[parachain-template] pallet configurations into mod configs (#3809)

This PR introduces a refactor of the parachain runtime configuration by
consolidating all pallet configurations into a new module named
`configs`. This change aims to improve the readability and
maintainability of the runtime configuration by centralizing all
configuration parameters.

## Changes
- **Creation of `configs.rs`**: A new file `configs.rs` has been added
under `templates/parachain/runtime/src/`, containing all the runtime
configurations previously scattered across `lib.rs`.
- **Refactoring of `lib.rs`**: The `lib.rs` file has been significantly
slimmed down by removing the inline pallet configurations and importing
them from `configs.rs` instead.
- **Optimization of Import Statements**: Reorganized import statements
to clarify the runtime's dependency structure.

### Benefits
- **Improved Readability**: With configurations being centralized,
developers can now easily locate and review runtime parameters without
navigating through the `lib.rs` file.

This refactor does not introduce any changes to the runtime logic but
improves the project structure for better development experience.

---------

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

templates/parachain/runtime/src/apis.rs

@@ -193,7 +193,7 @@ impl_runtime_apis! {
 	#[cfg(feature = "try-runtime")]
 	impl frame_try_runtime::TryRuntime<Block> for Runtime {
 		fn on_runtime_upgrade(checks: frame_try_runtime::UpgradeCheckSelect) -> (Weight, Weight) {
-			use super::RuntimeBlockWeights;
+			use super::configs::RuntimeBlockWeights;
 
 			let weight = Executive::try_runtime_upgrade(checks).unwrap();
 			(weight, RuntimeBlockWeights::get().max_block)

templates/parachain/runtime/src/configs/mod.rs

@@ -0,0 +1,311 @@
+// This is free and unencumbered software released into the public domain.
+//
+// Anyone is free to copy, modify, publish, use, compile, sell, or
+// distribute this software, either in source code form or as a compiled
+// binary, for any purpose, commercial or non-commercial, and by any
+// means.
+//
+// In jurisdictions that recognize copyright laws, the author or authors
+// of this software dedicate any and all copyright interest in the
+// software to the public domain. We make this dedication for the benefit
+// of the public at large and to the detriment of our heirs and
+// successors. We intend this dedication to be an overt act of
+// relinquishment in perpetuity of all present and future rights to this
+// software under copyright law.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+//
+// For more information, please refer to <http://unlicense.org>
+
+mod xcm_config;
+
+// Substrate and Polkadot dependencies
+use cumulus_pallet_parachain_system::RelayNumberStrictlyIncreases;
+use cumulus_primitives_core::{AggregateMessageOrigin, ParaId};
+use frame_support::{
+	derive_impl,
+	dispatch::DispatchClass,
+	parameter_types,
+	traits::{ConstBool, ConstU32, ConstU64, ConstU8, EitherOfDiverse, TransformOrigin},
+	weights::{ConstantMultiplier, Weight},
+	PalletId,
+};
+use frame_system::{
+	limits::{BlockLength, BlockWeights},
+	EnsureRoot,
+};
+use pallet_xcm::{EnsureXcm, IsVoiceOfBody};
+use parachains_common::message_queue::{NarrowOriginToSibling, ParaIdToSibling};
+use polkadot_runtime_common::{
+	xcm_sender::NoPriceForMessageDelivery, BlockHashCount, SlowAdjustingFeeUpdate,
+};
+use sp_consensus_aura::sr25519::AuthorityId as AuraId;
+use sp_runtime::Perbill;
+use sp_version::RuntimeVersion;
+use xcm::latest::prelude::BodyId;
+
+// Local module imports
+use super::{
+	weights::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight},
+	AccountId, Aura, Balance, Balances, Block, BlockNumber, CollatorSelection, Hash, MessageQueue,
+	Nonce, PalletInfo, ParachainSystem, Runtime, RuntimeCall, RuntimeEvent, RuntimeFreezeReason,
+	RuntimeHoldReason, RuntimeOrigin, RuntimeTask, Session, SessionKeys, System, WeightToFee,
+	XcmpQueue, AVERAGE_ON_INITIALIZE_RATIO, BLOCK_PROCESSING_VELOCITY, EXISTENTIAL_DEPOSIT, HOURS,
+	MAXIMUM_BLOCK_WEIGHT, MICROUNIT, NORMAL_DISPATCH_RATIO, RELAY_CHAIN_SLOT_DURATION_MILLIS,
+	SLOT_DURATION, UNINCLUDED_SEGMENT_CAPACITY, VERSION,
+};
+use xcm_config::{RelayLocation, XcmOriginToTransactDispatchOrigin};
+
+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;
+}
+
+/// The default types are being injected by [`derive_impl`](`frame_support::derive_impl`) from
+/// [`ParaChainDefaultConfig`](`struct@frame_system::config_preludes::ParaChainDefaultConfig`),
+/// but overridden as needed.
+#[derive_impl(frame_system::config_preludes::ParaChainDefaultConfig)]
+impl frame_system::Config for Runtime {
+	/// The identifier used to distinguish between accounts.
+	type AccountId = AccountId;
+	/// The index type for storing how many extrinsics an account has signed.
+	type Nonce = Nonce;
+	/// The type for hashing blocks and tries.
+	type Hash = Hash;
+	/// The block type.
+	type Block = Block;
+	/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
+	type BlockHashCount = BlockHashCount;
+	/// Runtime version.
+	type Version = Version;
+	/// The data to be stored in an account.
+	type AccountData = pallet_balances::AccountData<Balance>;
+	/// The weight of database operations that the runtime can invoke.
+	type DbWeight = RocksDbWeight;
+	/// 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>;
+}
+
+impl pallet_timestamp::Config for Runtime {
+	/// A timestamp: milliseconds since the unix epoch.
+	type Moment = u64;
+	type OnTimestampSet = Aura;
+	type MinimumPeriod = ConstU64<{ SLOT_DURATION / 2 }>;
+	type WeightInfo = ();
+}
+
+impl pallet_authorship::Config for Runtime {
+	type FindAuthor = pallet_session::FindAccountFromAuthorIndex<Self, Aura>;
+	type EventHandler = (CollatorSelection,);
+}
+
+parameter_types! {
+	pub const ExistentialDeposit: Balance = EXISTENTIAL_DEPOSIT;
+}
+
+impl pallet_balances::Config for Runtime {
+	type MaxLocks = ConstU32<50>;
+	/// The type for recording an account's balance.
+	type Balance = Balance;
+	/// The ubiquitous event type.
+	type RuntimeEvent = RuntimeEvent;
+	type DustRemoval = ();
+	type ExistentialDeposit = ExistentialDeposit;
+	type AccountStore = System;
+	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
+	type MaxReserves = ConstU32<50>;
+	type ReserveIdentifier = [u8; 8];
+	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
+	type FreezeIdentifier = ();
+	type MaxFreezes = ConstU32<0>;
+}
+
+parameter_types! {
+	/// Relay Chain `TransactionByteFee` / 10
+	pub const TransactionByteFee: Balance = 10 * MICROUNIT;
+}
+
+impl pallet_transaction_payment::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	type OnChargeTransaction = pallet_transaction_payment::CurrencyAdapter<Balances, ()>;
+	type WeightToFee = WeightToFee;
+	type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
+	type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;
+	type OperationalFeeMultiplier = ConstU8<5>;
+}
+
+impl pallet_sudo::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	type RuntimeCall = RuntimeCall;
+	type WeightInfo = ();
+}
+
+parameter_types! {
+	pub const ReservedXcmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT.saturating_div(4);
+	pub const ReservedDmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT.saturating_div(4);
+	pub const RelayOrigin: AggregateMessageOrigin = AggregateMessageOrigin::Parent;
+}
+
+impl cumulus_pallet_parachain_system::Config for Runtime {
+	type WeightInfo = ();
+	type RuntimeEvent = RuntimeEvent;
+	type OnSystemEvent = ();
+	type SelfParaId = parachain_info::Pallet<Runtime>;
+	type OutboundXcmpMessageSource = XcmpQueue;
+	type DmpQueue = frame_support::traits::EnqueueWithOrigin<MessageQueue, RelayOrigin>;
+	type ReservedDmpWeight = ReservedDmpWeight;
+	type XcmpMessageHandler = XcmpQueue;
+	type ReservedXcmpWeight = ReservedXcmpWeight;
+	type CheckAssociatedRelayNumber = RelayNumberStrictlyIncreases;
+	type ConsensusHook = cumulus_pallet_aura_ext::FixedVelocityConsensusHook<
+		Runtime,
+		RELAY_CHAIN_SLOT_DURATION_MILLIS,
+		BLOCK_PROCESSING_VELOCITY,
+		UNINCLUDED_SEGMENT_CAPACITY,
+	>;
+}
+
+impl parachain_info::Config for Runtime {}
+
+parameter_types! {
+	pub MessageQueueServiceWeight: Weight = Perbill::from_percent(35) * RuntimeBlockWeights::get().max_block;
+}
+
+impl pallet_message_queue::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	type WeightInfo = ();
+	#[cfg(feature = "runtime-benchmarks")]
+	type MessageProcessor = pallet_message_queue::mock_helpers::NoopMessageProcessor<
+		cumulus_primitives_core::AggregateMessageOrigin,
+	>;
+	#[cfg(not(feature = "runtime-benchmarks"))]
+	type MessageProcessor = xcm_builder::ProcessXcmMessage<
+		AggregateMessageOrigin,
+		xcm_executor::XcmExecutor<xcm_config::XcmConfig>,
+		RuntimeCall,
+	>;
+	type Size = u32;
+	// The XCMP queue pallet is only ever able to handle the `Sibling(ParaId)` origin:
+	type QueueChangeHandler = NarrowOriginToSibling<XcmpQueue>;
+	type QueuePausedQuery = NarrowOriginToSibling<XcmpQueue>;
+	type HeapSize = sp_core::ConstU32<{ 64 * 1024 }>;
+	type MaxStale = sp_core::ConstU32<8>;
+	type ServiceWeight = MessageQueueServiceWeight;
+	type IdleMaxServiceWeight = ();
+}
+
+impl cumulus_pallet_aura_ext::Config for Runtime {}
+
+impl cumulus_pallet_xcmp_queue::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	type ChannelInfo = ParachainSystem;
+	type VersionWrapper = ();
+	// Enqueue XCMP messages from siblings for later processing.
+	type XcmpQueue = TransformOrigin<MessageQueue, AggregateMessageOrigin, ParaId, ParaIdToSibling>;
+	type MaxInboundSuspended = sp_core::ConstU32<1_000>;
+	type ControllerOrigin = EnsureRoot<AccountId>;
+	type ControllerOriginConverter = XcmOriginToTransactDispatchOrigin;
+	type WeightInfo = ();
+	type PriceForSiblingDelivery = NoPriceForMessageDelivery<ParaId>;
+}
+
+parameter_types! {
+	pub const Period: u32 = 6 * HOURS;
+	pub const Offset: u32 = 0;
+}
+
+impl pallet_session::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	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 let's 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 = ConstU32<100_000>;
+	type AllowMultipleBlocksPerSlot = ConstBool<false>;
+	type SlotDuration = pallet_aura::MinimumPeriodTimesTwo<Self>;
+}
+
+parameter_types! {
+	pub const PotId: PalletId = PalletId(*b"PotStake");
+	pub const SessionLength: BlockNumber = 6 * HOURS;
+	// StakingAdmin pluralistic body.
+	pub const StakingAdminBodyId: BodyId = BodyId::Defense;
+}
+
+/// We allow root and the StakingAdmin to execute privileged collator selection operations.
+pub type CollatorSelectionUpdateOrigin = EitherOfDiverse<
+	EnsureRoot<AccountId>,
+	EnsureXcm<IsVoiceOfBody<RelayLocation, StakingAdminBodyId>>,
+>;
+
+impl pallet_collator_selection::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	type Currency = Balances;
+	type UpdateOrigin = CollatorSelectionUpdateOrigin;
+	type PotId = PotId;
+	type MaxCandidates = ConstU32<100>;
+	type MinEligibleCollators = ConstU32<4>;
+	type MaxInvulnerables = ConstU32<20>;
+	// 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 = ();
+}
+
+/// Configure the pallet template in pallets/template.
+impl pallet_parachain_template::Config for Runtime {
+	type RuntimeEvent = RuntimeEvent;
+	type WeightInfo = pallet_parachain_template::weights::SubstrateWeight<Runtime>;
+}

templates/parachain/runtime/src/xcm_config.rs → templates/parachain/runtime/src/configs/xcm_config.rs

@@ -1,4 +1,4 @@
-use super::{
+use crate::{
 	AccountId, AllPalletsWithSystem, Balances, ParachainInfo, ParachainSystem, PolkadotXcm,
 	Runtime, RuntimeCall, RuntimeEvent, RuntimeOrigin, WeightToFee, XcmpQueue,
 };