Overview

A super simple RESTful api created using Flask. The idea is to have a simple api that can be used with pipeline demos and proof of concepts.

Installation

Requirements:

python -m venv ./venv
source .venv/bin/activate

Next, run

pip install -r requirements.txt

to get the dependencies.

Finally run the api with

python api.py

Example

Flask will run on http://127.0.0.1:5000/.

$ curl 127.0.0.1:5000/
[{"id":1,"name":"Monday"},{"id":2,"name":"Tuesday"},{"id":3,"name":"Wednesday"},{"id":4,"name":"Thursday"},{"id":5,"name":"Friday"},{"id":6,"name":"Saturday"},{"id":7,"name":"Sunday"}]

To return a single day pass in a number with Monday starting at 1.

$ curl 127.0.0.1:5000/2
{"day":{"id":2,"name":"Tuesday"}}

Days will also accept a post message.

$ curl -X POST 127.0.0.1:5000/
{"success":true}

Build and Push to ECR Repo

Flask App could get build and pushed to ECR repo by using below script and parameter

$ ./build-and-push.sh <aws-region-name> <ECR-Repo-URL>

• aws-region-name : could be eu-west-2 ( Default ) or similar
• ECR-Repo-URL : [aws-account-number].dkr.ecr.[aws-region-name].amazonaws.com

Deploy to AWS

Flask App could be deployed to AWS, where it will automatically deploy on AWS ECS with following resources

• Create an AWS ECS cluster.
• Create an AWS ECS task.
• Create an AWS ECS service.
• Create Default VPC with Subnets
• Create a load balancer.

pre-requisite : you should have .aws/credentials file in your shell with AWS Access and Secret Key

$ cd terraform
$ ./deploy.sh <aws-region-name> <ECR-Repo-URL>

Working Flow Diagram for AWS Infra creation for Flask App