Aaron VanSledright

Author: Aaron VanSledright

  • Security Group ID Finder

    Security Group ID Finder

    I have been working on deploying resources to a lot of AWS accounts lately where each account has the same network infrastructure. When deploying Lambdas, I had the common name of the security group but not the ID. I wrote this utility to get the security group ID for me quickly. This is a simple…

  • A Dynamo Data Migration Tool

    A Dynamo Data Migration Tool

    Have you ever wanted to migrate data from one Dynamo DB table to another? I haven’t seen an AWS tool to do this so I wrote one using Python. The process is pretty simple. First, we get all of our data from our source table. We store this in a list. Next, we iterate over…

  • Querying and Editing a Single Dynamo Object

    I have a workflow that creates a record inside of a DynamoDB table as part of a pipeline within AWS. The record has a primary key of the Code Pipeline job. Later in the pipeline I wanted to edit that object to append the status of resources created by this pipeline. In order to do…

  • Searching S3 Buckets for an Object

    I wrote this code for a project that I was working on for a client. The goal was to look in an S3 bucket to find objects that match a specific identification number. Specifically, they are looking to return audio logs from calls in an AWS Connect instance. In this script, we are utilizing Boto3…

  • Subscribing All SES Identities to an SNS Topic

    I recently ran across an issue where I was experiencing many bounced emails on my Amazon SES account. So much so that Amazon reached out and put me on a warning notice. I realized that I had no logging in place to handle this. In order to create a logging mechanism I decided to send…

  • Building Dynamic DNS with Route53 and PFSense

    I use PFSense as my home router, firewall, VPN and much more. I’m sure a lot of my readers do as well. One thing that I have always set up is an entry in Route53 that points to my public IP address on my PFSense box. However, I use Comcast so, my IP address is…

  • Setting the Starting Directory for Windows Subsystem for Linux

    I use Windows Subsystem for Linux almost every day. I run Ubuntu 20.04 for almost all of my development work. I recently re-installed Windows because I upgraded my PC after many years. One thing that has always bothered me is that when you launch WSL for the first time it doesn’t put you into your…

  • 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…

  • Concatenating Multi-Sheet Excel Files with Python

    I recently came across a data source that used multi-sheets within an Excel file. My dashboard cannot read a multi-sheet Excel file so I needed to combine them into one sheet. The file is being uploaded into an S3 bucket and then needs to move through the data lake to be read into the dashboard.…

  • A File Management Architecture

    A File Management Architecture

    This post is a continuation of my article: “A File Extraction Project”. This project has been a great learning experience for both frontend and backend application architecture and design. Below you will find a diagram and an explanation of all the pieces that make this work. The entire architecture is powered by Flask on an…