1 //
2 // Copyright (C) 2014 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16
17 #include "update_engine/update_manager/real_time_provider.h"
18
19 #include <string>
20
21 #include <base/time/time.h>
22
23 #include "update_engine/common/clock_interface.h"
24
25 using base::Time;
26 using base::TimeDelta;
27 using chromeos_update_engine::ClockInterface;
28 using std::string;
29
30 namespace chromeos_update_manager {
31
32 // A variable returning the current date.
33 class CurrDateVariable : public Variable<Time> {
34 public:
35 // TODO(garnold) Turn this into an async variable with the needed callback
36 // logic for when it value changes.
CurrDateVariable(const string & name,ClockInterface * clock)37 CurrDateVariable(const string& name, ClockInterface* clock)
38 : Variable<Time>(name, TimeDelta::FromHours(1)), clock_(clock) {}
39
40 protected:
GetValue(TimeDelta,string *)41 virtual const Time* GetValue(TimeDelta /* timeout */,
42 string* /* errmsg */) {
43 Time::Exploded now_exp;
44 clock_->GetWallclockTime().LocalExplode(&now_exp);
45 now_exp.hour = now_exp.minute = now_exp.second = now_exp.millisecond = 0;
46 return new Time(Time::FromLocalExploded(now_exp));
47 }
48
49 private:
50 ClockInterface* clock_;
51
52 DISALLOW_COPY_AND_ASSIGN(CurrDateVariable);
53 };
54
55 // A variable returning the current hour in local time.
56 class CurrHourVariable : public Variable<int> {
57 public:
58 // TODO(garnold) Turn this into an async variable with the needed callback
59 // logic for when it value changes.
CurrHourVariable(const string & name,ClockInterface * clock)60 CurrHourVariable(const string& name, ClockInterface* clock)
61 : Variable<int>(name, TimeDelta::FromMinutes(5)), clock_(clock) {}
62
63 protected:
GetValue(TimeDelta,string *)64 virtual const int* GetValue(TimeDelta /* timeout */,
65 string* /* errmsg */) {
66 Time::Exploded exploded;
67 clock_->GetWallclockTime().LocalExplode(&exploded);
68 return new int(exploded.hour);
69 }
70
71 private:
72 ClockInterface* clock_;
73
74 DISALLOW_COPY_AND_ASSIGN(CurrHourVariable);
75 };
76
Init()77 bool RealTimeProvider::Init() {
78 var_curr_date_.reset(new CurrDateVariable("curr_date", clock_));
79 var_curr_hour_.reset(new CurrHourVariable("curr_hour", clock_));
80 return true;
81 }
82
83 } // namespace chromeos_update_manager
84