OPT

OPT stands for Open Printing Tunnel is a solution to compress printing stream from TSE instance to a remote printers.

More screenshots in ./docs/screenshots/.

Components

• backend/: manage OPT containers, usually one per customer (e.g. opt.coaxis.com) ;
  • admin: backend to managed customers and users also provide a REST API ;
  • frontend/: web interface to manage daemon containers ;
• daemon/: manage compression channels through the UNIX daemon mast and mast-utils ;
  • api/: REST API to control mast daemon and mast-utils ;
  • frontend/: web interface to manage sites and printers (add, remove, edit, etc.) and check printers status ;
  • optbox/: development container to simulate remote device ;
  • proxy-web/: proxy requests to frontend or the API.
• deploy/: scripts for project's deployment ;
• nginx/: main server configuration to reach backend ;

Architecture

Printing with OPT

Admin

Administrators use the Django admin to:

• create and manage clients ;
• manage employees and their permissions to control daemons ;

Back-office: Containers Management

Technician employees use the back-office to:

• create and manage daemons' container ;

Permissions

User	Clients	Daemons	Networks	Admin	Description
anonymous	-	-	-	-
employee	-	-	-	-
technician	✔	✔	-	-	flag to enable on employee
admin	✔	✔	✔	✔

Front-office: OPT Container

Employees use front-office to:

• create and manage sites ;
• create and manage printers' tunnel ;

Infrastructure evolution

Documentation

• Troubleshooting ;
• How to Docker ;
• Daemon usage ;
• Setup Django Backend

Requirements

Most of the requirements are managed by the Docker containers themselves. What you need is a working Docker environment (i.e. docker and docker-compose).

For the host system we recommend Debian-based OS, other distribution are not officially supported. For reference, here is a list of the main requirements:

• Debian 6.0+ or Ubuntu-server 16.04+ ;
• docker ≥1.12 ;
• docker-compose ≥1.7.0;
• Python ≥3.5.

Installation

From developer computer, run:

$ cd frontend/
$ npm run build
$ cd ../deploy/
$ archive="$(./create_archive.sh | tail -n 1)"
$ ./send-scripts.sh "$archive"

If you need to setup a python environment, please have a look at our short Python and virtualenv doc.

Development

See docs/how-to-develop.md.

Glossary

• channels: a port forwarding configuration from datacenter to printer (one per printer) ;
• clients: company that require printing stream compression, may have several sites, each with one or many printers ;
• datacenter: manages TSE instances for differents sites and clients, also manage the OPT instance ;
• remote devices or sites: a machine at the customer location accessible through Internet by its IP address or FQDN. Each device can be connected to one or more printers locally to forward data streams ;
• tunnels: an SSH's tunnel between the data-center and the remote machine. Can have one or more channels ;
• configuration : are stored in each container in /etc/mast/$site_id while the /etc/mast/ directory is a docker volume.

What's under the hood?

• Backend: Django, Flask ;
• Containers: Docker, docker-compose, docker-py ;
• Daemon: bash, make, trickle, ssh, autossh ;
• Deployment: bash ;
• Frontend: Vue.js, Bootstrap, webpack, Express ;
• RESTful API: Django REST framework, Flask-RESTful ;
• Server: nginx.