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pallet_staking

Struct DefaultExposureOf

Source 
pub struct DefaultExposureOf<T>(/* private fields */);
Expand description

Identify a validator with their default exposure.

This type should not be used in a fresh runtime, instead use UnitIdentificationOf.

In the past, a type called ExposureOf used to return the full exposure of a validator to identify their exposure. This type is kept, marked as deprecated, for backwards compatibility of external SDK users, but is no longer used in this repo.

In the new model, we don’t need to identify a validator with their full exposure anymore, and therefore UnitIdentificationOf is perfectly fine. Yet, for runtimes that used to work with ExposureOf, we need to be able to decode old identification data, possibly stored in the historical session pallet in older blocks. Therefore, this type is a good compromise, allowing old exposure identifications to be decoded, and returning a few zero bytes (Exposure::default) for any new identification request.

A typical usage of this type is:

ⓘ
impl pallet_session::historical::Config for Runtime {
    type FullIdentification = sp_staking::Exposure<AccountId, Balance>;
    type IdentificationOf = pallet_staking::DefaultExposureOf<Self>
}

Trait Implementations§

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impl<T: Config> Convert<<T as Config>::AccountId, Option<Exposure<<T as Config>::AccountId, <T as Config>::CurrencyBalance>>> for DefaultExposureOf<T>

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fn convert( validator: T::AccountId, ) -> Option<Exposure<T::AccountId, BalanceOf<T>>>

Make conversion.

Auto Trait Implementations§

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impl<T> Freeze for DefaultExposureOf<T>

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impl<T> RefUnwindSafe for DefaultExposureOf<T>
where T: RefUnwindSafe,

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impl<T> Send for DefaultExposureOf<T>
where T: Send,

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impl<T> Sync for DefaultExposureOf<T>
where T: Sync,

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impl<T> Unpin for DefaultExposureOf<T>
where T: Unpin,

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impl<T> UnwindSafe for DefaultExposureOf<T>
where T: UnwindSafe,

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