chrome/browser/metrics/variations/variations_request_scheduler.cc

   1 // Copyright (c) 2013 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 #include "chrome/browser/metrics/variations/variations_request_scheduler.h"
   6
   7 namespace chrome_variations {
   8
   9 VariationsRequestScheduler::VariationsRequestScheduler(
  10     const base::Closure& task) : task_(task) {
  11 }
  12
  13 VariationsRequestScheduler::~VariationsRequestScheduler() {
  14 }
  15
  16 void VariationsRequestScheduler::Start() {
  17   // Time between regular seed fetches, in hours.
  18   const int kFetchPeriodHours = 5;
  19   task_.Run();
  20   timer_.Start(FROM_HERE, base::TimeDelta::FromHours(kFetchPeriodHours), task_);
  21 }
  22
  23 void VariationsRequestScheduler::Reset() {
  24   if (timer_.IsRunning())
  25     timer_.Reset();
  26   one_shot_timer_.Stop();
  27 }
  28
  29 void VariationsRequestScheduler::ScheduleFetchShortly() {
  30   // Reset the regular timer to avoid it triggering soon after.
  31   Reset();
  32   // The delay before attempting a fetch shortly, in minutes.
  33   const int kFetchShortlyDelayMinutes = 5;
  34   one_shot_timer_.Start(FROM_HERE,
  35                         base::TimeDelta::FromMinutes(kFetchShortlyDelayMinutes),
  36                         task_);
  37 }
  38
  39 base::Closure VariationsRequestScheduler::task() const {
  40   return task_;
  41 }
  42
  43 #if !defined(OS_ANDROID) && !defined(OS_IOS)
  44 // static
  45 VariationsRequestScheduler* VariationsRequestScheduler::Create(
  46     const base::Closure& task,
  47     PrefService* local_state) {
  48   return new VariationsRequestScheduler(task);
  49 }
  50 #endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
  51
  52 }  // namespace chrome_variations