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      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_
     87