Exceptions handling with ruby 2.1

exceptions_handling.rb

class ServiceException < StandardError; end
class RepositoryException < StandardError; end
class RethinkDBError < StandardError; end

class RecordsController
  def self.update
    RecordsService.update(@record)
  rescue ServiceException => error
    puts "Failure: #{error.inspect}"
    puts "Original failure:  #{error.cause.inspect}"
    puts "Really Original failure:  #{error.cause.cause.inspect}"

    # exception logging and notifications (with original causes)
  end
end

class RecordsService
  def self.update(record)
    RecordsRepository.update(record)
  rescue RepositoryException => error
    raise ServiceException, "Records Service exception"
  end
end

class RecordsRepository
  def self.update(record)
    raise RepositoryException, "argument some_id cannot be nil" if false
    raise RepositoryException, "argument some_othe_id cannot be nil" if false

    Mapper.update(record)
  rescue => error
    raise RepositoryException, "General database exception"
  end
end

class Mapper
  def self.update(record)
    RethinkDB.update({id: record.id, name: record.name}) 
  end
end

class RethinkDB
  def self.update(options)
    raise RethinkDBError, "RethinkDB: unable to find the field blah-blah-blah"
  end
end

# Request:
RecordsController.update

# Output:
Failure: #<ServiceException: Records Service exception>
Original failure:  #<RepositoryException: General database exception>
Really Original failure:  #<RethinkDBError: RethinkDB: unable to find the field blah-blah-blah>