multiple_services.rb

class SomeService
  def call
    call_service_a
  end
  
  private
  
  def service_a
    # ... uses status objects 
  end
  
  def service_b
    # ... uses status objects
  end
  
  def service_c
    # ... raises exceptions
  end
  
  def call_service_a
    result = service_a.call
    if result.success?
      call_service_b(result.data)
    else
      Error.new("service A failed")
    end  
  end
  
  def call_service_b(data_from_a)
    result = service_b.call
    if result.success?
      call_service_c(data_from_a, result.data)
    else
      Error.new("service B failed")
    end
  end
  
  def call_service_c(data_from_a, data_from_b)
    result = service_c.call
    Success.new("yay!")
  rescue ServiceCException
    Error.new("service C failed")
  end

end