Begin to add a test parachain

cumulus/Cargo.toml

@@ -4,4 +4,9 @@ members = [
 	"runtime",
 	"test/runtime",
 	"test/client",
+	"test/parachain/runtime",
+	"test/parachain/",
 ]
+
+[profile.release]
+panic = 'unwind'

cumulus/collator/src/lib.rs

@@ -1,5 +1,5 @@
 // Copyright 2019 Parity Technologies (UK) Ltd.
-// This file is part of Substrate.
+// This file is part of Cumulus.
 
 // Substrate is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -96,7 +96,7 @@ impl<Block, PF> ParachainContext for Collator<Block, PF> where
 	>;
 
 	fn produce_candidate<I: IntoIterator<Item=(ParaId, Message)>>(
-		&self,
+		&mut self,
 		_relay_chain_parent: Hash,
 		status: ParachainStatus,
 		_: I,

cumulus/consensus/Cargo.toml

@@ -10,6 +10,7 @@ edition = "2018"
 substrate-client = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
 substrate-consensus-common = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
 substrate-primitives = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+substrate-inherents = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
 sr-primitives = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
 
 # polkadot deps

cumulus/consensus/src/import_queue.rs

@@ -0,0 +1,125 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Cumulus.
+
+// Cumulus 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.
+
+// Cumulus 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 Cumulus.  If not, see <http://www.gnu.org/licenses/>.
+
+use std::sync::Arc;
+
+use substrate_primitives::{H256, Blake2Hasher};
+
+use sr_primitives::{
+	traits::{Block as BlockT, ProvideRuntimeApi, Header as HeaderT}, Justification,
+	generic::BlockId,
+};
+
+use substrate_client::{
+	block_builder::api::BlockBuilder as BlockBuilderApi, backend::Backend, CallExecutor, Client,
+	error::Result as ClientResult,
+};
+
+use substrate_consensus_common::{
+	import_queue::{Verifier as VerifierT, BasicQueue, CacheKeyId}, BlockImportParams,
+	ForkChoiceStrategy, BlockOrigin, error::Error as ConsensusError, BlockImport,
+};
+
+use substrate_inherents::InherentDataProviders;
+
+/// A verifier that just checks the inherents.
+struct Verifier<B, E, Block: BlockT, RA> {
+	client: Arc<Client<B, E, Block, RA>>,
+	inherent_data_providers: InherentDataProviders,
+}
+
+impl<B, E, Block, RA> VerifierT<Block> for Verifier<B, E, Block, RA> where
+	Block: BlockT<Hash=H256>,
+	B: Backend<Block, Blake2Hasher> + 'static,
+	E: CallExecutor<Block, Blake2Hasher> + 'static + Clone + Send + Sync,
+	RA: Send + Sync,
+	Client<B, E, Block, RA>: ProvideRuntimeApi + Send + Sync,
+	<Client<B, E, Block, RA> as ProvideRuntimeApi>::Api: BlockBuilderApi<Block>
+{
+	fn verify(
+		&mut self,
+		origin: BlockOrigin,
+		header: Block::Header,
+		justification: Option<Justification>,
+		mut body: Option<Vec<Block::Extrinsic>>,
+	) -> Result<(BlockImportParams<Block>, Option<Vec<(CacheKeyId, Vec<u8>)>>), String> {
+		if let Some(inner_body) = body.take() {
+			let inherent_data = self.inherent_data_providers
+				.create_inherent_data()
+				.map_err(String::from)?;
+
+			let block = Block::new(header.clone(), inner_body);
+
+			let inherent_res = self.client.runtime_api().check_inherents(
+				&BlockId::Hash(*header.parent_hash()),
+				block.clone(),
+				inherent_data,
+			).map_err(|e| format!("{:?}", e))?;
+
+			if !inherent_res.ok() {
+				inherent_res
+					.into_errors()
+					.try_for_each(|(i, e)| {
+						Err(self.inherent_data_providers.error_to_string(&i, &e))
+					})?;
+			}
+
+			let (_, inner_body) = block.deconstruct();
+			body = Some(inner_body);
+		}
+
+
+		let block_import_params = BlockImportParams {
+			origin,
+			header,
+			post_digests: Vec::new(),
+			body,
+			finalized: false,
+			justification,
+			auxiliary: Vec::new(),
+			fork_choice: ForkChoiceStrategy::LongestChain,
+		};
+
+		Ok((block_import_params, None))
+	}
+}
+
+/// Start an import queue for a Cumulus collator that does not uses any special authoring logic.
+pub fn import_queue<B, E, Block: BlockT<Hash=H256>, I, RA>(
+	client: Arc<Client<B, E, Block, RA>>,
+	block_import: I,
+	inherent_data_providers: InherentDataProviders,
+) -> ClientResult<BasicQueue<Block>>
+	where
+		B: Backend<Block, Blake2Hasher> + 'static,
+		I: BlockImport<Block,Error=ConsensusError> + Send + Sync + 'static,
+		E: CallExecutor<Block, Blake2Hasher> + Clone + Send + Sync + 'static,
+		RA: Send + Sync + 'static,
+		Client<B, E, Block, RA>: ProvideRuntimeApi + Send + Sync + 'static,
+		<Client<B, E, Block, RA> as ProvideRuntimeApi>::Api: BlockBuilderApi<Block>,
+{
+	let verifier = Verifier {
+		client,
+		inherent_data_providers
+	};
+
+	Ok(BasicQueue::new(
+		verifier,
+		Box::new(block_import),
+		None,
+		None,
+	))
+}

cumulus/consensus/src/lib.rs

@@ -35,6 +35,8 @@ use log::warn;
 
 use std::{sync::Arc, marker::PhantomData};
 
+pub mod import_queue;
+
 /// Helper for the local client.
 pub trait LocalClient {
 	/// The block type of the local client.

cumulus/test/parachain/Cargo.toml

@@ -0,0 +1,45 @@
+[package]
+name = 'cumulus-test-parachain-collator'
+version = '0.1.0'
+authors = ["Parity Technologies <admin@parity.io>"]
+build = 'build.rs'
+edition = '2018'
+
+[[bin]]
+name = 'cumulus-test-parachain-collator'
+path = 'src/main.rs'
+
+[dependencies]
+derive_more = '0.15.0'
+exit-future = '0.1.4'
+futures = '0.1.29'
+log = '0.4.8'
+parking_lot = '0.9.0'
+tokio = '0.1.22'
+trie-root = '0.15.2'
+codec = { package = 'parity-scale-codec', version = '1.0.0' }
+parachain-runtime = { package = "cumulus-test-parachain-runtime", path = "runtime" }
+structopt = "0.2.2"
+ctrlc = { version = "3.1.3", features = ["termination"] }
+
+# Substrate dependencies
+sr-primitives = { git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+sr-io = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+substrate-cli = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+primitives = { package = "substrate-primitives", git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+substrate-executor = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+substrate-service = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+inherents = { package = "substrate-inherents", git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+transaction-pool = { package = "substrate-transaction-pool", git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+network = { package = "substrate-network", git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+substrate-client = { git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+basic-authorship = { package = "substrate-basic-authorship", git = "https://github.com/paritytech/substrate", branch = "bkchr-cumulus-branch" }
+
+# Cumulus dependencies
+cumulus-consensus = { path = "../../consensus" }
+cumulus-collator = { path = "../../collator" }
+
+[build-dependencies]
+vergen = '3.0.4'
+
+

cumulus/test/parachain/build.rs

@@ -0,0 +1,24 @@
+use std::{env, path::PathBuf};
+
+use vergen::{ConstantsFlags, generate_cargo_keys};
+
+const ERROR_MSG: &str = "Failed to generate metadata files";
+
+fn main() {
+	generate_cargo_keys(ConstantsFlags::SHA_SHORT).expect(ERROR_MSG);
+
+	let mut manifest_dir = PathBuf::from(
+		env::var("CARGO_MANIFEST_DIR").expect("`CARGO_MANIFEST_DIR` is always set by cargo.")
+	);
+
+	while manifest_dir.parent().is_some() {
+		if manifest_dir.join(".git/HEAD").exists() {
+			println!("cargo:rerun-if-changed={}", manifest_dir.join(".git/HEAD").display());
+			return
+		}
+
+		manifest_dir.pop();
+	}
+
+	println!("cargo:warning=Could not find `.git/HEAD` from manifest dir!");
+}

cumulus/test/parachain/runtime/Cargo.toml

@@ -0,0 +1,59 @@
+[package]
+name = 'cumulus-test-parachain-runtime'
+version = '0.1.0'
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = '2018'
+
+[dependencies]
+serde = { version = "1.0.101", optional = true, features = ["derive"] }
+safe-mix = { version = "1.0.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.0.6", default-features = false, features = ["derive"] }
+
+# Substrate dependencies
+rstd = { package = "sr-std", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+runtime-io = { package = "sr-io", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+version = { package = "sr-version", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+support = { package = "srml-support", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+primitives = { package = "substrate-primitives", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+substrate-session = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "bkchr-cumulus-branch" }
+balances = { package = "srml-balances", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+executive = { package = "srml-executive", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+indices = { package = "srml-indices", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+randomness-collective-flip = { package = "srml-randomness-collective-flip", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+system = { package = "srml-system", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+timestamp = { package = "srml-timestamp", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+sudo = { package = "srml-sudo", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+sr-primitives = { git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+client = { package = "substrate-client", git = "https://github.com/paritytech/substrate", default_features = false, branch = "bkchr-cumulus-branch" }
+offchain-primitives = { package = "substrate-offchain-primitives", git = "https://github.com/paritytech/substrate", default-features = false, branch = "bkchr-cumulus-branch" }
+
+# Cumulus dependencies
+cumulus-runtime = { path = "../../../runtime", default-features = false }
+
+[build-dependencies]
+wasm-builder-runner = { package = "substrate-wasm-builder-runner", version = "1.0.3" }
+
+[features]
+default = ['std']
+std = [
+	'codec/std',
+	'client/std',
+	'rstd/std',
+	'runtime-io/std',
+	'support/std',
+	'balances/std',
+	'executive/std',
+	'indices/std',
+	'primitives/std',
+	'sr-primitives/std',
+	'randomness-collective-flip/std',
+	'system/std',
+	'timestamp/std',
+	'sudo/std',
+	'version/std',
+	'serde',
+	'safe-mix/std',
+	'offchain-primitives/std',
+	'substrate-session/std',
+	'cumulus-runtime/std',
+]

cumulus/test/parachain/runtime/build.rs

@@ -0,0 +1,27 @@
+// Copyright 2019 Parity Technologies (UK) Ltd.
+// This file is part of Substrate.
+
+// 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::{build_current_project_with_rustflags, WasmBuilderSource};
+
+fn main() {
+	build_current_project_with_rustflags(
+		"wasm_binary.rs",
+		WasmBuilderSource::Crates("1.0.7"),
+		// This instructs LLD to export __heap_base as a global variable, which is used by the
+		// external memory allocator.
+		"-Clink-arg=--export=__heap_base",
+	);
+}

cumulus/test/parachain/runtime/src/lib.rs

@@ -0,0 +1,320 @@
+//! The Substrate Node Template 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"]
+
+// Make the WASM binary available.
+#[cfg(feature = "std")]
+include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
+
+use rstd::prelude::*;
+use primitives::{OpaqueMetadata, crypto::key_types};
+use sr_primitives::{
+	ApplyResult, transaction_validity::TransactionValidity, generic, create_runtime_str,
+	impl_opaque_keys, AnySignature
+};
+use sr_primitives::traits::{NumberFor, BlakeTwo256, Block as BlockT, StaticLookup, Verify, ConvertInto};
+use sr_primitives::weights::Weight;
+use client::{
+	block_builder::api::{CheckInherentsResult, InherentData, self as block_builder_api},
+	runtime_api as client_api, impl_runtime_apis
+};
+use version::RuntimeVersion;
+#[cfg(feature = "std")]
+use version::NativeVersion;
+
+// A few exports that help ease life for downstream crates.
+#[cfg(any(feature = "std", test))]
+pub use sr_primitives::BuildStorage;
+pub use timestamp::Call as TimestampCall;
+pub use balances::Call as BalancesCall;
+pub use sr_primitives::{Permill, Perbill};
+pub use support::{StorageValue, construct_runtime, parameter_types, traits::Randomness};
+
+/// 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 = AnySignature;
+
+/// 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;
+
+/// The type for looking up accounts. We don't expect more than 4 billion of them, but you
+/// never know...
+pub type AccountIndex = u32;
+
+/// Balance of an account.
+pub type Balance = u128;
+
+/// Index of a transaction in the chain.
+pub type Index = u32;
+
+/// A hash of some data used by the chain.
+pub type Hash = primitives::H256;
+
+/// Digest item type.
+pub type DigestItem = generic::DigestItem<Hash>;
+
+/// 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 datastructures.
+pub mod opaque {
+	use super::*;
+
+	pub use sr_primitives::OpaqueExtrinsic as UncheckedExtrinsic;
+
+	/// 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>;
+
+	pub type SessionHandlers = ();
+
+	impl_opaque_keys! {
+		pub struct SessionKeys {}
+	}
+}
+
+/// This runtime version.
+pub const VERSION: RuntimeVersion = RuntimeVersion {
+	spec_name: create_runtime_str!("wasm-test-parachain"),
+	impl_name: create_runtime_str!("wasm-test-parachain"),
+	authoring_version: 3,
+	spec_version: 4,
+	impl_version: 4,
+	apis: RUNTIME_API_VERSIONS,
+};
+
+
+pub const MILLISECS_PER_BLOCK: u64 = 6000;
+
+pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
+
+pub const EPOCH_DURATION_IN_BLOCKS: u32 = 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);
+
+/// The version infromation 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(),
+	}
+}
+
+parameter_types! {
+	pub const BlockHashCount: BlockNumber = 250;
+	pub const MaximumBlockWeight: Weight = 1_000_000;
+	pub const AvailableBlockRatio: Perbill = Perbill::from_percent(75);
+	pub const MaximumBlockLength: u32 = 5 * 1024 * 1024;
+	pub const Version: RuntimeVersion = VERSION;
+}
+
+impl system::Trait for Runtime {
+	/// 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 = Indices;
+	/// 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;
+	/// Update weight (to fee) multiplier per-block.
+	type WeightMultiplierUpdate = ();
+	/// The ubiquitous origin type.
+	type Origin = Origin;
+	/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
+	type BlockHashCount = BlockHashCount;
+	/// Maximum weight of each block. With a default weight system of 1byte == 1weight, 4mb is ok.
+	type MaximumBlockWeight = MaximumBlockWeight;
+	/// Maximum size of all encoded transactions (in bytes) that are allowed in one block.
+	type MaximumBlockLength = MaximumBlockLength;
+	/// Portion of the block weight that is available to all normal transactions.
+	type AvailableBlockRatio = AvailableBlockRatio;
+	type Version = Version;
+}
+
+impl indices::Trait for Runtime {
+	/// The type for recording indexing into the account enumeration. If this ever overflows, there
+	/// will be problems!
+	type AccountIndex = u32;
+	/// Use the standard means of resolving an index hint from an id.
+	type ResolveHint = indices::SimpleResolveHint<Self::AccountId, Self::AccountIndex>;
+	/// Determine whether an account is dead.
+	type IsDeadAccount = Balances;
+	/// The ubiquitous event type.
+	type Event = Event;
+}
+
+parameter_types! {
+	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
+}
+
+impl timestamp::Trait for Runtime {
+	/// A timestamp: milliseconds since the unix epoch.
+	type Moment = u64;
+	type OnTimestampSet = ();
+	type MinimumPeriod = MinimumPeriod;
+}
+
+parameter_types! {
+	pub const ExistentialDeposit: u128 = 500;
+	pub const TransferFee: u128 = 0;
+	pub const CreationFee: u128 = 0;
+	pub const TransactionBaseFee: u128 = 0;
+	pub const TransactionByteFee: u128 = 1;
+}
+
+impl balances::Trait for Runtime {
+	/// The type for recording an account's balance.
+	type Balance = Balance;
+	/// What to do if an account's free balance gets zeroed.
+	type OnFreeBalanceZero = ();
+	/// What to do if a new account is created.
+	type OnNewAccount = Indices;
+	/// The ubiquitous event type.
+	type Event = Event;
+	type TransactionPayment = ();
+	type DustRemoval = ();
+	type TransferPayment = ();
+	type ExistentialDeposit = ExistentialDeposit;
+	type TransferFee = TransferFee;
+	type CreationFee = CreationFee;
+	type TransactionBaseFee = TransactionBaseFee;
+	type TransactionByteFee = TransactionByteFee;
+	type WeightToFee = ConvertInto;
+}
+
+impl sudo::Trait for Runtime {
+	type Event = Event;
+	type Proposal = Call;
+}
+
+construct_runtime! {
+	pub enum Runtime where
+		Block = Block,
+		NodeBlock = opaque::Block,
+		UncheckedExtrinsic = UncheckedExtrinsic
+	{
+		System: system::{Module, Call, Storage, Config, Event},
+		Timestamp: timestamp::{Module, Call, Storage, Inherent},
+		Indices: indices::{default, Config<T>},
+		Balances: balances::{default, Error},
+		Sudo: sudo,
+		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Call, Storage},
+	}
+}
+
+/// 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 = (
+	system::CheckVersion<Runtime>,
+	system::CheckGenesis<Runtime>,
+	system::CheckEra<Runtime>,
+	system::CheckNonce<Runtime>,
+	system::CheckWeight<Runtime>,
+	balances::TakeFees<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 = executive::Executive<Runtime, Block, system::ChainContext<Runtime>, Runtime, AllModules>;
+
+impl_runtime_apis! {
+	impl client_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 client_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) -> ApplyResult {
+			Executive::apply_extrinsic(extrinsic)
+		}
+
+		fn finalize_block() -> <Block as BlockT>::Header {
+			Executive::finalize_block()
+		}
+
+		fn inherent_extrinsics(data: InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
+			data.create_extrinsics()
+		}
+
+		fn check_inherents(block: Block, data: InherentData) -> CheckInherentsResult {
+			data.check_extrinsics(&block)
+		}
+
+		fn random_seed() -> <Block as BlockT>::Hash {
+			RandomnessCollectiveFlip::random_seed()
+		}
+	}
+
+	impl client_api::TaggedTransactionQueue<Block> for Runtime {
+		fn validate_transaction(tx: <Block as BlockT>::Extrinsic) -> TransactionValidity {
+			Executive::validate_transaction(tx)
+		}
+	}
+
+	impl offchain_primitives::OffchainWorkerApi<Block> for Runtime {
+		fn offchain_worker(number: NumberFor<Block>) {
+			Executive::offchain_worker(number)
+		}
+	}
+
+	impl substrate_session::SessionKeys<Block> for Runtime {
+		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
+			let seed = seed.as_ref().map(|s| rstd::str::from_utf8(&s).expect("Seed is an utf8 string"));
+			opaque::SessionKeys::generate(seed)
+		}
+	}
+}
+
+cumulus_runtime::register_validate_block!(Block, Executive);

cumulus/test/parachain/src/chain_spec.rs

@@ -0,0 +1,79 @@
+use primitives::{Pair, Public};
+use parachain_runtime::{
+	AccountId, BalancesConfig, GenesisConfig, SudoConfig, IndicesConfig, SystemConfig, WASM_BINARY,
+};
+use substrate_service;
+
+/// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
+pub type ChainSpec = substrate_service::ChainSpec<GenesisConfig>;
+
+/// Helper function to generate a crypto pair from seed
+pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
+	TPublic::Pair::from_string(&format!("//{}", seed), None)
+		.expect("static values are valid; qed")
+		.public()
+}
+
+/// Helper function to generate stash, controller and session key from seed
+pub fn get_authority_keys_from_seed(seed: &str) -> (AccountId, AccountId) {
+	(get_from_seed::<AccountId>(&format!("{}//stash", seed)), get_from_seed::<AccountId>(seed))
+}
+
+/// Returns the chain spec.
+pub fn get_chain_spec() -> ChainSpec {
+	ChainSpec::from_genesis(
+		"Local Testnet",
+		"local_testnet",
+		|| testnet_genesis(
+			vec![
+				get_authority_keys_from_seed("Alice"),
+				get_authority_keys_from_seed("Bob"),
+			],
+			get_from_seed::<AccountId>("Alice"),
+			vec![
+				get_from_seed::<AccountId>("Alice"),
+				get_from_seed::<AccountId>("Bob"),
+				get_from_seed::<AccountId>("Charlie"),
+				get_from_seed::<AccountId>("Dave"),
+				get_from_seed::<AccountId>("Eve"),
+				get_from_seed::<AccountId>("Ferdie"),
+				get_from_seed::<AccountId>("Alice//stash"),
+				get_from_seed::<AccountId>("Bob//stash"),
+				get_from_seed::<AccountId>("Charlie//stash"),
+				get_from_seed::<AccountId>("Dave//stash"),
+				get_from_seed::<AccountId>("Eve//stash"),
+				get_from_seed::<AccountId>("Ferdie//stash"),
+			],
+			true,
+		),
+		vec![],
+		None,
+		None,
+		None,
+		None,
+	)
+}
+
+fn testnet_genesis(
+	initial_authorities: Vec<(AccountId, AccountId)>,
+	root_key: AccountId,
+	endowed_accounts: Vec<AccountId>,
+	_enable_println: bool,
+) -> GenesisConfig {
+	GenesisConfig {
+		system: Some(SystemConfig {
+			code: WASM_BINARY.to_vec(),
+			changes_trie_config: Default::default(),
+		}),
+		indices: Some(IndicesConfig {
+			ids: endowed_accounts.clone(),
+		}),
+		balances: Some(BalancesConfig {
+			balances: endowed_accounts.iter().cloned().map(|k|(k, 1 << 60)).collect(),
+			vesting: vec![],
+		}),
+		sudo: Some(SudoConfig {
+			key: root_key,
+		}),
+	}
+}

cumulus/test/parachain/src/cli.rs

@@ -0,0 +1,133 @@
+use crate::{chain_spec, service};
+
+use parachain_runtime::Block;
+
+pub use substrate_cli::{VersionInfo, IntoExit, error};
+use substrate_cli::{informant, parse_and_prepare, ParseAndPrepare, NoCustom};
+use substrate_service::{AbstractService, Roles as ServiceRoles, Configuration};
+use sr_primitives::{traits::{Block as BlockT, Header as HeaderT, Hash as HashT}, BuildStorage};
+use substrate_client::genesis;
+use primitives::hexdisplay::HexDisplay;
+
+use codec::Encode;
+
+use log::info;
+
+use std::{path::PathBuf, cell::RefCell};
+
+use structopt::StructOpt;
+
+use futures::{sync::oneshot, future, Future};
+
+/// Sub-commands supported by the collator.
+#[derive(Debug, StructOpt, Clone)]
+enum SubCommands {
+	/// Export the genesis state of the parachain.
+	#[structopt(name = "export-genesis-state")]
+	ExportGenesisState(ExportGenesisStateCommand),
+}
+
+impl substrate_cli::GetLogFilter for SubCommands {
+	fn get_log_filter(&self) -> Option<String> { None }
+}
+
+/// Command for exporting the genesis state of the parachain
+#[derive(Debug, StructOpt, Clone)]
+struct ExportGenesisStateCommand {
+	/// Output file name or stdout if unspecified.
+	#[structopt(parse(from_os_str))]
+	pub output: Option<PathBuf>,
+}
+
+/// Parse command line arguments into service configuration.
+pub fn run<I, T, E>(args: I, exit: E, version: VersionInfo) -> error::Result<()>
+	where
+		I: IntoIterator<Item = T>,
+		T: Into<std::ffi::OsString> + Clone,
+		E: IntoExit,
+{
+	type Config<T> = Configuration<(), T>;
+	match parse_and_prepare::<SubCommands, NoCustom, _>(
+		&version,
+		"cumulus-test-parachain-collator",
+		args,
+	) {
+		ParseAndPrepare::Run(cmd) => cmd.run(load_spec, exit,
+		|exit, _cli_args, _custom_args, config: Config<_>| {
+			info!("{}", version.name);
+			info!("  version {}", config.full_version());
+			info!("  by {}, 2019", version.author);
+			info!("Chain specification: {}", config.chain_spec.name());
+			info!("Node name: {}", config.name);
+			info!("Roles: {:?}", config.roles);
+			panic!();
+			// match config.roles {
+			// 	ServiceRoles::LIGHT => unimplemented!("Light client not supported!"),
+			// 	_ => unimplemented!(),
+			// }.map_err(|e| format!("{:?}", e))
+		}),
+		ParseAndPrepare::BuildSpec(cmd) => cmd.run(load_spec),
+		ParseAndPrepare::ExportBlocks(cmd) => cmd.run_with_builder(|config: Config<_>|
+			Ok(new_full_start!(config).0), load_spec, exit),
+		ParseAndPrepare::ImportBlocks(cmd) => cmd.run_with_builder(|config: Config<_>|
+			Ok(new_full_start!(config).0), load_spec, exit),
+		ParseAndPrepare::PurgeChain(cmd) => cmd.run(load_spec),
+		ParseAndPrepare::RevertChain(cmd) => cmd.run_with_builder(|config: Config<_>|
+			Ok(new_full_start!(config).0), load_spec),
+		ParseAndPrepare::CustomCommand(SubCommands::ExportGenesisState(cmd)) => {
+			export_genesis_state(cmd.output)
+		}
+	}?;
+
+	Ok(())
+}
+
+fn load_spec(id: &str) -> Result<Option<chain_spec::ChainSpec>, String> {
+	Ok(Some(chain_spec::get_chain_spec()))
+}
+
+/// Export the genesis state of the parachain.
+fn export_genesis_state(output: Option<PathBuf>) -> error::Result<()> {
+	let storage = chain_spec::get_chain_spec().build_storage()?;
+
+	let child_roots = storage.1.iter().map(|(sk, child_map)| {
+		let state_root = <<<Block as BlockT>::Header as HeaderT>::Hashing as HashT>::trie_root(
+			child_map.clone().into_iter().collect()
+		);
+		(sk.clone(), state_root.encode())
+	});
+	let state_root = <<<Block as BlockT>::Header as HeaderT>::Hashing as HashT>::trie_root(
+		storage.0.clone().into_iter().chain(child_roots).collect()
+	);
+	let block: Block = genesis::construct_genesis_block(state_root);
+
+	let header_hex = format!("0x{:?}", HexDisplay::from(&block.header().encode()));
+
+	if let Some(output) = output {
+		std::fs::write(output, header_hex)?;
+	} else {
+		println!("{}", header_hex);
+	}
+
+	Ok(())
+}
+
+// handles ctrl-c
+pub struct Exit;
+impl IntoExit for Exit {
+	type Exit = future::MapErr<oneshot::Receiver<()>, fn(oneshot::Canceled) -> ()>;
+	fn into_exit(self) -> Self::Exit {
+		// can't use signal directly here because CtrlC takes only `Fn`.
+		let (exit_send, exit) = oneshot::channel();
+
+		let exit_send_cell = RefCell::new(Some(exit_send));
+		ctrlc::set_handler(move || {
+			let exit_send = exit_send_cell.try_borrow_mut().expect("signal handler not reentrant; qed").take();
+			if let Some(exit_send) = exit_send {
+				exit_send.send(()).expect("Error sending exit notification");
+			}
+		}).expect("Error setting Ctrl-C handler");
+
+		exit.map_err(drop)
+	}
+}

cumulus/test/parachain/src/main.rs

@@ -0,0 +1,25 @@
+//! Substrate Node Template CLI library.
+
+#![warn(missing_docs)]
+#![warn(unused_extern_crates)]
+
+mod chain_spec;
+#[macro_use]
+mod service;
+mod cli;
+
+pub use substrate_cli::{VersionInfo, IntoExit, error};
+
+fn main() -> Result<(), cli::error::Error> {
+	let version = VersionInfo {
+		name: "Cumulus Test Parachain Collator",
+		commit: env!("VERGEN_SHA_SHORT"),
+		version: env!("CARGO_PKG_VERSION"),
+		executable_name: "cumulus-test-parachain-collator",
+		author: "Parity Technologies <admin@parity.io>",
+		description: "Cumulus test parachain collator",
+		support_url: "https://github.com/paritytech/cumulus/issues/new",
+	};
+
+	cli::run(std::env::args(), cli::Exit, version)
+}

cumulus/test/parachain/src/service.rs

@@ -0,0 +1,73 @@
+//! Service and ServiceFactory implementation. Specialized wrapper over substrate service.
+
+use std::sync::Arc;
+use std::time::Duration;
+use substrate_client::LongestChain;
+use futures::prelude::*;
+use parachain_runtime::{self, GenesisConfig, opaque::Block, RuntimeApi};
+use substrate_service::{error::{Error as ServiceError}, AbstractService, Configuration, ServiceBuilder};
+use transaction_pool::{self, txpool::{Pool as TransactionPool}};
+use inherents::InherentDataProviders;
+use network::construct_simple_protocol;
+use substrate_executor::native_executor_instance;
+pub use substrate_executor::NativeExecutor;
+
+// Our native executor instance.
+native_executor_instance!(
+	pub Executor,
+	parachain_runtime::api::dispatch,
+	parachain_runtime::native_version,
+);
+
+construct_simple_protocol! {
+	/// Demo protocol attachment for substrate.
+	pub struct NodeProtocol where Block = Block { }
+}
+
+/// Starts a `ServiceBuilder` for a full service.
+///
+/// Use this macro if you don't actually need the full service, but just the builder in order to
+/// be able to perform chain operations.
+macro_rules! new_full_start {
+	($config:expr) => {{
+		let inherent_data_providers = inherents::InherentDataProviders::new();
+
+		let builder = substrate_service::ServiceBuilder::new_full::<
+			parachain_runtime::opaque::Block, parachain_runtime::RuntimeApi, crate::service::Executor,
+		>($config)?
+			.with_select_chain(|_config, backend| {
+				Ok(substrate_client::LongestChain::new(backend.clone()))
+			})?
+			.with_transaction_pool(|config, client|
+				Ok(transaction_pool::txpool::Pool::new(config, transaction_pool::FullChainApi::new(client)))
+			)?
+			.with_import_queue(|_config, client, _, _| {
+				let import_queue = cumulus_consensus::import_queue::import_queue(
+					client.clone(),
+					client,
+					inherent_data_providers.clone(),
+				)?;
+
+				Ok(import_queue)
+			})?;
+
+		(builder, inherent_data_providers)
+	}}
+}
+
+/// Builds a new service for a full client.
+pub fn new_full<C: Send + Default + 'static>(config: Configuration<C, GenesisConfig>)
+	-> Result<impl AbstractService, ServiceError>
+{
+	let is_authority = config.roles.is_authority();
+	let name = config.name.clone();
+	let disable_grandpa = config.disable_grandpa;
+	let force_authoring = config.force_authoring;
+
+	let (builder, inherent_data_providers) = new_full_start!(config);
+
+	let service = builder.with_network_protocol(|_| Ok(NodeProtocol::new()))?.build()?;
+
+	Ok(service)
+}
+