import * as Koa from 'koa';
import { WSParam } from './../meta/param';
import { HTTPPlugin } from './../plugin';
export declare type WSContext = Koa.Context;
export declare abstract class WSTransactable {
    constructor();
    abstract transaction(ctx: WSContext, meta: WSParam, plugin: HTTPPlugin): Promise<any>;
    commit(): Promise<void>;
    rollback(): Promise<void>;
    release(): Promise<void>;
}