rpi-printerQ

A complete rewrite of TrevorNT's RPI PrinterQueue-NG. The old version of the printer queue had a tendency to crash once in a while and unnecessarily used a database to store printer data.

Changes

• Flask instead of Django
• Usage of ReactJS on the frontend to avoid page refreshing to re-render data
• Data is stored in a single JSON file rather than a database

Getting Started

Requirements

• Python 3.x
• Flask

Installation

• Recommended: Setup a virtualenv.
• Run pip install -r requirements.txt.
• Setup your config file.
• Run python app.py.
• Go to http://localhost:5000/.

Config File

Example:

SSH_SERVER = 'this-server.edu'
SSH_USERNAME = 'anon'
SSH_PASSWORD = 'hunter2'

Development

Dependencies

• Python 3.x - For Flask
• ~ Paramiko - SSH capabilities
• ~ APScheduler - Calling the updater every set interval
• ~ Flask - Serving webpages, running SSH commands to the printers, storing data
• npm - Frontend package manager
• reactjs - Displaying and updating data from Flask
• react-bootstrap - Styling
• babelify - For use with ReactJS + Browserify
• browserify - Packaging node modules and ReactJS code into a single JS file

File Structure

.
├── queue_app               # Flask application files
│   ├── static              # Location of all CSS/JS/JSON/Fonts files
│   ├── templates           # Location of all HTML files
│   ├── __init__.py         # Main Flask applicaton file. Routes and auto-updater are defined here  
│   └── updater.py          # Code for updater
├── app.py                  # Python file to run Flask application
├── config.py               # Config file that stores server/user account information
├── main.js                 # Source code for ReactJS
├── requirements.txt
├── package.json
└── README.md