Trait pallet_authorship::Trait[−][src]

pub trait Trait: Trait {
    type FindAuthor: FindAuthor<Self::AccountId>;
    type UncleGenerations: Get<Self::BlockNumber>;
    type FilterUncle: FilterUncle<Self::Header, Self::AccountId>;
    type EventHandler: EventHandler<Self::AccountId, Self::BlockNumber>;
}

Associated Types

type FindAuthor: FindAuthor<Self::AccountId>[src]

Find the author of a block.

type UncleGenerations: Get<Self::BlockNumber>[src]

The number of blocks back we should accept uncles. This means that we will deal with uncle-parents that are UncleGenerations + 1 before now.

type FilterUncle: FilterUncle<Self::Header, Self::AccountId>[src]

A filter for uncles within a block. This is for implementing further constraints on what uncles can be included, other than their ancestry.

For PoW, as long as the seals are checked, there is no need to use anything but the VerifySeal implementation as the filter. This is because the cost of making many equivocating uncles is high.

For PoS, there is no such limitation, so a further constraint must be imposed beyond a seal check in order to prevent an arbitrary number of equivocating uncles from being included.

The OnePerAuthorPerHeight filter is good for many slot-based PoS engines.

type EventHandler: EventHandler<Self::AccountId, Self::BlockNumber>[src]

An event handler for authored blocks.

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Implementors

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