lambdafunc.py

# -------------------------------------   PLEASE READ   ------------------------------------------
# PURPOSE: This Python script is intended to be used as a AWS Lambda function with
# Runtime Version Python3.7. When integrated with AWS S3 Bucket and SNS Topic. It report
# through Email that changes(Update/deletion) has been made into the file in S3 bucket
#
# VERY IMPORTANT - REPLACE THE TEXT ENCLOSED IN BRACKETS <> on line#43 WITH YOUR SNS ARN
# THE IMPLEMENTATION OF SCRIPT IS DEMONSTRATED AT YOUTUBE URL - <PLACEHOLDER>
#
# Please feel free to update script as per your usage and it is highly recommended that user READ
# and UNDERSTAND the script and its purpose prior to the execution.
# ------------------------------------------------------------------------------------------------

import json
import urllib.parse
import boto3

print('Loading function')

s3 = boto3.client('s3')
sns = boto3.client('sns')

def lambda_handler(event, context):
    #print("Received event: " + json.dumps(event, indent=2))

    # Get the object, Key and eventName from the event and show its content type
    bucket = event['Records'][0]['s3']['bucket']['name']
    key = event['Records'][0]['s3']['object']['key']
    eventname = event['Records'][0]['eventName']
    sns_message = str("This Email Represent a File Status has been Changed in One of Your Bucket \n\n BUCKET NAME: "+ bucket +"\n\n FILE NAME: " + key + "\n\n OPERATION: " + eventname + "\n\n")
    try:
        print(eventname)
        print(str(sns_message))
        subject= "S3 Bucket[" + bucket + "] Event[" + eventname + "]"
        print(subject)
        sns_response = sns.publish(
        TargetArn='arn:aws:sns:us-east-1:ACCOUNTNAME:sns-siri',
        Message= str(sns_message),
        Subject= str(subject)
        )
        #return response['ContentType']
    except Exception as e:
        print(e)
        print('Error getting object {} from bucket {}. Make sure they exist and your bucket is in the same region as this function.'.format(key, bucket))
        raise e