Example fact with error checking.rb

Fact.new(:databases) do
  setcode do
    output = Facter::Util::Resolution.exec('pgsql listdb')
    if $?.success?
      {
        status: :ok,
        list: output.split("\n")
      }
    else:
      raise output 
    end
  rescue e
    {
      status: e,
      list: []
    }
  end
end

# databases.status: ok
# databases.list: ['acme', 'foo']

# databases.status: Brak polaczenia do bazy
# databases.list: []