I recently implemented a Python script to trigger AWS Lambdas conditionally as part of a Microservices app we built at Qxf2 . I experienced multiple invocations of the lambda issue, which made me go in circles. Hence, I decided to share the thinking behind and the fix. Spoiler: The culprit happened to be a default timeout setting in the boto3 […]
Multiple invocations of lambda – The issue and the fix
LocalStack Issue: Security token included in the request is invalid
While I was engaged in creating tests for our URL Filter Lambda at Qxf2, I encountered a problem related to an invalid security token. You can access the code for our URL Filter on GitHub through the following link here. If you encounter an error message stating “The security token included in the request is invalid” while using LocalStack, it […]
Testing AWS Lambda Functions with Batch Messages
We find most testers just run the most basic tests on Lambdas. One technique that has helped us discover more bugs when testing Lambdas at Qxf2 is to send batch messages to the SQS that triggers the Lambda. Often times, when you (the tester) send batch messages and “something goes wrong”, you need to be able to triage the cause […]
How to use moto with AWS DynamoDB
Do you want to test the function that uses AWS resources like DynamoDB? The Python moto module is very useful while patching AWS resources. This post will take you through, how we can mock DynamoDB with the help of moto. Here, we will be mocking a method that stores input data into a given DynamoDB table. The idea would be […]
Writing a Skype listener using skpy
I implemented a Skype listener service that listens to messages posted on our common Skype channels. The Skype listener is written using an excellent Python module skpy. This listener serves as a building block for a few AI-based internal applications. This post outlines the implementation details. I hope it helps companies that still use Skype as their instant messaging tool. […]