/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { NotifyUnsubscribeLiteCommand } from '../../proto/apache/rocketmq/v2/service_pb';
import { Resource } from '../route';
import { LitePushConsumerImpl } from './LitePushConsumerImpl';
import { OffsetOption } from './OffsetOption';
/**
 * Manages lite topic subscriptions for LitePushConsumer.
 *
 * <p>LiteSubscriptionManager handles:
 * - Maintaining the set of subscribed lite topics
 * - Periodic synchronization of lite subscriptions with server
 * - Quota management and verification
 * - Handling unsubscribe commands from server</p>
 */
export declare class LiteSubscriptionManager {
    private readonly consumerImpl;
    private readonly bindTopic;
    private readonly group;
    private readonly liteTopicSet;
    private liteSubscriptionQuota;
    private maxLiteTopicSize;
    private syncTimer?;
    constructor(consumerImpl: LitePushConsumerImpl, bindTopic: Resource, group: Resource);
    /**
     * Start periodic sync of lite subscriptions.
     */
    startUp(): void;
    /**
     * Stop the sync timer.
     */
    shutdown(): void;
    /**
     * Get the bind topic name.
     */
    getBindTopicName(): string;
    /**
     * Get the consumer group name.
     */
    getConsumerGroupName(): string;
    /**
     * Get a copy of the lite topic set.
     */
    getLiteTopicSet(): Set<string>;
    /**
     * Sync settings from server.
     */
    sync(settings: any): void;
    /**
     * Subscribe to a lite topic.
     */
    subscribeLite(liteTopic: string, offsetOption?: OffsetOption | null): Promise<void>;
    /**
     * Unsubscribe from a lite topic.
     */
    unsubscribeLite(liteTopic: string): Promise<void>;
    /**
     * Periodic sync of all lite subscriptions.
     */
    private syncAllLiteSubscription;
    /**
     * Sync lite subscription with server.
     */
    private syncLiteSubscription;
    /**
     * Handle notify unsubscribe lite command from server.
     */
    onNotifyUnsubscribeLiteCommand(command: NotifyUnsubscribeLiteCommand): void;
    /**
     * Validate lite topic name.
     */
    private validateLiteTopic;
    /**
     * Check lite subscription quota.
     */
    private checkLiteSubscriptionQuota;
    /**
     * Returns a string representation of this LiteSubscriptionManager.
     *
     * @return String representation
     */
    toString(): string;
}