将新的 object 上传到 S3 存储桶时，使用 Lambda 生成 presignedURL

Question

i searched everywhere but i cannot find a script which allows lambda to generate a presigned url when i upload a new object to an s3 bucket. Thanks!

Answer 1

I don't think you'll find an already-made solution online, but the following workflow should work:

• Catch the S3 upload event using S3 notifications and trigger a Lambda.
• Make the Lambda retrieve the name of the objects and creates a pre-signed URL.
• Upload this URL to a DynamoDB table (or anything else which fits your use-case. SSM Parameter Store for example).

Make sure your Lambda has all the correct rights, and pay attention to the fact S3 pre-signed URL generated with SDK have a expiration date of 7 days max .