Lambda download file from s3 python

Create necessary sub directories to avoid file replacements if there are one or more files existing in different sub buckets. Then download the file actually. You cannot download folder from S3 using Boto3 using a clean implementation. Instead you can download all files from a directory using the previous section. Its the clean implementation. Refer the tutorial to learn How to Run Python File in terminal. Save my name, email, and website in this browser for the next time I comment.

Click Add button to add the trigger. Here, we will use the online editor to add our code and use nodejs as the runtime environment. Note that the event param has the details of the S3event.

We have consoled the bucket name and the file name which will get logged when you upload image in S3bucket.

Now, let us save the changes and test the lambda function with S3upload. Now, save the Lambda function. Open S3 from Amazon services and open the bucket we created earlier namely workingwithlambdaands3.

When the lambda executes, it times out after printing I have started downloading.. Doing all the things above didn't help. Please let me know how to solve this problem or if there is any other thing that I need to check. The issue is the lambda function cannot reach the pubic internet, and this cannot reach the S3 API endpoint.

Most likely the Nat Gateway does not reside in a public subnet, meaning the nat gateway is not in a subnet with an internet gateway as the default route. To fix this, built a nat gateway in a public subnet, and use this as the default route for the lambda function or add a VPC Endpoint for S3. Use this VPCE as the next route in the route table for the subnet containing the lambda function.

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