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      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   virtual ~LocalValueStoreCache();
     28 
     29   // ValueStoreCache implementation:
     30   virtual void RunWithValueStoreForExtension(
     31       const StorageCallback& callback,
     32       scoped_refptr<const Extension> extension) OVERRIDE;
     33   virtual 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_
     61