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// Copyright 2024 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/optimization_guide/core/model_execution/usage_tracker.h"
#include "base/strings/to_string.h"
#include "base/task/single_thread_task_runner.h"
#include "base/trace_event/trace_event.h"
#include "components/optimization_guide/core/model_execution/model_execution_prefs.h"
#include "components/optimization_guide/core/model_execution/model_execution_util.h"
#include "components/optimization_guide/core/model_execution/on_device_features.h"
#include "components/optimization_guide/public/mojom/model_broker.mojom-data-view.h"
#include "components/prefs/pref_service.h"
namespace optimization_guide {
UsageTracker::UsageTracker(PrefService* local_state)
: local_state_(local_state) {
DCHECK(local_state_);
}
UsageTracker::~UsageTracker() = default;
void UsageTracker::OnDeviceEligibleFeatureUsed(mojom::OnDeviceFeature feature) {
TRACE_EVENT("optimization_guide", "UsageTracker::OnDeviceEligibleFeatureUsed",
"feature", base::ToString(feature));
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
bool was_first_usage = !WasOnDeviceEligibleFeatureRecentlyUsed(feature);
model_execution::prefs::RecordFeatureUsage(local_state_, feature);
for (auto& o : observers_) {
o.OnDeviceEligibleFeatureUsed(feature);
}
if (was_first_usage) {
for (auto& o : observers_) {
o.OnDeviceEligibleFeatureFirstUsed(feature);
}
}
}
bool UsageTracker::WasOnDeviceEligibleFeatureRecentlyUsed(
mojom::OnDeviceFeature feature) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return model_execution::prefs::WasFeatureRecentlyUsed(&*local_state_,
feature);
}
bool UsageTracker::WasAnyOnDeviceEligibleFeatureRecentlyUsed() const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
return std::ranges::any_of(
OnDeviceFeatureSet::All(), [&](mojom::OnDeviceFeature feature) {
return WasOnDeviceEligibleFeatureRecentlyUsed(feature);
});
}
void UsageTracker::AddObserver(Observer* observer) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
observers_.AddObserver(observer);
}
void UsageTracker::RemoveObserver(Observer* observer) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
observers_.RemoveObserver(observer);
}
} // namespace optimization_guide
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