components/invalidation/impl/invalidator_storage.h

   1 // Copyright 2014 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 COMPONENTS_INVALIDATION_IMPL_INVALIDATOR_STORAGE_H_
   6 #define COMPONENTS_INVALIDATION_IMPL_INVALIDATOR_STORAGE_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/macros.h"
  10 #include "base/threading/thread_checker.h"
  11 #include "components/invalidation/impl/invalidation_state_tracker.h"
  12
  13 class PrefRegistrySimple;
  14 class PrefService;
  15
  16 namespace user_prefs {
  17 class PrefRegistrySyncable;
  18 }
  19
  20 namespace invalidation {
  21
  22 // Wraps PrefService in an InvalidationStateTracker to allow SyncNotifiers
  23 // to use PrefService as persistence for invalidation state. It is not thread
  24 // safe, and lives on the UI thread.
  25 class InvalidatorStorage : public syncer::InvalidationStateTracker {
  26  public:
  27   // |pref_service| may not be NULL and must outlive |this|.
  28   explicit InvalidatorStorage(PrefService* pref_service);
  29   ~InvalidatorStorage() override;
  30
  31   // Register prefs to be used by per-Profile instances of this class which
  32   // store invalidation state in Profile prefs.
  33   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  34
  35   // Register prefs to be used by a device-global instance of this class which
  36   // stores invalidation state in local state. This is used on Chrome OS only.
  37   static void RegisterPrefs(PrefRegistrySimple* registry);
  38
  39   // InvalidationStateTracker implementation.
  40   void ClearAndSetNewClientId(const std::string& client_id) override;
  41   std::string GetInvalidatorClientId() const override;
  42   void SetBootstrapData(const std::string& data) override;
  43   std::string GetBootstrapData() const override;
  44   void SetSavedInvalidations(
  45       const syncer::UnackedInvalidationsMap& map) override;
  46   syncer::UnackedInvalidationsMap GetSavedInvalidations() const override;
  47   void Clear() override;
  48
  49  private:
  50   base::ThreadChecker thread_checker_;
  51
  52   PrefService* const pref_service_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(InvalidatorStorage);
  55 };
  56
  57 }  // namespace invalidation
  58
  59 #endif  // COMPONENTS_INVALIDATION_IMPL_INVALIDATOR_STORAGE_H_