FinalityEngine in substrate relay #1374
Merged
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extracted from #1372
Since we'll have two finality "engines" now (GRANDPA and BEEFY), I've introduced
FinalityEngine
trait in this PR. This would allow us to reuse existing finality relay code for both GRANDPA and BEEFY.Beefy
engine will be added in #1372Important note - there's actually no new code in this PR. It is just about moving code around + adding generic/associated
Engine
argument to some structs.