Cancel auctions on Coretime launch (#215)

Parachain Auctions that would conclude after Coretime launch, would not
be served, yet we are cancelling all auctions that are still ongoing.

- [ ] Does not require a CHANGELOG entry

---------

Co-authored-by: eskimor <eskimor@no-such-url.com>
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: Bastian Köcher <git@kchr.de>

.github/workflows/check-migrations.yml

@@ -98,7 +98,7 @@ jobs:
 
           echo "Flags: $EXTRA_FLAGS"
 
-          ./try-runtime \
+          RUST_LOG=runtime=DEBUG ./try-runtime \
             --runtime $RUNTIME_BLOB_PATH \
             on-runtime-upgrade --checks=pre-and-post \
             $EXTRA_FLAGS \

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Feature for enabling debug prints in the Polkadot and Kusama runtime ([polkadot-fellows/runtimes#85](https://github.com/polkadot-fellows/runtimes/pull/85))
 - Added new "Wish for Change" track ([polkadot-fellows/runtimes#184](https://github.com/polkadot-fellows/runtimes/pull/184))
 - Enable Coretime and on-demand on Kusama ([polkadot-fellows/runtimes#159](https://github.com/polkadot-fellows/runtimes/pull/159)
+- Cancel Parachain Auctions [polkadot-fellows/runtimes#215](https://github.com/polkadot-fellows/runtimes/pull/215)
 
 ### Changed
 

relay/kusama/src/lib.rs

@@ -1745,6 +1745,9 @@ pub type Migrations = (migrations::Unreleased, migrations::Permanent);
 #[allow(deprecated, missing_docs)]
 pub mod migrations {
 	use super::*;
+	use frame_support::traits::OnRuntimeUpgrade;
+	use pallet_scheduler::WeightInfo as SchedulerWeightInfo;
+	use runtime_common::auctions::WeightInfo as AuctionsWeightInfo;
 	#[cfg(feature = "try-runtime")]
 	use sp_core::crypto::ByteArray;
 
@@ -1849,6 +1852,41 @@ pub mod migrations {
 		}
 	}
 
+	/// Cancel all ongoing auctions.
+	///
+	/// Any leases that come into existence after coretime was launched will not be served. Yet,
+	/// any ongoing auctions must be cancelled.
+	///
+	/// Safety:
+	///
+	/// - After coretime is launched, there are no auctions anymore. So if this forgotten to
+	/// be removed after the runtime upgrade, running this again on the next one is harmless.
+	/// - I am assuming scheduler `TaskName`s are unique, so removal of the scheduled entry
+	/// multiple times should also be fine.
+	pub struct CancelAuctions;
+	impl OnRuntimeUpgrade for CancelAuctions {
+		fn on_runtime_upgrade() -> Weight {
+			if let Err(err) = Auctions::cancel_auction(frame_system::RawOrigin::Root.into()) {
+				log::debug!(target: "runtime", "Cancelling auctions failed: {:?}", err);
+			}
+			// Cancel scheduled auction as well:
+			if let Err(err) = Scheduler::cancel_named(
+				pallet_custom_origins::Origin::AuctionAdmin.into(),
+				[
+					0x5c, 0x68, 0xbf, 0x0c, 0x2d, 0x11, 0x04, 0x91, 0x6b, 0xa5, 0xa4, 0xde, 0xe6,
+					0xb8, 0x14, 0xe8, 0x2b, 0x27, 0x93, 0x78, 0x4c, 0xb6, 0xe7, 0x69, 0x04, 0x00,
+					0x1a, 0x59, 0x49, 0xc1, 0x63, 0xb1,
+				],
+			) {
+				log::debug!(target: "runtime", "Cancelling scheduled auctions failed: {:?}", err);
+			}
+			weights::runtime_common_auctions::WeightInfo::<Runtime>::cancel_auction()
+				.saturating_add(weights::pallet_scheduler::WeightInfo::<Runtime>::cancel_named(
+					<Runtime as pallet_scheduler::Config>::MaxScheduledPerBlock::get(),
+				))
+		}
+	}
+
 	/// Unreleased migrations. Add new ones here:
 	pub type Unreleased = (
 		pallet_nomination_pools::migration::versioned::V7ToV8<Runtime>,
@@ -1872,6 +1910,7 @@ pub mod migrations {
 			ImOnlinePalletName,
 			<Runtime as frame_system::Config>::DbWeight,
 		>,
+		CancelAuctions,
 	);
 
 	/// Migrations/checks that do not need to be versioned and can run on every update.