AWS SAM Local

lambda_function.py

import os
from logging import getLogger, DEBUG, INFO

logger = getLogger(__name__)
if os.getenv("AWS_SAM_LOCAL"):
    logger.setLevel(DEBUG)
else:
    logger.setLevel(INFO)

    
def lambda_handler(event, context):
  logger.debug(event['requestContext']['identity']['sourceIp'])
  return {'statusCode': 200}

template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Resources:
  SourceIpSample:
    Type: "AWS::Serverless::Function"
    Properties:
      Runtime: python3.6
      Handler: lambda_function.lambda_handler
      Events:
        WebHook:
          Type: Api
          Properties:
            Path: /
            Method: any