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Fix para-scheduler migration on Rococo (#1921)

Browse Source 
Closes https://github.com/paritytech/polkadot-sdk/issues/1916

Changes:
- Trivially wrap the migration into a version migration to enforce
idempotency.
- Opinionated logging nits

@liamaharon maybe we can add a check to the `try-runtime-cli` that
migrations are idempotent? It should be possible to check that the
storage root is identical after executing a second time (and that it
does not panic like it did here 😆).

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>
This commit is contained in:
Oliver Tale-Yazdi
2023-10-18 00:19:34 +02:00
committed by GitHub
parent 38c0604b46
commit 58b7927284
3 changed files with 41 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
polkadot/runtime/parachains/src/scheduler/migration.rs
+19 -17
View File
@@ -18,7 +18,8 @@
use super::*;
use frame_support::{
pallet_prelude::ValueQuery, storage_alias, traits::OnRuntimeUpgrade, weights::Weight,
migrations::VersionedMigration, pallet_prelude::ValueQuery, storage_alias,
traits::OnRuntimeUpgrade, weights::Weight,
};
mod v0 {
@@ -83,22 +84,26 @@ mod v0 {
pub mod v1 {
use super::*;
use crate::scheduler;
use frame_support::traits::StorageVersion;
pub struct MigrateToV1<T>(sp_std::marker::PhantomData<T>);
impl<T: Config> OnRuntimeUpgrade for MigrateToV1<T> {
#[allow(deprecated)]
pub type MigrateToV1<T> = VersionedMigration<
0,
1,
UncheckedMigrateToV1<T>,
Pallet<T>,
<T as frame_system::Config>::DbWeight,
>;
#[deprecated(note = "Use MigrateToV1 instead")]
pub struct UncheckedMigrateToV1<T>(sp_std::marker::PhantomData<T>);
#[allow(deprecated)]
impl<T: Config> OnRuntimeUpgrade for UncheckedMigrateToV1<T> {
fn on_runtime_upgrade() -> Weight {
if StorageVersion::get::<Pallet<T>>() == 0 {
let weight_consumed = migrate_to_v1::<T>();
let weight_consumed = migrate_to_v1::<T>();
log::info!(target: scheduler::LOG_TARGET, "Migrating para scheduler storage to v1");
StorageVersion::new(1).put::<Pallet<T>>();
log::info!(target: scheduler::LOG_TARGET, "Migrating para scheduler storage to v1");
weight_consumed
} else {
log::warn!(target: scheduler::LOG_TARGET, "Para scheduler v1 migration should be removed.");
T::DbWeight::get().reads(1)
}
weight_consumed
}
#[cfg(feature = "try-runtime")]
@@ -117,10 +122,7 @@ pub mod v1 {
#[cfg(feature = "try-runtime")]
fn post_upgrade(state: Vec<u8>) -> Result<(), sp_runtime::DispatchError> {
log::trace!(target: crate::scheduler::LOG_TARGET, "Running post_upgrade()");
ensure!(
StorageVersion::get::<Pallet<T>>() >= 1,
"Storage version should be at least `1` after the migration"
);
ensure!(
v0::Scheduled::<T>::get().len() == 0,
"Scheduled should be empty after the migration"