/aws-lambda-s3-image-resize

Simple code to process image resize using NodeJS, AWS S3 and Lambda

Primary LanguageJavaScriptMIT LicenseMIT

aws-lambda-s3-image-resize

Simple code for AWS Lambda to process images resize using NodeJS and AWS S3 trigger.

AWS Lambda + S3

Requirements

  • Have an AWS account.
  • Have NodeJS 8 installed locally to generate the node_modules.

AWS configuration

  1. Create 2 buckets where one must have the sufix "resized", cause it will receive the resized images. I.e.
  • my-image-bucket
  • my-image-bucket-resized
  1. Create a Lambda function and give the access role containing AmazonS3FullAccess.

It will allow Lambda to read and write to your buckets.

  1. Add an S3 trigger to your Lambda.
  • Point it to your bucket my-image-bucket.
  • The Event type must be ObjectCreated.

How to use

Locally you need to generate the package that will be uploaded to aws. So in this project root folder:

  1. Install the node_modules:
npm install
  1. Generate a lambda.tar.gz file with containing the following files inside:
zip -r lambda node_modules index.js

  1. Updalod the .zip file through your AWS Lambda panel and publish a new version.

  2. Upload some image to your not resized bucket (i.e: images).

  3. The image resized will appear inside the images-resized bucket in a folder resized-images.