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Bastian Köcher
05af334bbc
* Make consensus `SlotWorker` don't assume a slot is time / duration This removes the last bit of assumption that a slot is always `time / duration`. This will be required by parachains where a slot will be the relay chain block number. Besides this there are also some other drive by changes. One more notable is that `on_slot` now returns a `SlotResult` that holds the block and a potential storage proof. To simplify the implementation and usage of the `SimpleSlotWorker` the `SlotWorker` trait is now implemented for each type that implements `SimpleSlotWorker`. * Update client/consensus/slots/src/lib.rs Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com> * Update client/consensus/slots/src/lib.rs Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com> Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
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.
License: GPL-3.0-or-later WITH Classpath-exception-2.0