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stake-pool: Make activating / deactivating check stricter #4002
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2501babe
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Jan 27, 2023
HaoranYi
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Jul 19, 2023
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Problem
With #3987, we added a check to make sure that the existing transient stake was "going in the right direction", ie. that it's activating during "increase additional" and "redelegate", and that it's deactivating during "decrease additional". The existing check is oversimplified, and only checks that it's activating OR active / deactivating OR inactive.
Solution
Make the check a bit more strict, to make sure that it's activating in that epoch. This is a pedantic change, since it's typically impossible to "increase additional" / "redelegate" with transient stakes that are active or inactive, unless there's an explicit ask to not merge transient accounts while updating. Either way, the runtime would catch that.