rlz/chromeos/lib/rlz_value_store_chromeos.h

   1 // Copyright (c) 2012 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 #ifndef RLZ_CHROMEOS_LIB_RLZ_VALUE_STORE_CHROMEOS_H_
   6 #define RLZ_CHROMEOS_LIB_RLZ_VALUE_STORE_CHROMEOS_H_
   7
   8 #include "base/files/file_path.h"
   9 #include "base/threading/non_thread_safe.h"
  10 #include "base/values.h"
  11 #include "rlz/lib/rlz_value_store.h"
  12
  13 namespace base {
  14 class ListValue;
  15 class SequencedTaskRunner;
  16 class Value;
  17 }
  18
  19 namespace rlz_lib {
  20
  21 // An implementation of RlzValueStore for ChromeOS.
  22 class RlzValueStoreChromeOS : public RlzValueStore,
  23                               public base::NonThreadSafe {
  24  public:
  25   // // Sets the task runner that will be used by ImportantFileWriter for write
  26   // // operations.
  27   // static void SetFileTaskRunner(base::SequencedTaskRunner* file_task_runner);
  28
  29   // Creates new instance and synchronously reads data from file.
  30   RlzValueStoreChromeOS(const base::FilePath& store_path);
  31   ~RlzValueStoreChromeOS() override;
  32
  33   // RlzValueStore overrides:
  34   bool HasAccess(AccessType type) override;
  35
  36   bool WritePingTime(Product product, int64 time) override;
  37   bool ReadPingTime(Product product, int64* time) override;
  38   bool ClearPingTime(Product product) override;
  39
  40   bool WriteAccessPointRlz(AccessPoint access_point,
  41                            const char* new_rlz) override;
  42   bool ReadAccessPointRlz(AccessPoint access_point,
  43                           char* rlz,
  44                           size_t rlz_size) override;
  45   bool ClearAccessPointRlz(AccessPoint access_point) override;
  46
  47   bool AddProductEvent(Product product, const char* event_rlz) override;
  48   bool ReadProductEvents(Product product,
  49                          std::vector<std::string>* events) override;
  50   bool ClearProductEvent(Product product, const char* event_rlz) override;
  51   bool ClearAllProductEvents(Product product) override;
  52
  53   bool AddStatefulEvent(Product product, const char* event_rlz) override;
  54   bool IsStatefulEvent(Product product, const char* event_rlz) override;
  55   bool ClearAllStatefulEvents(Product product) override;
  56
  57   void CollectGarbage() override;
  58
  59  private:
  60   // Reads RLZ store from file.
  61   void ReadStore();
  62
  63   // Writes RLZ store back to file.
  64   void WriteStore();
  65
  66   // Adds |value| to list at |list_name| path in JSON store.
  67   bool AddValueToList(const std::string& list_name, base::Value* value);
  68   // Removes |value| from list at |list_name| path in JSON store.
  69   bool RemoveValueFromList(const std::string& list_name,
  70                            const base::Value& value);
  71
  72   // In-memory store with RLZ data.
  73   scoped_ptr<base::DictionaryValue> rlz_store_;
  74
  75   base::FilePath store_path_;
  76
  77   bool read_only_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(RlzValueStoreChromeOS);
  80 };
  81
  82 }  // namespace rlz_lib
  83
  84 #endif  // RLZ_CHROMEOS_LIB_RLZ_VALUE_STORE_CHROMEOS_H_