/image-uploader-app

Image Uploader API using AWS API-Gateway, AWS LAMBDA using AWS CDK

Primary LanguagePythonThe UnlicenseUnlicense

Welcome to Image Uploader project!

This project aims to create REST API to upload an image to s3 bucket using AWS Api-Gateway backed by AWS Lambda, which is developed using AWS CDK.

Read the article here https://harshalpagar.medium.com/image-upload-using-aws-api-gateway-and-lambda-d4eccc631466

image

It demonstrates a CDK app with an instance of a stack (image_uploader_app_stack) which contains an Amazon API Gateway to expose REST API , which calls AWS Lambda function to upload image to S3 bucket.

Things to Change

  • Update bucket name in cdk.json file as per you.
  • Update tags in app.py file as per you.

How to deploy

Prerequisite : you should have AWS CLI [to configure environment] and AWS CDK on you machine to execute following command

Build the project

cdk synth

Deploy the project

cdk deploy image-uploader-app

CDK details

The cdk.json file tells the CDK Toolkit how to execute your app.

This project is set up like a standard Python project. The initialization process also creates a virtualenv within this project, stored under the .venv directory. To create the virtualenv it assumes that there is a python3 executable in your path with access to the venv package. If for any reason the automatic creation of the virtualenv fails, you can create the virtualenv manually once the init process completes.

To manually create a virtualenv on MacOS and Linux:

$ python -m venv .venv

After the init process completes and the virtualenv is created, you can use the following step to activate your virtualenv.

$ source .venv/bin/activate

If you are a Windows platform, you would activate the virtualenv like this:

% .venv\Scripts\activate.bat

Once the virtualenv is activated, you can install the required dependencies.

$ pip install -r requirements.txt

At this point you can now synthesize the CloudFormation template for this code.

$ cdk synth

You can now begin exploring the source code, contained in the hello directory. There is also a very trivial test included that can be run like this:

$ pytest

To add additional dependencies, for example other CDK libraries, just add to your requirements.txt file and rerun the pip install -r requirements.txt command.

Useful commands

  • cdk ls list all stacks in the app
  • cdk synth emits the synthesized CloudFormation template
  • cdk deploy deploy this stack to your default AWS account/region
  • cdk diff compare deployed stack with current state
  • cdk docs open CDK documentation

Enjoy!