| # Copyright 2018 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from autotest_lib.client.cros.update_engine import nebraska_wrapper |
| from autotest_lib.client.cros.update_engine import update_engine_test |
| |
| class autoupdate_UrlSwitch(update_engine_test.UpdateEngineTest): |
| """Tests that we can continue with the second url when the first fails.""" |
| version = 1 |
| |
| def run_once(self, payload_url): |
| """ |
| Tests to see whether the update_engine can successfully switch to a |
| different URL if one fails. |
| |
| @param image_url: The URL of the update payload. |
| |
| """ |
| with nebraska_wrapper.NebraskaWrapper( |
| log_dir=self.resultsdir, payload_url=payload_url) as nebraska: |
| |
| # Start the update that will return two Urls. This matches what test |
| # and production omaha does today. |
| self._check_for_update( |
| nebraska.get_update_url(failures_per_url=1, num_urls=2, |
| critical_update=True)) |
| self._wait_for_progress(0.2) |
| |
| # Pull the network cable so the update fails. |
| self._disable_internet() |
| |
| # It will retry 21 times before giving up. |
| self._wait_for_update_to_fail() |
| |
| # Check that we are moving to the next Url. |
| self._enable_internet() |
| self._check_update_engine_log_for_entry( |
| 'Reached max number of failures for Url', |
| raise_error=True) |
| |
| # The next update attempt should resume and finish successfully. |
| self._check_for_update( |
| nebraska.get_update_url(critical_update=True)) |
| self._wait_for_update_to_complete() |
| self._check_update_engine_log_for_entry( |
| 'Resuming an update that was previously started.', |
| raise_error=True) |
