Add Transaction Fee RPC to Statemint/Statemine (#559)

* add payment rpc to parachains * connect payment rpc to parachains clients * fix the rumtime_api bound/ add separate start node implementation for shell * use cumulus/parachain specific primitives * Update polkadot-parachains/src/rpc.rs Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com> * rename txpool dependency * fix the package name * move parachain primitives to separate module * Refactor Shared Primitves for Payment Info (#577) * rename to parachains-common * refactor shared opaque * remove primitives * Update service.rs Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com> Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
2026-05-30 04:41:03 +00:00 · 2021-08-17 09:55:56 -07:00
parent db125d2289
commit 333cfdfbba
18 changed files with 560 additions and 261 deletions
@@ -6133,6 +6133,29 @@ dependencies = [
 "serde",
 ]

+[[package]]
+name = "parachains-common"
+version = "1.0.0"
+dependencies = [
+ "frame-executive",
+ "frame-support",
+ "frame-system",
+ "node-primitives",
+ "pallet-authorship",
+ "pallet-balances",
+ "pallet-collator-selection",
+ "parity-scale-codec",
+ "polkadot-primitives",
+ "polkadot-runtime-common",
+ "serde",
+ "sp-consensus-aura",
+ "sp-core",
+ "sp-io",
+ "sp-runtime",
+ "sp-std",
+ "substrate-wasm-builder",
+]
+
 [[package]]
 name = "parity-db"
 version = "0.3.1"
@@ -6696,6 +6719,8 @@ dependencies = [
 "jsonrpc-core",
 "log",
 "nix",
+ "pallet-transaction-payment-rpc",
+ "parachains-common",
 "parity-scale-codec",
 "parking_lot 0.10.2",
 "polkadot-cli",
@@ -6717,6 +6742,7 @@ dependencies = [
 "sc-telemetry",
 "sc-tracing",
 "sc-transaction-pool",
+ "sc-transaction-pool-api",
 "serde",
 "shell-runtime",
 "sp-api",
@@ -6734,10 +6760,10 @@ dependencies = [
 "sp-timestamp",
 "sp-transaction-pool",
 "statemine-runtime",
- "statemint-common",
 "statemint-runtime",
 "structopt",
 "substrate-build-script-utils",
+ "substrate-frame-rpc-system",
 "substrate-prometheus-endpoint",
 "tempfile",
 "tokio 0.2.24",
@@ -8649,6 +8675,7 @@ dependencies = [
 "frame-executive",
 "frame-support",
 "frame-system",
+ "frame-system-rpc-runtime-api",
 "hex",
 "hex-literal 0.3.3",
 "log",
@@ -8659,6 +8686,7 @@ dependencies = [
 "pallet-sudo",
 "pallet-timestamp",
 "pallet-transaction-payment",
+ "pallet-transaction-payment-rpc-runtime-api",
 "pallet-xcm",
 "parachain-info",
 "parity-scale-codec",
@@ -11136,6 +11164,7 @@ dependencies = [
 "pallet-utility",
 "pallet-xcm",
 "parachain-info",
+ "parachains-common",
 "parity-scale-codec",
 "polkadot-parachain",
 "polkadot-runtime-common",
@@ -11153,36 +11182,12 @@ dependencies = [
 "sp-std",
 "sp-transaction-pool",
 "sp-version",
- "statemint-common",
 "substrate-wasm-builder",
 "xcm",
 "xcm-builder",
 "xcm-executor",
 ]

-[[package]]
-name = "statemint-common"
-version = "1.0.0"
-dependencies = [
- "frame-executive",
- "frame-support",
- "frame-system",
- "node-primitives",
- "pallet-authorship",
- "pallet-balances",
- "pallet-collator-selection",
- "parity-scale-codec",
- "polkadot-primitives",
- "polkadot-runtime-common",
- "serde",
- "sp-consensus-aura",
- "sp-core",
- "sp-io",
- "sp-runtime",
- "sp-std",
- "substrate-wasm-builder",
-]
-
 [[package]]
 name = "statemint-runtime"
 version = "1.0.0"
@@ -11224,6 +11229,7 @@ dependencies = [
 "pallet-utility",
 "pallet-xcm",
 "parachain-info",
+ "parachains-common",
 "parity-scale-codec",
 "polkadot-parachain",
 "polkadot-runtime-common",
@@ -11241,7 +11247,6 @@ dependencies = [
 "sp-std",
 "sp-transaction-pool",
 "sp-version",
- "statemint-common",
 "substrate-wasm-builder",
 "xcm",
 "xcm-builder",
@@ -12931,6 +12936,7 @@ dependencies = [
 "pallet-utility",
 "pallet-xcm",
 "parachain-info",
+ "parachains-common",
 "parity-scale-codec",
 "polkadot-parachain",
 "polkadot-runtime-common",
@@ -12948,7 +12954,6 @@ dependencies = [
 "sp-std",
 "sp-transaction-pool",
 "sp-version",
- "statemint-common",
 "substrate-wasm-builder",
 "xcm",
 "xcm-builder",
@@ -24,7 +24,7 @@ members = [
 	"polkadot-parachains/pallets/ping",
 	"polkadot-parachains/rococo",
 	"polkadot-parachains/shell",
-	"polkadot-parachains/statemint-common",
+	"polkadot-parachains/parachains-common",
 	"polkadot-parachains/statemint",
 	"polkadot-parachains/statemine",
 	"polkadot-parachains/westmint",
@@ -28,7 +28,7 @@ shell-runtime = { path = "shell" }
 statemint-runtime = { path = "statemint" }
 statemine-runtime = { path = "statemine" }
 westmint-runtime = { path = "westmint" }
-statemint-common = { path = "statemint-common" }
+parachains-common = { path = "parachains-common" }

 # Substrate dependencies
 frame-benchmarking = { git = 'https://github.com/paritytech/substrate', branch = "master" }
@@ -64,6 +64,9 @@ substrate-prometheus-endpoint = { git = "https://github.com/paritytech/substrate

 # RPC related dependencies
 jsonrpc-core = "15.1.0"
+sc-transaction-pool-api = { git = "https://github.com/paritytech/substrate", branch = "master" }
+frame-rpc-system = { package = "substrate-frame-rpc-system", git = "https://github.com/paritytech/substrate", branch = "master" }
+pallet-transaction-payment-rpc = { git = "https://github.com/paritytech/substrate", branch = "master" }

 # Cumulus dependencies
 cumulus-client-cli = { path = "../client/cli" }
@@ -1,9 +1,9 @@
 [package]
-name = "statemint-common"
+name = "parachains-common"
 version = "1.0.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
-description = "Logic which is common to all Statemint variant runtimes"
+description = "Logic which is common to all parachain runtimes"

 [package.metadata.docs.rs]
 targets = ['x86_64-unknown-linux-gnu']
@@ -13,12 +13,14 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.

-//! Auxillary struct/enums for Statemint runtime.
-//! Taken from polkadot/runtime/common (at a21cd64) and adapted for Statemint.
+//! Auxillary struct/enums for parachain runtimes.
+//! Taken from polkadot/runtime/common (at a21cd64) and adapted for parachains.

 use frame_support::traits::{Currency, Imbalance, OnUnbalanced};

-pub type NegativeImbalance<T> = <pallet_balances::Pallet<T> as Currency<<T as frame_system::Config>::AccountId>>::NegativeImbalance;
+pub type NegativeImbalance<T> = <pallet_balances::Pallet<T> as Currency<
+	<T as frame_system::Config>::AccountId,
+>>::NegativeImbalance;

 /// Logic for the author to get a portion of fees.
 pub struct ToStakingPot<R>(sp_std::marker::PhantomData<R>);
@@ -32,10 +34,7 @@ where
 	fn on_nonzero_unbalanced(amount: NegativeImbalance<R>) {
 		let numeric_amount = amount.peek();
 		let staking_pot = <pallet_collator_selection::Pallet<R>>::account_id();
-		<pallet_balances::Pallet<R>>::resolve_creating(
-			&staking_pot,
-			amount,
-		);
+		<pallet_balances::Pallet<R>>::resolve_creating(&staking_pot, amount);
 		<frame_system::Pallet<R>>::deposit_event(pallet_balances::Event::Deposit(
 			staking_pot,
 			numeric_amount,
@@ -64,9 +63,13 @@ where
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use frame_support::traits::FindAuthor;
-	use frame_support::{parameter_types, PalletId, traits::ValidatorRegistration};
+	use frame_support::{
+		parameter_types,
+		traits::{FindAuthor, ValidatorRegistration},
+		PalletId,
+	};
 	use frame_system::{limits, EnsureRoot};
+	use pallet_collator_selection::IdentityCollator;
 	use polkadot_primitives::v1::AccountId;
 	use sp_core::H256;
 	use sp_runtime::{
@@ -74,7 +77,6 @@ mod tests {
 		traits::{BlakeTwo256, IdentityLookup},
 		Perbill,
 	};
-	use pallet_collator_selection::IdentityCollator;

 	type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Test>;
 	type Block = frame_system::mocking::MockBlock<Test>;
@@ -16,12 +16,12 @@
 #![cfg_attr(not(feature = "std"), no_std)]

 pub mod impls;
-pub use types::*;
 pub use constants::*;
-
-/// Common types of statemint and statemine.
+pub use opaque::*;
+pub use types::*;
+/// Common types of parachains.
 mod types {
-	use sp_runtime::traits::{Verify, IdentifyAccount, BlakeTwo256};
+	use sp_runtime::traits::{IdentifyAccount, Verify};

 	/// An index to a block.
 	pub type BlockNumber = u32;
@@ -46,21 +46,18 @@ mod types {
 	/// A hash of some data used by the chain.
 	pub type Hash = sp_core::H256;

-	/// Block header type as expected by this runtime.
-	pub type Header = sp_runtime::generic::Header<BlockNumber, BlakeTwo256>;
-
 	/// Digest item type.
 	pub type DigestItem = sp_runtime::generic::DigestItem<Hash>;
-	
+
 	// Aura consensus authority.
 	pub type AuraId = sp_consensus_aura::sr25519::AuthorityId;
 }

-/// Common constants of statemint and statemine
+/// Common constants of parachains.
 mod constants {
 	use super::types::BlockNumber;
+	use frame_support::weights::{constants::WEIGHT_PER_SECOND, Weight};
 	use sp_runtime::Perbill;
-	use frame_support::weights::{Weight, constants::WEIGHT_PER_SECOND};
 	/// 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
@@ -85,3 +82,20 @@ mod constants {
 	/// We allow for 0.5 seconds of compute with a 6 second average block time.
 	pub const MAXIMUM_BLOCK_WEIGHT: Weight = WEIGHT_PER_SECOND / 2;
 }
+
+/// 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>;
+}
@@ -28,6 +28,7 @@ sp-consensus-aura = { git = "https://github.com/paritytech/substrate", default-f
 frame-support = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 frame-executive = { 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-rpc-runtime-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
 pallet-assets = { 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-randomness-collective-flip = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "master" }
@@ -35,6 +36,7 @@ pallet-timestamp = { git = "https://github.com/paritytech/substrate", default-fe
 pallet-sudo = { 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-aura = { 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" }

 # Cumulus dependencies
 cumulus-pallet-aura-ext = { path = "../../pallets/aura-ext", default-features = false }
@@ -590,6 +590,27 @@ impl_runtime_apis! {
 		}
 	}

+	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() -> cumulus_primitives_core::CollationInfo {
 			ParachainSystem::collect_collation_info()
@@ -24,7 +24,8 @@ use sp_core::{crypto::UncheckedInto, sr25519, Pair, Public};
 use sp_runtime::traits::{IdentifyAccount, Verify};

 /// Specialized `ChainSpec` for the normal parachain runtime.
-pub type ChainSpec = sc_service::GenericChainSpec<rococo_parachain_runtime::GenesisConfig, Extensions>;
+pub type ChainSpec =
+	sc_service::GenericChainSpec<rococo_parachain_runtime::GenesisConfig, Extensions>;

 /// Specialized `ChainSpec` for the shell parachain runtime.
 pub type ShellChainSpec = sc_service::GenericChainSpec<shell_runtime::GenesisConfig, Extensions>;
@@ -56,7 +57,8 @@ impl Extensions {
 type AccountPublic = <Signature as Verify>::Signer;

 /// Helper function to generate an account ID from seed
-pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId where
+pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId
+where
 	AccountPublic: From<<TPublic::Pair as Pair>::Public>,
 {
 	AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
@@ -195,12 +197,15 @@ fn shell_testnet_genesis(parachain_id: ParaId) -> shell_runtime::GenesisConfig {
 	}
 }

-use statemint_common::Balance as StatemintBalance;
+use parachains_common::Balance as StatemintBalance;

 /// Specialized `ChainSpec` for the normal parachain runtime.
-pub type StatemintChainSpec = sc_service::GenericChainSpec<statemint_runtime::GenesisConfig, Extensions>;
-pub type StatemineChainSpec = sc_service::GenericChainSpec<statemine_runtime::GenesisConfig, Extensions>;
-pub type WestmintChainSpec = sc_service::GenericChainSpec<westmint_runtime::GenesisConfig, Extensions>;
+pub type StatemintChainSpec =
+	sc_service::GenericChainSpec<statemint_runtime::GenesisConfig, Extensions>;
+pub type StatemineChainSpec =
+	sc_service::GenericChainSpec<statemine_runtime::GenesisConfig, Extensions>;
+pub type WestmintChainSpec =
+	sc_service::GenericChainSpec<westmint_runtime::GenesisConfig, Extensions>;

 const STATEMINT_ED: StatemintBalance = statemint_runtime::constants::currency::EXISTENTIAL_DEPOSIT;
 const STATEMINE_ED: StatemintBalance = statemine_runtime::constants::currency::EXISTENTIAL_DEPOSIT;
@@ -223,22 +228,22 @@ pub fn get_collator_keys_from_seed(seed: &str) -> AuraId {
 /// 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 statemint_session_keys(keys: AuraId) -> statemint_runtime::opaque::SessionKeys {
-	statemint_runtime::opaque::SessionKeys { aura: keys }
+pub fn statemint_session_keys(keys: AuraId) -> statemint_runtime::SessionKeys {
+	statemint_runtime::SessionKeys { aura: keys }
 }

 /// 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 statemine_session_keys(keys: AuraId) -> statemine_runtime::opaque::SessionKeys {
-	statemine_runtime::opaque::SessionKeys { aura: keys }
+pub fn statemine_session_keys(keys: AuraId) -> statemine_runtime::SessionKeys {
+	statemine_runtime::SessionKeys { aura: keys }
 }

 /// 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 westmint_session_keys(keys: AuraId) -> westmint_runtime::opaque::SessionKeys {
-	westmint_runtime::opaque::SessionKeys { aura: keys }
+pub fn westmint_session_keys(keys: AuraId) -> westmint_runtime::SessionKeys {
+	westmint_runtime::SessionKeys { aura: keys }
 }

 pub fn statemint_development_config(id: ParaId) -> StatemintChainSpec {
@@ -255,12 +260,10 @@ pub fn statemint_development_config(id: ParaId) -> StatemintChainSpec {
 		move || {
 			statemint_genesis(
 				// initial collators.
-				vec![
-					(
-						get_account_id_from_seed::<sr25519::Public>("Alice"),
-						get_collator_keys_from_seed("Alice"),
-					)
-				],
+				vec![(
+					get_account_id_from_seed::<sr25519::Public>("Alice"),
+					get_collator_keys_from_seed("Alice"),
+				)],
 				vec![
 					get_account_id_from_seed::<sr25519::Public>("Alice"),
 					get_account_id_from_seed::<sr25519::Public>("Bob"),
@@ -295,14 +298,15 @@ pub fn statemint_local_config(id: ParaId) -> StatemintChainSpec {
 		move || {
 			statemint_genesis(
 				// initial collators.
-				vec![(
-						 get_account_id_from_seed::<sr25519::Public>("Alice"),
-						 get_collator_keys_from_seed("Alice")
-					 ),
-					 (
-						 get_account_id_from_seed::<sr25519::Public>("Bob"),
-						 get_collator_keys_from_seed("Bob")
-					 ),
+				vec![
+					(
+						get_account_id_from_seed::<sr25519::Public>("Alice"),
+						get_collator_keys_from_seed("Alice"),
+					),
+					(
+						get_account_id_from_seed::<sr25519::Public>("Bob"),
+						get_collator_keys_from_seed("Bob"),
+					),
 				],
 				vec![
 					get_account_id_from_seed::<sr25519::Public>("Alice"),
@@ -358,11 +362,17 @@ fn statemint_genesis(
 			..Default::default()
 		},
 		session: statemint_runtime::SessionConfig {
-			keys: invulnerables.iter().cloned().map(|(acc, aura)| (
-				acc.clone(), // account id
-				acc.clone(), // validator id
-				statemint_session_keys(aura), // session keys
-			)).collect()
+			keys: invulnerables
+				.iter()
+				.cloned()
+				.map(|(acc, aura)| {
+					(
+						acc.clone(),                  // account id
+						acc.clone(),                  // validator id
+						statemint_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.
@@ -386,12 +396,10 @@ pub fn statemine_development_config(id: ParaId) -> StatemineChainSpec {
 		move || {
 			statemine_genesis(
 				// initial collators.
-				vec![
-					(
-						get_account_id_from_seed::<sr25519::Public>("Alice"),
-						get_collator_keys_from_seed("Alice"),
-					)
-				],
+				vec![(
+					get_account_id_from_seed::<sr25519::Public>("Alice"),
+					get_collator_keys_from_seed("Alice"),
+				)],
 				vec![
 					get_account_id_from_seed::<sr25519::Public>("Alice"),
 					get_account_id_from_seed::<sr25519::Public>("Bob"),
@@ -426,14 +434,15 @@ pub fn statemine_local_config(id: ParaId) -> StatemineChainSpec {
 		move || {
 			statemine_genesis(
 				// initial collators.
-				vec![(
-						 get_account_id_from_seed::<sr25519::Public>("Alice"),
-						 get_collator_keys_from_seed("Alice")
-					 ),
-					 (
-						 get_account_id_from_seed::<sr25519::Public>("Bob"),
-						 get_collator_keys_from_seed("Bob")
-					 ),
+				vec![
+					(
+						get_account_id_from_seed::<sr25519::Public>("Alice"),
+						get_collator_keys_from_seed("Alice"),
+					),
+					(
+						get_account_id_from_seed::<sr25519::Public>("Bob"),
+						get_collator_keys_from_seed("Bob"),
+					),
 				],
 				vec![
 					get_account_id_from_seed::<sr25519::Public>("Alice"),
@@ -477,22 +486,31 @@ pub fn statemine_config(id: ParaId) -> StatemineChainSpec {
 		move || {
 			statemine_genesis(
 				// initial collators.
-				vec![(
-						 hex!("50673d59020488a4ffc9d8c6de3062a65977046e6990915617f85fef6d349730").into(),
-						 hex!("50673d59020488a4ffc9d8c6de3062a65977046e6990915617f85fef6d349730").unchecked_into()
-					 ),
-					 (
-						 hex!("fe8102dbc244e7ea2babd9f53236d67403b046154370da5c3ea99def0bd0747a").into(),
-						 hex!("fe8102dbc244e7ea2babd9f53236d67403b046154370da5c3ea99def0bd0747a").unchecked_into()
-					 ),
-					 (
-						 hex!("38144b5398e5d0da5ec936a3af23f5a96e782f676ab19d45f29075ee92eca76a").into(),
-						 hex!("38144b5398e5d0da5ec936a3af23f5a96e782f676ab19d45f29075ee92eca76a").unchecked_into()
-					 ),
-					 (
-						 hex!("3253947640e309120ae70fa458dcacb915e2ddd78f930f52bd3679ec63fc4415").into(),
-						 hex!("3253947640e309120ae70fa458dcacb915e2ddd78f930f52bd3679ec63fc4415").unchecked_into()
-					 ),
+				vec![
+					(
+						hex!("50673d59020488a4ffc9d8c6de3062a65977046e6990915617f85fef6d349730")
+							.into(),
+						hex!("50673d59020488a4ffc9d8c6de3062a65977046e6990915617f85fef6d349730")
+							.unchecked_into(),
+					),
+					(
+						hex!("fe8102dbc244e7ea2babd9f53236d67403b046154370da5c3ea99def0bd0747a")
+							.into(),
+						hex!("fe8102dbc244e7ea2babd9f53236d67403b046154370da5c3ea99def0bd0747a")
+							.unchecked_into(),
+					),
+					(
+						hex!("38144b5398e5d0da5ec936a3af23f5a96e782f676ab19d45f29075ee92eca76a")
+							.into(),
+						hex!("38144b5398e5d0da5ec936a3af23f5a96e782f676ab19d45f29075ee92eca76a")
+							.unchecked_into(),
+					),
+					(
+						hex!("3253947640e309120ae70fa458dcacb915e2ddd78f930f52bd3679ec63fc4415")
+							.into(),
+						hex!("3253947640e309120ae70fa458dcacb915e2ddd78f930f52bd3679ec63fc4415")
+							.unchecked_into(),
+					),
 				],
 				vec![],
 				id,
@@ -535,11 +553,17 @@ fn statemine_genesis(
 			..Default::default()
 		},
 		session: statemine_runtime::SessionConfig {
-			keys: invulnerables.iter().cloned().map(|(acc, aura)| (
-				acc.clone(), // account id
-				acc.clone(), // validator id
-				statemine_session_keys(aura), // session keys
-			)).collect()
+			keys: invulnerables
+				.iter()
+				.cloned()
+				.map(|(acc, aura)| {
+					(
+						acc.clone(),                  // account id
+						acc.clone(),                  // validator id
+						statemine_session_keys(aura), // session keys
+					)
+				})
+				.collect(),
 		},
 		aura: Default::default(),
 		aura_ext: Default::default(),
@@ -561,12 +585,10 @@ pub fn westmint_development_config(id: ParaId) -> WestmintChainSpec {
 		move || {
 			westmint_genesis(
 				// initial collators.
-				vec![
-					(
-						get_account_id_from_seed::<sr25519::Public>("Alice"),
-						get_collator_keys_from_seed("Alice"),
-					)
-				],
+				vec![(
+					get_account_id_from_seed::<sr25519::Public>("Alice"),
+					get_collator_keys_from_seed("Alice"),
+				)],
 				vec![
 					get_account_id_from_seed::<sr25519::Public>("Alice"),
 					get_account_id_from_seed::<sr25519::Public>("Bob"),
@@ -602,14 +624,15 @@ pub fn westmint_local_config(id: ParaId) -> WestmintChainSpec {
 		move || {
 			westmint_genesis(
 				// initial collators.
-				vec![(
-						 get_account_id_from_seed::<sr25519::Public>("Alice"),
-						 get_collator_keys_from_seed("Alice")
-					 ),
-					 (
-						 get_account_id_from_seed::<sr25519::Public>("Bob"),
-						 get_collator_keys_from_seed("Bob")
-					 ),
+				vec![
+					(
+						get_account_id_from_seed::<sr25519::Public>("Alice"),
+						get_collator_keys_from_seed("Alice"),
+					),
+					(
+						get_account_id_from_seed::<sr25519::Public>("Bob"),
+						get_collator_keys_from_seed("Bob"),
+					),
 				],
 				vec![
 					get_account_id_from_seed::<sr25519::Public>("Alice"),
@@ -654,22 +677,31 @@ pub fn westmint_config(id: ParaId) -> WestmintChainSpec {
 		move || {
 			westmint_genesis(
 				// initial collators.
-				vec![(
-						 hex!("9cfd429fa002114f33c1d3e211501d62830c9868228eb3b4b8ae15a83de04325").into(),
-						 hex!("9cfd429fa002114f33c1d3e211501d62830c9868228eb3b4b8ae15a83de04325").unchecked_into()
-					 ),
-					 (
-						 hex!("12a03fb4e7bda6c9a07ec0a11d03c24746943e054ff0bb04938970104c783876").into(),
-						 hex!("12a03fb4e7bda6c9a07ec0a11d03c24746943e054ff0bb04938970104c783876").unchecked_into()
-					 ),
-					 (
-						 hex!("1256436307dfde969324e95b8c62cb9101f520a39435e6af0f7ac07b34e1931f").into(),
-						 hex!("1256436307dfde969324e95b8c62cb9101f520a39435e6af0f7ac07b34e1931f").unchecked_into()
-					 ),
-					 (
-						 hex!("98102b7bca3f070f9aa19f58feed2c0a4e107d203396028ec17a47e1ed80e322").into(),
-						 hex!("98102b7bca3f070f9aa19f58feed2c0a4e107d203396028ec17a47e1ed80e322").unchecked_into()
-					 ),
+				vec![
+					(
+						hex!("9cfd429fa002114f33c1d3e211501d62830c9868228eb3b4b8ae15a83de04325")
+							.into(),
+						hex!("9cfd429fa002114f33c1d3e211501d62830c9868228eb3b4b8ae15a83de04325")
+							.unchecked_into(),
+					),
+					(
+						hex!("12a03fb4e7bda6c9a07ec0a11d03c24746943e054ff0bb04938970104c783876")
+							.into(),
+						hex!("12a03fb4e7bda6c9a07ec0a11d03c24746943e054ff0bb04938970104c783876")
+							.unchecked_into(),
+					),
+					(
+						hex!("1256436307dfde969324e95b8c62cb9101f520a39435e6af0f7ac07b34e1931f")
+							.into(),
+						hex!("1256436307dfde969324e95b8c62cb9101f520a39435e6af0f7ac07b34e1931f")
+							.unchecked_into(),
+					),
+					(
+						hex!("98102b7bca3f070f9aa19f58feed2c0a4e107d203396028ec17a47e1ed80e322")
+							.into(),
+						hex!("98102b7bca3f070f9aa19f58feed2c0a4e107d203396028ec17a47e1ed80e322")
+							.unchecked_into(),
+					),
 				],
 				vec![],
 				// re-use the Westend sudo key
@@ -716,11 +748,17 @@ fn westmint_genesis(
 			..Default::default()
 		},
 		session: westmint_runtime::SessionConfig {
-			keys: invulnerables.iter().cloned().map(|(acc, aura)| (
-				acc.clone(), // account id
-				acc.clone(), // validator id
-				westmint_session_keys(aura), // session keys
-			)).collect()
+			keys: invulnerables
+				.iter()
+				.cloned()
+				.map(|(acc, aura)| {
+					(
+						acc.clone(),                 // account id
+						acc.clone(),                 // validator id
+						westmint_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.
@@ -24,6 +24,7 @@ mod chain_spec;
 mod service;
 mod cli;
 mod command;
+mod rpc;

 fn main() -> sc_cli::Result<()> {
 	command::run()
@@ -0,0 +1,80 @@
+// Copyright 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/>.
+
+//! Parachain-specific RPCs implementation.
+
+#![warn(missing_docs)]
+
+use std::sync::Arc;
+
+use sc_client_api::AuxStore;
+pub use sc_rpc::{DenyUnsafe, SubscriptionTaskExecutor};
+use sc_transaction_pool_api::TransactionPool;
+use sp_api::ProvideRuntimeApi;
+use sp_block_builder::BlockBuilder;
+use sp_blockchain::{Error as BlockChainError, HeaderBackend, HeaderMetadata};
+
+use parachains_common::{AccountId, Balance, Block, Index as Nonce};
+
+/// A type representing all RPC extensions.
+pub type RpcExtension = jsonrpc_core::IoHandler<sc_rpc::Metadata>;
+
+/// Full client dependencies
+pub struct FullDeps<C, P> {
+	/// The client instance to use.
+	pub client: Arc<C>,
+	/// Transaction pool instance.
+	pub pool: Arc<P>,
+	/// Whether to deny unsafe calls
+	pub deny_unsafe: DenyUnsafe,
+}
+
+/// Instantiate all RPC extensions.
+pub fn create_full<C, P>(deps: FullDeps<C, P>) -> RpcExtension
+where
+	C: ProvideRuntimeApi<Block>
+		+ HeaderBackend<Block>
+		+ AuxStore
+		+ HeaderMetadata<Block, Error = BlockChainError>
+		+ Send
+		+ Sync
+		+ 'static,
+	C::Api: frame_rpc_system::AccountNonceApi<Block, AccountId, Nonce>,
+	C::Api: pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>,
+	C::Api: BlockBuilder<Block>,
+	P: TransactionPool + Sync + Send + 'static,
+{
+	use frame_rpc_system::{FullSystem, SystemApi};
+	use pallet_transaction_payment_rpc::{TransactionPayment, TransactionPaymentApi};
+
+	let mut io = jsonrpc_core::IoHandler::default();
+	let FullDeps {
+		client,
+		pool,
+		deny_unsafe,
+	} = deps;
+
+	io.extend_with(SystemApi::to_delegate(FullSystem::new(
+		client.clone(),
+		pool,
+		deny_unsafe,
+	)));
+	io.extend_with(TransactionPaymentApi::to_delegate(TransactionPayment::new(
+		client.clone(),
+	)));
+
+	io
+}
@@ -13,7 +13,6 @@

 // You should have received a copy of the GNU General Public License
 // along with Cumulus.  If not, see <http://www.gnu.org/licenses/>.
-
 use cumulus_client_consensus_aura::{
 	build_aura_consensus, BuildAuraConsensusParams, SlotProportion,
 };
@@ -29,6 +28,9 @@ use cumulus_primitives_core::{
 	ParaId,
 };

+use crate::rpc;
+pub use parachains_common::{AccountId, Balance, Block, Hash, Header, Index as Nonce};
+
 use cumulus_client_consensus_relay_chain::Verifier as RelayChainVerifier;
 use futures::lock::Mutex;
 use sc_client_api::ExecutorProvider;
@@ -37,6 +39,7 @@ use sc_consensus::{
 	BlockImportParams,
 };
 use sc_executor::native_executor_instance;
+pub use sc_executor::NativeExecutor;
 use sc_network::NetworkService;
 use sc_service::{Configuration, PartialComponents, Role, TFullBackend, TFullClient, TaskManager};
 use sc_telemetry::{Telemetry, TelemetryHandle, TelemetryWorker, TelemetryWorkerHandle};
@@ -51,13 +54,6 @@ use sp_runtime::{
 use std::sync::Arc;
 use substrate_prometheus_endpoint::Registry;

-pub use sc_executor::NativeExecutor;
-
-type BlockNumber = u32;
-type Header = sp_runtime::generic::Header<BlockNumber, sp_runtime::traits::BlakeTwo256>;
-pub type Block = sp_runtime::generic::Block<Header, sp_runtime::OpaqueExtrinsic>;
-type Hash = sp_core::H256;
-
 // Native executor instance.
 native_executor_instance!(
 	pub RococoParachainRuntimeExecutor,
@@ -193,11 +189,11 @@ where
 	Ok(params)
 }

-/// Start a node with the given parachain `Configuration` and relay chain `Configuration`.
+/// Start a shell node with the given parachain `Configuration` and relay chain `Configuration`.
 ///
-/// This is the actual implementation that is abstract over the executor and the runtime api.
+/// This is the actual implementation that is abstract over the executor and the runtime api for shell nodes.
 #[sc_tracing::logging::prefix_logs_with("Parachain")]
-async fn start_node_impl<RuntimeApi, Executor, RB, BIQ, BIC>(
+async fn start_shell_node_impl<RuntimeApi, Executor, RB, BIQ, BIC>(
 	parachain_config: Configuration,
 	polkadot_config: Configuration,
 	id: ParaId,
@@ -358,6 +354,185 @@ where
 	Ok((task_manager, client))
 }

+/// Start a node with the given parachain `Configuration` and relay chain `Configuration`.
+///
+/// This is the actual implementation that is abstract over the executor and the runtime api.
+#[sc_tracing::logging::prefix_logs_with("Parachain")]
+async fn start_node_impl<RuntimeApi, Executor, RB, BIQ, BIC>(
+	parachain_config: Configuration,
+	polkadot_config: Configuration,
+	id: ParaId,
+	_rpc_ext_builder: RB,
+	build_import_queue: BIQ,
+	build_consensus: BIC,
+) -> sc_service::error::Result<(TaskManager, Arc<TFullClient<Block, RuntimeApi, Executor>>)>
+where
+	RuntimeApi: ConstructRuntimeApi<Block, TFullClient<Block, RuntimeApi, Executor>>
+		+ Send
+		+ Sync
+		+ 'static,
+	RuntimeApi::RuntimeApi: sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block>
+		+ sp_api::Metadata<Block>
+		+ sp_session::SessionKeys<Block>
+		+ sp_api::ApiExt<
+			Block,
+			StateBackend = sc_client_api::StateBackendFor<TFullBackend<Block>, Block>,
+		> + sp_offchain::OffchainWorkerApi<Block>
+		+ sp_block_builder::BlockBuilder<Block>
+		+ cumulus_primitives_core::CollectCollationInfo<Block>
+		+ pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>
+		+ frame_rpc_system::AccountNonceApi<Block, AccountId, Nonce>,
+	sc_client_api::StateBackendFor<TFullBackend<Block>, Block>: sp_api::StateBackend<BlakeTwo256>,
+	Executor: sc_executor::NativeExecutionDispatch + 'static,
+	RB: Fn(
+			Arc<TFullClient<Block, RuntimeApi, Executor>>,
+		) -> Result<jsonrpc_core::IoHandler<sc_rpc::Metadata>, sc_service::Error>
+		+ Send
+		+ 'static,
+	BIQ: FnOnce(
+			Arc<TFullClient<Block, RuntimeApi, Executor>>,
+			&Configuration,
+			Option<TelemetryHandle>,
+			&TaskManager,
+		) -> Result<
+			sc_consensus::DefaultImportQueue<Block, TFullClient<Block, RuntimeApi, Executor>>,
+			sc_service::Error,
+		> + 'static,
+	BIC: FnOnce(
+		Arc<TFullClient<Block, RuntimeApi, Executor>>,
+		Option<&Registry>,
+		Option<TelemetryHandle>,
+		&TaskManager,
+		&polkadot_service::NewFull<polkadot_service::Client>,
+		Arc<sc_transaction_pool::FullPool<Block, TFullClient<Block, RuntimeApi, Executor>>>,
+		Arc<NetworkService<Block, Hash>>,
+		SyncCryptoStorePtr,
+		bool,
+	) -> Result<Box<dyn ParachainConsensus<Block>>, sc_service::Error>,
+{
+	if matches!(parachain_config.role, Role::Light) {
+		return Err("Light client not supported!".into());
+	}
+
+	let parachain_config = prepare_node_config(parachain_config);
+
+	let params = new_partial::<RuntimeApi, Executor, BIQ>(&parachain_config, build_import_queue)?;
+	let (mut telemetry, telemetry_worker_handle) = params.other;
+
+	let relay_chain_full_node =
+		cumulus_client_service::build_polkadot_full_node(polkadot_config, telemetry_worker_handle)
+			.map_err(|e| match e {
+				polkadot_service::Error::Sub(x) => x,
+				s => format!("{}", s).into(),
+			})?;
+
+	let client = params.client.clone();
+	let backend = params.backend.clone();
+	let block_announce_validator = build_block_announce_validator(
+		relay_chain_full_node.client.clone(),
+		id,
+		Box::new(relay_chain_full_node.network.clone()),
+		relay_chain_full_node.backend.clone(),
+	);
+
+	let force_authoring = parachain_config.force_authoring;
+	let validator = parachain_config.role.is_authority();
+	let prometheus_registry = parachain_config.prometheus_registry().cloned();
+	let transaction_pool = params.transaction_pool.clone();
+	let mut task_manager = params.task_manager;
+	let import_queue = cumulus_client_service::SharedImportQueue::new(params.import_queue);
+	let (network, system_rpc_tx, start_network) =
+		sc_service::build_network(sc_service::BuildNetworkParams {
+			config: &parachain_config,
+			client: client.clone(),
+			transaction_pool: transaction_pool.clone(),
+			spawn_handle: task_manager.spawn_handle(),
+			import_queue: import_queue.clone(),
+			on_demand: None,
+			block_announce_validator_builder: Some(Box::new(|_| block_announce_validator)),
+			warp_sync: None,
+		})?;
+
+	let rpc_extensions_builder = {
+		let client = client.clone();
+		let transaction_pool = transaction_pool.clone();
+
+		Box::new(move |deny_unsafe, _| {
+			let deps = rpc::FullDeps {
+				client: client.clone(),
+				pool: transaction_pool.clone(),
+				deny_unsafe,
+			};
+
+			Ok(rpc::create_full(deps))
+		})
+	};
+
+	sc_service::spawn_tasks(sc_service::SpawnTasksParams {
+		on_demand: None,
+		remote_blockchain: None,
+		rpc_extensions_builder,
+		client: client.clone(),
+		transaction_pool: transaction_pool.clone(),
+		task_manager: &mut task_manager,
+		config: parachain_config,
+		keystore: params.keystore_container.sync_keystore(),
+		backend: backend.clone(),
+		network: network.clone(),
+		system_rpc_tx,
+		telemetry: telemetry.as_mut(),
+	})?;
+
+	let announce_block = {
+		let network = network.clone();
+		Arc::new(move |hash, data| network.announce_block(hash, data))
+	};
+
+	if validator {
+		let parachain_consensus = build_consensus(
+			client.clone(),
+			prometheus_registry.as_ref(),
+			telemetry.as_ref().map(|t| t.handle()),
+			&task_manager,
+			&relay_chain_full_node,
+			transaction_pool,
+			network,
+			params.keystore_container.sync_keystore(),
+			force_authoring,
+		)?;
+
+		let spawner = task_manager.spawn_handle();
+
+		let params = StartCollatorParams {
+			para_id: id,
+			block_status: client.clone(),
+			announce_block,
+			client: client.clone(),
+			task_manager: &mut task_manager,
+			relay_chain_full_node,
+			spawner,
+			parachain_consensus,
+			import_queue,
+		};
+
+		start_collator(params).await?;
+	} else {
+		let params = StartFullNodeParams {
+			client: client.clone(),
+			announce_block,
+			task_manager: &mut task_manager,
+			para_id: id,
+			relay_chain_full_node,
+		};
+
+		start_full_node(params)?;
+	}
+
+	start_network.start_network();
+
+	Ok((task_manager, client))
+}
+
 /// Build the import queue for the rococo parachain runtime.
 pub fn rococo_parachain_build_import_queue(
 	client: Arc<
@@ -532,7 +707,7 @@ pub async fn start_shell_node(
 	TaskManager,
 	Arc<TFullClient<Block, shell_runtime::RuntimeApi, ShellRuntimeExecutor>>,
 )> {
-	start_node_impl::<shell_runtime::RuntimeApi, ShellRuntimeExecutor, _, _, _>(
+	start_shell_node_impl::<shell_runtime::RuntimeApi, ShellRuntimeExecutor, _, _, _>(
 		parachain_config,
 		polkadot_config,
 		id,
@@ -801,7 +976,9 @@ where
 		> + sp_offchain::OffchainWorkerApi<Block>
 		+ sp_block_builder::BlockBuilder<Block>
 		+ cumulus_primitives_core::CollectCollationInfo<Block>
-		+ sp_consensus_aura::AuraApi<Block, AuraId>,
+		+ sp_consensus_aura::AuraApi<Block, AuraId>
+		+ pallet_transaction_payment_rpc::TransactionPaymentRuntimeApi<Block, Balance>
+		+ frame_rpc_system::AccountNonceApi<Block, AccountId, Nonce>,
 	sc_client_api::StateBackendFor<TFullBackend<Block>, Block>: sp_api::StateBackend<BlakeTwo256>,
 	Executor: sc_executor::NativeExecutionDispatch + 'static,
 {
@@ -62,7 +62,7 @@ cumulus-pallet-xcm = { path = "../../pallets/xcm", default-features = false }
 cumulus-pallet-session-benchmarking = {path = "../../pallets/session-benchmarking", default-features = false, version = "3.0.0"}
 cumulus-ping = { path = "../pallets/ping", default-features = false }
 pallet-collator-selection = { path = "../../pallets/collator-selection", default-features = false }
-statemint-common = { path = "../statemint-common", default-features = false }
+parachains-common = { path = "../parachains-common", default-features = false }

 # Polkadot dependencies
 polkadot-parachain = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
@@ -149,5 +149,5 @@ std = [
 	"xcm-executor/std",
 	"sp-consensus-aura/std",
 	"node-primitives/std",
-	"statemint-common/std",
+	"parachains-common/std",
 ]
@@ -54,12 +54,13 @@ use frame_system::{
 	limits::{BlockLength, BlockWeights},
 	EnsureOneOf, EnsureRoot,
 };
-use sp_runtime::Perbill;
-pub use statemint_common as common;
-use statemint_common::{
-	impls::DealWithFees, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index, Signature,
-	AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO, SLOT_DURATION,
+pub use parachains_common as common;
+use parachains_common::{
+	impls::DealWithFees, opaque, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index,
+	Signature, AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO,
+	SLOT_DURATION,
 };
+use sp_runtime::Perbill;

 #[cfg(any(feature = "std", test))]
 pub use sp_runtime::BuildStorage;
@@ -78,23 +79,9 @@ use xcm_builder::{
 };
 use xcm_executor::{Config, XcmExecutor};

-/// 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::*;
-	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,
-		}
+impl_opaque_keys! {
+	pub struct SessionKeys {
+		pub aura: Aura,
 	}
 }

@@ -619,9 +606,8 @@ impl pallet_session::Config for Runtime {
 	type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
 	type SessionManager = CollatorSelection;
 	// Essentially just Aura, but lets be pedantic.
-	type SessionHandler =
-		<opaque::SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
-	type Keys = opaque::SessionKeys;
+	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
+	type Keys = SessionKeys;
 	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
 }
@@ -817,13 +803,13 @@ impl_runtime_apis! {

 	impl sp_session::SessionKeys<Block> for Runtime {
 		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
-			opaque::SessionKeys::generate(seed)
+			SessionKeys::generate(seed)
 		}

 		fn decode_session_keys(
 			encoded: Vec<u8>,
 		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
-			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
+			SessionKeys::decode_into_raw_public_keys(&encoded)
 		}
 	}

@@ -62,7 +62,7 @@ cumulus-pallet-xcm = { path = "../../pallets/xcm", default-features = false }
 cumulus-pallet-session-benchmarking = { path = "../../pallets/session-benchmarking", default-features = false, version = "3.0.0" }
 cumulus-ping = { path = "../pallets/ping", default-features = false }
 pallet-collator-selection = { path = "../../pallets/collator-selection", default-features = false }
-statemint-common = { path = "../statemint-common", default-features = false }
+parachains-common = { path = "../parachains-common", default-features = false }

 # Polkadot dependencies
 polkadot-parachain = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
@@ -149,5 +149,5 @@ std = [
 	"xcm-executor/std",
 	"sp-consensus-aura/std",
 	"node-primitives/std",
-	"statemint-common/std",
+	"parachains-common/std",
 ]
@@ -54,12 +54,13 @@ use frame_system::{
 	limits::{BlockLength, BlockWeights},
 	EnsureOneOf, EnsureRoot,
 };
-use sp_runtime::Perbill;
-pub use statemint_common as common;
-use statemint_common::{
-	impls::DealWithFees, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index, Signature,
-	AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO, SLOT_DURATION,
+pub use parachains_common as common;
+use parachains_common::{
+	impls::DealWithFees, opaque, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index,
+	Signature, AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO,
+	SLOT_DURATION,
 };
+use sp_runtime::Perbill;

 #[cfg(any(feature = "std", test))]
 pub use sp_runtime::BuildStorage;
@@ -78,23 +79,9 @@ use xcm_builder::{
 };
 use xcm_executor::{Config, XcmExecutor};

-/// 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::*;
-	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,
-		}
+impl_opaque_keys! {
+	pub struct SessionKeys {
+		pub aura: Aura,
 	}
 }

@@ -327,10 +314,9 @@ impl InstanceFilter<Call> for ProxyType {
 	fn filter(&self, c: &Call) -> bool {
 		match self {
 			ProxyType::Any => true,
-			ProxyType::NonTransfer => !matches!(
-				c,
-				Call::Balances(..) | Call::Assets(..) | Call::Uniques(..)
-			),
+			ProxyType::NonTransfer => {
+				!matches!(c, Call::Balances(..) | Call::Assets(..) | Call::Uniques(..))
+			}
 			ProxyType::CancelProxy => matches!(
 				c,
 				Call::Proxy(pallet_proxy::Call::reject_announcement(..))
@@ -585,9 +571,8 @@ impl pallet_session::Config for Runtime {
 	type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
 	type SessionManager = CollatorSelection;
 	// Essentially just Aura, but lets be pedantic.
-	type SessionHandler =
-		<opaque::SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
-	type Keys = opaque::SessionKeys;
+	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
+	type Keys = SessionKeys;
 	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
 }
@@ -801,13 +786,13 @@ impl_runtime_apis! {

 	impl sp_session::SessionKeys<Block> for Runtime {
 		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
-			opaque::SessionKeys::generate(seed)
+			SessionKeys::generate(seed)
 		}

 		fn decode_session_keys(
 			encoded: Vec<u8>,
 		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
-			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
+			SessionKeys::decode_into_raw_public_keys(&encoded)
 		}
 	}

@@ -62,7 +62,7 @@ cumulus-pallet-xcm = { path = "../../pallets/xcm", default-features = false }
 cumulus-pallet-session-benchmarking = {path = "../../pallets/session-benchmarking", default-features = false, version = "3.0.0"}
 cumulus-ping = { path = "../pallets/ping", default-features = false }
 pallet-collator-selection = { path = "../../pallets/collator-selection", default-features = false }
-statemint-common = { path = "../statemint-common", default-features = false }
+parachains-common = { path = "../parachains-common", default-features = false }

 # Polkadot dependencies
 polkadot-parachain = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
@@ -149,5 +149,5 @@ std = [
 	"xcm-executor/std",
 	"sp-consensus-aura/std",
 	"node-primitives/std",
-	"statemint-common/std",
+	"parachains-common/std",
 ]
@@ -54,12 +54,13 @@ use frame_system::{
 	limits::{BlockLength, BlockWeights},
 	EnsureRoot,
 };
-use sp_runtime::Perbill;
-pub use statemint_common as common;
-use statemint_common::{
-	impls::DealWithFees, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index, Signature,
-	AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO, SLOT_DURATION,
+pub use parachains_common as common;
+use parachains_common::{
+	impls::DealWithFees, opaque, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index,
+	Signature, AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO,
+	SLOT_DURATION,
 };
+use sp_runtime::Perbill;

 #[cfg(any(feature = "std", test))]
 pub use sp_runtime::BuildStorage;
@@ -78,23 +79,9 @@ use xcm_builder::{
 };
 use xcm_executor::{Config, XcmExecutor};

-/// 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::*;
-	pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;
-
-	/// Opaque block type.
-	pub type Block = generic::Block<Header, UncheckedExtrinsic>;
-
-	pub type SessionHandlers = ();
-
-	impl_opaque_keys! {
-		pub struct SessionKeys {
-			pub aura: Aura,
-		}
+impl_opaque_keys! {
+	pub struct SessionKeys {
+		pub aura: Aura,
 	}
 }

@@ -233,7 +220,7 @@ impl pallet_sudo::Config for Runtime {
 	type Call = Call;
 }

-pub type AssetsForceOrigin =  EnsureRoot<AccountId>;
+pub type AssetsForceOrigin = EnsureRoot<AccountId>;

 parameter_types! {
 	pub const AssetDeposit: Balance = 100 * UNITS; // 100 WND deposit to create asset
@@ -326,10 +313,9 @@ impl InstanceFilter<Call> for ProxyType {
 	fn filter(&self, c: &Call) -> bool {
 		match self {
 			ProxyType::Any => true,
-			ProxyType::NonTransfer => !matches!(
-				c,
-				Call::Balances(..) | Call::Assets(..) | Call::Uniques(..)
-			),
+			ProxyType::NonTransfer => {
+				!matches!(c, Call::Balances(..) | Call::Assets(..) | Call::Uniques(..))
+			}
 			ProxyType::CancelProxy => matches!(
 				c,
 				Call::Proxy(pallet_proxy::Call::reject_announcement(..))
@@ -583,9 +569,8 @@ impl pallet_session::Config for Runtime {
 	type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
 	type SessionManager = CollatorSelection;
 	// Essentially just Aura, but lets be pedantic.
-	type SessionHandler =
-		<opaque::SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
-	type Keys = opaque::SessionKeys;
+	type SessionHandler = <SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
+	type Keys = SessionKeys;
 	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
 }
@@ -803,13 +788,13 @@ impl_runtime_apis! {

 	impl sp_session::SessionKeys<Block> for Runtime {
 		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
-			opaque::SessionKeys::generate(seed)
+			SessionKeys::generate(seed)
 		}

 		fn decode_session_keys(
 			encoded: Vec<u8>,
 		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
-			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
+			SessionKeys::decode_into_raw_public_keys(&encoded)
 		}
 	}