Basic Image Hosting Service

Microservices

This includes two microservices in 2 separate Git repositories

ImageStore
ImageCompress

The ImageStore microservice:

Receives an uploaded image and returns a unique identifier which can then be used to retrieve the image
Different image formats can be returned by using different extensions against the image ID
Different image tarnsformations can be download using the image ID

The ImageCompress microservice:

Calls the ImageStore service to retrieve the image using Image ID
Compresses the image
Calls the ImageStore service to

To run both services on a local machine

For ImageStore

pip install -r requirements.txt
export STORAGE_FOLDER=<path to your temp folder>
mkdir <path to your temp folder>
mkdir log
python app.py

For ImageCompress

pip install -r requirements.txt
export STORE_URL=<url path to ImageStore service>
mkdir log
python app.py

To Test

curl -H "Content-Type: application/json" -X POST -d '{"filename":"table.jpg","type":"jpg"}' http://localhost:8000/upload
curl http://0.0.0.0:8000/download/<image ID for table.jpg>\?type\=jpg
curl http://0.0.0.0:8000/compress/<image ID for table.jpg>\?type\=jpg
curl http://0.0.0.0:8000/download/<image ID for table.jpg>\?type\=jpg\&transform=compress

Docker

To run in Docker Containers use the following docker-compose.yml

version: '3'

services:
  store:
    build: './ImageStore'
    container_name: store
    ports:
      - 8000:8000
    environment:
      STORAGE_FOLDER: "/app/tmp"

  compress:
    build: './ImageCompress'
    ports:
      - 9000:9000
    links:
      - "store:imagestore"
    environment:
      STORE_URL: "http://store:8000"

A more practical architecture

Asynchronous web service

The task management and HTTP request-response sequence between the client and the server as shown in the above diagram are implemenented in the Asynchronous Web Service project.

One could use Gevent or Celery for the task management and Redis or Rabbit as the message broker.

anilnairxyz / ImageStore