A -- Copy this lambda policy

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": [
                "logs:CreateLogGroup",
                "logs:CreateLogStream",
                "logs:PutLogEvents"
            ],
            "Resource": "arn:aws:logs:*:*:*",
            "Effect": "Allow"
        },
        {
            "Action": [
                "dynamodb:PutItem",
                "dynamodb:UpdateItem",
                "dynamodb:DeleteItem"
            ],
            "Resource": "arn:aws:dynamodb:*:*:*",
            "Effect": "Allow"
        }
    ]
}

B __ FIRST LAMBDA CODE

console.log('Loading Lambda function');

exports.handler = async (event, context, callback) => {
    let resultNum = Math.ceil(999.99);

    callback(null, 'this is the original function (Math.ceil) = ' + resultNum);
};

C __ SECOND LAMBDA CODE

console.log('Loading Lambda function');

exports.handler = async (event, context, callback) => {
    let resultNum = Math.floor(999.99);

    callback(null, 'this is the canary function (Math.floor) = ' + resultNum);
};


------------------

import json

print('Loading your function')

def lambda_handler(event, context):
    #print("Received event: " + json.dumps(event, indent=2))
    # print statements actually get printed to the logs.
    print("message --> " + event['message'])

    # Actually returning the value of the 'message' key.
    return event['message']

    # Raising an exception if something goes wrong...
    raise Exception('Something went wrong!')


--------------------

import json

print("STARTING NEW INVOCATION!!!")

def lambda_handler(event, context):
    # Setting variables to equal values from the event object passed in.
    bucket = event['Records'][0]['s3']['bucket']['name']
    region = event['Records'][0]['awsRegion']
    object = event['Records'][0]['s3']['object']['key']
    user = event['Records'][0]['userIdentity']['principalId']

    print("Bucket: " + bucket)
    print("Region: " + region)
    print("User is " + user)

    return(object)