Crate sc_consensus_slots

Slots functionality for Substrate.

Some consensus algorithms have a concept of slots, which are intervals in time during which certain events can and/or must occur. This crate provides generic functionality for slots.

Structs

BackoffAuthoringOnFinalizedHeadLagging	A simple default strategy for how to decide backing off authoring blocks if the number of unfinalized blocks grows too large.
SlotDuration	A slot duration. Create with get_or_compute.
SlotInfo	Information about a slot.
SlotResult	The result of SlotWorker::on_slot.

Enums

CheckedHeader	A header which has been checked
Error

Constants

MAX_SLOT_CAPACITY	We keep at least this number of slots in database.
PRUNING_BOUND	We prune slots when they reach this number.

Traits

BackoffAuthoringBlocksStrategy	Trait for providing the strategy for when to backoff block authoring.
SimpleSlotWorker	A skeleton implementation for SlotWorker which tries to claim a slot at its beginning and tries to produce a block if successfully claimed, timing out if block production takes too long.
SlotCompatible	Slot compatible inherent data.
SlotWorker	A worker that should be invoked at every new slot.

Functions

check_equivocation	Checks if the header is an equivocation and returns the proof in that case.
slot_lenience_exponential	Calculate a slot duration lenience based on the number of missed slots from current to parent. If the number of skipped slots is greated than 0 this method will apply an exponential backoff of at most 2^7 * slot_duration, if no slots were skipped this method will return None.
slot_lenience_linear	Calculate a slot duration lenience based on the number of missed slots from current to parent. If the number of skipped slots is greated than 0 this method will apply a linear backoff of at most 20 * slot_duration, if no slots were skipped this method will return None.
start_slot_worker	Start a new slot worker.

Type Definitions

StorageChanges

The changes that need to applied to the storage to create the state for a block.