def test_wait_for_device(self):
"""Tests wait_for_device."""
adb.wait_for_device()
self.assertEqual(adb.get_device_state(), 'device')
def test_state_correct_after_wait(self): """Ensure that the function works correctly when a device is connected.""" adb.wait_for_device() self.assertEqual(adb.get_device_state(), 'device')
def flash_to_latest_build_if_needed():
"""Wipes user data, resetting the device to original factory state."""
if environment.get_value('LOCAL_DEVELOPMENT'):
# Don't reimage local development devices.
return
run_timeout = environment.get_value('RUN_TIMEOUT')
if run_timeout:
# If we have a run timeout, then we are already scheduled to bail out and
# will be probably get re-imaged. E.g. using frameworks like Tradefed.
return
# Check if a flash is needed based on last recorded flash time.
last_flash_time = persistent_cache.get_value(
LAST_FLASH_TIME_KEY, constructor=datetime.datetime.utcfromtimestamp)
needs_flash = last_flash_time is None or dates.time_has_expired(
last_flash_time, seconds=adb.FLASH_INTERVAL)
if not needs_flash:
return
build_info = {}
if adb.is_gce():
adb.recreate_gce_device()
else:
# Physical device.
is_google_device = google_device()
if is_google_device is None:
logs.log_error('Unable to query device. Reimaging failed.')
adb.bad_state_reached()
elif not is_google_device:
# We can't reimage these, skip.
logs.log('Non-Google device found, skipping reimage.')
return
else:
# For Google devices.
# Check if both |BUILD_BRANCH| and |BUILD_TARGET| environment variables
# are set. If not, we don't have enough data for reimaging and hence
# we bail out.
branch = environment.get_value('BUILD_BRANCH')
target = environment.get_value('BUILD_TARGET')
if not target:
# We default to userdebug configuration.
build_params = get_build_parameters()
if build_params:
target = build_params.get('target') + '-userdebug'
# Cache target in environment. This is also useful for cases when
# device is bricked and we don't have this information available.
environment.set_value('BUILD_TARGET', target)
if not branch or not target:
logs.log_warn(
'BUILD_BRANCH and BUILD_TARGET are not set, skipping reimage.'
)
return
# Download the latest build artifact for this branch and target.
build_info = fetch_artifact.get_latest_artifact_info(
branch, target)
if not build_info:
logs.log_error(
'Unable to fetch information on latest build artifact for '
'branch %s and target %s.' % (branch, target))
return
# Check if our local build matches the latest build. If not, we will
# download it.
build_id = build_info['bid']
target = build_info['target']
image_directory = environment.get_value('IMAGES_DIR')
last_build_info = persistent_cache.get_value(LAST_FLASH_BUILD_KEY)
if not last_build_info or last_build_info['bid'] != build_id:
# Clean up the images directory first.
shell.remove_directory(image_directory, recreate=True)
# We have a new build, download the build artifacts for it.
for image_regex in FLASH_IMAGE_REGEXES:
image_file_path = fetch_artifact.get(
build_id, target, image_regex, image_directory)
if not image_file_path:
logs.log_error(
'Failed to download image artifact %s for '
'branch %s and target %s.' %
(image_file_path, branch, target))
return
if image_file_path.endswith('.zip'):
archive.unpack(image_file_path, image_directory)
# We do one device flash at a time on one host, otherwise we run into
# failures and device being stuck in a bad state.
flash_lock_key_name = 'flash:%s' % socket.gethostname()
if not locks.acquire_lock(flash_lock_key_name, by_zone=True):
logs.log_error(
'Failed to acquire lock for reimaging, exiting.')
return
logs.log('Reimaging started.')
logs.log('Rebooting into bootloader mode.')
for _ in xrange(FLASH_RETRIES):
adb.run_as_root()
adb.run_adb_command(['reboot-bootloader'])
time.sleep(FLASH_REBOOT_BOOTLOADER_WAIT)
adb.run_fastboot_command(['oem', 'off-mode-charge', '0'])
adb.run_fastboot_command(['-w', 'reboot-bootloader'])
for partition, partition_image_filename in FLASH_IMAGE_FILES:
partition_image_file_path = os.path.join(
image_directory, partition_image_filename)
adb.run_fastboot_command(
['flash', partition, partition_image_file_path])
if partition in ['bootloader', 'radio']:
adb.run_fastboot_command(['reboot-bootloader'])
adb.run_fastboot_command('reboot')
time.sleep(FLASH_REBOOT_WAIT)
if adb.get_device_state() == 'device':
break
logs.log_error('Reimaging failed, retrying.')
locks.release_lock(flash_lock_key_name, by_zone=True)
if adb.get_device_state() != 'device':
logs.log_error('Unable to find device. Reimaging failed.')
adb.bad_state_reached()
logs.log('Reimaging finished.')
# Reset all of our persistent keys after wipe.
persistent_cache.delete_value(BUILD_PROP_MD5_KEY)
persistent_cache.delete_value(LAST_TEST_ACCOUNT_CHECK_KEY)
persistent_cache.set_value(LAST_FLASH_BUILD_KEY, build_info)
persistent_cache.set_value(LAST_FLASH_TIME_KEY, time.time())