From dd31fae56c1a9adf44c1c86db9e1731ff6b20e3c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bastian=20K=C3=B6cher?= <bkchr@users.noreply.github.com>
Date: Fri, 24 Apr 2020 12:35:25 +0200
Subject: [PATCH] Make sure staking migration code runs only for `version =
2_0_0` (#5768)
---
substrate/frame/staking/src/lib.rs | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/substrate/frame/staking/src/lib.rs b/substrate/frame/staking/src/lib.rs
index 34b6a4f7958..d175c26e7ae 100644
--- a/substrate/frame/staking/src/lib.rs
+++ b/substrate/frame/staking/src/lib.rs
@@ -1246,8 +1246,12 @@ decl_module! {
fn on_runtime_upgrade() -> Weight {
// For Kusama the type hasn't actually changed as Moment was u64 and was the number of
// millisecond since unix epoch.
- StorageVersion::put(Releases::V3_0_0);
- Self::migrate_last_reward_to_claimed_rewards();
+ StorageVersion::mutate(|v| {
+ if matches!(v, Releases::V2_0_0) {
+ Self::migrate_last_reward_to_claimed_rewards();
+ }
+ *v = Releases::V3_0_0;
+ });
0
}
--
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