/**
 * LMDB implementation of SlashingProtectionDatabase
 *
 * Provides local (single-node) double-signing protection using LMDB as the backend.
 * Suitable for nodes that do NOT run in a high-availability multi-node setup.
 *
 * The LMDB store is single-writer, making setIfNotExists inherently atomic.
 * This means we get crash-restart protection without needing an external database.
 */
import { SlotNumber } from '@aztec/foundation/branded-types';
import { EthAddress } from '@aztec/foundation/eth-address';
import type { DateProvider } from '@aztec/foundation/timer';
import type { AztecAsyncKVStore } from '@aztec/kv-store';
import type { SlashingProtectionDatabase, TryInsertOrGetResult } from '../types.js';
import { type CheckAndRecordParams, DutyType } from './types.js';
/**
 * Migrates local slashing-protection duties from schema 1 to schema 2.
 */
export declare function migrateLmdbSlashingProtectionDatabase(dataDirectory: string, currentVersion: number, latestVersion: number, dbMapSizeKb?: number): Promise<void>;
/**
 * LMDB-backed implementation of SlashingProtectionDatabase.
 *
 * Provides single-node double-signing protection that survives crashes and restarts.
 * Does not provide cross-node coordination (that requires the PostgreSQL implementation).
 */
export declare class LmdbSlashingProtectionDatabase implements SlashingProtectionDatabase {
    private readonly store;
    private readonly dateProvider;
    static readonly SCHEMA_VERSION = 2;
    private readonly duties;
    private readonly log;
    constructor(store: AztecAsyncKVStore, dateProvider: DateProvider);
    /**
     * Atomically try to insert a new duty record, or get the existing one if present.
     *
     * LMDB is single-writer so the read-then-write inside transactionAsync is naturally atomic.
     */
    tryInsertOrGetExisting(params: CheckAndRecordParams): Promise<TryInsertOrGetResult>;
    /**
     * Update a duty to 'signed' status with the signature.
     * Only succeeds if the lockToken matches.
     */
    updateDutySigned(rollupAddress: EthAddress, validatorAddress: EthAddress, slot: SlotNumber, dutyType: DutyType, signature: string, lockToken: string, blockIndexWithinCheckpoint: number): Promise<boolean>;
    /**
     * Delete a duty record.
     * Only succeeds if the lockToken matches.
     */
    deleteDuty(rollupAddress: EthAddress, validatorAddress: EthAddress, slot: SlotNumber, dutyType: DutyType, lockToken: string, blockIndexWithinCheckpoint: number): Promise<boolean>;
    /**
     * Cleanup own stuck duties (SIGNING status older than maxAgeMs).
     */
    cleanupOwnStuckDuties(nodeId: string, maxAgeMs: number): Promise<number>;
    /**
     * Cleanup duties with outdated rollup address.
     *
     * This is always a no-op for the LMDB implementation: the underlying store is created via
     * DatabaseVersionManager (in factory.ts), which already resets the entire data directory at
     * startup whenever the rollup address changes.
     */
    cleanupOutdatedRollupDuties(_currentRollupAddress: EthAddress): Promise<number>;
    /**
     * Cleanup old signed duties older than maxAgeMs.
     */
    cleanupOldDuties(maxAgeMs: number): Promise<number>;
    /**
     * Close the underlying LMDB store.
     */
    close(): Promise<void>;
}
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