discourse/app/models/backup_file.rb

class BackupFile
  include ActiveModel::SerializerSupport

  attr_reader :filename,
              :size,
              :last_modified,
              :source

  def initialize(filename:, size:, last_modified:, source: nil)
    @filename = filename
    @size = size
    @last_modified = last_modified
    @source = source
  end

  def ==(other)
    attributes == other.attributes
  end

  protected

  def attributes
    [@filename, @size, @last_modified, @source]
  end
end