Struct DeltaStore 

pub struct DeltaStore { /* private fields */ }

redb-backed store for delta blobs keyed by sequence number.

The store is policy-free and gap-tolerant: it persists and retrieves deltas without enforcing continuity. Staleness and correctness gates live at consumer boundaries.

Implementations

impl DeltaStore

pub fn open(path: impl AsRef<Path>) -> Result<Self, BootnodeError>

Open or create the delta store at path.

pub fn put(&self, seq: u64, entry: &DeltaEntry) -> Result<(), BootnodeError>

Persist a delta. Overwrites any existing entry at the same seq.

Accepts any sequence number without requiring predecessors — gaps are a normal post-recovery state per §S.19.

pub fn put_batch<'a>( &self, entries: impl IntoIterator<Item = (u64, &'a DeltaEntry)>, ) -> Result<(), BootnodeError>

Persist multiple deltas in a single write transaction.

pub fn get(&self, seq: u64) -> Result<Option<DeltaEntry>, BootnodeError>

Retrieve the delta at exactly seq, if any.

pub fn fetch_range( &self, from_seq: u64, to_seq: u64, ) -> Result<Vec<(u64, DeltaEntry)>, BootnodeError>

Return all deltas with sequence numbers in [from_seq, to_seq) that exist in the store, in ascending sequence order.

Gaps are signalled by missing sequence numbers in the result — the consumer detects them, not the store.

Returns BootnodeError::FetchRangeTooLarge if to_seq - from_seq exceeds MAX_FETCH_RANGE_LEN.

Trait Implementations

impl Debug for DeltaStore

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

Formats the value using the given formatter.