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. 37 CurrDateVariable(const string& name, ClockInterface* clock) 38 : Variable<Time>(name, TimeDelta::FromHours(1)), clock_(clock) {} 39 40 protected: 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 Time* now = new Time(); 47 bool success = Time::FromLocalExploded(now_exp, now); 48 DCHECK(success); 49 return now; 50 } 51 52 private: 53 ClockInterface* clock_; 54 55 DISALLOW_COPY_AND_ASSIGN(CurrDateVariable); 56 }; 57 58 // A variable returning the current hour in local time. 59 class CurrHourVariable : public Variable<int> { 60 public: 61 // TODO(garnold) Turn this into an async variable with the needed callback 62 // logic for when it value changes. 63 CurrHourVariable(const string& name, ClockInterface* clock) 64 : Variable<int>(name, TimeDelta::FromMinutes(5)), clock_(clock) {} 65 66 protected: 67 virtual const int* GetValue(TimeDelta /* timeout */, 68 string* /* errmsg */) { 69 Time::Exploded exploded; 70 clock_->GetWallclockTime().LocalExplode(&exploded); 71 return new int(exploded.hour); 72 } 73 74 private: 75 ClockInterface* clock_; 76 77 DISALLOW_COPY_AND_ASSIGN(CurrHourVariable); 78 }; 79 80 bool RealTimeProvider::Init() { 81 var_curr_date_.reset(new CurrDateVariable("curr_date", clock_)); 82 var_curr_hour_.reset(new CurrHourVariable("curr_hour", clock_)); 83 return true; 84 } 85 86 } // namespace chromeos_update_manager 87
