How to download an file from s3 lambda

Find centralized, trusted content and collaborate around the technologies you use most. Connect and share knowledge within a single location that is structured and easy to search. There is a web service that pushes s3 metadata key, bucket to SQS. I have a lambda that downloads the file and pushes its contents to elasticsearch. Here is my code:. 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. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Downloading files from s3 in Lambda Ask Question. Asked 2 years, 7 months ago. Active 2 years, 7 months ago. Viewed 7k times. I am trying to download files from s3 in AWS lambda.

Lambda is inside a vpc which has a NAT Gateway configured. Lambda has permission to access s3. The s3 bucket from which I am downloading the file is in different region than the lambda.

However I don't think this should cause any issue. Amazon S3 service is used for file storage, where you can upload or remove files. The handler has the details of the events. Let us see these steps with the help of an example which shows the basic interaction between Amazon S3 and AWS Lambda. Once the file is uploaded, it will trigger AWS Lambda function in the background which will display an output in the form of a console message that the file is uploaded. Enter the details Bucket name, Select the Region and click Create button at the bottom left side.

Thus, we have created bucket with name : workingwithlambdaands3. Now, click Create role and choose the services that will use this role. Select Lambda and click Permission button. Now, enter the Role name, Role description and click Create Role button at the bottom. In this section, let us see how to create a Lambda function and add a S3 trigger to it.

Click Lambda and follow the process for adding Name. Choose the Runtime, Role etc. You can add Prefix and File pattern which are used to filter the files added. For Example, to trigger lambda only for.