asksuite-core/services/AWSS3Caller.js

const AWS = require('aws-sdk');
const _ = require('lodash');

class AWSS3Caller {
  constructor(awsConfig) {
    this.otherParams = _.cloneDeep(awsConfig);
  }

  async getObject(bucket, key, options, retries = 0) {
    const defaultOptions = { timeout: 15000, maxRetries: 2 };
    const { timeout, maxRetries } = Object.assign(defaultOptions, options);

    const s3 = new AWS.S3(this.otherParams);
    const getParams = {
      Bucket: bucket,
      Key: key,
    };

    const request = s3.getObject(getParams);
    setTimeout(request.abort.bind(request), timeout);

    return request
      .promise()
      .then(function(data) {
        const body = data.Body.toString('utf-8');
        return JSON.parse(body); // Use the encoding necessary
      })
      .catch(error => {
        const isRetryableError =
          error.code === 'RequestAbortedError' || error.code === 'TimeoutError';

        if (isRetryableError && retries <= maxRetries) {
          return this.getObject(bucket, key, options, retries + 1);
        }

        throw error;
      });
  }
}

module.exports = AWSS3Caller;