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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/page_load_metrics/observers/scheme_page_load_metrics_observer.h"
#include "base/metrics/histogram_functions.h"
#include "components/page_load_metrics/browser/page_load_metrics_util.h"
#include "content/public/browser/navigation_handle.h"
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
SchemePageLoadMetricsObserver::OnStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url,
bool started_in_foreground) {
return started_in_foreground ? CONTINUE_OBSERVING : STOP_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
SchemePageLoadMetricsObserver::OnPrerenderStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) {
// This observer is interested in comparing performance among HTTP and HTTPS.
// Including prerendering cases can be another factor to differentiate
// performance, and it will be a noise for the original goal.
return STOP_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
SchemePageLoadMetricsObserver::OnCommit(
content::NavigationHandle* navigation_handle) {
// Capture committed transition type.
transition_ = navigation_handle->GetPageTransition();
if (navigation_handle->GetURL().scheme() == url::kHttpScheme ||
navigation_handle->GetURL().scheme() == url::kHttpsScheme) {
return CONTINUE_OBSERVING;
}
return STOP_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
SchemePageLoadMetricsObserver::OnFencedFramesStart(
content::NavigationHandle* navigation_handle,
const GURL& currently_committed_url) {
// This class is interested in events that are dispatched only for the primary
// page or preprocessed by PageLoadTracker to be per-outermost page. So, no
// need to forward events at the observer layer.
return STOP_OBSERVING;
}
page_load_metrics::PageLoadMetricsObserver::ObservePolicy
SchemePageLoadMetricsObserver::OnHidden(
const page_load_metrics::mojom::PageLoadTiming& timing) {
return STOP_OBSERVING;
}
void SchemePageLoadMetricsObserver::OnParseStart(
const page_load_metrics::mojom::PageLoadTiming& timing) {
if (GetDelegate().GetUrl().scheme() == url::kHttpScheme) {
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTP.ParseTiming.NavigationToParseStart",
timing.parse_timing->parse_start.value());
} else if (GetDelegate().GetUrl().scheme() == url::kHttpsScheme) {
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTPS.ParseTiming.NavigationToParseStart",
timing.parse_timing->parse_start.value());
}
}
void SchemePageLoadMetricsObserver::OnFirstContentfulPaintInPage(
const page_load_metrics::mojom::PageLoadTiming& timing) {
DCHECK(GetDelegate().GetUrl().scheme() == url::kHttpScheme ||
GetDelegate().GetUrl().scheme() == url::kHttpsScheme);
base::TimeDelta fcp = timing.paint_timing->first_contentful_paint.value();
base::TimeDelta parse_start_to_fcp =
fcp - timing.parse_timing->parse_start.value();
if (GetDelegate().GetUrl().scheme() == url::kHttpScheme) {
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTP.PaintTiming."
"NavigationToFirstContentfulPaint",
fcp);
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTP.PaintTiming."
"ParseStartToFirstContentfulPaint",
parse_start_to_fcp);
} else {
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTPS.PaintTiming."
"NavigationToFirstContentfulPaint",
fcp);
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTPS.PaintTiming."
"ParseStartToFirstContentfulPaint",
parse_start_to_fcp);
}
}
void SchemePageLoadMetricsObserver::OnFirstMeaningfulPaintInMainFrameDocument(
const page_load_metrics::mojom::PageLoadTiming& timing) {
if (GetDelegate().GetUrl().scheme() == url::kHttpScheme) {
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTP.Experimental.PaintTiming."
"NavigationToFirstMeaningfulPaint",
timing.paint_timing->first_meaningful_paint.value());
} else if (GetDelegate().GetUrl().scheme() == url::kHttpsScheme) {
PAGE_LOAD_HISTOGRAM(
"PageLoad.Clients.Scheme.HTTPS.Experimental.PaintTiming."
"NavigationToFirstMeaningfulPaint",
timing.paint_timing->first_meaningful_paint.value());
}
}
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