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babe: Introduce secondary slots (Aurababeous) (#3380)

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* babe: initial implementation of secondary slots

* babe: validate secondary slot author

* babe: implement weight based fork choice

* babe: remove unused

* aura: cleanup unused imports

* babe: pass in parent weight when authoring and verifying

* babe: use epoch randomness for picking secondary slot authors

* babe: fix tests

* babe: fix wasm build

* babe: node-side code for disabling secondary slots

* babe: allow enabling/disabling secondary slots from runtime

* babe: fix test

* babe: use blake2_256 for secondary slot assignment

* babe: run block initialization in should_end_session

* node: increase slot duration to 6s

* babe: add docs

* node: bump spec_version

* Apply suggestions from code review

Co-Authored-By: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* babe: simplify secondary slot assignment calculation

* babe: remove unnecessary comment

* node: bump spec_version

* babe: fix bad merge
This commit is contained in:
André Silva
2019-08-16 15:47:53 +02:00
committed by GitHub
parent f735d067c4
commit cb7527d2b2
12 changed files with 720 additions and 202 deletions
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substrate/core/consensus/slots/src/lib.rs
+7 -2
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@@ -84,7 +84,12 @@ pub trait SimpleSlotWorker<B: BlockT> {
fn authorities_len(&self, epoch_data: &Self::EpochData) -> usize;
/// Tries to claim the given slot, returning an object with claim data if successful.
fn claim_slot(&self, slot_number: u64, epoch_data: &Self::EpochData) -> Option<Self::Claim>;
fn claim_slot(
&self,
header: &B::Header,
slot_number: u64,
epoch_data: &Self::EpochData,
) -> Option<Self::Claim>;
/// Return the pre digest data to include in a block authored with the given claim.
fn pre_digest_data(&self, slot_number: u64, claim: &Self::Claim) -> Vec<sr_primitives::DigestItem<B::Hash>>;
@@ -143,7 +148,7 @@ pub trait SimpleSlotWorker<B: BlockT> {
return Box::pin(future::ready(Ok(())));
}
let claim = match self.claim_slot(slot_number, &epoch_data) {
let claim = match self.claim_slot(&chain_head, slot_number, &epoch_data) {
None => return Box::pin(future::ready(Ok(()))),
Some(claim) => claim,
};