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346 lines
13 KiB
346 lines
13 KiB
# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import contextlib
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import dbus
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import logging
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import sys
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import traceback
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import common
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from autotest_lib.client.bin import utils
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from autotest_lib.client.common_lib import error
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from autotest_lib.client.cros import backchannel
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from autotest_lib.client.cros import upstart
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from autotest_lib.client.cros.cellular import mm
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from autotest_lib.client.cros.cellular.pseudomodem import pseudomodem_context
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from autotest_lib.client.cros.networking import cellular_proxy
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from autotest_lib.client.cros.networking import shill_context
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from autotest_lib.client.cros.networking import shill_proxy
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class CellularTestEnvironment(object):
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"""Setup and verify cellular test environment.
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This context manager configures the following:
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- Sets up backchannel.
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- Shuts down other devices except cellular.
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- Shill and MM logging is enabled appropriately for cellular.
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- Initializes members that tests should use to access test environment
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(eg. |shill|, |modem_manager|, |modem|).
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- modemfwd is stopped to prevent the modem from rebooting underneath
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us.
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Then it verifies the following is valid:
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- The backchannel is using an Ethernet device.
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- The SIM is inserted and valid.
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- There is one and only one modem in the device.
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- The modem is registered to the network.
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- There is a cellular service in shill and it's not connected.
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Don't use this base class directly, use the appropriate subclass.
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Setup for over-the-air tests:
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with CellularOTATestEnvironment() as test_env:
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# Test body
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Setup for pseudomodem tests:
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with CellularPseudoMMTestEnvironment(
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pseudomm_args=({'family': '3GPP'})) as test_env:
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# Test body
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"""
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def __init__(self, use_backchannel=True, shutdown_other_devices=True,
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modem_pattern='', skip_modem_reset=False):
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"""
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@param use_backchannel: Set up the backchannel that can be used to
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communicate with the DUT.
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@param shutdown_other_devices: If True, shutdown all devices except
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cellular.
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@param modem_pattern: Search string used when looking for the modem.
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"""
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# Tests should use this main loop instead of creating their own.
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self.mainloop = dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
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self.bus = dbus.SystemBus(mainloop=self.mainloop)
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self.shill = None
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self.modem_manager = None
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self.modem = None
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self.modem_path = None
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self._backchannel = None
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self._modem_pattern = modem_pattern
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self._skip_modem_reset = skip_modem_reset
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self._nested = None
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self._context_managers = []
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if use_backchannel:
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self._backchannel = backchannel.Backchannel()
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self._context_managers.append(self._backchannel)
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if shutdown_other_devices:
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self._context_managers.append(
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shill_context.AllowedTechnologiesContext(
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[shill_proxy.ShillProxy.TECHNOLOGY_CELLULAR]))
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@contextlib.contextmanager
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def _disable_shill_autoconnect(self):
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self._enable_shill_cellular_autoconnect(False)
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yield
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self._enable_shill_cellular_autoconnect(True)
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def __enter__(self):
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try:
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if upstart.has_service('modemfwd') and upstart.is_running('modemfwd'):
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upstart.stop_job('modemfwd')
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# Temporarily disable shill autoconnect to cellular service while
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# the test environment is setup to prevent a race condition
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# between disconnecting the modem in _verify_cellular_service()
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# and shill autoconnect.
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with self._disable_shill_autoconnect():
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self._nested = contextlib.nested(*self._context_managers)
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self._nested.__enter__()
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self._initialize_shill()
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# Perform SIM verification now to ensure that we can enable the
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# modem in _initialize_modem_components(). ModemManager does not
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# allow enabling a modem without a SIM.
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self._verify_sim()
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self._initialize_modem_components()
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self._setup_logging()
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self._verify_backchannel()
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self._wait_for_modem_registration()
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self._verify_cellular_service()
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return self
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except (error.TestError, dbus.DBusException,
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shill_proxy.ShillProxyError) as e:
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except_type, except_value, except_traceback = sys.exc_info()
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lines = traceback.format_exception(except_type, except_value,
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except_traceback)
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logging.error('Error during test initialization:\n' +
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''.join(lines))
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self.__exit__(*sys.exc_info())
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raise error.TestError('INIT_ERROR: %s' % str(e))
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except:
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self.__exit__(*sys.exc_info())
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raise
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def __exit__(self, exception, value, traceback):
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if upstart.has_service('modemfwd'):
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upstart.restart_job('modemfwd')
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if self._nested:
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return self._nested.__exit__(exception, value, traceback)
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self.shill = None
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self.modem_manager = None
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self.modem = None
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self.modem_path = None
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def _get_shill_cellular_device_object(self):
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return utils.poll_for_condition(
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lambda: self.shill.find_cellular_device_object(),
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exception=error.TestError('Cannot find cellular device in shill. '
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'Is the modem plugged in?'),
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timeout=shill_proxy.ShillProxy.DEVICE_ENUMERATION_TIMEOUT)
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def _enable_modem(self):
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modem_device = self._get_shill_cellular_device_object()
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try:
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modem_device.Enable()
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except dbus.DBusException as e:
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if (e.get_dbus_name() !=
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shill_proxy.ShillProxy.ERROR_IN_PROGRESS):
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raise
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utils.poll_for_condition(
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lambda: modem_device.GetProperties()['Powered'],
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exception=error.TestError(
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'Failed to enable modem.'),
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timeout=shill_proxy.ShillProxy.DEVICE_ENABLE_DISABLE_TIMEOUT)
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def _enable_shill_cellular_autoconnect(self, enable):
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shill = cellular_proxy.CellularProxy.get_proxy(self.bus)
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shill.manager.SetProperty(
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shill_proxy.ShillProxy.
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MANAGER_PROPERTY_NO_AUTOCONNECT_TECHNOLOGIES,
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'' if enable else 'cellular')
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def _is_unsupported_error(self, e):
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return (e.get_dbus_name() ==
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shill_proxy.ShillProxy.ERROR_NOT_SUPPORTED or
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(e.get_dbus_name() ==
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shill_proxy.ShillProxy.ERROR_FAILURE and
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'operation not supported' in e.get_dbus_message()))
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def _reset_modem(self):
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modem_device = self._get_shill_cellular_device_object()
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try:
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# MBIM modems do not support being reset.
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self.shill.reset_modem(modem_device, expect_service=False)
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except dbus.DBusException as e:
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if not self._is_unsupported_error(e):
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raise
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def _initialize_shill(self):
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"""Get access to shill."""
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# CellularProxy.get_proxy() checks to see if shill is running and
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# responding to DBus requests. It returns None if that's not the case.
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self.shill = cellular_proxy.CellularProxy.get_proxy(self.bus)
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if self.shill is None:
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raise error.TestError('Cannot connect to shill, is shill running?')
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def _initialize_modem_components(self):
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"""Reset the modem and get access to modem components."""
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# Enable modem first so shill initializes the modemmanager proxies so
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# we can call reset on it.
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self._enable_modem()
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if not self._skip_modem_reset:
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self._reset_modem()
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# PickOneModem() makes sure there's a modem manager and that there is
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# one and only one modem.
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self.modem_manager, self.modem_path = \
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mm.PickOneModem(self._modem_pattern)
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self.modem = self.modem_manager.GetModem(self.modem_path)
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if self.modem is None:
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raise error.TestError('Cannot get modem object at %s.' %
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self.modem_path)
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def _setup_logging(self):
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self.shill.set_logging_for_cellular_test()
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self.modem_manager.SetDebugLogging()
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def _verify_sim(self):
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"""Verify SIM is valid.
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Make sure a SIM in inserted and that it is not locked.
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@raise error.TestError if SIM does not exist or is locked.
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"""
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modem_device = self._get_shill_cellular_device_object()
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props = modem_device.GetProperties()
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# No SIM in CDMA modems.
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family = props[
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cellular_proxy.CellularProxy.DEVICE_PROPERTY_TECHNOLOGY_FAMILY]
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if (family ==
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cellular_proxy.CellularProxy.
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DEVICE_PROPERTY_TECHNOLOGY_FAMILY_CDMA):
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return
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# Make sure there is a SIM.
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if not props[cellular_proxy.CellularProxy.DEVICE_PROPERTY_SIM_PRESENT]:
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raise error.TestError('There is no SIM in the modem.')
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# Make sure SIM is not locked.
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lock_status = props.get(
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cellular_proxy.CellularProxy.DEVICE_PROPERTY_SIM_LOCK_STATUS,
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None)
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if lock_status is None:
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raise error.TestError('Failed to read SIM lock status.')
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locked = lock_status.get(
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cellular_proxy.CellularProxy.PROPERTY_KEY_SIM_LOCK_ENABLED,
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None)
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if locked is None:
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raise error.TestError('Failed to read SIM LockEnabled status.')
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elif locked:
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raise error.TestError(
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'SIM is locked, test requires an unlocked SIM.')
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def _verify_backchannel(self):
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"""Verify backchannel is on an ethernet device.
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@raise error.TestError if backchannel is not on an ethernet device.
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"""
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if self._backchannel is None:
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return
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if not self._backchannel.is_using_ethernet():
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raise error.TestError('An ethernet connection is required between '
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'the test server and the device under test.')
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def _wait_for_modem_registration(self):
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"""Wait for the modem to register with the network.
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@raise error.TestError if modem is not registered.
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"""
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utils.poll_for_condition(
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self.modem.ModemIsRegistered,
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exception=error.TestError(
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'Modem failed to register with the network.'),
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timeout=cellular_proxy.CellularProxy.SERVICE_REGISTRATION_TIMEOUT)
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def _verify_cellular_service(self):
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"""Make sure a cellular service exists.
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The cellular service should not be connected to the network.
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@raise error.TestError if cellular service does not exist or if
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there are multiple cellular services.
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"""
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service = self.shill.wait_for_cellular_service_object()
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try:
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service.Disconnect()
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except dbus.DBusException as e:
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if (e.get_dbus_name() !=
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cellular_proxy.CellularProxy.ERROR_NOT_CONNECTED):
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raise
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success, state, _ = self.shill.wait_for_property_in(
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service,
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cellular_proxy.CellularProxy.SERVICE_PROPERTY_STATE,
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('idle',),
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cellular_proxy.CellularProxy.SERVICE_DISCONNECT_TIMEOUT)
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if not success:
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raise error.TestError(
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'Cellular service needs to start in the "idle" state. '
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'Current state is "%s". '
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'Modem disconnect may have failed.' %
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state)
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class CellularOTATestEnvironment(CellularTestEnvironment):
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"""Setup and verify cellular over-the-air (OTA) test environment. """
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def __init__(self, **kwargs):
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super(CellularOTATestEnvironment, self).__init__(**kwargs)
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class CellularPseudoMMTestEnvironment(CellularTestEnvironment):
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"""Setup and verify cellular pseudomodem test environment. """
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def __init__(self, pseudomm_args=None, **kwargs):
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"""
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@param pseudomm_args: Tuple of arguments passed to the pseudomodem, see
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pseudomodem_context.py for description of each argument in the
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tuple: (flags_map, block_output, bus)
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"""
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kwargs["skip_modem_reset"] = True
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super(CellularPseudoMMTestEnvironment, self).__init__(**kwargs)
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self._context_managers.append(
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pseudomodem_context.PseudoModemManagerContext(
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True, bus=self.bus, *pseudomm_args))
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