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      1 # Copyright (c) 2014 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 """
      6 Run a pre-defined set of pages on the DUT for Chrome profile collection.
      7 
      8 The purpose of this test is to exercise chrome with a meaningful set
      9 of pages while a profile of Chrome is captured. It also aims at using
     10 the minimum set of functionality from Telemetry since Telemetry is not
     11 very stable on ChromeOS at this point.
     12 
     13 This test is designed to be called from the telemetry_AFDOGenerate
     14 server test. The server test will start the "perf" profiling tool on
     15 the DUT before starting this test. It will also capture the chrome
     16 profile and upload it to Google Storage to be used for an optimized
     17 build of Chrome.
     18 """
     19 
     20 import logging
     21 import os
     22 import sys
     23 import time
     24 import traceback
     25 
     26 from autotest_lib.client.common_lib.cros import chrome
     27 from autotest_lib.client.bin import test
     28 from autotest_lib.client.cros import httpd
     29 
     30 # List of page cycler pages to use for Chrome profiling
     31 PAGE_CYCLER_BENCHMARKS = [
     32         'alexa_us',
     33         'bloat',
     34         'dhtml',
     35         'dom',
     36         'intl1',
     37         'intl2',
     38         'morejs',
     39         'morejsnp',
     40         'moz',
     41         'moz2' ]
     42 
     43 HTTP_PORT = 8000
     44 FILE_URL_PREFIX = 'http://localhost:%d/test_src/' % HTTP_PORT
     45 
     46 class telemetry_AFDOGenerateClient(test.test):
     47     """
     48     Run a set of pre-defined set of pages to exercise Chrome so that
     49     we can capture a Chrome profile.
     50     """
     51     version = 1
     52 
     53 
     54     def initialize(self):
     55         """Setup required DEPS and start the http listener."""
     56         dep = 'page_cycler_dep'
     57         dep_dir = os.path.join(self.autodir, 'deps', dep)
     58         self.job.install_pkg(dep, 'dep', dep_dir)
     59         self.listener = httpd.HTTPListener(HTTP_PORT, docroot=dep_dir)
     60         self.listener.run()
     61 
     62 
     63     def cleanup(self):
     64         """Stop the active http listener."""
     65         self.listener.stop()
     66 
     67 
     68     def run_once(self):
     69         """Display predetermined set of pages so that we can profile Chrome."""
     70         with chrome.Chrome() as cr:
     71             for benchmark in PAGE_CYCLER_BENCHMARKS:
     72                 self._try_page_cycler(cr, benchmark)
     73 
     74     def _try_page_cycler(self, cr, benchmark):
     75         """Try executing a page cycler and recover if browser dies.
     76 
     77         Navigates to the specified page_cycler, checks if the browser
     78         died while executing it and waits until browser recovers.
     79 
     80         @param cr: instance of chrome.Chrome class to control chrome.
     81         @param benchmark: page_cycler page to display.
     82         """
     83         if cr.did_browser_crash(
     84                 lambda: self._navigate_page_cycler(cr, benchmark)):
     85             logging.info('Browser died while navigating %s', benchmark)
     86             logging.info('Trying to continue...')
     87             cr.wait_for_browser_to_come_up()
     88 
     89 
     90     def _navigate_page_cycler(self, cr, benchmark):
     91         """Navigate to a specific page_cycler page.
     92 
     93         Navigates to the specified page_cycler and waits for the value
     94         of the __pc_done cookie to indicate it is done.
     95 
     96         @param cr: instance of chrome.Chrome class to control chrome.
     97         @param benchmark: page_cycler page to display.
     98         """
     99         PC_START_PAGE = 'data/page_cycler/%s/start.html?auto=1'
    100         PC_DONE_EXP = 'window.document.cookie.indexOf("__pc_done=1") >= 0'
    101         tab = cr.browser.tabs.New()
    102         try:
    103             tab.Activate()
    104             logging.info('Navigating to page cycler %s', benchmark)
    105             start_time = time.time()
    106             benchmark_start_page = PC_START_PAGE % benchmark
    107             tab.Navigate(FILE_URL_PREFIX + benchmark_start_page)
    108             tab.WaitForDocumentReadyStateToBeComplete(timeout=180)
    109             tab.WaitForJavaScriptCondition(PC_DONE_EXP, timeout=600)
    110             tab.Close()
    111             end_time = time.time()
    112             logging.info('Completed page cycler %s in %f seconds',
    113                          benchmark, end_time - start_time)
    114         except Exception as unk_exc:
    115             end_time = time.time()
    116             logging.info('After navigating %s for %f seconds got exception %s',
    117                          benchmark, end_time - start_time, str(unk_exc))
    118             traceback.print_exc(file=sys.stdout)
    119             raise
    120