Gonçalo Pestana
aac07af03c
The `TotalLockedValue` storage value in nomination pools pallet may get out of sync if the staking pallet does implicit withdrawal of unlocking chunks belonging to a bonded pool stash. This fix is based on a new method in the `OnStakingUpdate` traits, `on_withdraw`, which allows the nomination pools pallet to adjust the `TotalLockedValue` every time there is an implicit or explicit withdrawal from a bonded pool's stash. This PR also adds a migration that checks and updates the on-chain TVL if it got out of sync due to the bug this PR fixes. **Changes to `trait OnStakingUpdate`** In order for staking to notify the nomination pools pallet that chunks where withdrew, we add a new method, `on_withdraw` to the `OnStakingUpdate` trait. The nomination pools pallet filters the withdraws that are related to bonded pool accounts and updates the `TotalValueLocked` accordingly. **Others** - Adds try-state checks to the EPM/staking e2e tests - Adds tests for auto withdrawing in the context of nomination pools **To-do** - [x] check if we need a migration to fix the current `TotalValueLocked` (run try-runtime) - [x] migrations to fix the current on-chain TVL value ✅ **Kusama**: ``` TotalValueLocked: 99.4559 kKSM TotalValueLocked (calculated) 99.4559 kKSM ``` ⚠️ **Westend**: ``` TotalValueLocked: 18.4060 kWND TotalValueLocked (calculated) 18.4050 kWND ``` **Polkadot**: TVL not released yet. Closes https://github.com/paritytech/polkadot-sdk/issues/3055 --------- Co-authored-by: command-bot <> Co-authored-by: Ross Bulat <ross@parity.io> Co-authored-by: Dónal Murray <donal.murray@parity.io>
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