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Use Message Queue as DMP and XCMP dispatch queue (#1246)
(imported from https://github.com/paritytech/cumulus/pull/2157) ## Changes This MR refactores the XCMP, Parachains System and DMP pallets to use the [MessageQueue](https://github.com/paritytech/substrate/pull/12485) for delayed execution of incoming messages. The DMP pallet is entirely replaced by the MQ and thereby removed. This allows for PoV-bounded execution and resolves a number of issues that stem from the current work-around. All System Parachains adopt this change. The most important changes are in `primitives/core/src/lib.rs`, `parachains/common/src/process_xcm_message.rs`, `pallets/parachain-system/src/lib.rs`, `pallets/xcmp-queue/src/lib.rs` and the runtime configs. ### DMP Queue Pallet The pallet got removed and its logic refactored into parachain-system. Overweight message management can be done directly through the MQ pallet. Final undeployment migrations are provided by `cumulus_pallet_dmp_queue::UndeployDmpQueue` and `DeleteDmpQueue` that can be configured with an aux config trait like: ```rust parameter_types! { pub const DmpQueuePalletName: &'static str = \"DmpQueue\" < CHANGE ME; pub const RelayOrigin: AggregateMessageOrigin = AggregateMessageOrigin::Parent; } impl cumulus_pallet_dmp_queue::MigrationConfig for Runtime { type PalletName = DmpQueuePalletName; type DmpHandler = frame_support::traits::EnqueueWithOrigin<MessageQueue, RelayOrigin>; type DbWeight = <Runtime as frame_system::Config>::DbWeight; } // And adding them to your Migrations tuple: pub type Migrations = ( ... cumulus_pallet_dmp_queue::UndeployDmpQueue<Runtime>, cumulus_pallet_dmp_queue::DeleteDmpQueue<Runtime>, ); ``` ### XCMP Queue pallet Removed all dispatch queue functionality. Incoming XCMP messages are now either: Immediately handled if they are Signals, enqueued into the MQ pallet otherwise. New config items for the XCMP queue pallet: ```rust /// The actual queue implementation that retains the messages for later processing. type XcmpQueue: EnqueueMessage<ParaId>; /// How a XCM over HRMP from a sibling parachain should be processed. type XcmpProcessor: ProcessMessage<Origin = ParaId>; /// The maximal number of suspended XCMP channels at the same time. #[pallet::constant] type MaxInboundSuspended: Get<u32>; ``` How to configure those: ```rust // Use the MessageQueue pallet to store messages for later processing. The `TransformOrigin` is needed since // the MQ pallet itself operators on `AggregateMessageOrigin` but we want to enqueue `ParaId`s. type XcmpQueue = TransformOrigin<MessageQueue, AggregateMessageOrigin, ParaId, ParaIdToSibling>; // Process XCMP messages from siblings. This is type-safe to only accept `ParaId`s. They will be dispatched // with origin `Junction::Sibling(…)`. type XcmpProcessor = ProcessFromSibling< ProcessXcmMessage< AggregateMessageOrigin, xcm_executor::XcmExecutor<xcm_config::XcmConfig>, RuntimeCall, >, >; // Not really important what to choose here. Just something larger than the maximal number of channels. type MaxInboundSuspended = sp_core::ConstU32<1_000>; ``` The `InboundXcmpStatus` storage item was replaced by `InboundXcmpSuspended` since it now only tracks inbound queue suspension and no message indices anymore. Now only sends the most recent channel `Signals`, as all prio ones are out-dated anyway. ### Parachain System pallet For `DMP` messages instead of forwarding them to the `DMP` pallet, it now pushes them to the configured `DmpQueue`. The message processing which was triggered in `set_validation_data` is now being done by the MQ pallet `on_initialize`. XCMP messages are still handed off to the `XcmpMessageHandler` (XCMP-Queue pallet) - no change here. New config items for the parachain system pallet: ```rust /// Queues inbound downward messages for delayed processing. /// /// Analogous to the `XcmpQueue` of the XCMP queue pallet. type DmpQueue: EnqueueMessage<AggregateMessageOrigin>; ``` How to configure: ```rust /// Use the MQ pallet to store DMP messages for delayed processing. type DmpQueue = MessageQueue; ``` ## Message Flow The flow of messages on the parachain side. Messages come in from the left via the `Validation Data` and finally end up at the `Xcm Executor` on the right.  ## Further changes - Bumped the default suspension, drop and resume thresholds in `QueueConfigData::default()`. - `XcmpQueue::{suspend_xcm_execution, resume_xcm_execution}` errors when they would be a noop. - Properly validate the `QueueConfigData` before setting it. - Marked weight files as auto-generated so they wont auto-expand in the MR files view. - Move the `hypothetical` asserts to `frame_support` under the name `experimental_hypothetically` Questions: - [ ] What about the ugly `#[cfg(feature = \"runtime-benchmarks\")]` in the runtimes? Not sure how to best fix. Just having them like this makes tests fail that rely on the real message processor when the feature is enabled. - [ ] Need a good weight for `MessageQueueServiceWeight`. The scheduler already takes 80% so I put it to 10% but that is quite low. TODO: - [x] Remove c&p code after https://github.com/paritytech/polkadot/pull/6271 - [x] Use `HandleMessage` once it is public in Substrate - [x] fix `runtime-benchmarks` feature https://github.com/paritytech/polkadot/pull/6966 - [x] Benchmarks - [x] Tests - [ ] Migrate `InboundXcmpStatus` to `InboundXcmpSuspended` - [x] Possibly cleanup Migrations (DMP+XCMP) - [x] optional: create `TransformProcessMessageOrigin` in Substrate and replace `ProcessFromSibling` - [ ] Rerun weights on ref HW --------- Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Co-authored-by: Liam Aharon <liam.aharon@hotmail.com> Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com> Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com> Co-authored-by: command-bot <>
This commit is contained in:
Oliver Tale-Yazdi
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GitHub
GitHub
parent
7df0417bcd
commit
e1c033ebe1
@@ -33,14 +33,16 @@ mod weights;
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pub mod xcm_config;
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use cumulus_pallet_parachain_system::RelayNumberStrictlyIncreases;
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use cumulus_primitives_core::ParaId;
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use cumulus_primitives_core::{AggregateMessageOrigin, ParaId};
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use frame_support::{
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construct_runtime,
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dispatch::DispatchClass,
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genesis_builder_helper::{build_config, create_default_config},
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pallet_prelude::Weight,
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parameter_types,
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traits::{AsEnsureOriginWithArg, ConstBool, ConstU32, ConstU64, ConstU8, Everything},
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traits::{
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AsEnsureOriginWithArg, ConstBool, ConstU32, ConstU64, ConstU8, Everything, TransformOrigin,
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},
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weights::{
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constants::WEIGHT_REF_TIME_PER_SECOND, ConstantMultiplier, FeePolynomial,
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WeightToFeeCoefficient, WeightToFeeCoefficients, WeightToFeePolynomial,
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@@ -51,6 +53,7 @@ use frame_system::{
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limits::{BlockLength, BlockWeights},
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EnsureRoot, EnsureSigned,
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};
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use parachains_common::message_queue::{NarrowOriginToSibling, ParaIdToSibling};
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use polkadot_runtime_common::xcm_sender::NoPriceForMessageDelivery;
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use smallvec::smallvec;
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use sp_api::impl_runtime_apis;
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@@ -67,7 +70,7 @@ use sp_std::prelude::*;
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#[cfg(feature = "std")]
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use sp_version::NativeVersion;
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use sp_version::RuntimeVersion;
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use xcm_config::{AssetsToBlockAuthor, XcmConfig, XcmOriginToTransactDispatchOrigin};
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use xcm_config::{AssetsToBlockAuthor, XcmOriginToTransactDispatchOrigin};
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#[cfg(any(feature = "std", test))]
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pub use sp_runtime::BuildStorage;
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@@ -80,7 +83,6 @@ use weights::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight};
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// XCM Imports
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use parachains_common::{AccountId, Signature};
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use xcm::latest::prelude::BodyId;
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use xcm_executor::XcmExecutor;
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/// Balance of an account.
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pub type Balance = u128;
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@@ -458,13 +460,15 @@ impl pallet_assets::Config for Runtime {
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parameter_types! {
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pub const ReservedXcmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT.saturating_div(4);
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pub const ReservedDmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT.saturating_div(4);
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pub const RelayOrigin: AggregateMessageOrigin = AggregateMessageOrigin::Parent;
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}
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impl cumulus_pallet_parachain_system::Config for Runtime {
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type WeightInfo = ();
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type RuntimeEvent = RuntimeEvent;
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type OnSystemEvent = ();
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type SelfParaId = parachain_info::Pallet<Runtime>;
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type DmpMessageHandler = DmpQueue;
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type DmpQueue = frame_support::traits::EnqueueWithOrigin<MessageQueue, RelayOrigin>;
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type ReservedDmpWeight = ReservedDmpWeight;
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type OutboundXcmpMessageSource = XcmpQueue;
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type XcmpMessageHandler = XcmpQueue;
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@@ -480,26 +484,42 @@ impl cumulus_pallet_parachain_system::Config for Runtime {
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impl parachain_info::Config for Runtime {}
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parameter_types! {
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pub MessageQueueServiceWeight: Weight = Perbill::from_percent(35) * RuntimeBlockWeights::get().max_block;
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}
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impl pallet_message_queue::Config for Runtime {
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type RuntimeEvent = RuntimeEvent;
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type WeightInfo = ();
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type MessageProcessor = xcm_builder::ProcessXcmMessage<
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AggregateMessageOrigin,
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xcm_executor::XcmExecutor<xcm_config::XcmConfig>,
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RuntimeCall,
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>;
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type Size = u32;
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// The XCMP queue pallet is only ever able to handle the `Sibling(ParaId)` origin:
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type QueueChangeHandler = NarrowOriginToSibling<XcmpQueue>;
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type QueuePausedQuery = NarrowOriginToSibling<XcmpQueue>;
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type HeapSize = sp_core::ConstU32<{ 64 * 1024 }>;
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type MaxStale = sp_core::ConstU32<8>;
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type ServiceWeight = MessageQueueServiceWeight;
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}
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impl cumulus_pallet_aura_ext::Config for Runtime {}
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impl cumulus_pallet_xcmp_queue::Config for Runtime {
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type RuntimeEvent = RuntimeEvent;
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type XcmExecutor = XcmExecutor<XcmConfig>;
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type ChannelInfo = ParachainSystem;
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type VersionWrapper = PolkadotXcm;
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type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
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// Enqueue XCMP messages from siblings for later processing.
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type XcmpQueue = TransformOrigin<MessageQueue, AggregateMessageOrigin, ParaId, ParaIdToSibling>;
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type MaxInboundSuspended = sp_core::ConstU32<1_000>;
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type ControllerOrigin = EnsureRoot<AccountId>;
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type ControllerOriginConverter = XcmOriginToTransactDispatchOrigin;
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type WeightInfo = ();
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type PriceForSiblingDelivery = NoPriceForMessageDelivery<ParaId>;
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}
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impl cumulus_pallet_dmp_queue::Config for Runtime {
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type RuntimeEvent = RuntimeEvent;
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type XcmExecutor = XcmExecutor<XcmConfig>;
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type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
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}
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parameter_types! {
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pub const Period: u32 = 6 * HOURS;
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pub const Offset: u32 = 0;
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@@ -596,7 +616,7 @@ construct_runtime!(
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XcmpQueue: cumulus_pallet_xcmp_queue::{Pallet, Call, Storage, Event<T>} = 30,
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PolkadotXcm: pallet_xcm::{Pallet, Call, Event<T>, Origin, Config<T>} = 31,
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CumulusXcm: cumulus_pallet_xcm::{Pallet, Event<T>, Origin} = 32,
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DmpQueue: cumulus_pallet_dmp_queue::{Pallet, Call, Storage, Event<T>} = 33,
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MessageQueue: pallet_message_queue::{Pallet, Call, Storage, Event<T>} = 34,
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// The main stage.
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Assets: pallet_assets::{Pallet, Call, Storage, Event<T>} = 50,
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@@ -605,19 +625,17 @@ construct_runtime!(
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}
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);
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#[cfg(feature = "runtime-benchmarks")]
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#[macro_use]
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extern crate frame_benchmarking;
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#[cfg(feature = "runtime-benchmarks")]
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mod benches {
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define_benchmarks!(
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frame_benchmarking::define_benchmarks!(
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[frame_system, SystemBench::<Runtime>]
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[pallet_balances, Balances]
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[pallet_message_queue, MessageQueue]
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[pallet_session, SessionBench::<Runtime>]
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[pallet_sudo, Sudo]
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[pallet_timestamp, Timestamp]
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[pallet_collator_selection, CollatorSelection]
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[cumulus_pallet_parachain_system, ParachainSystem]
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[cumulus_pallet_xcmp_queue, XcmpQueue]
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);
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}
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