import { ObjectStorageObject } from './object-storage-object.entity';
export type DeleteResult = {
    deleted: boolean;
};
export declare class SignedUploadUrl {
    url: string;
    method: string;
    rangeStart: number;
    rangeEnd: number;
    part: number;
}
export declare class Upload {
    uploadId: string;
    parts: SignedUploadUrl[];
}
export declare class SignedUploadUrlResult {
    part: number;
    etag: string;
}
export declare class CompleteUploadRequest {
    uploadId: string;
    parts: SignedUploadUrlResult[];
}
export declare class RefreshSignedUrlsRequest {
    uploadId: string;
    parts: number[];
}
export type ObjectStorageProviderOptions = {
    cdnUrlPrefix: string;
};
export declare abstract class AbstractObjectStorageProvider {
    readonly options: Readonly<ObjectStorageProviderOptions>;
    constructor(options: Readonly<ObjectStorageProviderOptions>);
    abstract createUpload(object: ObjectStorageObject): Promise<Upload>;
    abstract refreshSignedUrls(object: ObjectStorageObject, request: RefreshSignedUrlsRequest): Promise<SignedUploadUrl[]>;
    abstract completeUpload(object: ObjectStorageObject, completion: CompleteUploadRequest): Promise<void>;
    abstract deleteFile(file: string): Promise<DeleteResult>;
    abstract fileExists(file: string): Promise<boolean>;
}