/// <reference types="node" />
import type { LogLevelEnum } from './loggerTypes';
import type { IObjectStorage } from '../core/storage/objectStorage';
import type { Readable as ReadableStream } from 'stream';
export interface ObjectMetadata {
    [key: string]: any;
}
export declare type ObjectItem = {
    name: string;
    lastModified: string;
};
export declare type ObjectData = string | Buffer | ReadableStream;
export declare enum StorageType {
    OSS = "oss",
    SUANPAN = "suanpan",
    MINIO = "minio"
}
export interface StoragePathOptions {
    userId?: string;
    appId?: string;
    nodeId?: string;
    componentId?: string;
}
export declare type StsToken = {
    Credentials: {
        AccessKeyId: string;
        AccessKeySecret: string;
        SecurityToken: string;
        Expiration?: string;
    };
    bucket: string;
    region: string;
};
export interface OSSConfig {
    bucket: string;
    accessKey: string;
    accessSecret: string;
}
export interface MinioConfig extends OSSConfig {
    host: string;
    port: number;
    useSSL: boolean;
}
export interface AliOSSConfig extends OSSConfig {
    endpoint: string;
    securityToken?: string;
}
export declare type StorageConfig = MinioConfig | AliOSSConfig;
export interface IStorageConfig {
    type: 'oss' | 'minio';
    config: StorageConfig;
}
export interface FlushOptions {
    /**
     * 最大条目书，等于 maxItems 时触发 flush。默认值为 1
     */
    maxItems?: number;
    /**
     * flush 间隔，单位 ms
     */
    flushInterval?: number;
}
export interface StorageLoggerOptions extends FlushOptions {
    /**
     * 可选。默认 false，不开启
     */
    console?: boolean;
    /**
     * 可选。默认 LogLevelEnum.DEBUG
     */
    level?: LogLevelEnum;
    /**
     * 可选。默认 IObjectStorage 的连接信息来自算盘环境
     */
    storage?: IObjectStorage;
    /**
     * TODO: unsupport
     */
    maxClearLength?: number;
    context: {
        userId: string;
        appId: string;
        nodeId: string;
    };
}