https://github.com/datasektionen/petrus

https://github.com/datasektionen/petrus

Last synced: about 2 months ago
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• Host: GitHub
• URL: https://github.com/datasektionen/petrus
• Owner: datasektionen
• Created: 2023-02-15T14:14:01.000Z (almost 2 years ago)
• Default Branch: master
• Last Pushed: 2023-09-22T21:36:26.000Z (over 1 year ago)
• Last Synced: 2024-04-11T19:17:54.575Z (9 months ago)
• Language: Elixir
• Size: 2.47 MB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Petrus

This is the system for simpler interaction with the printer *Petrus*, situated

in the storage in META. It's a web based system where the user can upload e.g.

PDF for printing, without connecting to, installing and configuring the printer

on their own machine. The system consists of two components, the website

(`petrus_web`) and the agent (`petrus_agent`).

## petrus_web

This is the central connecting part of the system, the user interacts with the

website in order to send print requests to the agent. The agent is connected to

the web-server through a websocket connection, receiving print requests and

pushing status updates displayed on the website.

## petrus_agent

The agent is a program running on a client connected to the printer (e.g. a

raspberry pi). The agent connects with the web-server using a websocket

connection to receive print requests and to push status information. The

program in interacts with the printer over the local network using the CUPS

system by utilizing the `lp` set of commands exposed by CUPS.