components/ukm/ukm_rotation_scheduler.h

   1 // Copyright 2017 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_UKM_METRICS_REPORTING_SCHEDULER_H_
   6 #define COMPONENTS_UKM_METRICS_REPORTING_SCHEDULER_H_
   7
   8 #include "base/time/time.h"
   9 #include "components/metrics/metrics_rotation_scheduler.h"
  10
  11 namespace ukm {
  12
  13 // Scheduler to drive a UkmService object's log rotations.
  14 class UkmRotationScheduler : public metrics::MetricsRotationScheduler {
  15  public:
  16   // Creates UkmRotationScheduler object with the given |rotation_callback|
  17   // callback to call when log rotation should happen and |interval_callback|
  18   // to determine the interval between rotations in steady state.
  19   UkmRotationScheduler(
  20       const base::Closure& rotation_callback,
  21       const base::Callback<base::TimeDelta(void)>& interval_callback);
  22   ~UkmRotationScheduler() override;
  23
  24  private:
  25   // Record the init sequence order histogram.
  26   void LogMetricsInitSequence(InitSequence sequence) override;
  27
  28   DISALLOW_COPY_AND_ASSIGN(UkmRotationScheduler);
  29 };
  30
  31 }  // namespace ukm
  32
  33 #endif  // COMPONENTS_UKM_METRICS_REPORTING_SCHEDULER_H_