franzwong · June 16, 2019 04:49
diff --git a/index.js b/index.js
 const AWS = require('aws-sdk');
 const s3 = new AWS.S3({apiVersion: '2006-03-01'});

 const uuidv4 = require('uuid/v4');

 const bucketName = process.env.bucketName;
 const kmsKeyId = process.env.kmsKeyId;

 const MAX_FILE_SIZE = 5 * 1024 * 1024;
 const EXPIRATION = 900;
 const OBJECT_ACL = 'bucket-owner-full-control';

 const generateHtml = (presignedPost) => {
  const fields = Object.entries(presignedPost.fields).reduce((accumulator, currentValue) => 
    accumulator + `      <input type="hidden" name="${currentValue[0]}" value="${currentValue[1]}">\n`
    , '');

  return `
 <html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  </head>
  <body>
    <form action="${presignedPost.url}" method="post" enctype="multipart/form-data">
 ${fields}
      <input type="hidden" name="key" value="test-file-upload">
      <div><input type="file" name="file"></div>
      <input type="submit" name="submit" value="Upload" />
    </form>
 </html>
 `; 
 }

 exports.handler = async () => {
  try {
    const objectKey = uuidv4();

    // Make sure IAM role assigned to Lambda has the right to write S3 bucket and KMS key
    const presignedPost = s3.createPresignedPost({
      Bucket: bucketName,
      Conditions: [
        ['content-length-range', 0, MAX_FILE_SIZE],
      ],
      Fields: {
        'acl': OBJECT_ACL,
        'key': objectKey,
        // Server side encryption is optional
        'x-amz-server-side-encryption': 'aws:kms',
        'x-amz-server-side-encryption-aws-kms-key-id': kmsKeyId,
      },
      Expires: EXPIRATION
    });

    // Generate HTML can even be used in local machine
    return generateHtml(presignedPost);
  } catch (err) {
    console.error(`Error: ${err}`);
    throw err;
  }
 };
	const AWS = require('aws-sdk');
	const s3 = new AWS.S3({apiVersion: '2006-03-01'});

	const uuidv4 = require('uuid/v4');

	const bucketName = process.env.bucketName;
	const kmsKeyId = process.env.kmsKeyId;

	const MAX_FILE_SIZE = 5 * 1024 * 1024;
	const EXPIRATION = 900;
	const OBJECT_ACL = 'bucket-owner-full-control';

	const generateHtml = (presignedPost) => {
	const fields = Object.entries(presignedPost.fields).reduce((accumulator, currentValue) =>
	accumulator + ` <input type="hidden" name="${currentValue[0]}" value="${currentValue[1]}">\n`
	, '');

	return `
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	</head>
	<body>
	<form action="${presignedPost.url}" method="post" enctype="multipart/form-data">
	${fields}
	<input type="hidden" name="key" value="test-file-upload">
	<div><input type="file" name="file"></div>
	<input type="submit" name="submit" value="Upload" />
	</form>
	</html>
	`;
	}

	exports.handler = async () => {
	try {
	const objectKey = uuidv4();

	// Make sure IAM role assigned to Lambda has the right to write S3 bucket and KMS key
	const presignedPost = s3.createPresignedPost({
	Bucket: bucketName,
	Conditions: [
	['content-length-range', 0, MAX_FILE_SIZE],
	],
	Fields: {
	'acl': OBJECT_ACL,
	'key': objectKey,
	// Server side encryption is optional
	'x-amz-server-side-encryption': 'aws:kms',
	'x-amz-server-side-encryption-aws-kms-key-id': kmsKeyId,
	},
	Expires: EXPIRATION
	});

	// Generate HTML can even be used in local machine
	return generateHtml(presignedPost);
	} catch (err) {
	console.error(`Error: ${err}`);
	throw err;
	}
	};