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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_WEBUI_METRICS_REPORTER_METRICS_REPORTER_H_
#define CHROME_BROWSER_UI_WEBUI_METRICS_REPORTER_METRICS_REPORTER_H_
#include <optional>
#include <string>
#include "base/time/time.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "ui/webui/resources/js/metrics_reporter/metrics_reporter.mojom.h"
class MetricsReporterClient;
class MetricsReporterTest;
// A WebUI utility that measures time between marks.
// See usage at ui/webui/resources/js/metrics_reporter/metrics_reporter.ts
class MetricsReporter : public metrics_reporter::mojom::PageMetricsHost {
public:
MetricsReporter();
~MetricsReporter() override;
using MeasureCallback = base::OnceCallback<void(base::TimeDelta delta)>;
using HasMarkCallback = base::OnceCallback<void(bool)>;
virtual void Mark(const std::string& name);
virtual void Measure(const std::string& start_mark, MeasureCallback callback);
virtual void Measure(const std::string& start_mark,
const std::string& end_mark,
MeasureCallback callback);
virtual void HasMark(const std::string& name, HasMarkCallback callback);
virtual bool HasLocalMark(const std::string& name);
virtual void ClearMark(const std::string& name);
void BindInterface(
mojo::PendingReceiver<metrics_reporter::mojom::PageMetricsHost> receiver);
protected:
// metrics_reporter::mojom::PageMetricsHost:
void OnPageRemoteCreated(
mojo::PendingRemote<metrics_reporter::mojom::PageMetrics> page) override;
void OnGetMark(const std::string& name, OnGetMarkCallback callback) override;
void OnClearMark(const std::string& name) override;
void OnUmaReportTime(const std::string& name, base::TimeDelta time) override;
private:
friend MetricsReporterClient;
friend MetricsReporterTest;
void MeasureInternal(const std::string& start_mark,
std::optional<std::string> end_mark,
MeasureCallback callback);
std::map<std::string, base::TimeTicks> marks_;
mojo::Remote<metrics_reporter::mojom::PageMetrics> page_;
mojo::Receiver<metrics_reporter::mojom::PageMetricsHost> host_{this};
};
#endif // CHROME_BROWSER_UI_WEBUI_METRICS_REPORTER_METRICS_REPORTER_H_
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