def _GetBrowserMainEntryTime(self, tab):
"""Returns the main entry time (in ms) of the browser."""
histogram_type = histogram_util.BROWSER_HISTOGRAM
high_bytes = histogram_util.GetHistogramSum(
histogram_type, 'Startup.BrowserMainEntryTimeAbsoluteHighWord',
tab)
low_bytes = histogram_util.GetHistogramSum(
histogram_type, 'Startup.BrowserMainEntryTimeAbsoluteLowWord', tab)
if high_bytes == 0 and low_bytes == 0:
return None
return (int(high_bytes) << 32) | (int(low_bytes) << 1)
def AddResultsForPingback(self, tab, results):
# Force the pingback by loading a new page.
tab.Navigate('http://check.googlezip.net/test.html')
histogram_type = histogram_util.BROWSER_HISTOGRAM
# This histogram should be synchronously created when the Navigate occurs.
attempted = histogram_util.GetHistogramSum(
histogram_type,
'DataReductionProxy.Pingback.Attempted',
tab)
# Verify that a pingback URLFetcher was created.
if attempted != 1:
raise ChromeProxyMetricException, (
'Expected one pingback attempt, but '
'received %d.' % attempted)
count = 0
seconds_slept = 0
# This test relies on the proxy server responding to the pingback after
# receiving it. This should very likely take under 10 seconds for the
# integration test.
max_seconds_to_sleep = 10
while count < 1 and seconds_slept < max_seconds_to_sleep:
# This histogram will be created when the URLRequest either fails or
# succeeds.
count = histogram_util.GetHistogramCount(
histogram_type,
'DataReductionProxy.Pingback.Succeeded',
tab)
if count < 1:
time.sleep(1)
seconds_slept += 1
# The pingback should always succeed. Successful pingbacks contribute to the
# sum of samples in the histogram, whereas failures only contribute to the
# count of samples. Since DataReductionProxy.Pingback.Succeeded is a boolean
# histogram, the sum of all samples in that histogram is equal to the
# number of successful pingbacks.
succeeded = histogram_util.GetHistogramSum(
histogram_type,
'DataReductionProxy.Pingback.Succeeded',
tab)
if succeeded != 1 or count != 1:
raise ChromeProxyMetricException, (
'Expected 1 pingback success and no failures, but '
'there were %d succesful pingbacks and %d failed pingback attempts'
% (succeeded, count - succeeded))
results.AddValue(scalar.ScalarValue(
results.current_page, 'attempted', 'count', attempted))
results.AddValue(scalar.ScalarValue(
results.current_page, 'succeeded_count', 'count', count))
results.AddValue(scalar.ScalarValue(
results.current_page, 'succeeded_sum', 'count', succeeded))
def AddResults(self, tab, results):
"""Adds the number of times that the keychain was accessed to |results|.
Has no effect on non-Mac platforms."""
if sys.platform != 'darwin':
return
access_count = histogram_util.GetHistogramSum(
histogram_util.BROWSER_HISTOGRAM, KeychainMetric.HISTOGRAM_NAME, tab)
results.AddValue(scalar.ScalarValue(
results.current_page, KeychainMetric.DISPLAY_NAME, 'count',
access_count))
def AddResultsForQuicTransaction(self, tab, results):
histogram_type = histogram_util.BROWSER_HISTOGRAM
# This histogram should be synchronously created when the Navigate occurs.
# Verify that histogram DataReductionProxy.Quic.ProxyStatus has no samples
# in bucket >=1.
fail_counts_proxy_status = histogram_util.GetHistogramSum(
histogram_type,
'DataReductionProxy.Quic.ProxyStatus',
tab)
if fail_counts_proxy_status != 0:
raise ChromeProxyMetricException, (
'fail_counts_proxy_status is %d.' % fail_counts_proxy_status)
# Verify that histogram DataReductionProxy.Quic.ProxyStatus has at least 1
# sample. This sample must be in bucket 0 (QUIC_PROXY_STATUS_AVAILABLE).
success_counts_proxy_status = histogram_util.GetHistogramCount(
histogram_type,
'DataReductionProxy.Quic.ProxyStatus',
tab)
if success_counts_proxy_status <= 0:
raise ChromeProxyMetricException, (
'success_counts_proxy_status is %d.' % success_counts_proxy_status)
# Navigate to one more page to ensure that established QUIC connection
# is used for the next request. Give 1 second extra headroom for the QUIC
# connection to be established.
time.sleep(1)
tab.Navigate('http://check.googlezip.net/test.html')
proxy_usage_histogram_json = histogram_util.GetHistogram(histogram_type,
'Net.QuicAlternativeProxy.Usage',
tab)
proxy_usage_histogram = json.loads(proxy_usage_histogram_json)
# Bucket ALTERNATIVE_PROXY_USAGE_NO_RACE should have at least one sample.
if proxy_usage_histogram['buckets'][0]['count'] <= 0:
raise ChromeProxyMetricException, (
'Number of samples in ALTERNATIVE_PROXY_USAGE_NO_RACE bucket is %d.'
% proxy_usage_histogram['buckets'][0]['count'])
results.AddValue(scalar.ScalarValue(
results.current_page, 'fail_counts_proxy_status', 'count',
fail_counts_proxy_status))
results.AddValue(scalar.ScalarValue(
results.current_page, 'success_counts_proxy_status', 'count',
success_counts_proxy_status))