1 # Copyright (c) 2015 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 7 import common 8 from autotest_lib.client.cros.cellular.mbim_compliance import entity 9 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors 10 11 12 class Sequence(entity.Entity): 13 """ Base class for all sequences. """ 14 15 def run(self, **kwargs): 16 """ 17 Run the sequence. 18 19 @returns The result of the sequence. The type of value returned varies 20 by the sequence type. 21 22 """ 23 logging.info('---- Sequence (%s) begin ----', self.name()) 24 result = self.run_internal(**kwargs) 25 logging.info('---- Sequence (%s) end ----', self.name()) 26 return result 27 28 def run_internal(self): 29 """ 30 The actual method runs the sequence. 31 Subclasses should override this method to run their own sequence. 32 33 """ 34 mbim_errors.log_and_raise(NotImplementedError) 35 36 37 def name(self): 38 """ Return str name. """ 39 return self.__class__.__name__ 40 41 42 def detach_kernel_driver_if_active(self, interface_number): 43 """ 44 Check if interfaces are occupied by kernel driver. If kernel driver is 45 active, then we can't exclusively use the inteface for tests. 46 47 @param interface_number: The bInterfaceNumber value of the interface 48 under check. 49 50 """ 51 if self.device_context.device.is_kernel_driver_active(interface_number): 52 self.device_context.device.detach_kernel_driver(interface_number) 53
