extensions/browser/api/storage/local_value_store_cache.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 EXTENSIONS_BROWSER_API_STORAGE_LOCAL_VALUE_STORE_CACHE_H_
   6 #define EXTENSIONS_BROWSER_API_STORAGE_LOCAL_VALUE_STORE_CACHE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/files/file_path.h"
  11 #include "base/memory/linked_ptr.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "extensions/browser/api/storage/settings_storage_quota_enforcer.h"
  15 #include "extensions/browser/api/storage/value_store_cache.h"
  16
  17 namespace extensions {
  18
  19 class SettingsStorageFactory;
  20
  21 // ValueStoreCache for the LOCAL namespace. It owns a backend for apps and
  22 // another for extensions. Each backend takes care of persistence.
  23 class LocalValueStoreCache : public ValueStoreCache {
  24  public:
  25   LocalValueStoreCache(const scoped_refptr<SettingsStorageFactory>& factory,
  26                        const base::FilePath& profile_path);
  27   ~LocalValueStoreCache() override;
  28
  29   // ValueStoreCache implementation:
  30   void RunWithValueStoreForExtension(
  31       const StorageCallback& callback,
  32       scoped_refptr<const Extension> extension) override;
  33   void DeleteStorageSoon(const std::string& extension_id) override;
  34
  35  private:
  36   typedef std::map<std::string, linked_ptr<ValueStore> > StorageMap;
  37
  38   ValueStore* GetStorage(scoped_refptr<const Extension> extension);
  39
  40   // The Factory to use for creating new ValueStores.
  41   const scoped_refptr<SettingsStorageFactory> storage_factory_;
  42
  43   // The base path to use for extensions when creating new ValueStores.
  44   const base::FilePath extension_base_path_;
  45
  46   // The base path to use for apps when creating new ValueStores.
  47   const base::FilePath app_base_path_;
  48
  49   // Quota limits (see SettingsStorageQuotaEnforcer).
  50   const SettingsStorageQuotaEnforcer::Limits quota_;
  51
  52   // The collection of ValueStores for local storage.
  53   StorageMap storage_map_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(LocalValueStoreCache);
  56 };
  57
  58 }  // namespace extensions
  59
  60 #endif  // EXTENSIONS_BROWSER_API_STORAGE_LOCAL_VALUE_STORE_CACHE_H_