Method checkpoint_to_bytes

nodedb-spatial/src/geohash_index.rs:156–174

Checkpoint: serialize all entries for persistence. When `kek` is `Some`, the msgpack payload is wrapped in an AES-256-GCM encrypted SEGV envelope. When `None`, raw msgpack bytes are returned.

(
        &self,
        kek: Option<&nodedb_wal::crypto::WalEncryptionKey>,
    )

    /// When `kek` is `Some`, the msgpack payload is wrapped in an AES-256-GCM
    /// encrypted SEGV envelope. When `None`, raw msgpack bytes are returned.
    pub fn checkpoint_to_bytes(
        &self,
        kek: Option<&nodedb_wal::crypto::WalEncryptionKey>,
    ) -> Result<Vec<u8>, crate::persist::RTreeCheckpointError> {
        let snap = GeohashSnapshot {
            collection: self.collection.clone(),
            field: self.field.clone(),
            precision: self.precision,
            entries: self.entries.clone(),
        };
        let msgpack = zerompk::to_msgpack_vec(&snap)
            .map_err(crate::persist::RTreeCheckpointError::Serialize)?;

        if let Some(key) = kek {
            return crate::persist::encrypt_geohash_payload(key, &msgpack);
        }

        Ok(msgpack)
    }

    /// Restore from checkpoint.
    ///