Run multiple riemann-tools in a singe ruby process

riemann-wrapper.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

Process.setproctitle($PROGRAM_NAME)

require 'riemann/tools/health'
require 'riemann/tools/net'
require 'riemann/tools/nut'

argv = ARGV.dup

threads = []

[
  [Riemann::Tools::Health, %w[]],
  # [Riemann::Tools::Net,    %w[]],
  [Riemann::Tools::Nut,    %w[--interval 20]],
].each do |klass, extra_argv|
  ARGV.replace(argv + extra_argv)
  instance = klass.new
  # Force evaluation of options.  This rely on ARGV and needs to be done before
  # we launch multiple threads which compete to read information from there.
  instance.options
  threads << Thread.new { instance.run }
end

threads.each(&:join)