zaccharles / cloudfront-passthrough-s3-signed-url

CloudFront Passthrough S3 Signed URL

1. Create a new CloudFormation stack using cloudformation.template.
2. Upload example-s3-object.json to the S3 bucket (link in "Resources" tab of CloudFormation stack).
3. Go to Lambda console for function (again, link in "Resources" tab of CloudFormation stack).
4. Invoke Lambda function with test event containing lambda-test-event.json.
5. Output contains a S3 signed URL in the s3 and its CloudFront equivalent in the cf property.
6. Use a browser or something like Postman to GET the cf URL.
7. Confirm the response was compressed by checking the Content-Encoding header for gzip or br.

Notes:

• The S3 object can be accessed directly from the bucket using the s3 URL.
• There is no way to determine the s3 URL from the cf URL.
• CloudFront only compresses files with a Content-Type header value listed here.
• CloudFront only compresses files that are between 1,000 bytes and 10,000,000 bytes in size.
• Read Serving compressed files for more information.