Aaron VanSledright

Tag: lambda

  • API For Pre-signed URLs

    Pre-signed URL’s are used for downloading objects from AWS S3 buckets. I’ve used them many times in the past for various reasons but this idea was a new one. A proof of concept for an API that would create the pre-signed URL and return it to the user. This solution utilizes an API Gateway and…

  • Building a Generative AI Workflow with AWS Bedrock

    I’ve finally been tasked with a Generative AI project to work on. I’ve done this workflow manually with ChatGPT in the past and it works quite well but, for this project, the requirement was to use Amazon Web Services’ new product “AWS Bedrock”. The workflow takes in some code and writes a technical document to…

  • Automated Lambda Testing

    Look, I know there are a bunch of test frameworks that you could use for your Lambda functions. But what if you wanted something simple? I spent an afternoon putting together what I would want in a testing pipeline that returns a simple “Success/Fail” type response to me via Email. An architecture diagram for your…

  • SES Monitoring

    I love AWS. But one thing they don’t do is build complete tools. SES is one of them. I recently started getting emails about high usage for one of the identities that I have set up for SES. I would assume that there was a way to track usage within CloudWatch but for the life…

  • Deleting MANY Lambda Function Versions

    I recently came across a challenge where I wanted to purge old Lambda Function versions. Some of the functions had over 65 versions! The code below will iterate through a text file with a Lambda function defined on each line. It will get a list of all the versions and delete any version that is…

  • Moving AWS Cloudfront Logs to DynamoDB

    I think its pretty obvious that I love DynamoDB. It has become one of my favorite AWS Services and I use it almost every day at work and am getting better at using it for my personal projects as well. I had a client approach me about getting logs from a Cloudfront Distribution. Cloudfront has…

  • Updating AWS Managed Prefix Lists

    I was working with a customer the other day trying to come up with a way to import a bunch of IP addresses into a white list on AWS. We came up with the approach of using Managed Prefix Lists in VPC. I wrote some Python in order to grab some code from an API…

  • Automating Security Group Rule Removal

    I’m using an Amazon Web Services Security Group as a way to allow traffic into an EC2 instance for the instance’s users. The users can give themselves access through a web interface that I wrote for them. Maybe I’ll cover that in a different post. I found recently that the Security Group was nearing its…

  • EC2 Reservation Notification

    I realized today that I haven’t updated my EC2 reservations recently. Wondering why I never did this I came to understand that there was no way that I was getting notified that the reservations were expiring. I spent the day putting together a script that would look through my reservations, assess the time of their…

  • Pandas & NumPy with AWS Lambda

    Fun fact: Pandas and NumPy don’t work out of the box with Lambda. The libraries that you might download from your development machine probably won’t work either. The standard Lambda Python environment is very barebones by default. There is no point in loading in a bunch of libraries if they aren’t needed. This is why…