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_mobile.h"
6
7#include "base/prefs/pref_service.h"
8#include "chrome/common/pref_names.h"
9
10namespace chrome_variations {
11
12namespace {
13
14// Time between seed fetches, in hours.
15const int kSeedFetchPeriodHours = 5;
16
17}  // namespace
18
19VariationsRequestSchedulerMobile::VariationsRequestSchedulerMobile(
20    const base::Closure& task,
21    PrefService* local_state) :
22  VariationsRequestScheduler(task), local_state_(local_state) {
23}
24
25VariationsRequestSchedulerMobile::~VariationsRequestSchedulerMobile() {
26}
27
28void VariationsRequestSchedulerMobile::Start() {
29  // Check the time of the last request. If it has been longer than the fetch
30  // period, run the task. Otherwise, do nothing. Note that no future requests
31  // are scheduled since it is unlikely that the mobile process would live long
32  // enough for the timer to fire.
33  const base::Time last_fetch_time = base::Time::FromInternalValue(
34      local_state_->GetInt64(prefs::kVariationsLastFetchTime));
35  if (base::Time::Now() >
36      last_fetch_time + base::TimeDelta::FromHours(kSeedFetchPeriodHours)) {
37    task().Run();
38  }
39}
40
41void VariationsRequestSchedulerMobile::Reset() {
42}
43
44// static
45VariationsRequestScheduler* VariationsRequestScheduler::Create(
46    const base::Closure& task,
47    PrefService* local_state) {
48  return new VariationsRequestSchedulerMobile(task, local_state);
49}
50
51}  // namespace chrome_variations
52