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   virtual ~RlzValueStoreChromeOS();
  32
  33   // RlzValueStore overrides:
  34   virtual bool HasAccess(AccessType type) OVERRIDE;
  35
  36   virtual bool WritePingTime(Product product, int64 time) OVERRIDE;
  37   virtual bool ReadPingTime(Product product, int64* time) OVERRIDE;
  38   virtual bool ClearPingTime(Product product) OVERRIDE;
  39
  40   virtual bool WriteAccessPointRlz(AccessPoint access_point,
  41                                    const char* new_rlz) OVERRIDE;
  42   virtual bool ReadAccessPointRlz(AccessPoint access_point,
  43                                   char* rlz,
  44                                   size_t rlz_size) OVERRIDE;
  45   virtual bool ClearAccessPointRlz(AccessPoint access_point) OVERRIDE;
  46
  47   virtual bool AddProductEvent(Product product, const char* event_rlz) OVERRIDE;
  48   virtual bool ReadProductEvents(Product product,
  49                                  std::vector<std::string>* events) OVERRIDE;
  50   virtual bool ClearProductEvent(Product product,
  51                                  const char* event_rlz) OVERRIDE;
  52   virtual bool ClearAllProductEvents(Product product) OVERRIDE;
  53
  54   virtual bool AddStatefulEvent(Product product,
  55                                 const char* event_rlz) OVERRIDE;
  56   virtual bool IsStatefulEvent(Product product,
  57                                const char* event_rlz) OVERRIDE;
  58   virtual bool ClearAllStatefulEvents(Product product) OVERRIDE;
  59
  60   virtual void CollectGarbage() OVERRIDE;
  61
  62  private:
  63   // Reads RLZ store from file.
  64   void ReadStore();
  65
  66   // Writes RLZ store back to file.
  67   void WriteStore();
  68
  69   // Adds |value| to list at |list_name| path in JSON store.
  70   bool AddValueToList(std::string list_name, base::Value* value);
  71   // Removes |value| from list at |list_name| path in JSON store.
  72   bool RemoveValueFromList(std::string list_name, const base::Value& value);
  73
  74   // In-memory store with RLZ data.
  75   scoped_ptr<base::DictionaryValue> rlz_store_;
  76
  77   base::FilePath store_path_;
  78
  79   bool read_only_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(RlzValueStoreChromeOS);
  82 };
  83
  84 }  // namespace rlz_lib
  85
  86 #endif  // RLZ_CHROMEOS_LIB_RLZ_VALUE_STORE_CHROMEOS_H_