,
-	traits::{KeyOwnerProofSystem, Filter},
-	weights::Weight,
+	parameter_types, construct_runtime, debug, traits::{KeyOwnerProofSystem, Filter, EnsureOrigin}, weights::Weight,
 };
 use sp_runtime::{
 	create_runtime_str, generic, impl_opaque_keys,
-	ApplyExtrinsicResult, KeyTypeId, Perbill, curve::PiecewiseLinear,
+	ApplyExtrinsicResult, KeyTypeId, Perbill,
 	transaction_validity::{TransactionValidity, TransactionSource, TransactionPriority},
 	traits::{
 		BlakeTwo256, Block as BlockT, OpaqueKeys, IdentityLookup,
@@ -64,7 +60,7 @@ use pallet_grandpa::{AuthorityId as GrandpaId, fg_primitives};
 use sp_core::OpaqueMetadata;
 use sp_staking::SessionIndex;
 use pallet_session::historical as session_historical;
-use frame_system::EnsureRoot;
+use frame_system::{EnsureRoot, EnsureOneOf, EnsureSigned};
 use runtime_common::{paras_sudo_wrapper, paras_registrar};
 
 use runtime_parachains::origin as parachains_origin;
@@ -78,10 +74,8 @@ 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;
-use runtime_parachains::reward_points::RewardValidatorsWithEraPoints;
 
 pub use pallet_balances::Call as BalancesCall;
-pub use pallet_staking::StakerStatus;
 
 use polkadot_parachain::primitives::Id as ParaId;
 use xcm::v0::{MultiLocation, NetworkId};
@@ -91,10 +85,11 @@ use xcm_builder::{
 	CurrencyAdapter as XcmCurrencyAdapter, ChildParachainAsNative,
 	SignedAccountId32AsNative, ChildSystemParachainAsSuperuser, LocationInverter,
 };
+use constants::{time::*, currency::*, fee::*};
 
 /// Constant values used within the runtime.
 pub mod constants;
-use constants::{time::*, currency::*, fee::*};
+mod propose_parachain;
 
 // Make the WASM binary available.
 #[cfg(feature = "std")]
@@ -105,7 +100,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("rococo"),
 	impl_name: create_runtime_str!("parity-rococo-v1"),
 	authoring_version: 0,
-	spec_version: 14,
+	spec_version: 15,
 	impl_version: 0,
 	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
@@ -182,7 +177,6 @@ construct_runtime! {
 
 		// Consensus support.
 		Authorship: pallet_authorship::{Module, Call, Storage},
-		Staking: pallet_staking::{Module, Call, Storage, Config<T>, Event<T>, ValidateUnsigned},
 		Offences: pallet_offences::{Module, Call, Storage, Event},
 		Historical: session_historical::{Module},
 		Session: pallet_session::{Module, Call, Storage, Event, Config<T>},
@@ -208,6 +202,9 @@ construct_runtime! {
 
 		// Sudo
 		Sudo: pallet_sudo::{Module, Call, Storage, Event<T>, Config<T>},
+
+		// Propose parachain pallet.
+		ProposeParachain: propose_parachain::{Module, Call, Storage, Event},
 	}
 }
 
@@ -304,35 +301,15 @@ impl frame_system::offchain::SigningTypes for Runtime {
 	type Signature = Signature;
 }
 
-impl pallet_session::historical::Config for Runtime {
-	type FullIdentification = pallet_staking::Exposure<AccountId, Balance>;
-	type FullIdentificationOf = pallet_staking::ExposureOf<Runtime>;
+/// Special `FullIdentificationOf` implementation that is returning for every input `Some(Default::default())`.
+pub struct FullIdentificationOf;
+impl sp_runtime::traits::Convert<AccountId, Option<()>> for FullIdentificationOf {
+	fn convert(_: AccountId) -> Option<()> { Some(Default::default()) }
 }
 
-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: pallet_staking::EraIndex = 28;
-	// 27 eras in which slashes can be cancelled (~7 days).
-	pub const SlashDeferDuration: pallet_staking::EraIndex = 27;
-	pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
-	pub const MaxNominatorRewardedPerValidator: u32 = 64;
-	// quarter of the last session will be for election.
-	pub ElectionLookahead: BlockNumber = EpochDurationInBlocks::get() / 4;
-	pub const MaxIterations: u32 = 10;
-	pub MinSolutionScoreBump: Perbill = Perbill::from_rational_approximation(5u32, 10_000);
+impl pallet_session::historical::Config for Runtime {
+	type FullIdentification = ();
+	type FullIdentificationOf = FullIdentificationOf;
 }
 
 parameter_types! {
@@ -353,32 +330,6 @@ impl pallet_im_online::Config for Runtime {
 	type WeightInfo = ();
 }
 
-impl pallet_staking::Config for Runtime {
-	type Currency = Balances;
-	type UnixTime = Timestamp;
-	type CurrencyToVote = frame_support::traits::U128CurrencyToVote;
-	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 = EnsureRoot<AccountId>;
-	type SessionInterface = Self;
-	type RewardCurve = RewardCurve;
-	type MaxNominatorRewardedPerValidator = MaxNominatorRewardedPerValidator;
-	type NextNewSession = Session;
-	type ElectionLookahead = ElectionLookahead;
-	type Call = Call;
-	type UnsignedPriority = StakingUnsignedPriority;
-	type MaxIterations = MaxIterations;
-	type OffchainSolutionWeightLimit = OffchainSolutionWeightLimit;
-	type MinSolutionScoreBump = MinSolutionScoreBump;
-	type WeightInfo = ();
-}
-
 parameter_types! {
 	pub const ExistentialDeposit: Balance = 1 * CENTS;
 	pub const MaxLocks: u32 = 50;
@@ -414,7 +365,7 @@ parameter_types! {
 impl pallet_offences::Config for Runtime {
 	type Event = Event;
 	type IdentificationTuple = pallet_session::historical::IdentificationTuple<Self>;
-	type OnOffenceHandler = Staking;
+	type OnOffenceHandler = ();
 	type WeightSoftLimit = OffencesWeightSoftLimit;
 }
 
@@ -445,13 +396,19 @@ parameter_types! {
 	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
 }
 
+/// Special `ValidatorIdOf` implementation that is just returning the input as result.
+pub struct ValidatorIdOf;
+impl sp_runtime::traits::Convert<AccountId, Option<AccountId>> for ValidatorIdOf {
+	fn convert(a: AccountId) -> Option<AccountId> { Some(a) }
+}
+
 impl pallet_session::Config for Runtime {
 	type Event = Event;
 	type ValidatorId = AccountId;
-	type ValidatorIdOf = pallet_staking::StashOf<Self>;
+	type ValidatorIdOf = ValidatorIdOf;
 	type ShouldEndSession = Babe;
 	type NextSessionRotation = Babe;
-	type SessionManager = pallet_session::historical::NoteHistoricalRoot<Self, Staking>;
+	type SessionManager = pallet_session::historical::NoteHistoricalRoot<Self, ProposeParachain>;
 	type SessionHandler = <SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
 	type Keys = SessionKeys;
 	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
@@ -531,16 +488,23 @@ impl pallet_authorship::Config for Runtime {
 	type FindAuthor = pallet_session::FindAccountFromAuthorIndex<Self, Babe>;
 	type UncleGenerations = UncleGenerations;
 	type FilterUncle = ();
-	type EventHandler = (Staking, ImOnline);
+	type EventHandler = ImOnline;
 }
 
 impl parachains_origin::Config for Runtime {}
 
 impl parachains_configuration::Config for Runtime {}
 
+/// Special `RewardValidators` that does nothing ;)
+pub struct RewardValidators;
+impl runtime_parachains::inclusion::RewardValidators for RewardValidators {
+	fn reward_backing(_: impl IntoIterator<Item=ValidatorIndex>) {}
+	fn reward_bitfields(_: impl IntoIterator<Item=ValidatorIndex>) {}
+}
+
 impl parachains_inclusion::Config for Runtime {
 	type Event = Event;
-	type RewardValidators = RewardValidatorsWithEraPoints<Runtime>;
+	type RewardValidators = RewardValidators;
 }
 
 impl parachains_paras::Config for Runtime {
@@ -621,6 +585,41 @@ impl pallet_sudo::Config for Runtime {
 	type Call = Call;
 }
 
+/// Priviledged origin used by propose parachain.
+pub struct PriviledgedOrigin;
+
+impl EnsureOrigin<Origin> for PriviledgedOrigin {
+	type Success = ();
+
+	fn try_origin(o: Origin) -> Result<Self::Success, Origin> {
+		let allowed = [
+			hex_literal::hex!("b44c58e50328768ac06ed44b842bfa69d86ea10f60bc36156c9ffc5e00867220"),
+			hex_literal::hex!("762a6a38ba72b139cba285a39a6766e02046fb023f695f5ecf7f48b037c0dd6b")
+		];
+
+		let origin = o.clone();
+		match EnsureSigned::try_origin(o) {
+			Ok(who) if allowed.iter().any(|a| a == &who.as_ref()) => Ok(()),
+			_ => Err(origin),
+		}
+	}
+
+	#[cfg(feature = "runtime-benchmarks")]
+	fn successful_origin() -> Origin { Origin::root() }
+}
+
+parameter_types! {
+	pub const ProposeDeposit: Balance = 1000 * DOLLARS;
+	pub const MaxNameLength: u32 = 20;
+}
+
+impl propose_parachain::Config for Runtime {
+	type Event = Event;
+	type MaxNameLength = MaxNameLength;
+	type ProposeDeposit = ProposeDeposit;
+	type PriviledgedOrigin = EnsureOneOf<AccountId, EnsureRoot<AccountId>, PriviledgedOrigin>;
+}
+
 #[cfg(not(feature = "disable-runtime-api"))]
 sp_api::impl_runtime_apis! {
 	impl sp_api::Core<Block> for Runtime {