Parachains-runtime (#1505)

* Initial commit

* v0 to v1 primitives and remove attestations

* Review fixes

* implement candidate_events

* remove dead code

Cargo.lock

@@ -5993,6 +5993,53 @@ dependencies = [
  "librocksdb-sys",
 ]
 
+[[package]]
+name = "rococo-runtime"
+version = "0.8.19"
+dependencies = [
+ "frame-executive",
+ "frame-support",
+ "frame-system",
+ "frame-system-rpc-runtime-api",
+ "pallet-authority-discovery",
+ "pallet-authorship",
+ "pallet-babe",
+ "pallet-balances",
+ "pallet-grandpa",
+ "pallet-im-online",
+ "pallet-indices",
+ "pallet-offences",
+ "pallet-session",
+ "pallet-staking",
+ "pallet-staking-reward-curve",
+ "pallet-timestamp",
+ "pallet-transaction-payment",
+ "pallet-transaction-payment-rpc-runtime-api",
+ "parity-scale-codec",
+ "polkadot-parachain",
+ "polkadot-primitives",
+ "polkadot-runtime-common",
+ "polkadot-runtime-parachains",
+ "serde",
+ "serde_derive",
+ "smallvec 1.4.1",
+ "sp-api",
+ "sp-authority-discovery",
+ "sp-block-builder",
+ "sp-consensus-babe",
+ "sp-core",
+ "sp-inherents",
+ "sp-io",
+ "sp-offchain",
+ "sp-runtime",
+ "sp-session",
+ "sp-staking",
+ "sp-std",
+ "sp-transaction-pool",
+ "sp-version",
+ "substrate-wasm-builder-runner 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rpassword"
 version = "4.0.5"

Cargo.toml

@@ -35,6 +35,7 @@ members = [
 	"runtime/parachains",
 	"runtime/polkadot",
 	"runtime/kusama",
+	"runtime/rococo",
 	"runtime/westend",
 	"runtime/test-runtime",
 	"runtime/test-runtime/client",

primitives/src/v0.rs

@@ -815,7 +815,7 @@ impl<T: Encode> EncodeAs<T> for T {
 ///
 /// Note that the internal fields are not public; they are all accessable by immutable getters.
 /// This reduces the chance that they are accidentally mutated, invalidating the signature.
-#[derive(Debug, Clone, PartialEq, Eq, Encode, Decode)]
+#[derive(Clone, PartialEq, Eq, Encode, Decode, RuntimeDebug)]
 pub struct Signed<Payload, RealPayload = Payload> {
 	/// The payload is part of the signed data. The rest is the signing context,
 	/// which is known both at signing and at validation.

primitives/src/v1.rs

@@ -304,8 +304,7 @@ impl PoV {
 }
 
 /// A bitfield concerning availability of backed candidates.
-#[derive(PartialEq, Eq, Clone, Encode, Decode)]
-#[cfg_attr(feature = "std", derive(Debug))]
+#[derive(PartialEq, Eq, Clone, Encode, Decode, RuntimeDebug)]
 pub struct AvailabilityBitfield(pub BitVec<bitvec::order::Lsb0, u8>);
 
 impl From<BitVec<bitvec::order::Lsb0, u8>> for AvailabilityBitfield {

runtime/parachains/src/lib.rs

@@ -20,13 +20,16 @@
 //! particular the `Initializer` module, as it is responsible for initializing the state
 //! of the other modules.
 
-mod configuration;
-mod inclusion;
-mod inclusion_inherent;
-mod initializer;
-mod paras;
-mod scheduler;
-mod validity;
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+pub mod configuration;
+pub mod inclusion;
+pub mod inclusion_inherent;
+pub mod initializer;
+pub mod paras;
+pub mod scheduler;
+pub mod validity;
 
 pub mod runtime_api_impl;
 

runtime/parachains/src/runtime_api_impl/v1.rs

@@ -17,6 +17,7 @@
 //! Runtimes implementing the v1 runtime API are recommended to forward directly to these
 //! functions.
 
+use sp_std::prelude::*;
 use primitives::v1::{
 	ValidatorId, ValidatorIndex, GroupRotationInfo, CoreState, GlobalValidationData,
 	Id as ParaId, OccupiedCoreAssumption, LocalValidationData, SessionIndex, ValidationCode,
@@ -239,9 +240,11 @@ pub fn candidate_pending_availability<T: initializer::Trait>(para_id: ParaId)
 /// Implementation for the `candidate_events` function of the runtime API.
 // NOTE: this runs without block initialization, as it accesses events.
 // this means it can run in a different session than other runtime APIs at the same block.
-pub fn candidate_events<T: initializer::Trait>(
-	extract_event: impl Fn(<T as system::Trait>::Event) -> Option<inclusion::Event<T>>,
-) -> Vec<CandidateEvent<T::Hash>> {
+pub fn candidate_events<T, F>(extract_event: F) -> Vec<CandidateEvent<T::Hash>>
+where
+	T: initializer::Trait,
+	F: Fn(<T as system::Trait>::Event) -> Option<inclusion::Event<T>>,
+{
 	use inclusion::Event as RawEvent;
 
 	<system::Module<T>>::events().into_iter()

runtime/rococo/Cargo.toml

+[package]
+name = "rococo-runtime"
+version = "0.8.19"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
+build = "build.rs"
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "1.3.4", default-features = false, features = ["derive"] }
+serde = { version = "1.0.102", default-features = false }
+serde_derive = { version = "1.0.102", optional = true }
+smallvec = "1.4.1"
+
+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 }
+sp-io = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-std = { package = "sp-std", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-session = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-staking = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-core = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+version = { package = "sp-version", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+tx-pool-api = { package = "sp-transaction-pool", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+block-builder-api = { package = "sp-block-builder", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+inherents = { package = "sp-inherents", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+offchain-primitives = { package = "sp-offchain", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+authority-discovery = { package = "pallet-authority-discovery", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+authorship = { package = "pallet-authorship", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+babe = { package = "pallet-babe", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+babe-primitives = { package = "sp-consensus-babe", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+balances = { package = "pallet-balances", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+session = { package = "pallet-session", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+im-online = { package = "pallet-im-online", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+indices = { package = "pallet-indices", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+transaction-payment = { package = "pallet-transaction-payment", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+transaction-payment-rpc-runtime-api = { package = "pallet-transaction-payment-rpc-runtime-api", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+staking = { package = "pallet-staking", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+pallet-staking-reward-curve = { package = "pallet-staking-reward-curve", git = "https://github.com/paritytech/substrate", branch = "master" }
+executive = { package = "frame-executive", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+grandpa = { package = "pallet-grandpa", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+timestamp = { package = "pallet-timestamp", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+offences = { package = "pallet-offences", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+authority-discovery-primitives = { package = "sp-authority-discovery", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+system = { package = "frame-system", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+system_rpc_runtime_api = { package = "frame-system-rpc-runtime-api", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+runtime-common = { package = "polkadot-runtime-common", path = "../common", default-features = false }
+primitives = { package = "polkadot-primitives", path = "../../primitives", default-features = false }
+polkadot-parachain = { path = "../../parachain", default-features = false }
+runtime-parachains = { package = "polkadot-runtime-parachains", path = "../parachains", default-features = false }
+
+[build-dependencies]
+wasm-builder-runner = { package = "substrate-wasm-builder-runner", version = "1.0.6" }
+
+[features]
+default = ["std"]
+no_std = []
+std = [
+	"authority-discovery-primitives/std",
+	"authority-discovery/std",
+	"authorship/std",
+	"babe/std",
+	"babe-primitives/std",
+	"balances/std",
+	"codec/std",
+	"executive/std",
+	"grandpa/std",
+	"indices/std",
+	"im-online/std",
+	"inherents/std",
+	"frame-support/std",
+	"polkadot-parachain/std",
+	"primitives/std",
+	"runtime-common/std",
+	"runtime-parachains/std",
+	"session/std",
+	"sp-api/std",
+	"sp-core/std",
+	"sp-io/std",
+	"sp-runtime/std",
+	"sp-session/std",
+	"sp-staking/std",
+	"sp-std/std",
+	"staking/std",
+	"system/std",
+	"system_rpc_runtime_api/std",
+	"offchain-primitives/std",
+	"offences/std",
+	"timestamp/std",
+	"transaction-payment/std",
+	"transaction-payment-rpc-runtime-api/std",
+	"block-builder-api/std",
+	"tx-pool-api/std",
+	"version/std",
+	"serde_derive",
+	"serde/std",
+]
+# When enabled, the runtime api will not be build.
+#
+# This is required by Cumulus to access certain types of the
+# runtime without clashing with the runtime api exported functions
+# in WASM.
+disable-runtime-api = []

runtime/rococo/build.rs

+// Copyright 2020 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Substrate 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.
+
+// Substrate 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 Substrate.  If not, see <http://www.gnu.org/licenses/>.
+
+use wasm_builder_runner::WasmBuilder;
+
+fn main() {
+	WasmBuilder::new()
+		.with_current_project()
+		.with_wasm_builder_from_crates("2.0.0")
+		.import_memory()
+		.export_heap_base()
+		.build()
+}

runtime/rococo/src/constants.rs

+// Copyright 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::v0::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;
+
+	pub const fn deposit(items: u32, bytes: u32) -> Balance {
+		items as Balance * 1 * DOLLARS + (bytes as Balance) * 5 * MILLICENTS
+	}
+}
+
+/// Time and blocks.
+pub mod time {
+	use primitives::v0::{Moment, BlockNumber};
+	pub const MILLISECS_PER_BLOCK: Moment = 6000;
+	pub const SLOT_DURATION: Moment = MILLISECS_PER_BLOCK;
+	pub const EPOCH_DURATION_IN_BLOCKS: BlockNumber = 1 * HOURS;
+
+	// 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::v0::Balance;
+	use runtime_common::ExtrinsicBaseWeight;
+	use frame_support::weights::{
+		WeightToFeePolynomial, WeightToFeeCoefficient, WeightToFeeCoefficients,
+	};
+	use smallvec::smallvec;
+
+	/// 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 WeightToFeePolynomial for WeightToFee {
+		type Balance = Balance;
+		fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {
+			// in Westend, extrinsic base weight (smallest non-zero weight) is mapped to 1/10 CENT:
+			let p = super::currency::CENTS;
+			let q = 10 * Balance::from(ExtrinsicBaseWeight::get());
+			smallvec![WeightToFeeCoefficient {
+				degree: 1,
+				negative: false,
+				coeff_frac: Perbill::from_rational_approximation(p % q, q),
+				coeff_integer: p / q,
+			}]
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use frame_support::weights::WeightToFeePolynomial;
+	use runtime_common::{MaximumBlockWeight, ExtrinsicBaseWeight};
+	use super::fee::WeightToFee;
+	use super::currency::{CENTS, DOLLARS, MILLICENTS};
+
+	#[test]
+	// This function tests that the fee for `MaximumBlockWeight` of weight is correct
+	fn full_block_fee_is_correct() {
+		// A full block should cost 16 DOLLARS
+		println!("Base: {}", ExtrinsicBaseWeight::get());
+		let x = WeightToFee::calc(&MaximumBlockWeight::get());
+		let y = 16 * DOLLARS;
+		assert!(x.max(y) - x.min(y) < MILLICENTS);
+	}
+
+	#[test]
+	// This function tests that the fee for `ExtrinsicBaseWeight` of weight is correct
+	fn extrinsic_base_fee_is_correct() {
+		// `ExtrinsicBaseWeight` should cost 1/10 of a CENT
+		println!("Base: {}", ExtrinsicBaseWeight::get());
+		let x = WeightToFee::calc(&ExtrinsicBaseWeight::get());
+		let y = CENTS / 10;
+		assert!(x.max(y) - x.min(y) < MILLICENTS);
+	}
+}