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// Copyright 2021 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SEGMENTATION_PLATFORM_INTERNAL_SIGNALS_SIGNAL_FILTER_PROCESSOR_H_
#define COMPONENTS_SEGMENTATION_PLATFORM_INTERNAL_SIGNALS_SIGNAL_FILTER_PROCESSOR_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/optimization_guide/proto/models.pb.h"
#include "components/segmentation_platform/internal/database/segment_info_database.h"
using optimization_guide::proto::OptimizationTarget;
namespace segmentation_platform {
class HistogramSignalHandler;
class UserActionSignalHandler;
// Responsible for listening to the metadata updates for the models and
// registers various signal handlers for the relevant UMA signals specified in
// the metadata.
class SignalFilterProcessor {
public:
SignalFilterProcessor(SegmentInfoDatabase* segment_database,
UserActionSignalHandler* user_action_signal_handler,
HistogramSignalHandler* histogram_signal_handler);
~SignalFilterProcessor();
// Disallow copy/assign.
SignalFilterProcessor(const SignalFilterProcessor&) = delete;
SignalFilterProcessor& operator=(const SignalFilterProcessor&) = delete;
// Called whenever the metadata about the models are updated. Registers
// handlers for the relevant signals specified in the metadata. If handlers
// are already registered, it will reset and register again with the new set
// of signals.
void OnSignalListUpdated();
// Called to enable or disable metrics collection for segmentation platform.
// This is often invoked early even before the signal list is obtained. Must
// be explicitly called on startup.
void EnableMetrics(bool enable_metrics);
private:
void FilterSignals(
std::unique_ptr<SegmentInfoDatabase::SegmentInfoList> segment_infos);
raw_ptr<SegmentInfoDatabase> segment_database_;
raw_ptr<UserActionSignalHandler> user_action_signal_handler_;
raw_ptr<HistogramSignalHandler> histogram_signal_handler_;
base::WeakPtrFactory<SignalFilterProcessor> weak_ptr_factory_{this};
};
} // namespace segmentation_platform
#endif // COMPONENTS_SEGMENTATION_PLATFORM_INTERNAL_SIGNALS_SIGNAL_FILTER_PROCESSOR_H_
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