Trait polkadot_service::BabeApi

pub trait BabeApi<Block>: Core<Block>
where
    Block: Block,
{
    // Provided methods
    fn configuration(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
    ) -> Result<BabeConfiguration, ApiError> { ... }
    fn configuration_before_version_2(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
    ) -> Result<BabeConfigurationV1, ApiError> { ... }
    fn current_epoch_start(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
    ) -> Result<Slot, ApiError> { ... }
    fn current_epoch(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
    ) -> Result<Epoch, ApiError> { ... }
    fn next_epoch(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
    ) -> Result<Epoch, ApiError> { ... }
    fn generate_key_ownership_proof(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
        slot: Slot,
        authority_id: Public,
    ) -> Result<Option<OpaqueKeyOwnershipProof>, ApiError> { ... }
    fn submit_report_equivocation_unsigned_extrinsic(
        &self,
        __runtime_api_at_param__: <Block as Block>::Hash,
        equivocation_proof: EquivocationProof<<Block as Block>::Header, Public>,
        key_owner_proof: OpaqueKeyOwnershipProof,
    ) -> Result<Option<()>, ApiError> { ... }
}

API necessary for block authorship with BABE.

Provided Methods

fn configuration( &self, __runtime_api_at_param__: <Block as Block>::Hash, ) -> Result<BabeConfiguration, ApiError>

Return the configuration for BABE.

fn configuration_before_version_2( &self, __runtime_api_at_param__: <Block as Block>::Hash, ) -> Result<BabeConfigurationV1, ApiError>

👎Deprecated

Return the configuration for BABE. Version 1.

fn current_epoch_start( &self, __runtime_api_at_param__: <Block as Block>::Hash, ) -> Result<Slot, ApiError>

Returns the slot that started the current epoch.

fn current_epoch( &self, __runtime_api_at_param__: <Block as Block>::Hash, ) -> Result<Epoch, ApiError>

Returns information regarding the current epoch.

fn next_epoch( &self, __runtime_api_at_param__: <Block as Block>::Hash, ) -> Result<Epoch, ApiError>

Returns information regarding the next epoch (which was already previously announced).

fn generate_key_ownership_proof( &self, __runtime_api_at_param__: <Block as Block>::Hash, slot: Slot, authority_id: Public, ) -> Result<Option<OpaqueKeyOwnershipProof>, ApiError>

Generates a proof of key ownership for the given authority in the current epoch. An example usage of this module is coupled with the session historical module to prove that a given authority key is tied to a given staking identity during a specific session. Proofs of key ownership are necessary for submitting equivocation reports. NOTE: even though the API takes a slot as parameter the current implementations ignores this parameter and instead relies on this method being called at the correct block height, i.e. any point at which the epoch for the given slot is live on-chain. Future implementations will instead use indexed data through an offchain worker, not requiring older states to be available.

fn submit_report_equivocation_unsigned_extrinsic( &self, __runtime_api_at_param__: <Block as Block>::Hash, equivocation_proof: EquivocationProof<<Block as Block>::Header, Public>, key_owner_proof: OpaqueKeyOwnershipProof, ) -> Result<Option<()>, ApiError>

Submits an unsigned extrinsic to report an equivocation. The caller must provide the equivocation proof and a key ownership proof (should be obtained using generate_key_ownership_proof). The extrinsic will be unsigned and should only be accepted for local authorship (not to be broadcast to the network). This method returns None when creation of the extrinsic fails, e.g. if equivocation reporting is disabled for the given runtime (i.e. this method is hardcoded to return None). Only useful in an offchain context.

Trait Implementations

impl<Block> RuntimeApiInfo for dyn BabeApi<Block>

where Block: Block,

const ID: [u8; 8] = _

The identifier of the runtime api.

const VERSION: u32 = 2u32

The version of the runtime api.

Implementations on Foreign Types

impl<__SrApiBlock__, RuntimeApiImplCall> BabeApi<__SrApiBlock__> for RuntimeApiImpl<__SrApiBlock__, RuntimeApiImplCall>

where __SrApiBlock__: Block, RuntimeApiImplCall: CallApiAt<__SrApiBlock__> + 'static, <RuntimeApiImplCall as CallApiAt<__SrApiBlock__>>::StateBackend: Backend<<<__SrApiBlock__ as Block>::Header as Header>::Hashing>, &'static RuntimeApiImplCall: Send,

impl<__SrApiBlock__, RuntimeApiImplCall> BabeApi<__SrApiBlock__> for RuntimeApiImpl<__SrApiBlock__, RuntimeApiImplCall>

where __SrApiBlock__: Block, RuntimeApiImplCall: CallApiAt<__SrApiBlock__> + 'static, <RuntimeApiImplCall as CallApiAt<__SrApiBlock__>>::StateBackend: Backend<<<__SrApiBlock__ as Block>::Header as Header>::Hashing>, &'static RuntimeApiImplCall: Send,

Implementors