keep releases

frame/staking/src/migrations.rs

@@ -21,34 +21,53 @@ use frame_election_provider_support::SortedListProvider;
 use frame_support::traits::OnRuntimeUpgrade;
 use frame_support::dispatch::GetStorageVersion;
 
+#[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
+enum OldReleases {
+	V1_0_0Ancient,
+	V2_0_0,
+	V3_0_0,
+	V4_0_0,
+	V5_0_0,  // blockable validators.
+	V6_0_0,  // removal of all storage associated with offchain phragmen.
+	V7_0_0,  // keep track of number of nominators / validators in map
+	V8_0_0,  // populate `VoterList`.
+	V9_0_0,  // inject validators into `VoterList` as well.
+	V10_0_0, // remove `EarliestUnappliedSlash`.
+	V11_0_0, // Move pallet storage prefix, e.g. BagsList -> VoterBagsList
+	V12_0_0, // remove `HistoryDepth`.
+}
+
+impl Default for OldReleases {
+	fn default() -> Self {
+		OldReleases::V11_0_0
+	}
+}
+
 pub mod v13 {
 	use super::*;
 	use frame_support::{pallet_prelude::ValueQuery, storage_alias};
 
 	#[storage_alias]
-	type StorageVersion<T: Config> = StorageValue<Pallet<T>, Releases, ValueQuery>;
+	type StorageVersion<T: Config> = StorageValue<Pallet<T>, OldReleases, ValueQuery>;
+
 
-	#[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
-	enum Releases {
-		V12_0_0,
-	}
 	pub struct MigrateToV13<T>(sp_std::marker::PhantomData<T>);
 	impl<T: Config> OnRuntimeUpgrade for MigrateToV13<T> {
 		#[cfg(feature = "try-runtime")]
 		fn pre_upgrade() -> Result<Vec<u8>, &'static str> {
 			frame_support::ensure!(
-				StorageVersion::<T>::get() == Releases::V12_0_0,
+				StorageVersion::<T>::get() == OldReleases::V12_0_0,
 				"Required v12 before upgrading to v13"
 			);
 
 			Ok(Default::default())
 		}
 
-		fn on_runtime_upgrade() -> frame_support::weights::Weight {
+		fn on_runtime_upgrade() -> Weight {
 			let current = Pallet::<T>::current_storage_version();
 			let onchain = StorageVersion::<T>::get();
 
-			if current == 13 && onchain == Releases::V12_0_0 {
+			if current == 13 && onchain == OldReleases::V12_0_0 {
 				StorageVersion::<T>::kill();
 				current.put::<Pallet<T>>();
 

frame/staking/src/pallet/mod.rs

@@ -59,7 +59,7 @@ pub mod pallet {
 	use super::*;
 
 	/// The current storage version.
-	const STORAGE_VERSION: StorageVersion = StorageVersion::new(12);
+	const STORAGE_VERSION: StorageVersion = StorageVersion::new(13);
 
 	#[pallet::pallet]
 	#[pallet::generate_store(pub(crate) trait Store)]