Send request to Lambda from another Lambda through API Gateway (Python).

Question

Hi,

I'm trying to write a 'health-check' Lambda which calls a few of our other Lambda functions to ensure that our application is healthy.

How can I do this in Python?
I'm thinking that I can just use `requests.get()` to the correct URL or is there a better way?

Answer

Why don’t you monitor your lambda in Cloudwatch metrics and lambda insights and alert on failed invocations etc

Answer

Hi,

If you consider your existing application with API gateway like an "external API", this post details the Python code to do what you want : https://blog.devgenius.io/making-a-call-to-external-api-from-aws-lambda-resides-within-vpc-python-6184f5fe233a

Best,

Didier

Answer

The example Lamda which I am starting with makes a call to a third party API. I want to make sure that I get a 200 from the third party. This will ensure that the third party is up and responding and also that our Lambda is working and making the call.

Answer

If you're just looking to invoke an lambda, there's a[ boto3 call](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/lambda/client/invoke.html) for this.

Can you tell us a bit more what you're trying to accomplish? What does "healthy" mean to your application?

Send request to Lambda from another Lambda through API Gateway (Python).

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