Struct AuthoritiesTracker 

pub struct AuthoritiesTracker<P: Pair, B: Block, C> { /* private fields */ }

AURA authorities tracker. Updates authorities based on the AURA authorities change digest in the block header.

Implementations

impl<P: Pair, B: Block, C> AuthoritiesTracker<P, B, C>

pub fn new(client: Arc<C>) -> Self

Create a new AuthoritiesTracker.

impl<P, B, C> AuthoritiesTracker<P, B, C>

where P: Pair, B: Block, C: HeaderBackend<B> + HeaderMetadata<B, Error = Error> + ProvideRuntimeApi<B>, P::Public: Codec + Debug, C::Api: AuraApi<B, <P as Pair>::Public>,

pub fn fetch_or_update( &self, header: &B::Header, compatibility_mode: &CompatibilityMode<NumberFor<B>>, ) -> Result<Vec<<P as Pair>::Public>, String>

Fetch authorities from the tracker, if available. If not available, fetch from the client and update the tracker.

pub fn import(&self, post_header: &B::Header) -> Result<(), String>

If there is an authorities change digest in the header, import it into the tracker.