s3 to ftp server without downloading to ec2

问题

Is there is way (programmatically) to transfer file from s3 bucket to an external ftp server without downloading it to an ec2 instance ?

More details:

1. I have a Django server running on EC2 which serves an angular web app.

2. User uploads a file to S3 bucket using my web app and once the upload is complete the web app sends a POST request containing the file object s3 url.

3. The Django server upon receiving the POST request may need to copy the file (uploaded to s3) to an external ftp server. The target ftp server may be different depending upon the user who uploaded the file (each user group may have her own ftp server).

4. I understand that upon receiving POST request, Django server can download the file from s3 and then upload it to the appropriate target ftp server.

My question is: Can I reduce overhead on my EC2 instance in step 4 by somehow initiating a transfer from s3 to the target ftp server and get a callback/notification when that transfer completes (success or error).

Thanks.

回答1:

You can create a lambda function to do the same.

A complete reference of the implementation is discussed here.

https://pythonvibes.wordpress.com/2016/12/09/ftp-and-sftp-through-lambda/

Hope it helps.

来源：https://stackoverflow.com/questions/48308380/s3-to-ftp-server-without-downloading-to-ec2