blob: 171e56531c83cbf290582d4c40b861a75176890b [file] [log] [blame]
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import logging
import time
from common import chrome_proxy_metrics
from common import network_metrics
from common.chrome_proxy_metrics import ChromeProxyMetricException
from telemetry.page import legacy_page_test
from telemetry.value import scalar
class ChromeProxyMetric(network_metrics.NetworkMetric):
"""A Chrome proxy timeline metric."""
def __init__(self):
super(ChromeProxyMetric, self).__init__()
self.compute_data_saving = True
def SetEvents(self, events):
"""Used for unittest."""
self._events = events
def ResponseFromEvent(self, event):
return chrome_proxy_metrics.ChromeProxyResponse(event)
def AddResults(self, tab, results):
raise NotImplementedError
def AddResultsForDataSaving(self, tab, results):
resources_via_proxy = 0
resources_from_cache = 0
resources_direct = 0
super(ChromeProxyMetric, self).AddResults(tab, results)
for resp in self.IterResponses(tab):
if resp.response.served_from_cache:
resources_from_cache += 1
if resp.HasChromeProxyViaHeader():
resources_via_proxy += 1
else:
resources_direct += 1
if resources_from_cache + resources_via_proxy + resources_direct == 0:
raise ChromeProxyMetricException, (
'Expected at least one response, but zero responses were received.')
results.AddValue(scalar.ScalarValue(
results.current_page, 'resources_via_proxy', 'count',
resources_via_proxy))
results.AddValue(scalar.ScalarValue(
results.current_page, 'resources_from_cache', 'count',
resources_from_cache))
results.AddValue(scalar.ScalarValue(
results.current_page, 'resources_direct', 'count', resources_direct))
def AddResultsForLatency(self, tab, results):
# TODO(bustamante): This is a hack to workaround crbug.com/467174,
# once fixed just pull down window.performance.timing object and
# reference that everywhere.
load_event_start = tab.EvaluateJavaScript(
'window.performance.timing.loadEventStart')
navigation_start = tab.EvaluateJavaScript(
'window.performance.timing.navigationStart')
dom_content_loaded_event_start = tab.EvaluateJavaScript(
'window.performance.timing.domContentLoadedEventStart')
fetch_start = tab.EvaluateJavaScript(
'window.performance.timing.fetchStart')
request_start = tab.EvaluateJavaScript(
'window.performance.timing.requestStart')
domain_lookup_end = tab.EvaluateJavaScript(
'window.performance.timing.domainLookupEnd')
domain_lookup_start = tab.EvaluateJavaScript(
'window.performance.timing.domainLookupStart')
connect_end = tab.EvaluateJavaScript(
'window.performance.timing.connectEnd')
connect_start = tab.EvaluateJavaScript(
'window.performance.timing.connectStart')
response_end = tab.EvaluateJavaScript(
'window.performance.timing.responseEnd')
response_start = tab.EvaluateJavaScript(
'window.performance.timing.responseStart')
# NavigationStart relative markers in milliseconds.
load_start = (float(load_event_start) - navigation_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'load_start', 'ms', load_start))
dom_content_loaded_start = (
float(dom_content_loaded_event_start) - navigation_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'dom_content_loaded_start', 'ms',
dom_content_loaded_start))
fetch_start = (float(fetch_start) - navigation_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'fetch_start', 'ms', fetch_start,
important=False))
request_start = (float(request_start) - navigation_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'request_start', 'ms', request_start,
important=False))
response_start = (float(response_start) - navigation_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'response_start', 'ms', response_start,
important=False))
response_end = (float(response_end) - navigation_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'response_end', 'ms', response_end,
important=False))
# Phase measurements in milliseconds.
domain_lookup_duration = (float(domain_lookup_end) - domain_lookup_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'domain_lookup_duration', 'ms',
domain_lookup_duration, important=False))
connect_duration = (float(connect_end) - connect_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'connect_duration', 'ms', connect_duration,
important=False))
request_duration = (float(response_start) - request_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'request_duration', 'ms', request_duration,
important=False))
response_duration = (float(response_end) - response_start)
results.AddValue(scalar.ScalarValue(
results.current_page, 'response_duration', 'ms', response_duration,
important=False))