Trait pallet_babe::HandleEquivocation

pub trait HandleEquivocation<T: Config> {
    type ReportLongevity: Get<u64>;

    // Required methods
    fn report_offence(
        reporters: Vec<T::AccountId>,
        offence: BabeEquivocationOffence<T::KeyOwnerIdentification>
    ) -> Result<(), OffenceError>;
    fn is_known_offence(
        offenders: &[T::KeyOwnerIdentification],
        time_slot: &Slot
    ) -> bool;
    fn submit_unsigned_equivocation_report(
        equivocation_proof: EquivocationProof<T::Header>,
        key_owner_proof: T::KeyOwnerProof
    ) -> DispatchResult;
    fn block_author() -> Option<T::AccountId>;
}

A trait with utility methods for handling equivocation reports in BABE. The trait provides methods for reporting an offence triggered by a valid equivocation report, checking the current block author (to declare as the reporter), and also for creating and submitting equivocation report extrinsics (useful only in offchain context).

Required Associated Types

type ReportLongevity: Get<u64>

The longevity, in blocks, that the equivocation report is valid for. When using the staking pallet this should be equal to the bonding duration (in blocks, not eras).

Required Methods

fn report_offence( reporters: Vec<T::AccountId>, offence: BabeEquivocationOffence<T::KeyOwnerIdentification> ) -> Result<(), OffenceError>

Report an offence proved by the given reporters.

fn is_known_offence( offenders: &[T::KeyOwnerIdentification], time_slot: &Slot ) -> bool

Returns true if all of the offenders at the given time slot have already been reported.

fn submit_unsigned_equivocation_report( equivocation_proof: EquivocationProof<T::Header>, key_owner_proof: T::KeyOwnerProof ) -> DispatchResult

Create and dispatch an equivocation report extrinsic.

fn block_author() -> Option<T::AccountId>

Fetch the current block author id, if defined.

Implementations on Foreign Types

impl<T: Config> HandleEquivocation<T> for ()

type ReportLongevity = ()

fn report_offence( _reporters: Vec<T::AccountId>, _offence: BabeEquivocationOffence<T::KeyOwnerIdentification> ) -> Result<(), OffenceError>

fn is_known_offence( _offenders: &[T::KeyOwnerIdentification], _time_slot: &Slot ) -> bool

fn submit_unsigned_equivocation_report( _equivocation_proof: EquivocationProof<T::Header>, _key_owner_proof: T::KeyOwnerProof ) -> DispatchResult

fn block_author() -> Option<T::AccountId>

Implementors

impl<T, R, L> HandleEquivocation<T> for EquivocationHandler<T::KeyOwnerIdentification, R, L>where T: Config + Config + SendTransactionTypes<Call<T>>, R: ReportOffence<T::AccountId, T::KeyOwnerIdentification, BabeEquivocationOffence<T::KeyOwnerIdentification>>, L: Get<u64>,

type ReportLongevity = L