sqs-producer-lib/lib/sqsClient.js

Reusable AWS SQS producer library for Node.js microservices

// src/SQSClient.js
const AWS = require('aws-sdk');

class SQSClient {
  constructor({
    accessKeyId,
    secretAccessKey,
    region = 'us-east-1',
    useLocalstack = false,
    localstackEndpoint = 'http://localhost:4566',
    accountId = '000000000000',
  }) {
    this.isLocal = useLocalstack;
    this.endpoint = useLocalstack
      ? new AWS.Endpoint(localstackEndpoint)
      : undefined;
    this.accountId = accountId;
    this.region = region;

    const config = {
      accessKeyId,
      secretAccessKey,
      region,
      sslEnabled: !useLocalstack,
    };

    this.sqs = new AWS.SQS({
      ...config,
      endpoint: this.endpoint,
      s3ForcePathStyle: true,
      customUserAgent: 'SQSProducerClass',
    });

    console.log('SQS Client Initialized:', {
      region,
      isLocal: this.isLocal,
      endpoint: this.endpoint?.href || 'AWS',
    });
  }

  async sendMessage(queueName, messageObject) {
    const queueUrl = this.isLocal
      ?`http://localstack:4566/000000000000/${queueName}` 
      : `https://sqs.${this.region}.amazonaws.com/${this.accountId}/${queueName}`;

    const params = {
      QueueUrl: queueUrl,
      MessageBody: JSON.stringify(messageObject),
    };

    try {
      const result = await this.sqs.sendMessage(params).promise();
      console.log(` Message sent to ${queueName}:`, result.MessageId);
      return result;
    } catch (err) {
      console.error(`Failed to send message to ${queueName}:`, err.message);
      throw err;
    }
  }
}

module.exports = SQSClient;