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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/unified_consent/msbb_session_durations_metrics_recorder.h"
#include <string>
#include <string_view>
#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "base/time/time.h"
namespace unified_consent {
namespace {
base::TimeDelta SubtractInactiveTime(base::TimeDelta total_length,
base::TimeDelta inactive_time) {
// Subtract any time the user was inactive from our session length. If this
// ends up giving the session negative length, which can happen if the feature
// state changed after the user became inactive, log the length as 0.
base::TimeDelta session_length = total_length - inactive_time;
if (session_length.is_negative()) {
session_length = base::TimeDelta();
}
return session_length;
}
void LogDuration(std::string_view histogram_suffix,
base::TimeDelta session_length) {
base::UmaHistogramCustomTimes(
base::StrCat({"Session.TotalDurationMax1Day.", histogram_suffix}),
session_length, base::Milliseconds(1), base::Hours(24), 50);
}
} // namespace
MsbbSessionDurationsMetricsRecorder::MsbbSessionDurationsMetricsRecorder(
PrefService* pref_service)
: consent_helper_(
UrlKeyedDataCollectionConsentHelper::
NewAnonymizedDataCollectionConsentHelper(pref_service)),
last_msbb_enabled_(consent_helper_->IsEnabled()) {
consent_helper_->AddObserver(this);
}
MsbbSessionDurationsMetricsRecorder::~MsbbSessionDurationsMetricsRecorder() {
DCHECK(!total_session_timer_) << "Missing a call to OnSessionEnded().";
consent_helper_->RemoveObserver(this);
}
void MsbbSessionDurationsMetricsRecorder::OnSessionStarted(
base::TimeTicks session_start) {
total_session_timer_ = std::make_unique<base::ElapsedTimer>();
msbb_state_timer_ = std::make_unique<base::ElapsedTimer>();
}
void MsbbSessionDurationsMetricsRecorder::OnSessionEnded(
base::TimeDelta session_length) {
if (!total_session_timer_) {
// If there was no active session, just ignore this call.
return;
}
CHECK(msbb_state_timer_);
if (session_length.is_zero()) {
// During Profile teardown, this method is called with a |session_length|
// of zero.
session_length = total_session_timer_->Elapsed();
}
base::TimeDelta total_session_time = total_session_timer_->Elapsed();
base::TimeDelta msbb_state_session_time = msbb_state_timer_->Elapsed();
total_session_timer_.reset();
msbb_state_timer_.reset();
base::TimeDelta total_inactivity_time = total_session_time - session_length;
LogMsbbDuration(
last_msbb_enabled_,
SubtractInactiveTime(msbb_state_session_time, total_inactivity_time));
}
void MsbbSessionDurationsMetricsRecorder::
OnUrlKeyedDataCollectionConsentStateChanged(
UrlKeyedDataCollectionConsentHelper* consent_helper) {
CHECK_EQ(consent_helper_.get(), consent_helper);
bool new_msbb_state = consent_helper_->IsEnabled();
if (last_msbb_enabled_ == new_msbb_state) {
return;
}
// If there's an ongoing session, record it and start a new one.
if (msbb_state_timer_) {
LogMsbbDuration(last_msbb_enabled_, msbb_state_timer_->Elapsed());
msbb_state_timer_ = std::make_unique<base::ElapsedTimer>();
}
last_msbb_enabled_ = new_msbb_state;
}
// static
void MsbbSessionDurationsMetricsRecorder::LogMsbbDuration(
bool msbb_enabled,
base::TimeDelta session_length) {
LogDuration(msbb_enabled ? "WithMsbb" : "WithoutMsbb", session_length);
}
} // namespace unified_consent
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