import { ExternalBrokerClient } from "ziron-server";
import StateClient from "../StateClient";
import BrokerClientPool from "./BrokerClientPool";
import EventEmitter from "emitix";
import { InternalBroker } from "ziron-server";
type LocalEventEmitter = EventEmitter<{
    'brokerClientPoolsUpdate': [];
    'error': [Error];
}>;
export default class BrokerClusterClient implements ExternalBrokerClient {
    private _brokerUris;
    private _brokerClientMap;
    private readonly _stateClient;
    private readonly _internalBroker;
    private readonly _mapper;
    private readonly _joinTokenSecret;
    private readonly _maxClientPoolSize;
    private readonly _localEmitter;
    readonly once: LocalEventEmitter['once'];
    readonly on: LocalEventEmitter['on'];
    readonly off: LocalEventEmitter['off'];
    private readonly _emit;
    constructor(stateClient: StateClient, internalBroker: InternalBroker, options: {
        joinTokenSecret: string;
        maxClientPoolSize: number;
    });
    /**
     * @description
     * Returns all broker client pools.
     * Important: do not use any destroyed client pool
     * (can be checked with the destroyed property); otherwise, you risk a memory leak.
     */
    get brokerClients(): BrokerClientPool[];
    private _setBrokerUris;
    private _processClientPoolPublishEvent;
    private _handleClientPoolError;
    private static _getClientPoolSize;
    getCurrentSubscriptions(includePending?: boolean): string[];
    private updateToBrokerUris;
    private _getMappedSubscriptions;
    private _selectBrokerFromChannel;
    private _selectClientPoolFromChannel;
    private _tryWaitForClientPoolsUpdate;
    publish(channel: string, data: any, processComplexTypes: boolean): void;
    subscribe(channel: string): void;
    unsubscribe(channel: string): void;
    /**
     * [Use this method only when you know what you do.]
     */
    terminate(): void;
}
export {};