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Follower

espresso_node::follower

Struct Follower 

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struct Follower<P> {
    source: Arc<dyn ChainSource>,
    sink: Arc<dyn DecideSink>,
    persistence: Arc<P>,
    coordinator: EpochMembershipCoordinator<SeqTypes>,
    state_catchup: Arc<dyn StateCatchup>,
    decided: Sender<Option<LeafQueryData<SeqTypes>>>,
    chain_config: Arc<RwLock<ChainConfig>>,
    upgrade_lock: UpgradeLock<SeqTypes>,
    epoch_height: u64,
    options: FollowerOptions,
    bootstrap_epoch_catchup_timeout: Duration,
    next: u64,
}

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§source: Arc<dyn ChainSource>§sink: Arc<dyn DecideSink>§persistence: Arc<P>§coordinator: EpochMembershipCoordinator<SeqTypes>§state_catchup: Arc<dyn StateCatchup>§decided: Sender<Option<LeafQueryData<SeqTypes>>>§chain_config: Arc<RwLock<ChainConfig>>§upgrade_lock: UpgradeLock<SeqTypes>§epoch_height: u64§options: FollowerOptions§bootstrap_epoch_catchup_timeout: Duration§next: u64

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impl<P: SequencerPersistence> Follower<P>

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async fn run(self)

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async fn poll(&mut self) -> Result<()>

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async fn follow(&self, block: VerifiedBlock) -> Result<()>

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async fn track_upgrade(&self, leaf: &Leaf2)

As a validator does on decide, so the API validates state certificates against the version the network runs.

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async fn track_epoch(&self, leaf: &Leaf2) -> Result<()>

Awaited, so the transition block finds the stake table it supplies a DRB for, and a failed derivation fails the block and is retried with it. Nothing is redone when the membership already knows the result, as after a restart or a catchup walk.

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async fn catch_up_skipped_epochs(&self, skipped: Range<u64>) -> Result<()>

Skipping an epoch root skips the stake table it derives, which later roots build on. DRBs the skipped transition blocks carried are left to the coordinator, which fetches them on demand.

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fn has_stake_table(&self, epoch: EpochNumber) -> bool

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fn has_drb(&self, epoch: EpochNumber) -> bool

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async fn track_chain_config(&self, header: &Header)

Keep the resolved chain config current, so submit enforces the right block size.

Auto Trait Implementations§

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impl<P> !RefUnwindSafe for Follower<P>

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impl<P> !UnwindSafe for Follower<P>

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impl<P> Freeze for Follower<P>

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impl<P> Send for Follower<P>
where P: Sync + Send,

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impl<P> Sync for Follower<P>
where P: Sync + Send,

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impl<P> Unpin for Follower<P>

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impl<P> UnsafeUnpin for Follower<P>

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