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TreeTruncationFacts

pepper_sync::sync::truncate

Struct TreeTruncationFacts 

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pub struct TreeTruncationFacts {
    pub checkpoint_at_target: Option<BlockHeight>,
    pub newest_checkpoint: Option<BlockHeight>,
}
Expand description

What the planner reads of one shard tree, gathered at the truncation target.

A checkpoint records every scanned chain state the tree has absorbed (frontier insertion and scanned-subtree insertion attach checkpoints), so the newest checkpoint bounds the scanned state. Server-fetched subtree roots are the exception: they enter the store with no checkpoint, so this planner cannot see them. They are kept safe by a different mechanism: each sync session refetches the newest still-bare root and replaces it if the chain moved (see crate::witness::subtree_fetch_start_index), so a stale bare root surviving an Untouched verdict is healed at the next session.

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§checkpoint_at_target: Option<BlockHeight>

The checkpoint the tree’s store holds exactly at the truncation target, if any.

§newest_checkpoint: Option<BlockHeight>

The newest checkpoint id the store holds, if any.

Trait Implementations§

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impl Clone for TreeTruncationFacts

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for TreeTruncationFacts

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impl Debug for TreeTruncationFacts

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Eq for TreeTruncationFacts

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impl PartialEq for TreeTruncationFacts

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for TreeTruncationFacts

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