使用nodeJS 14通过lambda将大尺寸图像文件从S3上传到云应用程序

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

const s3 = new AWS.S3({
  accessKeyId: 'YOUR_ACCESS_KEY',
  secretAccessKey: 'YOUR_SECRET_ACCESS_KEY',
  region: 'YOUR_REGION'
});

const downloadImage = async (bucketName, key) => {
  const params = {
    Bucket: bucketName,
    Key: key
  };

  try {
    const data = await s3.getObject(params).promise();
    // 在这里可以对下载的图像文件进行处理或其他操作
    console.log('图像文件下载成功');
    return data.Body;
  } catch (error) {
    console.log('图像文件下载失败', error);
    throw error;
  }
};

const uploadImageToCloudApp = async (imageData) => {
  // 在这里可以将图像文件上传到云应用程序
  console.log('图像文件上传成功');
};

exports.handler = async (event) => {
  const bucketName = event.Records[0].s3.bucket.name;
  const key = event.Records[0].s3.object.key;

  try {
    const imageData = await downloadImage(bucketName, key);
    await uploadImageToCloudApp(imageData);
    return '图像文件处理完成';
  } catch (error) {
    console.log('处理图像文件时出错', error);
    throw error;
  }
};