Module slot_worker

Slot worker drives block and vote production based on slots produced in [sc_proof_of_time].

While slot worker uses [sc_consensus_slots], it is not driven by time, but instead by Proof of Time that is produced by PotSourceWorker.

Each time a new proof is found, [PotSlotWorker::on_proof] is called and corresponding [SlotInfo] notification is sent (SubspaceLink::new_slot_notification_stream) to farmers to do the audit and try to prove they have a solution without actually waiting for the response. ChainConstants::block_authoring_delay slots later (when corresponding future proof arrives) all the solutions produced by farmers so far are collected and corresponding block and/or votes are produced. In case PoT chain reorg happens, outdated solutions (they are tied to proofs of time) are thrown away.

Custom SubspaceSyncOracle wrapper is introduced due to Subspace-specific changes comparing to the base Substrate behavior where major syncing is assumed to not happen in case authoring is forced.

Structs

• NewSlotInfo
  Information about new slot that just arrived
• NewSlotNotification
  New slot notification with slot information and sender for solution for the slot.
• RewardSigningNotification
  Notification with a hash that needs to be signed to receive reward and sender for signature.
• SubspaceSlotWorker
  Subspace slot worker responsible for block and vote production
• SubspaceSlotWorkerOptions
  Parameters for SubspaceSlotWorker
• SubspaceSyncOracle
  Subspace sync oracle.