Using an Amazon S3 trigger to create thumbnail images - Terraform

Video

Introduction

We will create and configure a Lambda function that resizes images added to an Amazon Simple Storage Service (Amazon S3) bucket. When you add an image file to your bucket, Amazon S3 invokes your Lambda function. The function then creates a thumbnail version of the image and outputs it to a different Amazon S3 bucket.

Problem Statement and Solution

• Create source and destination Amazon S3 buckets and upload a sample image.

• Create a Lambda function that resizes an image and outputs a thumbnail to an Amazon S3 bucket.

• Configure a Lambda trigger that invokes your function when objects are uploaded to your source bucket.

Architecture Diagram

Project Walkthrough

• s3 Bucket

  • Create two Amazon S3 buckets
  • Upload a test image to your source bucket

• Lambda Function

  • Create a permissions policy
  • Create an execution role
  • Create the function deployment package
  • Create the Lambda function

• Trigger

  • Configure Amazon S3 to invoke the function

• Test

  • Test Lambda function with a dummy event
  • Test with trigger