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      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 #ifndef UPDATE_ENGINE_UPDATE_MANAGER_REAL_CONFIG_PROVIDER_H_
     18 #define UPDATE_ENGINE_UPDATE_MANAGER_REAL_CONFIG_PROVIDER_H_
     19 
     20 #include <memory>
     21 #include <string>
     22 
     23 #include "update_engine/common/hardware_interface.h"
     24 #include "update_engine/update_manager/config_provider.h"
     25 #include "update_engine/update_manager/generic_variables.h"
     26 
     27 namespace chromeos_update_manager {
     28 
     29 // ConfigProvider concrete implementation.
     30 class RealConfigProvider : public ConfigProvider {
     31  public:
     32   explicit RealConfigProvider(
     33       chromeos_update_engine::HardwareInterface* hardware)
     34       : hardware_(hardware) {}
     35 
     36   // Initializes the provider and returns whether it succeeded.
     37   bool Init();
     38 
     39   Variable<bool>* var_is_oobe_enabled() override {
     40     return var_is_oobe_enabled_.get();
     41   }
     42 
     43  private:
     44   friend class UmRealConfigProviderTest;
     45 
     46   // Used for testing. Sets the root prefix, which is by default "". Call this
     47   // method before calling Init() in order to mock out the place where the files
     48   // are being read from.
     49   void SetRootPrefix(const std::string& prefix) {
     50     root_prefix_ = prefix;
     51   }
     52 
     53   std::unique_ptr<ConstCopyVariable<bool>> var_is_oobe_enabled_;
     54 
     55   chromeos_update_engine::HardwareInterface* hardware_;
     56 
     57   // Prefix to prepend to the file paths. Useful for testing.
     58   std::string root_prefix_;
     59 
     60   DISALLOW_COPY_AND_ASSIGN(RealConfigProvider);
     61 };
     62 
     63 }  // namespace chromeos_update_manager
     64 
     65 #endif  // UPDATE_ENGINE_UPDATE_MANAGER_REAL_CONFIG_PROVIDER_H_
     66