From 11ace080fdf42f3594ee6d2d7e0d2a070684019a Mon Sep 17 00:00:00 2001
From: s0me0ne-unkn0wn <48632512+s0me0ne-unkn0wn@users.noreply.github.com>
Date: Mon, 19 Feb 2024 10:39:34 +0100
Subject: [PATCH] `im-online` removal cleanup: remove off-chain storage (#2290)
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This is a follow-up for `im-online` pallet removal that is cleaning up
its off-chain storage. Must be merged no earlier than #2265 is enacted.
Related: #1964
---------
Co-authored-by: Bastian Köcher <git@kchr.de>
---
substrate/frame/im-online/src/migration.rs | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/substrate/frame/im-online/src/migration.rs b/substrate/frame/im-online/src/migration.rs
index 3860a7ca53295..0d2c0a055b6d8 100644
--- a/substrate/frame/im-online/src/migration.rs
+++ b/substrate/frame/im-online/src/migration.rs
@@ -116,6 +116,21 @@ pub mod v1 {
}
}
+/// Clears the pallet's offchain storage.
+///
+/// Must be put in `OffchainWorkerApi::offchain_worker` after
+/// the pallet was removed.
+pub fn clear_offchain_storage(validator_set_size: u32) {
+ (0..validator_set_size).for_each(|idx| {
+ let key = {
+ let mut key = DB_PREFIX.to_vec();
+ key.extend(idx.encode());
+ key
+ };
+ sp_runtime::offchain::storage::StorageValueRef::persistent(&key).clear();
+ });
+}
+
#[cfg(all(feature = "try-runtime", test))]
mod test {
use super::*;