When AWS Lambda functions fail with exceptions, you can have alarms setup to let you know. The problem is the Alarms don’t tell you what the error is, just that a Lambda crashed a bunch of times in a short time frame. Is it something you should keep an eye on? Did something catastrophic happen? Is it something you can ignore? Who knows 🤷🏻♂️.
Enter Lambda error parse from CloudWatch filter pattern subscriptions. In this article, we’ll show 2 languages used to do that in a Functional Programming style. Specifically ReScript and Python. While subjective, we’ll do our best to compare and contrast the different approaches. I don’t specifically recommend either language for the task, I just find it interesting to compare and contrast and hope you do too. I’ll cover each function, what it does, and how it fits into the larger whole.
Code – ReScript & Python on GithubContinue reading “Parsing Lambda Error Logs in ReScript & Python”