@lodestar/beacon-node/lib/chain/stateCache/datastore/db.d.ts

A Typescript implementation of the beacon chain

import { phase0 } from "@lodestar/types";
import { IBeaconDb } from "../../../db/interface.js";
import { CPStateDatastore, DatastoreKey } from "./types.js";
/**
 * Implementation of CPStateDatastore using db.
 */
export declare class DbCPStateDatastore implements CPStateDatastore {
    private readonly db;
    constructor(db: IBeaconDb);
    write(cpKey: phase0.Checkpoint, stateBytes: Uint8Array): Promise<DatastoreKey>;
    remove(serializedCheckpoint: DatastoreKey): Promise<void>;
    read(serializedCheckpoint: DatastoreKey): Promise<Uint8Array | null>;
    readLatestSafe(): Promise<Uint8Array | null>;
    readKeys(): Promise<DatastoreKey[]>;
}
export declare function datastoreKeyToCheckpoint(key: DatastoreKey): phase0.Checkpoint;
export declare function checkpointToDatastoreKey(cp: phase0.Checkpoint): DatastoreKey;
/**
 * Get the latest safe checkpoint state the node can use to boot from
 *   - it should be the checkpoint state that's unique in its epoch
 *   - its last processed block slot should be at epoch boundary or last slot of previous epoch
 *   - state slot should be at epoch boundary
 *   - state slot should be equal to epoch * SLOTS_PER_EPOCH
 *
 * return the serialized data of Current Root Checkpoint State (CRCS) or Previous Root Checkpoint State (PRCS)
 *
 */
export declare function getLatestSafeDatastoreKey(allKeys: DatastoreKey[], readFn: (key: DatastoreKey) => Promise<Uint8Array | null>): Promise<Uint8Array | null>;
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