integrating the ruby debugger into yast

Ruby Debugger
Integrating Ruby Debugger into YaST

Ing. Ladislav SlezkSUSE (The YaST Team)[email protected]

Ruby Debugger Introduction

Debugger is a tool for testing and inspecting running programs

The Ruby debugger is called byebug

Ruby Debugger Installation

Run

Gemfile:

Run

gem install byebug

group :development, :test do gem 'byebug'end

bundle install

Ruby Debugger Usage

Start:

Or adapt the script:

And start:

require 'byebug'byebug

byebug script.rb

ruby script.rb

And YaST...?

Unfortunately this does NOT work in YaST

YaST runs embedded Ruby

YaST is a GUI/TUI desktop application

The installer runs in a limited minimal systemRead-only RAM disk, no storage

No desktop environment

Cannot install new libraries/gems easily

Byebug Solution

Byebug client/server architecture

Input/output goes through a TCP port instead of STDOUT/STDIN

Allows remote debugging

Byebyg Remote Debugging

Start server (in the code):

Start client (from another console):

# initialize the serverrequire 'byebug/core'Byebug.wait_connection = true# use 0.0.0.0 for real remote debuggingByebug.start_server('localhost', 3344)# start the debuggerbyebug

byebug -R localhost:3344

YaST GUI

Open a new terminal window automatically

Run xterm -e byebug -R ...

YaST Text Mode

Connect manually in the text mode

Invoking the Debugger in YaST

Simply boot the installer with

In installed system run with

y2debugger=1

Y2DEBUGGER=1 yast2

Demo

YaST Exceptions

Run the debugger also from the global exception handler

Questions?

Links

https://github.com/deivid-rodriguez/byebug

https://github.com/deivid-rodriguez/byebug/blob/master/GUIDE.md

https://yastgithubio.readthedocs.io/en/latest/debugging/

https://github.com/yast/yast-ruby-bindings/blob/master/src/ruby/yast/debugger.rb

Thank You!

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