Flask + Celery snack

Code for testing working with celery, for future developments.

Acknowledgement

Checkout thcheckout this article: Using Celery With Flask

Technologies/Tools used & needed.

Python - A programming language.
Flask - A microframework for Python.
Virtualenv - A tool to create isolated virtual environments

NB

Docker is a work around to not having to install Redis
Docker - set of platform as a service products that use OS-level virtualization to deliver software in packages called containers.

Quick setup: linux based OS

Clone or this download repo then 'cd' into the dir
Create virtual environment
```
virtualenv -p python3 venv
```

Create a '.env' file & add the following

touch .env

Add the following lines to the file

source venv/bin/activate
export FLASK_APP=app.py
export FLASK_DEBUG=1
export FLASK_ENV=development
export CELERY_BROKER_URL='redis://0.0.0.0:6379/0'
export CELERY_RESULT_BACKEND='redis://0.0.0.0:6379/0'

Create an instance dir & config.py file, add the following

mkdir instance && touch config.py

add the following

SECRET_KEY=<your value>
MAIL_USERNAME=<your gmail username>
MAIL_PASSWORD=<your gmail password>

Activate virtual environment & export variables
```
source .env
```

Install Dependancies.

pip install --no-cache-dir -r requirements.txt

Running the app

Open the 3 terminal windows in the current dir
Start redis on one terminal
```
chmod +x run-redis.sh && ./run-redis.sh
```

Run celery worker on another terminal

celery worker -A app.celery --loglevel=info

Run flask app on the last window
```
flask run
```

Go to the browser and open 127.0.0.1:5000

fun fact: minimise all windows to view changes in the windows.