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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"""
6Run a pre-defined set of pages on the DUT for Chrome profile collection.
7
8The purpose of this test is to exercise chrome with a meaningful set
9of pages while a profile of Chrome is captured. It also aims at using
10the minimum set of functionality from Telemetry since Telemetry is not
11very stable on ChromeOS at this point.
12
13This test is designed to be called from the telemetry_AFDOGenerate
14server test. The server test will start the "perf" profiling tool on
15the DUT before starting this test. It will also capture the chrome
16profile and upload it to Google Storage to be used for an optimized
17build of Chrome.
18"""
19
20import logging
21import os
22import sys
23import time
24import traceback
25
26from autotest_lib.client.common_lib.cros import chrome
27from autotest_lib.client.bin import test
28from autotest_lib.client.cros import httpd
29
30# List of page cycler pages to use for Chrome profiling
31PAGE_CYCLER_BENCHMARKS = [
32        'alexa_us',
33        'bloat',
34        'dhtml',
35        'dom',
36        'intl1',
37        'intl2',
38        'morejs',
39        'morejsnp',
40        'moz',
41        'moz2' ]
42
43HTTP_PORT = 8000
44FILE_URL_PREFIX = 'http://localhost:%d/test_src/' % HTTP_PORT
45
46class 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