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// Copyright 2017 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_METRICS_METRICS_ROTATION_SCHEDULER_H_
#define COMPONENTS_METRICS_METRICS_ROTATION_SCHEDULER_H_
#include "base/callback.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "components/metrics/metrics_scheduler.h"
namespace metrics {
// Scheduler task to drive a MetricsService object's uploading.
class MetricsRotationScheduler : public MetricsScheduler {
public:
// Creates MetricsRotationScheduler object with the given |rotation_callback|
// callback to call when log rotation should happen and |interval_callback|
// to determine the interval between rotations in steady state.
// |rotation_callback| must arrange to call RotationFinished on completion.
MetricsRotationScheduler(
const base::RepeatingClosure& rotation_callback,
const base::RepeatingCallback<base::TimeDelta(void)>& interval_callback,
bool fast_startup_for_testing);
~MetricsRotationScheduler() override;
// Callback from MetricsService when the startup init task has completed.
void InitTaskComplete();
// Callback from MetricsService when a triggered rotation finishes.
void RotationFinished();
protected:
enum InitSequence {
TIMER_FIRED_FIRST,
INIT_TASK_COMPLETED_FIRST,
INIT_SEQUENCE_ENUM_SIZE,
};
private:
// Record the init sequence order histogram.
virtual void LogMetricsInitSequence(InitSequence sequence);
// MetricsScheduler:
void TriggerTask() override;
// Whether the InitTaskComplete() callback has been called.
bool init_task_complete_;
// Whether the initial scheduled upload timer has fired before the init task
// has been completed.
bool waiting_for_init_task_complete_;
// Callback function used to get the standard upload time.
base::RepeatingCallback<base::TimeDelta(void)> upload_interval_callback_;
DISALLOW_COPY_AND_ASSIGN(MetricsRotationScheduler);
};
} // namespace metrics
#endif // COMPONENTS_METRICS_METRICS_ROTATION_SCHEDULER_H_
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