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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>
This commit is contained in:
s0me0ne-unkn0wn
2024-02-19 10:39:34 +01:00
committed by GitHub
parent 3168ed4d6a
commit a5492dc6ba
4 changed files with 37 additions and 0 deletions
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substrate/frame/im-online/src/migration.rs
+15
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@@ -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::*;