Question 18551 in Amazon Web Sevices Question posted in
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Why can AWS Lambda not read a test event sent to it via the API Gateway test? – Amazon Web Sevices

I am writing an application on AWS Lambda in Python that expects to receive information that gets placed in the event dictionary.

def lambda_handler(event, context):
    # TODO implement

    try:
        task = event["task"]
    except:
        return {
            'statusCode': 500,
            'body': json.dumps('Cound not find the requested task.')
        }

When I test the JSON event below within the Lambda console, it is understood by the function, which then does its thing.

{
  "task": "returnID",
  "username": "noneofyourbusiness",
  "password": "pleasedonotask"
}

But when I place this event in the test provided within the AWS API Gateway (console version), it fails to find event["task"].

What else should I check? Is there some other resource that I should consult?

I tried putting the JSON in the query string (even though the method should be POST) and tried again using both POST and GET.

Tags:

2

Answers


  1. 0

    Your task is inside body of the event. You should use:

    task = event["body"]["task"]
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  2. 0

    As you seem to have realized, events come with far more information than just the payload itself. You can checkout the docs for the event format and how you should respond.

    https://docs.aws.amazon.com/lambda/latest/dg/services-apigateway.html#apigateway-example-event

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