rocketmq-client-nodejs
Version:
RocketMQ Node.js Client
45 lines (44 loc) • 2.18 kB
TypeScript
/**
* 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 { MessageView } from '../message';
import { FifoConsumeService } from './FifoConsumeService';
import { MessageListener } from './MessageListener';
import type { ProcessQueue } from './ProcessQueue';
/**
* FIFO consume service for lite push consumer.
*
* <p>Similar to {@link FifoConsumeService}, but groups messages by lite topic
* instead of message group. This ensures messages with the same lite topic are
* consumed sequentially, while messages with different lite topics can be
* consumed in parallel when the accelerator is enabled.</p>
*
* <p>When the message listener returns {@link ConsumeResultSuspend}, all
* remaining messages with the same lite topic in the current batch are also
* suspended, while messages with different lite topics continue to be consumed.</p>
*/
export declare class LiteFifoConsumeService extends FifoConsumeService {
#private;
constructor(clientId: string, messageListener: MessageListener, enableFifoConsumeAccelerator?: boolean);
/**
* Use lite topic as the group key for FIFO consumption.
*
* @param messageView - The message view
* @return {string} The lite topic, empty string if not present
*/
protected getMessageGroupKey(messageView: MessageView): string;
protected consumeIteratively(pq: ProcessQueue, messageViews: MessageView[], startIndex: number): Promise<void>;
}