Add set custom header to Seedling Runtime (#846)

* before adding seedling client side

* seedling runtime compiles

* create seedling spec script added

* seedling node & BaseCallFilter fixes

* update AllPalets

* formatting

* CallFilter + SignedExtra + AccountData fix

* XCM removed

* cleanup

* solo-to-para pallet added & before testing

* fix runtime upgrade method

* soloToPara pallet + set header

* clean up

* clean up 2

* signed extension check sudo added

* fmt + cleanup

* Refac code and fixes

* fmt

* Update pallets/solo-to-para/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update pallets/solo-to-para/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update pallets/solo-to-para/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* small fixes

* OnValidationData used

* small changes

* Update pallets/solo-to-para/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update pallets/solo-to-para/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update pallets/solo-to-para/src/lib.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* OnValidationData replaced by OnSystemEvent

* fmt + cargo fix

* disable-default-bootnodes for seedling script

Co-authored-by: Ricardo Rius <ricardo@parity.io>
Co-authored-by: Ricardo Rius <9488369+riusricardo@users.noreply.github.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

cumulus/pallets/parachain-system/src/lib.rs

@@ -30,7 +30,7 @@
 use codec::Encode;
 use cumulus_primitives_core::{
 	relay_chain, AbridgedHostConfiguration, ChannelStatus, CollationInfo, DmpMessageHandler,
-	GetChannelInfo, InboundDownwardMessage, InboundHrmpMessage, MessageSendError, OnValidationData,
+	GetChannelInfo, InboundDownwardMessage, InboundHrmpMessage, MessageSendError,
 	OutboundHrmpMessage, ParaId, PersistedValidationData, UpwardMessage, UpwardMessageSender,
 	XcmpMessageHandler, XcmpMessageSource,
 };
@@ -105,7 +105,7 @@ pub mod pallet {
 		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;
 
 		/// Something which can be notified when the validation data is set.
-		type OnValidationData: OnValidationData;
+		type OnSystemEvent: OnSystemEvent;
 
 		/// Returns the parachain ID we are running with.
 		type SelfParaId: Get<ParaId>;
@@ -329,6 +329,7 @@ pub mod pallet {
 					let validation_code = <PendingValidationCode<T>>::take();
 
 					Self::put_parachain_code(&validation_code);
+					<T::OnSystemEvent as OnSystemEvent>::on_validation_code_applied();
 					Self::deposit_event(Event::ValidationFunctionApplied(vfp.relay_parent_number));
 				},
 				Some(relay_chain::v1::UpgradeGoAhead::Abort) => {
@@ -354,7 +355,7 @@ pub mod pallet {
 			<RelevantMessagingState<T>>::put(relevant_messaging_state.clone());
 			<HostConfiguration<T>>::put(host_config);
 
-			<T::OnValidationData as OnValidationData>::on_validation_data(&vfp);
+			<T::OnSystemEvent as OnSystemEvent>::on_validation_data(&vfp);
 
 			// TODO: This is more than zero, but will need benchmarking to figure out what.
 			let mut total_weight = 0;
@@ -397,7 +398,7 @@ pub mod pallet {
 			code: Vec<u8>,
 		) -> DispatchResultWithPostInfo {
 			Self::validate_authorized_upgrade(&code[..])?;
-			Self::set_code_impl(code)?;
+			Self::schedule_code_upgrade(code)?;
 			AuthorizedUpgrade::<T>::kill();
 			Ok(Pays::No.into())
 		}
@@ -883,7 +884,7 @@ impl<T: Config> Pallet<T> {
 	}
 
 	/// The implementation of the runtime upgrade functionality for parachains.
-	fn set_code_impl(validation_function: Vec<u8>) -> DispatchResult {
+	pub fn schedule_code_upgrade(validation_function: Vec<u8>) -> DispatchResult {
 		// Ensure that `ValidationData` exists. We do not care about the validation data per se,
 		// but we do care about the [`UpgradeRestrictionSignal`] which arrives with the same inherent.
 		ensure!(<ValidationData<T>>::exists(), Error::<T>::ValidationDataNotAvailable,);
@@ -949,7 +950,7 @@ pub struct ParachainSetCode<T>(sp_std::marker::PhantomData<T>);
 
 impl<T: Config> frame_system::SetCode<T> for ParachainSetCode<T> {
 	fn set_code(code: Vec<u8>) -> DispatchResult {
-		Pallet::<T>::set_code_impl(code)
+		Pallet::<T>::schedule_code_upgrade(code)
 	}
 }
 
@@ -1007,6 +1008,21 @@ pub trait CheckInherents<Block: BlockT> {
 	) -> frame_support::inherent::CheckInherentsResult;
 }
 
+/// Something that should be informed about system related events.
+///
+/// This includes events like [`on_validation_data`](Self::on_validation_data) that is being
+/// called when the parachain inherent is executed that contains the validation data.
+/// Or like [`on_validation_code_applied`](Self::on_validation_code_applied) that is called
+/// when the new validation is written to the state. This means that
+/// from the next block the runtime is being using this new code.
+#[impl_trait_for_tuples::impl_for_tuples(30)]
+pub trait OnSystemEvent {
+	/// Called in each blocks once when the validation data is set by the inherent.
+	fn on_validation_data(data: &PersistedValidationData);
+	/// Called when the validation code is being applied, aka from the next block on this is the new runtime.
+	fn on_validation_code_applied();
+}
+
 /// Implements [`BlockNumberProvider`] that returns relay chain block number fetched from
 /// validation data.
 /// NTOE: When validation data is not available (e.g. within on_initialize), 0 will be returned.

cumulus/pallets/parachain-system/src/tests.rs

@@ -100,7 +100,7 @@ impl frame_system::Config for Test {
 }
 impl Config for Test {
 	type Event = Event;
-	type OnValidationData = ();
+	type OnSystemEvent = ();
 	type SelfParaId = ParachainId;
 	type OutboundXcmpMessageSource = FromThreadLocal;
 	type DmpMessageHandler = SaveIntoThreadLocal;