Ruby script to strip out content from OKD resources for helm

clean-resource.rb

#!/usr/bin/env ruby                                                                                                                                          

require 'yaml'

data = YAML.load(STDIN.read)

kind = data['kind']

# status                                                                                                                                                     
if kind == 'Route'
  data['status']['ingress'] = []
else
  data.delete('status')
end

# metadata                                                                                                                                                   
%w( creationTimestamp generation resourceVersion selfLink uid ).each do |key|
  data['metadata'].delete(key)
end

# spec                                                                                                                                                       
if spec = data['spec']
  # spec.strategy                                                                                                                                            
  if spec.key?('strategy')
    %w( activeDeadlineSeconds resources rollingParams ).each do |key|
      spec['strategy'].delete(key)
    end
  end

  if spec.key?('template')
    spec['template']['metadata']&.delete('creationTimestamp')

    # spec.template.spec.containers[]                                                                                                                        
    spec['template']['spec']['containers'].each do |con|
      con['image'] &&= con['image'].split(/@/, 2).first

      %w( resources terminationMessagePath terminationMessagePolicy ).each do |key|
        con.delete(key)
      end
    end

    # spec.template.spec                                                                                                                                     
    %w( dnsPolicy schedulerName securityContext ).each do |key|
      spec['template']['spec'].delete(key)
    end
  end

  # spec.triggers[]                                                                                                                                          
  if spec.key?('triggers')
    spec['triggers'].each do |trig|
      trig['imageChangeParams']&.delete('lastTriggeredImage')
    end
  end
end

puts YAML.dump(data)