Struct sc_finality_grandpa::BeforeBestBlockBy
source · pub struct BeforeBestBlockBy<N>(pub N);Expand description
A custom voting rule that guarantees that our vote is always behind the best block by at least N blocks, unless the base number is < N blocks behind the best, in which case it votes for the base.
In the best case our vote is exactly N blocks behind the best block, but if there is a scenario where either >34% of validators run without this rule or the fork-choice rule can prioritize shorter chains over longer ones, the vote may be closer to the best block than N.
Tuple Fields§
§0: NTrait Implementations§
source§impl<N: Clone> Clone for BeforeBestBlockBy<N>
impl<N: Clone> Clone for BeforeBestBlockBy<N>
source§fn clone(&self) -> BeforeBestBlockBy<N>
fn clone(&self) -> BeforeBestBlockBy<N>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moresource§impl<Block, B> VotingRule<Block, B> for BeforeBestBlockBy<NumberFor<Block>>where
Block: BlockT,
B: HeaderBackend<Block>,
impl<Block, B> VotingRule<Block, B> for BeforeBestBlockBy<NumberFor<Block>>where Block: BlockT, B: HeaderBackend<Block>,
source§fn restrict_vote(
&self,
backend: Arc<B>,
base: &Block::Header,
best_target: &Block::Header,
current_target: &Block::Header
) -> VotingRuleResult<Block>
fn restrict_vote( &self, backend: Arc<B>, base: &Block::Header, best_target: &Block::Header, current_target: &Block::Header ) -> VotingRuleResult<Block>
Restrict the given
current_target vote, returning the block hash and
number of the block to vote on, and None in case the vote should not
be restricted. base is the block that we’re basing our votes on in
order to pick our target (e.g. last round estimate), and best_target
is the initial best vote target before any vote rules were applied. When
applying multiple VotingRules both base and best_target should
remain unchanged. Read moreAuto Trait Implementations§
impl<N> RefUnwindSafe for BeforeBestBlockBy<N>where N: RefUnwindSafe,
impl<N> Send for BeforeBestBlockBy<N>where N: Send,
impl<N> Sync for BeforeBestBlockBy<N>where N: Sync,
impl<N> Unpin for BeforeBestBlockBy<N>where N: Unpin,
impl<N> UnwindSafe for BeforeBestBlockBy<N>where N: UnwindSafe,
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