Flask-s3-example

Simple Flask application to uplaod files to an s3 storage.

Docker

To install docker refer here.

We use docker-compose to start 4 docker containers running minio server instances using nginx reverse proxy and load balancing.
Minio UI can be accessed though http://localhost:9000/.

Setup

Simply run

docker-compose up

Flask

We use Flask to create the simplest application and expose an upload endpoint.

Setup

1. Create and activate virtual environment.

python -m venv env
source env/bin/activate # or \env\Scripts\activate for windows

2. Install required dependencies.

pip install -r requirements.txt

3. Run application.

python app.py

Application is running on localhost:5000.
Endpoints:

• GET /
• POST /upload.

Endpoint Testing

A tool like Postman can be used to test the endpoint.

Send file in Postman.

Set method type to POST and URL to localhost:5000/upload.
Select Body -> form-data -> Enter parameter name "file" and on right side next to value column, there will be dropdown "text, file", select File.
Choose file to upload and post it.