def __init__(self, trace, ad_rules=None, tracking_rules=None):
"""Constructor.
Args:
trace: (LoadingTrace) a loading trace.
ad_rules: ([str]) List of ad filtering rules.
tracking_rules: ([str]) List of tracking filtering rules.
"""
self.trace = trace
navigation_start_events = trace.tracing_track.GetMatchingEvents(
'blink.user_timing', 'navigationStart')
self._navigation_start_msec = min(e.start_msec
for e in navigation_start_events)
self._dns_requests, self._dns_cost_msec = metrics.DnsRequestsAndCost(
trace)
self._connection_stats = metrics.ConnectionMetrics(trace)
self._user_lens_reports = {}
plt_lens = PLTLens(self.trace)
first_text_paint_lens = FirstTextPaintLens(self.trace)
first_contentful_paint_lens = FirstContentfulPaintLens(self.trace)
first_significant_paint_lens = FirstSignificantPaintLens(self.trace)
activity = ActivityLens(trace)
network_lens = NetworkActivityLens(self.trace)
for key, user_lens in [['plt', plt_lens],
['first_text', first_text_paint_lens],
['contentful', first_contentful_paint_lens],
['significant', first_significant_paint_lens]]:
self._user_lens_reports[key] = PerUserLensReport(
self.trace, user_lens, activity, network_lens,
self._navigation_start_msec)
self._transfer_size = metrics.TotalTransferSize(trace)[1]
self._request_count = len(trace.request_track.GetEvents())
content_lens = ContentClassificationLens(trace, ad_rules or [],
tracking_rules or [])
has_ad_rules = bool(ad_rules)
has_tracking_rules = bool(tracking_rules)
self._ad_report = self._AdRequestsReport(trace, content_lens,
has_ad_rules,
has_tracking_rules)
self._ads_cost = self._AdsAndTrackingCpuCost(
self._navigation_start_msec,
(self._navigation_start_msec +
self._user_lens_reports['plt'].GenerateReport()['ms']),
content_lens, activity, has_tracking_rules or has_ad_rules)
self._queue_stats = self._ComputeQueueStats(QueuingLens(trace))
def _ActivityLens(self, requests, raw_events):
loading_trace = test_utils.LoadingTraceFromEvents(
requests, None, raw_events)
return ActivityLens(loading_trace)
