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slots: incrementally backoff claiming slots if finality lags behind (#7186)

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* babe: backoff authoring blocks when finality lags

* babe: move backoff authoring params to default constructor

* babe: deduplicate the test a bit

* babe: set backoff constants in service

* babe: use better names for backoff authoring block parameters

* babe: remove last unwrap

* babe: slight style tweak

* babe: fix comment

* slots: move backoff block authorship logic to SimpleSlotWorker

* aura: append SlotInfo in on_slot

* slots: use the correct types for parameters

* slots: fix review comments

* aura: add missing backoff authoring blocks parameters

* slots: add comments for default values

* slots: add additional checks in test

* slots: update implementation for new master

* slots: revert the change to SlotInfo

* Fix review comments

* slots: rework unit tests for backing off claiming slots

* slots: add test for asymptotic behaviour for slot claims

* slots: address review comments

* slots: add test for max_interval

* slots: add assertion for intervals between between claimed slots

* slots: remove rustfmt directive

* slots: another attempt at explaining authoring_rate

* slots: up unfinalized_slack to 50 by default

* slots: add tests for time to reach max_interval

* slots: fix typo in comments

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* slots: additional tweaks to comments and info calls

* slots: rename to BackoffAuthoringOnFinalizedHeadLagging

* slots: make the backing off strategy generic

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* slots: implement backoff trait for () for simplicity

* slots: move logging inside backing off function to make it more specific

* aura: add missing function parameter

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Jon Häggblad
2020-11-11 14:29:19 +01:00
committed by GitHub
parent 48a84f90b5
commit 7cf78c166e
9 changed files with 541 additions and 21 deletions
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substrate/client/consensus/babe/src/tests.rs
+2
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@@ -33,6 +33,7 @@ use sp_consensus_babe::{
make_transcript,
make_transcript_data,
};
use sc_consensus_slots::BackoffAuthoringOnFinalizedHeadLagging;
use sc_block_builder::{BlockBuilder, BlockBuilderProvider};
use sp_consensus::{
NoNetwork as DummyOracle, Proposal, RecordProof, AlwaysCanAuthor,
@@ -434,6 +435,7 @@ fn run_one_test(
sync_oracle: DummyOracle,
inherent_data_providers: data.inherent_data_providers.clone(),
force_authoring: false,
backoff_authoring_blocks: Some(BackoffAuthoringOnFinalizedHeadLagging::default()),
babe_link: data.link.clone(),
keystore,
can_author_with: sp_consensus::AlwaysCanAuthor,