def get_page_metrics_from_cached_session(self, page_url):
"""Returns a PageSessionMetrics domain object for a given page URL
while simulating a cached session i.e, a return user.
Note: This method is stand-alone and does not require
`get_page_session_metrics_for_url` to be called before it.
"""
server, proxy = self._setup_proxy_server()
driver = self._setup_driver(proxy=proxy, use_proxy=True)
# Fetch the page once. This leads to caching of various resources.
driver.get(page_url)
self._wait_until_page_load_is_finished()
# Start recording har data for the next page fetch.
proxy.new_har(page_url, options={'captureHeaders': True})
driver.get(page_url)
self._wait_until_page_load_is_finished()
har_dict = proxy.har
self._stop_proxy_server(server)
self._stop_driver(driver)
return perf_domain.PageSessionMetrics(page_session_stats=har_dict,
page_session_timings=None)
def get_page_timings_from_uncached_session(self, page_url):
"""Returns a PageSessionMetrics domain object initialized using
page load timings for a page URL.
"""
driver = self._setup_driver(proxy=None, use_proxy=False)
driver.get(page_url)
self._wait_until_page_load_is_finished()
page_session_timings = (
driver.execute_script("return window.performance"))
self._stop_driver(driver)
return perf_domain.PageSessionMetrics(
page_session_stats=None, page_session_timings=page_session_timings)
def get_page_metrics_from_uncached_session(self, page_url):
"""Returns a PageSessionMetrics domain object for a given page URL.
"""
server, proxy = self._setup_proxy_server()
driver = self._setup_driver(proxy=proxy, use_proxy=True)
proxy.new_har(page_url, options={'captureHeaders': True})
driver.get(page_url)
self._wait_until_page_load_is_finished()
har_dict = proxy.har
self._stop_proxy_server(server)
self._stop_driver(driver)
return perf_domain.PageSessionMetrics(page_session_stats=har_dict,
page_session_timings=None)
def get_page_timings_from_cached_session(self, page_url):
"""Returns a PageSessionMetrics domain object initialized using page
load timings for a page URL while simulating a cached session i.e, a
return user.
"""
driver = self._setup_driver(proxy=None, use_proxy=False)
# Fetch the page once. This leads to caching of various resources.
driver.get(page_url)
self._wait_until_page_load_is_finished()
driver.get(page_url)
self._wait_until_page_load_is_finished()
page_session_timings = (
driver.execute_script("return window.performance"))
self._stop_driver(driver)
return perf_domain.PageSessionMetrics(
page_session_stats=None, page_session_timings=page_session_timings)
