Trait frame_election_provider_support::ElectionProvider

source · 
pub trait ElectionProvider {
    type AccountId;
    type BlockNumber;
    type Error: Debug;
    type DataProvider: ElectionDataProvider<AccountId = Self::AccountId, BlockNumber = Self::BlockNumber>;

    fn elect() -> Result<Supports<Self::AccountId>, Self::Error>;
}
Expand description

Something that can compute the result of an election and pass it back to the caller.

This trait only provides an interface to request an election, i.e. ElectionProvider::elect. That data required for the election need to be passed to the implemented of this trait through ElectionProvider::DataProvider.

Required Associated Types§

The account identifier type.

The block number type.

The error type that is returned by the provider.

The data provider of the election.

Required Methods§

Elect a new set of winners, without specifying any bounds on the amount of data fetched from Self::DataProvider. An implementation could nonetheless impose its own custom limits.

The result is returned in a target major format, namely as vector of supports.

This should be implemented as a self-weighing function. The implementor should register its appropriate weight at the end of execution with the system pallet directly.

Implementors§