Penpal testing runtime (#1254)

* adapt to common good paras * fmt * Updated to leave parachain-template alone * use norm_id + cargo fmt * removed comment as we are not touching parachain template * is_penpal * updated code to new locations * changes required to get penpal running * cargo fmt * remove warning, rename chain * Update polkadot-parachain/src/command.rs * Update polkadot-parachain/src/command.rs Co-authored-by: Ignacio Palacios <ignacio.palacios.santos@gmail.com> * remove now moved functions * added runtime description * add missing copyright notices * more copyright notices. Co-authored-by: NachoPal <ignacio.palacios.santos@gmail.com>
2026-04-29 20:47:56 +00:00 · 2022-07-12 13:59:41 +01:00
parent a56dbabbbd
commit 8f613256be
15 changed files with 1825 additions and 13 deletions
@@ -6684,6 +6684,66 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"

+[[package]]
+name = "penpal-runtime"
+version = "0.1.0"
+dependencies = [
+ "cumulus-pallet-aura-ext",
+ "cumulus-pallet-dmp-queue",
+ "cumulus-pallet-parachain-system",
+ "cumulus-pallet-session-benchmarking",
+ "cumulus-pallet-xcm",
+ "cumulus-pallet-xcmp-queue",
+ "cumulus-primitives-core",
+ "cumulus-primitives-timestamp",
+ "cumulus-primitives-utility",
+ "frame-benchmarking",
+ "frame-executive",
+ "frame-support",
+ "frame-system",
+ "frame-system-benchmarking",
+ "frame-system-rpc-runtime-api",
+ "frame-try-runtime",
+ "hex-literal",
+ "log",
+ "pallet-asset-tx-payment",
+ "pallet-assets",
+ "pallet-aura",
+ "pallet-authorship",
+ "pallet-balances",
+ "pallet-collator-selection",
+ "pallet-session",
+ "pallet-sudo",
+ "pallet-timestamp",
+ "pallet-transaction-payment",
+ "pallet-transaction-payment-rpc-runtime-api",
+ "pallet-xcm",
+ "parachain-info",
+ "parity-scale-codec",
+ "polkadot-parachain 0.9.25",
+ "polkadot-primitives",
+ "polkadot-runtime-common",
+ "scale-info",
+ "serde",
+ "smallvec",
+ "sp-api",
+ "sp-block-builder",
+ "sp-consensus-aura",
+ "sp-core",
+ "sp-inherents",
+ "sp-io",
+ "sp-offchain",
+ "sp-runtime",
+ "sp-session",
+ "sp-std",
+ "sp-transaction-pool",
+ "sp-version",
+ "substrate-wasm-builder",
+ "xcm",
+ "xcm-builder",
+ "xcm-executor",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.1.0"
@@ -7590,6 +7650,7 @@ dependencies = [
 "pallet-transaction-payment-rpc",
 "parachains-common",
 "parity-scale-codec",
+ "penpal-runtime",
 "polkadot-cli",
 "polkadot-parachain 0.9.26",
 "polkadot-primitives",
@@ -35,6 +35,7 @@ members = [
 	"parachains/runtimes/assets/statemine",
 	"parachains/runtimes/assets/westmint",
 	"parachains/runtimes/contracts/contracts-rococo",
+	"parachains/runtimes/testing/penpal",
 	"test/client",
 	"test/relay-sproof-builder",
 	"test/relay-validation-worker-provider",
@@ -0,0 +1,151 @@
+[package]
+name = "penpal-runtime"
+version = "0.1.0"
+authors = ["Anonymous"]
+description = "A parachain for communication back and forth with XCM of assets and uniques."
+license = "Unlicense"
+homepage = "https://substrate.io"
+repository = "https://github.com/paritytech/cumulus/"
+edition = "2021"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[build-dependencies]
+substrate-wasm-builder = { git = "https://github.com/paritytech/substrate", branch = "master" }
+
+[dependencies]
+codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = ["derive"] }
+hex-literal = { version = "0.3.4", optional = true }
+log = { version = "0.4.16", default-features = false }
+scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
+serde = { version = "1.0.132", optional = true, features = ["derive"] }
+smallvec = "1.6.1"
+
+# Substrate
+frame-benchmarking = { git = "https://github.com/paritytech/substrate", default-features = false, optional = true, branch = "master" }
+frame-executive = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+frame-support = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+frame-system = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+frame-system-benchmarking = { git = "https://github.com/paritytech/substrate", default-features = false, optional = true, branch = "master" }
+frame-system-rpc-runtime-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+frame-try-runtime = { git = "https://github.com/paritytech/substrate", default-features = false, optional = true, branch = "master" }
+pallet-aura = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-authorship = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-balances = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-session = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-sudo = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-timestamp = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-transaction-payment = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-transaction-payment-rpc-runtime-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-asset-tx-payment = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+pallet-assets = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-block-builder = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-consensus-aura = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-core = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-inherents = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-io = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-offchain = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-runtime = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-session = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-std = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-transaction-pool = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+sp-version = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
+
+# Polkadot
+polkadot-primitives = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+pallet-xcm = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+polkadot-parachain = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+polkadot-runtime-common = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+xcm = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+xcm-builder = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+xcm-executor = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+
+# Cumulus
+cumulus-pallet-aura-ext = { path = "../../../../pallets/aura-ext", default-features = false }
+cumulus-pallet-dmp-queue = { path = "../../../../pallets/dmp-queue", default-features = false }
+cumulus-pallet-parachain-system = { path = "../../../../pallets/parachain-system", default-features = false }
+cumulus-pallet-session-benchmarking = {path = "../../../../pallets/session-benchmarking", default-features = false, version = "3.0.0"}
+cumulus-pallet-xcm = { path = "../../../../pallets/xcm", default-features = false }
+cumulus-pallet-xcmp-queue = { path = "../../../../pallets/xcmp-queue", default-features = false }
+cumulus-primitives-core = { path = "../../../../primitives/core", default-features = false }
+cumulus-primitives-timestamp = { path = "../../../../primitives/timestamp", default-features = false }
+cumulus-primitives-utility = { path = "../../../../primitives/utility", default-features = false }
+pallet-collator-selection = { path = "../../../../pallets/collator-selection", default-features = false }
+parachain-info = { path = "../../../../parachains/pallets/parachain-info", default-features = false }
+
+[features]
+default = [
+	"std",
+]
+std = [
+	"codec/std",
+	"log/std",
+	"scale-info/std",
+	"serde",
+	"cumulus-pallet-aura-ext/std",
+	"cumulus-pallet-dmp-queue/std",
+	"cumulus-pallet-parachain-system/std",
+	"cumulus-pallet-xcm/std",
+	"cumulus-pallet-xcmp-queue/std",
+	"cumulus-primitives-core/std",
+	"cumulus-primitives-timestamp/std",
+	"cumulus-primitives-utility/std",
+	"frame-executive/std",
+	"frame-support/std",
+	"frame-system-rpc-runtime-api/std",
+	"frame-system/std",
+	"pallet-aura/std",
+	"pallet-authorship/std",
+	"pallet-balances/std",
+	"pallet-collator-selection/std",
+	"pallet-session/std",
+	"pallet-sudo/std",
+	"pallet-timestamp/std",
+	"pallet-transaction-payment-rpc-runtime-api/std",
+	"pallet-transaction-payment/std",
+	"pallet-assets/std",
+	"pallet-asset-tx-payment/std",
+	"pallet-xcm/std",
+	"polkadot-primitives/std",
+	"parachain-info/std",
+	"polkadot-parachain/std",
+	"polkadot-runtime-common/std",
+	"sp-api/std",
+	"sp-block-builder/std",
+	"sp-consensus-aura/std",
+	"sp-core/std",
+	"sp-inherents/std",
+	"sp-io/std",
+	"sp-offchain/std",
+	"sp-runtime/std",
+	"sp-session/std",
+	"sp-std/std",
+	"sp-transaction-pool/std",
+	"sp-version/std",
+	"xcm-builder/std",
+	"xcm-executor/std",
+	"xcm/std",
+]
+
+runtime-benchmarks = [
+	"hex-literal",
+	"frame-benchmarking/runtime-benchmarks",
+	"frame-support/runtime-benchmarks",
+	"frame-system-benchmarking",
+	"frame-system/runtime-benchmarks",
+	"pallet-balances/runtime-benchmarks",
+	"pallet-collator-selection/runtime-benchmarks",
+	"pallet-timestamp/runtime-benchmarks",
+	"pallet-xcm/runtime-benchmarks",
+	"sp-runtime/runtime-benchmarks",
+	"xcm-builder/runtime-benchmarks",
+	"cumulus-pallet-session-benchmarking/runtime-benchmarks",
+	"cumulus-pallet-xcmp-queue/runtime-benchmarks",
+]
+
+try-runtime = [
+	"frame-executive/try-runtime",
+	"frame-try-runtime",
+]
@@ -0,0 +1,25 @@
+// Copyright 2019-2021 Parity Technologies (UK) Ltd.
+// 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
+// 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 Cumulus.  If not, see <http://www.gnu.org/licenses/>.
+
+use substrate_wasm_builder::WasmBuilder;
+
+fn main() {
+	WasmBuilder::new()
+		.with_current_project()
+		.export_heap_base()
+		.import_memory()
+		.build()
+}
@@ -0,0 +1,774 @@
+// Copyright 2019-2022 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/>.
+
+//! The Penpal runtime is designed as a test runtime that can be created using an arbitrary parachain id.
+//! (and as such multiple parachains can be on the same relay node - though make sure you have enough relay
+//! nodes running to support this or you will get the not scheduled on a core error message.)
+//!
+//! The penpal runtime's primary use is as a partner when testing statemine/t with reserve asset transfers.
+#![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"));
+
+mod weights;
+pub mod xcm_config;
+
+use cumulus_pallet_parachain_system::RelayNumberStrictlyIncreases;
+use frame_support::{
+	construct_runtime, parameter_types,
+	traits::Everything,
+	weights::{
+		constants::WEIGHT_PER_SECOND, ConstantMultiplier, DispatchClass, Weight,
+		WeightToFeeCoefficient, WeightToFeeCoefficients, WeightToFeePolynomial,
+	},
+	PalletId,
+};
+use frame_system::{
+	limits::{BlockLength, BlockWeights},
+	EnsureRoot,
+};
+use smallvec::smallvec;
+use sp_api::impl_runtime_apis;
+pub use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_core::{crypto::KeyTypeId, OpaqueMetadata};
+use sp_runtime::{
+	create_runtime_str, generic, impl_opaque_keys,
+	traits::{AccountIdLookup, BlakeTwo256, Block as BlockT, IdentifyAccount, Verify},
+	transaction_validity::{TransactionSource, TransactionValidity},
+	ApplyExtrinsicResult, MultiSignature,
+};
+pub use sp_runtime::{traits::ConvertInto, MultiAddress, Perbill, Permill};
+use sp_std::prelude::*;
+#[cfg(feature = "std")]
+use sp_version::NativeVersion;
+use sp_version::RuntimeVersion;
+use xcm_config::{AssetsToBlockAuthor, XcmConfig, XcmOriginToTransactDispatchOrigin};
+
+#[cfg(any(feature = "std", test))]
+pub use sp_runtime::BuildStorage;
+
+// Polkadot imports
+use polkadot_runtime_common::{BlockHashCount, SlowAdjustingFeeUpdate};
+
+use weights::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight};
+
+// XCM Imports
+use xcm::latest::prelude::BodyId;
+use xcm_executor::XcmExecutor;
+
+/// 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;
+
+/// 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 = sp_core::H256;
+
+/// An index to a block.
+pub type BlockNumber = u32;
+
+/// The address format for describing accounts.
+pub type Address = 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>;
+
+// Id used for identifying assets.
+pub type AssetId = u32;
+
+/// The SignedExtension to the basic transaction logic.
+pub type SignedExtra = (
+	frame_system::CheckNonZeroSender<Runtime>,
+	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_asset_tx_payment::ChargeAssetTxPayment<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,
+>;
+
+/// 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, MAXIMUM_BLOCK_WEIGHT]`
+///   - `[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 Rococo, extrinsic base weight (smallest non-zero weight) is mapped to 1 MILLIUNIT:
+		// in our template, we map to 1/10 of that, or 1/10 MILLIUNIT
+		let p = MILLIUNIT / 10;
+		let q = 100 * Balance::from(ExtrinsicBaseWeight::get());
+		smallvec![WeightToFeeCoefficient {
+			degree: 1,
+			negative: false,
+			coeff_frac: Perbill::from_rational(p % q, q),
+			coeff_integer: p / q,
+		}]
+	}
+}
+
+/// 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 {
+	use super::*;
+	use sp_runtime::{generic, traits::BlakeTwo256};
+
+	pub use sp_runtime::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>;
+}
+
+impl_opaque_keys! {
+	pub struct SessionKeys {
+		pub aura: Aura,
+	}
+}
+
+#[sp_version::runtime_version]
+pub const VERSION: RuntimeVersion = RuntimeVersion {
+	spec_name: create_runtime_str!("penpal-parachain"),
+	impl_name: create_runtime_str!("penpal-parachain"),
+	authoring_version: 1,
+	spec_version: 1,
+	impl_version: 0,
+	apis: RUNTIME_API_VERSIONS,
+	transaction_version: 1,
+	state_version: 1,
+};
+
+/// This determines the average expected block time that we are targeting.
+/// Blocks will be produced at a minimum duration defined by `SLOT_DURATION`.
+/// `SLOT_DURATION` is picked up by `pallet_timestamp` which is in turn picked
+/// up by `pallet_aura` to implement `fn slot_duration()`.
+///
+/// Change this to adjust the block time.
+pub const MILLISECS_PER_BLOCK: u64 = 12000;
+
+// NOTE: Currently it is not possible to change the slot duration after the chain has started.
+//       Attempting to do so will brick block production.
+pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
+
+// Time is measured by 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;
+
+// Unit = the base number of indivisible units for balances
+pub const UNIT: Balance = 1_000_000_000_000;
+pub const MILLIUNIT: Balance = 1_000_000_000;
+pub const MICROUNIT: Balance = 1_000_000;
+
+/// The existential deposit. Set to 1/10 of the Connected Relay Chain.
+pub const EXISTENTIAL_DEPOSIT: Balance = MILLIUNIT;
+
+/// We assume that ~5% of the block weight is consumed by `on_initialize` handlers. This is
+/// used to limit the maximal weight of a single extrinsic.
+const AVERAGE_ON_INITIALIZE_RATIO: Perbill = Perbill::from_percent(5);
+
+/// We allow `Normal` extrinsics to fill up the block up to 75%, the rest can be used by
+/// `Operational` extrinsics.
+const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
+
+/// We allow for 0.5 of a second of compute with a 12 second average block time.
+const MAXIMUM_BLOCK_WEIGHT: Weight = WEIGHT_PER_SECOND / 2;
+
+/// 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() }
+}
+
+parameter_types! {
+	pub const Version: RuntimeVersion = VERSION;
+
+	// This part is copied from Substrate's `bin/node/runtime/src/lib.rs`.
+	//  The `RuntimeBlockLength` and `RuntimeBlockWeights` exist here because the
+	// `DeletionWeightLimit` and `DeletionQueueDepth` depend on those to parameterize
+	// the lazy contract deletion.
+	pub RuntimeBlockLength: BlockLength =
+		BlockLength::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
+	pub RuntimeBlockWeights: BlockWeights = BlockWeights::builder()
+		.base_block(BlockExecutionWeight::get())
+		.for_class(DispatchClass::all(), |weights| {
+			weights.base_extrinsic = ExtrinsicBaseWeight::get();
+		})
+		.for_class(DispatchClass::Normal, |weights| {
+			weights.max_total = Some(NORMAL_DISPATCH_RATIO * MAXIMUM_BLOCK_WEIGHT);
+		})
+		.for_class(DispatchClass::Operational, |weights| {
+			weights.max_total = Some(MAXIMUM_BLOCK_WEIGHT);
+			// Operational transactions have some extra reserved space, so that they
+			// are included even if block reached `MAXIMUM_BLOCK_WEIGHT`.
+			weights.reserved = Some(
+				MAXIMUM_BLOCK_WEIGHT - NORMAL_DISPATCH_RATIO * MAXIMUM_BLOCK_WEIGHT
+			);
+		})
+		.avg_block_initialization(AVERAGE_ON_INITIALIZE_RATIO)
+		.build_or_panic();
+	pub const SS58Prefix: u16 = 42;
+}
+
+// Configure FRAME pallets to include in runtime.
+
+impl frame_system::Config 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 = 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;
+	/// Runtime version.
+	type Version = Version;
+	/// Converts a module to an index of this module in the runtime.
+	type PalletInfo = PalletInfo;
+	/// The data to be stored in an account.
+	type AccountData = pallet_balances::AccountData<Balance>;
+	/// 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 weight of database operations that the runtime can invoke.
+	type DbWeight = RocksDbWeight;
+	/// The basic call filter to use in dispatchable.
+	type BaseCallFilter = Everything;
+	/// Weight information for the extrinsics of this pallet.
+	type SystemWeightInfo = ();
+	/// Block & extrinsics weights: base values and limits.
+	type BlockWeights = RuntimeBlockWeights;
+	/// The maximum length of a block (in bytes).
+	type BlockLength = RuntimeBlockLength;
+	/// This is used as an identifier of the chain. 42 is the generic substrate prefix.
+	type SS58Prefix = SS58Prefix;
+	/// The action to take on a Runtime Upgrade
+	type OnSetCode = cumulus_pallet_parachain_system::ParachainSetCode<Self>;
+	type MaxConsumers = frame_support::traits::ConstU32<16>;
+}
+
+parameter_types! {
+	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
+}
+
+impl pallet_timestamp::Config for Runtime {
+	/// A timestamp: milliseconds since the unix epoch.
+	type Moment = u64;
+	type OnTimestampSet = ();
+	type MinimumPeriod = MinimumPeriod;
+	type WeightInfo = ();
+}
+
+parameter_types! {
+	pub const UncleGenerations: u32 = 0;
+}
+
+impl pallet_authorship::Config for Runtime {
+	type FindAuthor = pallet_session::FindAccountFromAuthorIndex<Self, Aura>;
+	type UncleGenerations = UncleGenerations;
+	type FilterUncle = ();
+	type EventHandler = (CollatorSelection,);
+}
+
+parameter_types! {
+	pub const ExistentialDeposit: Balance = EXISTENTIAL_DEPOSIT;
+	pub const MaxLocks: u32 = 50;
+	pub const MaxReserves: u32 = 50;
+}
+
+impl pallet_balances::Config for Runtime {
+	type MaxLocks = MaxLocks;
+	/// 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 MaxReserves = MaxReserves;
+	type ReserveIdentifier = [u8; 8];
+}
+
+parameter_types! {
+	/// Relay Chain `TransactionByteFee` / 10
+	pub const TransactionByteFee: Balance = 10 * MICROUNIT;
+	pub const OperationalFeeMultiplier: u8 = 5;
+}
+
+impl pallet_transaction_payment::Config for Runtime {
+	type Event = Event;
+	type OnChargeTransaction = pallet_transaction_payment::CurrencyAdapter<Balances, ()>;
+	type WeightToFee = WeightToFee;
+	type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
+	type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;
+	type OperationalFeeMultiplier = OperationalFeeMultiplier;
+}
+
+parameter_types! {
+	pub const AssetDeposit: Balance = 0;
+	pub const AssetAccountDeposit: Balance = 0;
+	pub const ApprovalDeposit: Balance = 0;
+	pub const AssetsStringLimit: u32 = 50;
+	pub const MetadataDepositBase: Balance = 0;
+	pub const MetadataDepositPerByte: Balance = 0;
+}
+
+// /// We allow root and the Relay Chain council to execute privileged asset operations.
+// pub type AssetsForceOrigin =
+// 	EnsureOneOf<EnsureRoot<AccountId>, EnsureXcm<IsMajorityOfBody<KsmLocation, ExecutiveBody>>>;
+
+impl pallet_assets::Config for Runtime {
+	type Event = Event;
+	type Balance = Balance;
+	type AssetId = AssetId;
+	type Currency = Balances;
+	type ForceOrigin = EnsureRoot<AccountId>;
+	type AssetDeposit = AssetDeposit;
+	type MetadataDepositBase = MetadataDepositBase;
+	type MetadataDepositPerByte = MetadataDepositPerByte;
+	type ApprovalDeposit = ApprovalDeposit;
+	type StringLimit = AssetsStringLimit;
+	type Freezer = ();
+	type Extra = ();
+	type WeightInfo = pallet_assets::weights::SubstrateWeight<Runtime>;
+	type AssetAccountDeposit = AssetAccountDeposit;
+}
+
+parameter_types! {
+	pub const ReservedXcmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 4;
+	pub const ReservedDmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 4;
+}
+
+impl cumulus_pallet_parachain_system::Config for Runtime {
+	type Event = Event;
+	type OnSystemEvent = ();
+	type SelfParaId = parachain_info::Pallet<Runtime>;
+	type DmpMessageHandler = DmpQueue;
+	type ReservedDmpWeight = ReservedDmpWeight;
+	type OutboundXcmpMessageSource = XcmpQueue;
+	type XcmpMessageHandler = XcmpQueue;
+	type ReservedXcmpWeight = ReservedXcmpWeight;
+	type CheckAssociatedRelayNumber = RelayNumberStrictlyIncreases;
+}
+
+impl parachain_info::Config for Runtime {}
+
+impl cumulus_pallet_aura_ext::Config for Runtime {}
+
+impl cumulus_pallet_xcmp_queue::Config for Runtime {
+	type Event = Event;
+	type XcmExecutor = XcmExecutor<XcmConfig>;
+	type ChannelInfo = ParachainSystem;
+	type VersionWrapper = PolkadotXcm;
+	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
+	type ControllerOrigin = EnsureRoot<AccountId>;
+	type ControllerOriginConverter = XcmOriginToTransactDispatchOrigin;
+	type WeightInfo = ();
+}
+
+impl cumulus_pallet_dmp_queue::Config for Runtime {
+	type Event = Event;
+	type XcmExecutor = XcmExecutor<XcmConfig>;
+	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
+}
+
+parameter_types! {
+	pub const Period: u32 = 6 * HOURS;
+	pub const Offset: u32 = 0;
+	pub const MaxAuthorities: u32 = 100_000;
+}
+
+impl pallet_session::Config for Runtime {
+	type Event = Event;
+	type ValidatorId = <Self as frame_system::Config>::AccountId;
+	// we don't have stash and controller, thus we don't need the convert as well.
+	type ValidatorIdOf = pallet_collator_selection::IdentityCollator;
+	type ShouldEndSession = pallet_session::PeriodicSessions<Period, Offset>;
+	type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
+	type SessionManager = CollatorSelection;
+	// Essentially just Aura, but lets be pedantic.
+	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
+	type Keys = SessionKeys;
+	type WeightInfo = ();
+}
+
+impl pallet_aura::Config for Runtime {
+	type AuthorityId = AuraId;
+	type DisabledValidators = ();
+	type MaxAuthorities = MaxAuthorities;
+}
+
+parameter_types! {
+	pub const PotId: PalletId = PalletId(*b"PotStake");
+	pub const MaxCandidates: u32 = 1000;
+	pub const MinCandidates: u32 = 5;
+	pub const SessionLength: BlockNumber = 6 * HOURS;
+	pub const MaxInvulnerables: u32 = 100;
+	pub const ExecutiveBody: BodyId = BodyId::Executive;
+}
+
+// We allow root only to execute privileged collator selection operations.
+pub type CollatorSelectionUpdateOrigin = EnsureRoot<AccountId>;
+
+impl pallet_collator_selection::Config for Runtime {
+	type Event = Event;
+	type Currency = Balances;
+	type UpdateOrigin = CollatorSelectionUpdateOrigin;
+	type PotId = PotId;
+	type MaxCandidates = MaxCandidates;
+	type MinCandidates = MinCandidates;
+	type MaxInvulnerables = MaxInvulnerables;
+	// should be a multiple of session or things will get inconsistent
+	type KickThreshold = Period;
+	type ValidatorId = <Self as frame_system::Config>::AccountId;
+	type ValidatorIdOf = pallet_collator_selection::IdentityCollator;
+	type ValidatorRegistration = Session;
+	type WeightInfo = ();
+}
+
+impl pallet_asset_tx_payment::Config for Runtime {
+	type Fungibles = Assets;
+	type OnChargeAssetTransaction = pallet_asset_tx_payment::FungiblesAdapter<
+		pallet_assets::BalanceToAssetBalance<Balances, Runtime, ConvertInto>,
+		AssetsToBlockAuthor<Runtime>,
+	>;
+}
+
+impl pallet_sudo::Config for Runtime {
+	type Event = Event;
+	type Call = Call;
+}
+
+// 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 support stuff.
+		System: frame_system::{Pallet, Call, Config, Storage, Event<T>} = 0,
+		ParachainSystem: cumulus_pallet_parachain_system::{
+			Pallet, Call, Config, Storage, Inherent, Event<T>, ValidateUnsigned,
+		} = 1,
+		Timestamp: pallet_timestamp::{Pallet, Call, Storage, Inherent} = 2,
+		ParachainInfo: parachain_info::{Pallet, Storage, Config} = 3,
+
+		// Monetary stuff.
+		Balances: pallet_balances::{Pallet, Call, Storage, Config<T>, Event<T>} = 10,
+		TransactionPayment: pallet_transaction_payment::{Pallet, Storage, Event<T>} = 11,
+		AssetTxPayment: pallet_asset_tx_payment::{Pallet} = 12,
+
+		// Collator support. The order of these 4 are important and shall not change.
+		Authorship: pallet_authorship::{Pallet, Call, Storage} = 20,
+		CollatorSelection: pallet_collator_selection::{Pallet, Call, Storage, Event<T>, Config<T>} = 21,
+		Session: pallet_session::{Pallet, Call, Storage, Event, Config<T>} = 22,
+		Aura: pallet_aura::{Pallet, Storage, Config<T>} = 23,
+		AuraExt: cumulus_pallet_aura_ext::{Pallet, Storage, Config} = 24,
+
+		// XCM helpers.
+		XcmpQueue: cumulus_pallet_xcmp_queue::{Pallet, Call, Storage, Event<T>} = 30,
+		PolkadotXcm: pallet_xcm::{Pallet, Call, Event<T>, Origin, Config} = 31,
+		CumulusXcm: cumulus_pallet_xcm::{Pallet, Event<T>, Origin} = 32,
+		DmpQueue: cumulus_pallet_dmp_queue::{Pallet, Call, Storage, Event<T>} = 33,
+
+		// The main stage.
+		Assets: pallet_assets::{Pallet, Call, Storage, Event<T>} = 50,
+
+		Sudo: pallet_sudo::{Pallet, Call, Storage, Event<T>, Config<T>} = 255,
+	}
+);
+
+#[cfg(feature = "runtime-benchmarks")]
+#[macro_use]
+extern crate frame_benchmarking;
+
+#[cfg(feature = "runtime-benchmarks")]
+mod benches {
+	define_benchmarks!(
+		[frame_system, SystemBench::<Runtime>]
+		[pallet_balances, Balances]
+		[pallet_session, SessionBench::<Runtime>]
+		[pallet_timestamp, Timestamp]
+		[pallet_collator_selection, CollatorSelection]
+		[cumulus_pallet_xcmp_queue, XcmpQueue]
+	);
+}
+
+impl_runtime_apis! {
+	impl sp_consensus_aura::AuraApi<Block, AuraId> for Runtime {
+		fn slot_duration() -> sp_consensus_aura::SlotDuration {
+			sp_consensus_aura::SlotDuration::from_millis(Aura::slot_duration())
+		}
+
+		fn authorities() -> Vec<AuraId> {
+			Aura::authorities().into_inner()
+		}
+	}
+
+	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_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> {
+			SessionKeys::generate(seed)
+		}
+
+		fn decode_session_keys(
+			encoded: Vec<u8>,
+		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
+			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 cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
+		fn collect_collation_info(header: &<Block as BlockT>::Header) -> cumulus_primitives_core::CollationInfo {
+			ParachainSystem::collect_collation_info(header)
+		}
+	}
+
+	#[cfg(feature = "try-runtime")]
+	impl frame_try_runtime::TryRuntime<Block> for Runtime {
+		fn on_runtime_upgrade() -> (Weight, Weight) {
+			log::info!("try-runtime::on_runtime_upgrade parachain-template.");
+			let weight = Executive::try_runtime_upgrade().unwrap();
+			(weight, RuntimeBlockWeights::get().max_block)
+		}
+
+		fn execute_block_no_check(block: Block) -> Weight {
+			Executive::execute_block_no_check(block)
+		}
+	}
+
+	#[cfg(feature = "runtime-benchmarks")]
+	impl frame_benchmarking::Benchmark<Block> for Runtime {
+		fn benchmark_metadata(extra: bool) -> (
+			Vec<frame_benchmarking::BenchmarkList>,
+			Vec<frame_support::traits::StorageInfo>,
+		) {
+			use frame_benchmarking::{Benchmarking, BenchmarkList};
+			use frame_support::traits::StorageInfoTrait;
+			use frame_system_benchmarking::Pallet as SystemBench;
+			use cumulus_pallet_session_benchmarking::Pallet as SessionBench;
+
+			let mut list = Vec::<BenchmarkList>::new();
+			list_benchmarks!(list, extra);
+
+			let storage_info = AllPalletsWithSystem::storage_info();
+			return (list, storage_info)
+		}
+
+		fn dispatch_benchmark(
+			config: frame_benchmarking::BenchmarkConfig
+		) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, sp_runtime::RuntimeString> {
+			use frame_benchmarking::{Benchmarking, BenchmarkBatch, TrackedStorageKey};
+
+			use frame_system_benchmarking::Pallet as SystemBench;
+			impl frame_system_benchmarking::Config for Runtime {}
+
+			use cumulus_pallet_session_benchmarking::Pallet as SessionBench;
+			impl cumulus_pallet_session_benchmarking::Config for Runtime {}
+
+			let whitelist: Vec<TrackedStorageKey> = vec![
+				// Block Number
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac").to_vec().into(),
+				// Total Issuance
+				hex_literal::hex!("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80").to_vec().into(),
+				// Execution Phase
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a").to_vec().into(),
+				// Event Count
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850").to_vec().into(),
+				// System Events
+				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7").to_vec().into(),
+			];
+
+			let mut batches = Vec::<BenchmarkBatch>::new();
+			let params = (&config, &whitelist);
+			add_benchmarks!(params, batches);
+
+			if batches.is_empty() { return Err("Benchmark not found for this pallet.".into()) }
+			Ok(batches)
+		}
+	}
+}
+
+struct CheckInherents;
+
+impl cumulus_pallet_parachain_system::CheckInherents<Block> for CheckInherents {
+	fn check_inherents(
+		block: &Block,
+		relay_state_proof: &cumulus_pallet_parachain_system::RelayChainStateProof,
+	) -> sp_inherents::CheckInherentsResult {
+		let relay_chain_slot = relay_state_proof
+			.read_slot()
+			.expect("Could not read the relay chain slot from the proof");
+
+		let inherent_data =
+			cumulus_primitives_timestamp::InherentDataProvider::from_relay_chain_slot_and_duration(
+				relay_chain_slot,
+				sp_std::time::Duration::from_secs(6),
+			)
+			.create_inherent_data()
+			.expect("Could not create the timestamp inherent data");
+
+		inherent_data.check_extrinsics(block)
+	}
+}
+
+cumulus_pallet_parachain_system::register_validate_block! {
+	Runtime = Runtime,
+	BlockExecutor = cumulus_pallet_aura_ext::BlockExecutor::<Runtime, Executive>,
+	CheckInherents = CheckInherents,
+}
@@ -0,0 +1,46 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2022 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod constants {
+	use frame_support::{
+		parameter_types,
+		weights::{constants, Weight},
+	};
+
+	parameter_types! {
+		/// Importing a block with 0 Extrinsics.
+		pub const BlockExecutionWeight: Weight = 5_000_000 * constants::WEIGHT_PER_NANOS;
+	}
+
+	#[cfg(test)]
+	mod test_weights {
+		use frame_support::weights::constants;
+
+		/// Checks that the weight exists and is sane.
+		// NOTE: If this test fails but you are sure that the generated values are fine,
+		// you can delete it.
+		#[test]
+		fn sane() {
+			let w = super::constants::BlockExecutionWeight::get();
+
+			// At least 100 µs.
+			assert!(w >= 100 * constants::WEIGHT_PER_MICROS, "Weight should be at least 100 µs.");
+			// At most 50 ms.
+			assert!(w <= 50 * constants::WEIGHT_PER_MILLIS, "Weight should be at most 50 ms.");
+		}
+	}
+}
@@ -0,0 +1,46 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2022 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod constants {
+	use frame_support::{
+		parameter_types,
+		weights::{constants, Weight},
+	};
+
+	parameter_types! {
+		/// Executing a NO-OP `System::remarks` Extrinsic.
+		pub const ExtrinsicBaseWeight: Weight = 125_000 * constants::WEIGHT_PER_NANOS;
+	}
+
+	#[cfg(test)]
+	mod test_weights {
+		use frame_support::weights::constants;
+
+		/// Checks that the weight exists and is sane.
+		// NOTE: If this test fails but you are sure that the generated values are fine,
+		// you can delete it.
+		#[test]
+		fn sane() {
+			let w = super::constants::ExtrinsicBaseWeight::get();
+
+			// At least 10 µs.
+			assert!(w >= 10 * constants::WEIGHT_PER_MICROS, "Weight should be at least 10 µs.");
+			// At most 1 ms.
+			assert!(w <= constants::WEIGHT_PER_MILLIS, "Weight should be at most 1 ms.");
+		}
+	}
+}
@@ -0,0 +1,28 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2022 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Expose the auto generated weight files.
+
+pub mod block_weights;
+pub mod extrinsic_weights;
+pub mod paritydb_weights;
+pub mod rocksdb_weights;
+
+pub use block_weights::constants::BlockExecutionWeight;
+pub use extrinsic_weights::constants::ExtrinsicBaseWeight;
+pub use paritydb_weights::constants::ParityDbWeight;
+pub use rocksdb_weights::constants::RocksDbWeight;
@@ -0,0 +1,63 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2022 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod constants {
+	use frame_support::{
+		parameter_types,
+		weights::{constants, RuntimeDbWeight},
+	};
+
+	parameter_types! {
+		/// `ParityDB` can be enabled with a feature flag, but is still experimental. These weights
+		/// are available for brave runtime engineers who may want to try this out as default.
+		pub const ParityDbWeight: RuntimeDbWeight = RuntimeDbWeight {
+			read: 8_000 * constants::WEIGHT_PER_NANOS,
+			write: 50_000 * constants::WEIGHT_PER_NANOS,
+		};
+	}
+
+	#[cfg(test)]
+	mod test_db_weights {
+		use super::constants::ParityDbWeight as W;
+		use frame_support::weights::constants;
+
+		/// Checks that all weights exist and have sane values.
+		// NOTE: If this test fails but you are sure that the generated values are fine,
+		// you can delete it.
+		#[test]
+		fn sane() {
+			// At least 1 µs.
+			assert!(
+				W::get().reads(1) >= constants::WEIGHT_PER_MICROS,
+				"Read weight should be at least 1 µs."
+			);
+			assert!(
+				W::get().writes(1) >= constants::WEIGHT_PER_MICROS,
+				"Write weight should be at least 1 µs."
+			);
+			// At most 1 ms.
+			assert!(
+				W::get().reads(1) <= constants::WEIGHT_PER_MILLIS,
+				"Read weight should be at most 1 ms."
+			);
+			assert!(
+				W::get().writes(1) <= constants::WEIGHT_PER_MILLIS,
+				"Write weight should be at most 1 ms."
+			);
+		}
+	}
+}
@@ -0,0 +1,63 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2022 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod constants {
+	use frame_support::{
+		parameter_types,
+		weights::{constants, RuntimeDbWeight},
+	};
+
+	parameter_types! {
+		/// By default, Substrate uses `RocksDB`, so this will be the weight used throughout
+		/// the runtime.
+		pub const RocksDbWeight: RuntimeDbWeight = RuntimeDbWeight {
+			read: 25_000 * constants::WEIGHT_PER_NANOS,
+			write: 100_000 * constants::WEIGHT_PER_NANOS,
+		};
+	}
+
+	#[cfg(test)]
+	mod test_db_weights {
+		use super::constants::RocksDbWeight as W;
+		use frame_support::weights::constants;
+
+		/// Checks that all weights exist and have sane values.
+		// NOTE: If this test fails but you are sure that the generated values are fine,
+		// you can delete it.
+		#[test]
+		fn sane() {
+			// At least 1 µs.
+			assert!(
+				W::get().reads(1) >= constants::WEIGHT_PER_MICROS,
+				"Read weight should be at least 1 µs."
+			);
+			assert!(
+				W::get().writes(1) >= constants::WEIGHT_PER_MICROS,
+				"Write weight should be at least 1 µs."
+			);
+			// At most 1 ms.
+			assert!(
+				W::get().reads(1) <= constants::WEIGHT_PER_MILLIS,
+				"Read weight should be at most 1 ms."
+			);
+			assert!(
+				W::get().writes(1) <= constants::WEIGHT_PER_MILLIS,
+				"Write weight should be at most 1 ms."
+			);
+		}
+	}
+}
@@ -0,0 +1,378 @@
+// Copyright 2019-2022 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/>.
+
+//! Holds the XCM specific configuration that would otherwise be in lib.rs
+//!
+//! This configuration dictates how the Penpal chain will communicate with other chains.
+//!
+//! One of the main uses of the penpal chain will be to be a benefactor of reserve asset transfers
+//! with statemine as the reserve. At present no derivative tokens are minted on receipt of a
+//! ReserveAssetTransferDeposited message but that will but the intension will be to support this soon.
+use super::{
+	AccountId, AssetId as AssetIdPalletAssets, Assets, Balance, Balances, Call, Event, Origin,
+	ParachainInfo, ParachainSystem, PolkadotXcm, Runtime, WeightToFee, XcmpQueue,
+};
+use core::marker::PhantomData;
+use frame_support::{
+	log, match_types, parameter_types,
+	traits::{
+		fungibles::{self, Balanced, CreditOf},
+		Contains, Everything, Get, Nothing,
+	},
+	weights::Weight,
+};
+use pallet_asset_tx_payment::HandleCredit;
+use pallet_xcm::XcmPassthrough;
+use polkadot_parachain::primitives::Sibling;
+use polkadot_runtime_common::impls::ToAuthor;
+use sp_runtime::traits::Zero;
+use xcm::latest::prelude::*;
+use xcm_builder::{
+	AccountId32Aliases, AllowKnownQueryResponses, AllowSubscriptionsFrom,
+	AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom, AsPrefixedGeneralIndex,
+	ConvertedConcreteAssetId, CurrencyAdapter, EnsureXcmOrigin, FixedWeightBounds,
+	FungiblesAdapter, IsConcrete, LocationInverter, NativeAsset, ParentIsPreset,
+	RelayChainAsNative, SiblingParachainAsNative, SiblingParachainConvertsVia,
+	SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation, TakeWeightCredit,
+	UsingComponents,
+};
+use xcm_executor::{
+	traits::{FilterAssetLocation, JustTry, ShouldExecute},
+	XcmExecutor,
+};
+
+parameter_types! {
+	pub const RelayLocation: MultiLocation = MultiLocation::parent();
+	pub const RelayNetwork: NetworkId = NetworkId::Any;
+	pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
+	pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
+}
+
+/// Type for specifying how a `MultiLocation` can be converted into an `AccountId`. This is used
+/// when determining ownership of accounts for asset transacting and when attempting to use XCM
+/// `Transact` in order to determine the dispatch Origin.
+pub type LocationToAccountId = (
+	// The parent (Relay-chain) origin converts to the parent `AccountId`.
+	ParentIsPreset<AccountId>,
+	// Sibling parachain origins convert to AccountId via the `ParaId::into`.
+	SiblingParachainConvertsVia<Sibling, AccountId>,
+	// Straight up local `AccountId32` origins just alias directly to `AccountId`.
+	AccountId32Aliases<RelayNetwork, AccountId>,
+);
+
+/// Means for transacting assets on this chain.
+pub type CurrencyTransactor = CurrencyAdapter<
+	// Use this currency:
+	Balances,
+	// Use this currency when it is a fungible asset matching the given location or name:
+	IsConcrete<RelayLocation>,
+	// Do a simple punn to convert an AccountId32 MultiLocation into a native chain account ID:
+	LocationToAccountId,
+	// Our chain's account ID type (we can't get away without mentioning it explicitly):
+	AccountId,
+	// We don't track any teleports.
+	(),
+>;
+
+/// Means for transacting assets besides the native currency on this chain.
+pub type FungiblesTransactor = FungiblesAdapter<
+	// Use this fungibles implementation:
+	Assets,
+	// Use this currency when it is a fungible asset matching the given location or name:
+	ConvertedConcreteAssetId<
+		AssetIdPalletAssets,
+		Balance,
+		AsPrefixedGeneralIndex<CommonGoodAssetsPalletLocation, AssetIdPalletAssets, JustTry>,
+		JustTry,
+	>,
+	// Convert an XCM MultiLocation into a local account id:
+	LocationToAccountId,
+	// Our chain's account ID type (we can't get away without mentioning it explicitly):
+	AccountId,
+	// We only want to allow teleports of known assets. We use non-zero issuance as an indication
+	// that this asset is known.
+	NonZeroIssuance<AccountId, Assets>,
+	// The account to use for tracking teleports.
+	CheckingAccount,
+>;
+
+/// Means for transacting assets on this chain.
+pub type AssetTransactors = (CurrencyTransactor, FungiblesTransactor);
+
+/// This is the type we use to convert an (incoming) XCM origin into a local `Origin` instance,
+/// ready for dispatching a transaction with Xcm's `Transact`. There is an `OriginKind` which can
+/// biases the kind of local `Origin` it will become.
+pub type XcmOriginToTransactDispatchOrigin = (
+	// Sovereign account converter; this attempts to derive an `AccountId` from the origin location
+	// using `LocationToAccountId` and then turn that into the usual `Signed` origin. Useful for
+	// foreign chains who want to have a local sovereign account on this chain which they control.
+	SovereignSignedViaLocation<LocationToAccountId, Origin>,
+	// Native converter for Relay-chain (Parent) location; will converts to a `Relay` origin when
+	// recognized.
+	RelayChainAsNative<RelayChainOrigin, Origin>,
+	// Native converter for sibling Parachains; will convert to a `SiblingPara` origin when
+	// recognized.
+	SiblingParachainAsNative<cumulus_pallet_xcm::Origin, Origin>,
+	// Native signed account converter; this just converts an `AccountId32` origin into a normal
+	// `Origin::Signed` origin of the same 32-byte value.
+	SignedAccountId32AsNative<RelayNetwork, Origin>,
+	// Xcm origins can be represented natively under the Xcm pallet's Xcm origin.
+	XcmPassthrough<Origin>,
+);
+
+parameter_types! {
+	// One XCM operation is 1_000_000_000 weight - almost certainly a conservative estimate.
+	pub UnitWeightCost: Weight = 1_000_000_000;
+	pub const MaxInstructions: u32 = 100;
+}
+
+match_types! {
+	pub type ParentOrParentsExecutivePlurality: impl Contains<MultiLocation> = {
+		MultiLocation { parents: 1, interior: Here } |
+		MultiLocation { parents: 1, interior: X1(Plurality { id: BodyId::Executive, .. }) }
+	};
+	pub type CommonGoodAssetsParachain: impl Contains<MultiLocation> = {
+		MultiLocation { parents: 1, interior: X1(Parachain(1000)) }
+	};
+}
+
+//TODO: move DenyThenTry to polkadot's xcm module.
+/// Deny executing the xcm message if it matches any of the Deny filter regardless of anything else.
+/// If it passes the Deny, and matches one of the Allow cases then it is let through.
+pub struct DenyThenTry<Deny, Allow>(PhantomData<Deny>, PhantomData<Allow>)
+where
+	Deny: ShouldExecute,
+	Allow: ShouldExecute;
+
+impl<Deny, Allow> ShouldExecute for DenyThenTry<Deny, Allow>
+where
+	Deny: ShouldExecute,
+	Allow: ShouldExecute,
+{
+	fn should_execute<Call>(
+		origin: &MultiLocation,
+		message: &mut Xcm<Call>,
+		max_weight: Weight,
+		weight_credit: &mut Weight,
+	) -> Result<(), ()> {
+		Deny::should_execute(origin, message, max_weight, weight_credit)?;
+		Allow::should_execute(origin, message, max_weight, weight_credit)
+	}
+}
+
+// See issue #5233
+pub struct DenyReserveTransferToRelayChain;
+impl ShouldExecute for DenyReserveTransferToRelayChain {
+	fn should_execute<Call>(
+		origin: &MultiLocation,
+		message: &mut Xcm<Call>,
+		_max_weight: Weight,
+		_weight_credit: &mut Weight,
+	) -> Result<(), ()> {
+		if message.0.iter().any(|inst| {
+			matches!(
+				inst,
+				InitiateReserveWithdraw {
+					reserve: MultiLocation { parents: 1, interior: Here },
+					..
+				} | DepositReserveAsset { dest: MultiLocation { parents: 1, interior: Here }, .. } |
+					TransferReserveAsset {
+						dest: MultiLocation { parents: 1, interior: Here },
+						..
+					}
+			)
+		}) {
+			return Err(()) // Deny
+		}
+
+		// allow reserve transfers to arrive from relay chain
+		if matches!(origin, MultiLocation { parents: 1, interior: Here }) &&
+			message.0.iter().any(|inst| matches!(inst, ReserveAssetDeposited { .. }))
+		{
+			log::warn!(
+				target: "xcm::barriers",
+				"Unexpected ReserveAssetDeposited from the relay chain",
+			);
+		}
+		// Permit everything else
+		Ok(())
+	}
+}
+
+pub type Barrier = DenyThenTry<
+	DenyReserveTransferToRelayChain,
+	(
+		TakeWeightCredit,
+		AllowTopLevelPaidExecutionFrom<Everything>,
+		// Parent and its exec plurality get free execution
+		AllowUnpaidExecutionFrom<ParentOrParentsExecutivePlurality>,
+		// Assets Common Good parachain gets free execution
+		AllowUnpaidExecutionFrom<CommonGoodAssetsParachain>,
+		// Expected responses are OK.
+		AllowKnownQueryResponses<PolkadotXcm>,
+		// Subscriptions for version tracking are OK.
+		AllowSubscriptionsFrom<Everything>,
+	),
+>;
+
+/// Type alias to conveniently refer to `frame_system`'s `Config::AccountId`.
+pub type AccountIdOf<R> = <R as frame_system::Config>::AccountId;
+
+/// Asset filter that allows all assets from a certain location.
+pub struct AssetsFrom<T>(PhantomData<T>);
+impl<T: Get<MultiLocation>> FilterAssetLocation for AssetsFrom<T> {
+	fn filter_asset_location(asset: &MultiAsset, origin: &MultiLocation) -> bool {
+		let loc = T::get();
+		&loc == origin &&
+			matches!(asset, MultiAsset { id: AssetId::Concrete(asset_loc), fun: Fungible(_a) }
+			if asset_loc.match_and_split(&loc).is_some())
+	}
+}
+
+/// Allow checking in assets that have issuance > 0.
+pub struct NonZeroIssuance<AccountId, Assets>(PhantomData<(AccountId, Assets)>);
+impl<AccountId, Assets> Contains<<Assets as fungibles::Inspect<AccountId>>::AssetId>
+	for NonZeroIssuance<AccountId, Assets>
+where
+	Assets: fungibles::Inspect<AccountId>,
+{
+	fn contains(id: &<Assets as fungibles::Inspect<AccountId>>::AssetId) -> bool {
+		!Assets::total_issuance(*id).is_zero()
+	}
+}
+
+/// A `HandleCredit` implementation that naively transfers the fees to the block author.
+/// Will drop and burn the assets in case the transfer fails.
+pub struct AssetsToBlockAuthor<R>(PhantomData<R>);
+impl<R> HandleCredit<AccountIdOf<R>, pallet_assets::Pallet<R>> for AssetsToBlockAuthor<R>
+where
+	R: pallet_authorship::Config + pallet_assets::Config,
+	AccountIdOf<R>:
+		From<polkadot_primitives::v2::AccountId> + Into<polkadot_primitives::v2::AccountId>,
+{
+	fn handle_credit(credit: CreditOf<AccountIdOf<R>, pallet_assets::Pallet<R>>) {
+		if let Some(author) = pallet_authorship::Pallet::<R>::author() {
+			// In case of error: Will drop the result triggering the `OnDrop` of the imbalance.
+			let _ = pallet_assets::Pallet::<R>::resolve(&author, credit);
+		}
+	}
+}
+
+pub trait Reserve {
+	/// Returns assets reserve location.
+	fn reserve(&self) -> Option<MultiLocation>;
+}
+
+// Takes the chain part of a MultiAsset
+impl Reserve for MultiAsset {
+	fn reserve(&self) -> Option<MultiLocation> {
+		if let AssetId::Concrete(location) = self.id.clone() {
+			let first_interior = location.first_interior();
+			let parents = location.parent_count();
+			match (parents, first_interior.clone()) {
+				(0, Some(Parachain(id))) => Some(MultiLocation::new(0, X1(Parachain(id.clone())))),
+				(1, Some(Parachain(id))) => Some(MultiLocation::new(1, X1(Parachain(id.clone())))),
+				(1, _) => Some(MultiLocation::parent()),
+				_ => None,
+			}
+		} else {
+			None
+		}
+	}
+}
+
+/// A `FilterAssetLocation` implementation. Filters multi native assets whose
+/// reserve is same with `origin`.
+pub struct MultiNativeAsset;
+impl FilterAssetLocation for MultiNativeAsset {
+	fn filter_asset_location(asset: &MultiAsset, origin: &MultiLocation) -> bool {
+		if let Some(ref reserve) = asset.reserve() {
+			if reserve == origin {
+				return true
+			}
+		}
+		false
+	}
+}
+
+parameter_types! {
+	pub CommonGoodAssetsLocation: MultiLocation = MultiLocation::new(1, X1(Parachain(1000)));
+	// ALWAYS ensure that the index in PalletInstance stays up-to-date with
+	// Statemint's Assets pallet index
+	pub CommonGoodAssetsPalletLocation: MultiLocation =
+		MultiLocation::new(1, X2(Parachain(1000), PalletInstance(50)));
+	pub CheckingAccount: AccountId = PolkadotXcm::check_account();
+}
+
+pub type Reserves = (NativeAsset, AssetsFrom<CommonGoodAssetsLocation>);
+
+pub struct XcmConfig;
+impl xcm_executor::Config for XcmConfig {
+	type Call = Call;
+	type XcmSender = XcmRouter;
+	// How to withdraw and deposit an asset.
+	type AssetTransactor = AssetTransactors;
+	type OriginConverter = XcmOriginToTransactDispatchOrigin;
+	type IsReserve = MultiNativeAsset; // TODO: maybe needed to be replaced by Reserves
+	type IsTeleporter = NativeAsset;
+	type LocationInverter = LocationInverter<Ancestry>;
+	type Barrier = Barrier;
+	type Weigher = FixedWeightBounds<UnitWeightCost, Call, MaxInstructions>;
+	type Trader =
+		UsingComponents<WeightToFee, RelayLocation, AccountId, Balances, ToAuthor<Runtime>>;
+	type ResponseHandler = PolkadotXcm;
+	type AssetTrap = PolkadotXcm;
+	type AssetClaims = PolkadotXcm;
+	type SubscriptionService = PolkadotXcm;
+}
+
+/// No local origins on this chain are allowed to dispatch XCM sends/executions.
+pub type LocalOriginToLocation = SignedToAccountId32<Origin, AccountId, RelayNetwork>;
+
+/// The means for routing XCM messages which are not for local execution into the right message
+/// queues.
+pub type XcmRouter = (
+	// Two routers - use UMP to communicate with the relay chain:
+	cumulus_primitives_utility::ParentAsUmp<ParachainSystem, PolkadotXcm>,
+	// ..and XCMP to communicate with the sibling chains.
+	XcmpQueue,
+);
+
+impl pallet_xcm::Config for Runtime {
+	type Event = Event;
+	type SendXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
+	type XcmRouter = XcmRouter;
+	type ExecuteXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
+	type XcmExecuteFilter = Nothing;
+	// ^ Disable dispatchable execute on the XCM pallet.
+	// Needs to be `Everything` for local testing.
+	type XcmExecutor = XcmExecutor<XcmConfig>;
+	type XcmTeleportFilter = Everything;
+	type XcmReserveTransferFilter = Everything;
+	type Weigher = FixedWeightBounds<UnitWeightCost, Call, MaxInstructions>;
+	type LocationInverter = LocationInverter<Ancestry>;
+	type Origin = Origin;
+	type Call = Call;
+
+	const VERSION_DISCOVERY_QUEUE_SIZE: u32 = 100;
+	// ^ Override for AdvertisedXcmVersion default
+	type AdvertisedXcmVersion = pallet_xcm::CurrentXcmVersion;
+}
+
+impl cumulus_pallet_xcm::Config for Runtime {
+	type Event = Event;
+	type XcmExecutor = XcmExecutor<XcmConfig>;
+}
@@ -23,6 +23,7 @@ statemint-runtime = { path = "../parachains/runtimes/assets/statemint" }
 statemine-runtime = { path = "../parachains/runtimes/assets/statemine" }
 westmint-runtime = { path = "../parachains/runtimes/assets/westmint" }
 contracts-rococo-runtime = { path = "../parachains/runtimes/contracts/contracts-rococo" }
+penpal-runtime = { path = "../parachains/runtimes/testing/penpal" }
 jsonrpsee = { version = "0.14.0", features = ["server"] }
 parachains-common = { path = "../parachains/common" }

@@ -24,6 +24,7 @@ use sp_core::{crypto::UncheckedInto, sr25519, Pair, Public};
 use sp_runtime::traits::{IdentifyAccount, Verify};

 pub mod contracts;
+pub mod penpal;
 pub mod seedling;
 pub mod shell;
 pub mod statemint;
@@ -0,0 +1,136 @@
+// Copyright 2019-2021 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 crate::chain_spec::{get_account_id_from_seed, Extensions};
+use cumulus_primitives_core::ParaId;
+// use rococo_parachain_runtime::{AuraId};
+use crate::chain_spec::{get_collator_keys_from_seed, SAFE_XCM_VERSION};
+use sc_service::ChainType;
+use sp_core::sr25519;
+/// Specialized `ChainSpec` for the normal parachain runtime.
+pub type PenpalChainSpec = sc_service::GenericChainSpec<penpal_runtime::GenesisConfig, Extensions>;
+
+pub fn get_penpal_chain_spec(id: ParaId, relay_chain: &str) -> PenpalChainSpec {
+	// Give your base currency a unit name and decimal places
+	let mut properties = sc_chain_spec::Properties::new();
+	properties.insert("tokenSymbol".into(), "UNIT".into());
+	properties.insert("tokenDecimals".into(), 12u32.into());
+	properties.insert("ss58Format".into(), 42u32.into());
+
+	PenpalChainSpec::from_genesis(
+		// Name
+		"Penpal Parachain",
+		// ID
+		&format!("penpal-{}", relay_chain.replace("-local", "")),
+		ChainType::Development,
+		move || {
+			penpal_testnet_genesis(
+				// initial collators.
+				vec![
+					(
+						get_account_id_from_seed::<sr25519::Public>("Alice"),
+						get_collator_keys_from_seed::<penpal_runtime::AuraId>("Alice"),
+					),
+					(
+						get_account_id_from_seed::<sr25519::Public>("Bob"),
+						get_collator_keys_from_seed::<penpal_runtime::AuraId>("Bob"),
+					),
+				],
+				vec![
+					get_account_id_from_seed::<sr25519::Public>("Alice"),
+					get_account_id_from_seed::<sr25519::Public>("Bob"),
+					get_account_id_from_seed::<sr25519::Public>("Charlie"),
+					get_account_id_from_seed::<sr25519::Public>("Dave"),
+					get_account_id_from_seed::<sr25519::Public>("Eve"),
+					get_account_id_from_seed::<sr25519::Public>("Ferdie"),
+					get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
+					get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
+					get_account_id_from_seed::<sr25519::Public>("Charlie//stash"),
+					get_account_id_from_seed::<sr25519::Public>("Dave//stash"),
+					get_account_id_from_seed::<sr25519::Public>("Eve//stash"),
+					get_account_id_from_seed::<sr25519::Public>("Ferdie//stash"),
+				],
+				id,
+			)
+		},
+		Vec::new(),
+		None,
+		None,
+		None,
+		None,
+		Extensions {
+			relay_chain: relay_chain.into(), // You MUST set this to the correct network!
+			para_id: id.into(),
+		},
+	)
+}
+
+fn penpal_testnet_genesis(
+	invulnerables: Vec<(penpal_runtime::AccountId, penpal_runtime::AuraId)>,
+	endowed_accounts: Vec<penpal_runtime::AccountId>,
+	id: ParaId,
+) -> penpal_runtime::GenesisConfig {
+	penpal_runtime::GenesisConfig {
+		system: penpal_runtime::SystemConfig {
+			code: penpal_runtime::WASM_BINARY
+				.expect("WASM binary was not build, please build it!")
+				.to_vec(),
+		},
+		balances: penpal_runtime::BalancesConfig {
+			balances: endowed_accounts
+				.iter()
+				.cloned()
+				.map(|k| (k, penpal_runtime::EXISTENTIAL_DEPOSIT * 4096))
+				.collect(),
+		},
+		parachain_info: penpal_runtime::ParachainInfoConfig { parachain_id: id },
+		collator_selection: penpal_runtime::CollatorSelectionConfig {
+			invulnerables: invulnerables.iter().cloned().map(|(acc, _)| acc).collect(),
+			candidacy_bond: penpal_runtime::EXISTENTIAL_DEPOSIT * 16,
+			..Default::default()
+		},
+		session: penpal_runtime::SessionConfig {
+			keys: invulnerables
+				.into_iter()
+				.map(|(acc, aura)| {
+					(
+						acc.clone(),               // account id
+						acc,                       // validator id
+						penpal_session_keys(aura), // session keys
+					)
+				})
+				.collect(),
+		},
+		// no need to pass anything to aura, in fact it will panic if we do. Session will take care
+		// of this.
+		aura: Default::default(),
+		aura_ext: Default::default(),
+		parachain_system: Default::default(),
+		polkadot_xcm: penpal_runtime::PolkadotXcmConfig {
+			safe_xcm_version: Some(SAFE_XCM_VERSION),
+		},
+		sudo: penpal_runtime::SudoConfig {
+			key: Some(get_account_id_from_seed::<sr25519::Public>("Alice")),
+		},
+	}
+}
+
+/// Generate the session keys from individual elements.
+///
+/// The input must be a tuple of individual keys (a single arg for now since we have just one key).
+pub fn penpal_session_keys(keys: penpal_runtime::AuraId) -> penpal_runtime::SessionKeys {
+	penpal_runtime::SessionKeys { aura: keys }
+}
@@ -14,8 +14,6 @@
 // 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::net::SocketAddr;
-
 use codec::Encode;
 use cumulus_client_cli::generate_genesis_block;
 use cumulus_primitives_core::ParaId;
@@ -32,6 +30,7 @@ use sc_service::{
 };
 use sp_core::hexdisplay::HexDisplay;
 use sp_runtime::traits::{AccountIdConversion, Block as BlockT};
+use std::net::SocketAddr;

 use crate::{
 	chain_spec,
@@ -50,6 +49,7 @@ enum Runtime {
 	Statemint,
 	Statemine,
 	Westmint,
+	Penpal(ParaId),
 	ContractsRococo,
 }

@@ -73,6 +73,7 @@ impl ChainType
 }

 fn runtime(id: &str) -> Runtime {
+	let (_, id, para_id) = extract_parachain_id(id);
 	if id.starts_with("shell") {
 		Runtime::Shell
 	} else if id.starts_with("seedling") {
@@ -83,6 +84,8 @@ fn runtime(id: &str) -> Runtime {
 		Runtime::Statemine
 	} else if id.starts_with("westmint") {
 		Runtime::Westmint
+	} else if id.starts_with("penpal") {
+		Runtime::Penpal(para_id.unwrap_or(ParaId::new(0)))
 	} else if id.starts_with("contracts-rococo") {
 		Runtime::ContractsRococo
 	} else {
@@ -91,6 +94,7 @@ fn runtime(id: &str) -> Runtime {
 }

 fn load_spec(id: &str) -> std::result::Result<Box<dyn ChainSpec>, String> {
+	let (id, _, para_id) = extract_parachain_id(id);
 	Ok(match id {
 		"staging" => Box::new(chain_spec::staging_test_net()),
 		"tick" => Box::new(chain_spec::ChainSpec::from_json_bytes(
@@ -142,6 +146,14 @@ fn load_spec(id: &str) -> std::result::Result<Box<dyn ChainSpec>, String> {
 		)?),
 		// -- Fallback (generic chainspec)
 		"" => Box::new(chain_spec::get_chain_spec()),
+		"penpal-kusama" => Box::new(chain_spec::penpal::get_penpal_chain_spec(
+			para_id.expect("Must specify parachain id"),
+			"kusama-local",
+		)),
+		"penpal-polkadot" => Box::new(chain_spec::penpal::get_penpal_chain_spec(
+			para_id.expect("Must specify parachain id"),
+			"polkadot-local",
+		)),
 		// -- Loading a specific spec from disk
 		path => {
 			let chain_spec = chain_spec::ChainSpec::from_json_file(path.into())?;
@@ -161,12 +173,36 @@ fn load_spec(id: &str) -> std::result::Result<Box<dyn ChainSpec>, String> {
 				Runtime::ContractsRococo => Box::new(
 					chain_spec::contracts::ContractsRococoChainSpec::from_json_file(path.into())?,
 				),
+				Runtime::Penpal(_para_id) =>
+					Box::new(chain_spec::penpal::PenpalChainSpec::from_json_file(path.into())?),
 				Runtime::Generic => Box::new(chain_spec),
 			}
 		},
 	})
 }

+/// Extracts the normalized chain id and parachain id from the input chain id.
+/// (H/T to Phala for the idea)
+/// E.g. "penpal-kusama-2004" yields ("penpal-kusama", Some(2004))
+fn extract_parachain_id(id: &str) -> (&str, &str, Option<ParaId>) {
+	const KUSAMA_TEST_PARA_PREFIX: &str = "penpal-kusama-";
+	const POLKADOT_TEST_PARA_PREFIX: &str = "penpal-polkadot-";
+
+	let (norm_id, orig_id, para) = if id.starts_with(KUSAMA_TEST_PARA_PREFIX) {
+		let suffix = &id[KUSAMA_TEST_PARA_PREFIX.len()..];
+		let para_id: u32 = suffix.parse().expect("Invalid parachain-id suffix");
+		(&id[..KUSAMA_TEST_PARA_PREFIX.len() - 1], id, Some(para_id))
+	} else if id.starts_with(POLKADOT_TEST_PARA_PREFIX) {
+		let suffix = &id[POLKADOT_TEST_PARA_PREFIX.len()..];
+		let para_id: u32 = suffix.parse().expect("Invalid parachain-id suffix");
+		(&id[..POLKADOT_TEST_PARA_PREFIX.len() - 1], id, Some(para_id))
+	} else {
+		(id, id, None)
+	};
+
+	(norm_id, orig_id, para.map(Into::into))
+}
+
 impl SubstrateCli for Cli {
 	fn impl_name() -> String {
 		"Polkadot parachain".into()
@@ -210,6 +246,7 @@ impl SubstrateCli for Cli {
 			Runtime::Shell => &shell_runtime::VERSION,
 			Runtime::Seedling => &seedling_runtime::VERSION,
 			Runtime::ContractsRococo => &contracts_rococo_runtime::VERSION,
+			Runtime::Penpal(_) => &penpal_runtime::VERSION,
 			Runtime::Generic => &rococo_parachain_runtime::VERSION,
 		}
 	}
@@ -349,7 +386,7 @@ macro_rules! construct_async_run {
 					{ $( $code )* }.map(|v| (v, task_manager))
 				})
 			},
-			Runtime::Generic => {
+			Runtime::Penpal(_) | Runtime::Generic => {
 				runner.async_run(|$config| {
 					let $components = new_partial::<
 						rococo_parachain_runtime::RuntimeApi,
@@ -591,16 +628,17 @@ pub fn run() -> Result<()> {
 					.await
 					.map(|r| r.0)
 					.map_err(Into::into),
-					Runtime::Generic => crate::service::start_rococo_parachain_node(
-						config,
-						polkadot_config,
-						collator_options,
-						id,
-						hwbench,
-					)
-					.await
-					.map(|r| r.0)
-					.map_err(Into::into),
+					Runtime::Penpal(_) | Runtime::Generic =>
+						crate::service::start_rococo_parachain_node(
+							config,
+							polkadot_config,
+							collator_options,
+							id,
+							hwbench,
+						)
+						.await
+						.map(|r| r.0)
+						.map_err(Into::into),
 				}
 			})
 		},