Crate sc_consensus_aura

Aura (Authority-round) consensus in substrate.

Aura works by having a list of authorities A who are expected to roughly agree on the current time. Time is divided up into discrete slots of t seconds each. For each slot s, the author of that slot is A[s % |A|].

The author is allowed to issue one block but not more during that slot, and it will be built upon the longest valid chain that has been seen.

Blocks from future steps will be either deferred or rejected depending on how far in the future they are.

NOTE: Aura itself is designed to be generic over the crypto used.

Re-exports

• pub use crate::standalone::find_pre_digest;
• pub use crate::standalone::slot_duration;

Modules

• standalone
  Standalone functions used within the implementation of Aura.

Structs

• AuraVerifier
  A verifier for Aura blocks.
• BuildAuraWorkerParams
  Parameters of build_aura_worker.
• BuildVerifierParams
  Parameters of build_verifier.
• ImportQueueParams
  Parameters of import_queue.
• InherentDataProvider
  Provides the slot duration inherent data for Aura.
• SlotDuration
  A slot duration defined in milliseconds.
• SlotProportion
  A unit type wrapper to express the proportion of a slot.
• StartAuraParams
  Parameters of start_aura.

Enums

• CheckForEquivocation
  Should we check for equivocation of a block author?
• CompatibilityMode
  Run AURA in a compatibility mode.
• ConsensusLog
  An consensus log item for Aura.
• Error
  Aura Errors

Constants

• AURA_ENGINE_ID
  The ConsensusEngineId of AuRa.
• INHERENT_IDENTIFIER
  The Aura inherent identifier.

Traits

• AuraApi
  API necessary for block authorship with aura.
• CompatibleDigestItem
  A digest item which is usable with aura consensus.
• SyncOracle
  An oracle for when major synchronization work is being undertaken.

Functions

• build_aura_worker
  Build the aura worker.
• build_verifier
  Build the AuraVerifier
• import_queue
  Start an import queue for the Aura consensus algorithm.
• start_aura
  Start the aura worker. The returned future should be run in a futures executor.

Type Definitions

• AuraInherent
  The type of the Aura inherent.