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| 1 // Copyright (c) 2010 The Chromium OS 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 #ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_PREFS_INTERFACE_H__ |
| 6 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_PREFS_INTERFACE_H__ |
| 7 |
| 8 #include <string> |
| 9 |
| 10 namespace chromeos_update_engine { |
| 11 |
| 12 // The prefs interface allows access to a persistent preferences |
| 13 // store. The two reasons for providing this as an interface are |
| 14 // testing as well as easier switching to a new implementation in the |
| 15 // future, if necessary. |
| 16 |
| 17 class PrefsInterface { |
| 18 public: |
| 19 // Gets a string |value| associated with |key|. Returns true on |
| 20 // success, false on failure (including when the |key| is not |
| 21 // present in the store). |
| 22 virtual bool GetString(const std::string& key, std::string* value) = 0; |
| 23 |
| 24 // Associates |key| with a string |value|. Returns true on success, |
| 25 // false otherwise. |
| 26 virtual bool SetString(const std::string& key, const std::string& value) = 0; |
| 27 |
| 28 // Gets an int64 |value| associated with |key|. Returns true on |
| 29 // success, false on failure (including when the |key| is not |
| 30 // present in the store). |
| 31 virtual bool GetInt64(const std::string& key, int64_t* value) = 0; |
| 32 |
| 33 // Associates |key| with an int64 |value|. Returns true on success, |
| 34 // false otherwise. |
| 35 virtual bool SetInt64(const std::string& key, const int64_t value) = 0; |
| 36 }; |
| 37 |
| 38 } // namespace chromeos_update_engine |
| 39 |
| 40 #endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_PREFS_INTERFACE_H__ |
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