import { VodCheckpointRecord } from "../types";
/**
 * 生成默认 checkpoint 文件路径
 */
export declare function getDefaultCheckpointFilePath(spaceName: string, filePath: string): string;
/**
 * Checkpoint 信息
 */
export interface CheckpointRichInfo {
    filePath?: string;
    record?: VodCheckpointRecord;
}
/**
 * 加载 checkpoint
 */
export declare function loadCheckpoint(checkpoint: string | VodCheckpointRecord | undefined): Promise<CheckpointRichInfo>;
/**
 * 保存 checkpoint
 */
export declare function saveCheckpoint(filePath: string | undefined, record: VodCheckpointRecord): Promise<void>;
/**
 * 删除 checkpoint
 */
export declare function removeCheckpoint(filePath: string | undefined): Promise<void>;
/**
 * 校验 checkpoint 有效性
 */
export declare function validateCheckpoint(record: VodCheckpointRecord | undefined, filePath?: string, fileSize?: number, partSize?: number): Promise<boolean>;