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by scarface74 2938 days ago
Why do you say that you can only run lambdas in the environment? A Lambda function just calls a function with an event and a context parameter.

I run and test my Lambda methods locally just like I do my Controller classes - create "unit tests" (not real unit tests just a method that calls the Lambda handler with the event body I want to use). Your Lambda handler should be skinny and just translate the message to your business methods just like a controller.
1 comments
vincentdm 2938 days ago
Yes, I understand that, but it doesn't account for all the moving parts of the Lambda service (like container re-use, warmup time, deployment steps...) that have no local equivalent AFAIK. But maybe I'm overestimating their importance...
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eikenberry 2937 days ago
You can replicate some of the live-like environment using SAM[1] and SAM-local[2]. Combined with services like ngrok[3] you can even test remote hooks and such.

[1] https://github.com/awslabs/serverless-application-model [2] https://github.com/awslabs/aws-sam-cli [3] https://ngrok.com/ or http://serveo.net/

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scarface74 2938 days ago
Deployment to a production environment is usually different than running locally. I have a CloudFormation script to handle deployments.

Well, I also have a yml file that builds my Lambda package with CodeBuid since I develop on Windows and Python packages with binary dependencies don't work on Linux based lambdas.

The CodeBuild step will package the Linux versions of the packages.

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