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I want to write a unit test for the availability of AWS lambda functions. Is there any way to GET AWS lambdas list. I know using CMD we can get the list of AWS function. But I want any other way to get the lambda functions list. After research, I find out a rest API of all AWS services. But I didn't understand how to use them.

I found out AWS HTTP calls, links are attached https://docs.aws.amazon.com/general/latest/gr/rande.html.

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  • The preferable method is to use an AWS SDK for your favourite language, which allows you to directly call AWS services. This is simpler than constructing a REST request. Have you tried this method? Commented Jul 29, 2019 at 7:29

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Yes, you can do that using AWS Infrastructure REST API interface.

To do so,

  1. You first need to create a signature 4 authentication key for every call you make.
  2. Then you need to pass it via Authorization header in any REST request.
  3. Finally, call using ListFunctions API.

Call Example:

GET /2015-03-31/functions/?FunctionVersion=FunctionVersion&Marker=Marker&MasterRegion=MasterRegion&MaxItems=MaxItems HTTP/1.1

This gives you the list of Lambda functions deployed.

Hope it helps.

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2 Comments

Consider i want to write a unit test, which can compare all stages api gateway, and return if any API-gateway missing in any stage.
Beyond the scope of the question asked.

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