/**
 * 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 { ClientType } from '../../proto/apache/rocketmq/v2/definition_pb';
import { AckMessageRequest, ChangeInvisibleDurationRequest, ForwardMessageToDeadLetterQueueRequest, HeartbeatRequest, NotifyClientTerminationRequest, ReceiveMessageRequest } from '../../proto/apache/rocketmq/v2/service_pb';
import { MessageView } from '../message';
import { MessageQueue, TopicRouteData } from '../route';
import { RetryPolicy } from '../retry';
import { Consumer, ConsumerOptions } from './Consumer';
import { FilterExpression } from './FilterExpression';
import { PushSubscriptionSettings } from './PushSubscriptionSettings';
import { ConsumeService } from './ConsumeService';
import { MessageListener } from './MessageListener';
export interface PushConsumerOptions extends ConsumerOptions {
    subscriptions: Map<string, FilterExpression | string>;
    messageListener: MessageListener;
    maxCacheMessageCount?: number;
    maxCacheMessageSizeInBytes?: number;
    longPollingTimeout?: number;
    enableFifoConsumeAccelerator?: boolean;
}
export declare class PushConsumer extends Consumer {
    #private;
    constructor(options: PushConsumerOptions);
    startup(): Promise<void>;
    /**
     * Start assignment scanning. Can be overridden by subclasses.
     */
    protected startAssignmentScanning(): void;
    shutdown(): Promise<void>;
    protected getSettings(): PushSubscriptionSettings;
    /**
     * Get the client type for push consumer.
     *
     * @return The client type identifier
     */
    protected getClientType(): ClientType;
    protected wrapHeartbeatRequest(): HeartbeatRequest;
    protected wrapNotifyClientTerminationRequest(): NotifyClientTerminationRequest;
    protected onTopicRouteDataUpdate(_topic: string, _topicRouteData: TopicRouteData): void;
    protected createConsumeService(): ConsumeService;
    subscribe(topic: string, filterExpression: FilterExpression): Promise<void>;
    unsubscribe(topic: string): void;
    get requestTimeoutValue(): number;
    getPushConsumerSettings(): PushSubscriptionSettings;
    getConsumerGroup(): string;
    getConsumeService(): ConsumeService;
    getRetryPolicy(): RetryPolicy | undefined;
    getClientId(): string;
    getReceptionTimes(): number;
    getReceivedMessagesQuantity(): number;
    getConsumptionOkQuantity(): number;
    getConsumptionErrorQuantity(): number;
    incrementReceptionTimes(): void;
    incrementReceivedMessagesQuantity(count: number): void;
    incrementConsumptionOkQuantity(): void;
    incrementConsumptionErrorQuantity(): void;
    doStats(): void;
    wrapPushReceiveMessageRequest(batchSize: number, mq: MessageQueue, filterExpression: FilterExpression, longPollingTimeout: number, attemptId?: string): ReceiveMessageRequest;
    receiveMessage(request: ReceiveMessageRequest, mq: MessageQueue, awaitDuration: number): Promise<MessageView[]>;
    wrapAckMessageRequest(messageView: MessageView): AckMessageRequest;
    wrapChangeInvisibleDurationRequest(messageView: MessageView, invisibleDuration: number): ChangeInvisibleDurationRequest;
    wrapForwardMessageToDeadLetterQueueRequest(messageView: MessageView): ForwardMessageToDeadLetterQueueRequest;
    getQueueSize(): number;
    cacheMessageBytesThresholdPerQueue(): number;
    cacheMessageCountThresholdPerQueue(): number;
    /**
     * Create a virtual process queue for Lite consumer.
     * Lite consumers use a special message queue with queueId=-1 to receive messages.
     * This method creates the virtual queue and starts fetching messages immediately.
     *
     * @param topic - The bind topic name
     * @param filterExpression - The filter expression for message filtering
     */
    protected createVirtualProcessQueueForLite(topic: string, filterExpression: FilterExpression): void;
}