Index: chrome/browser/extensions/api/storage/local_storage_backend.cc |
diff --git a/chrome/browser/extensions/api/storage/local_storage_backend.cc b/chrome/browser/extensions/api/storage/local_storage_backend.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..c0241de6bdbe5e73e2ed89e27a279e5c91381fd6 |
--- /dev/null |
+++ b/chrome/browser/extensions/api/storage/local_storage_backend.cc |
@@ -0,0 +1,55 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "chrome/browser/extensions/api/storage/local_storage_backend.h" |
+ |
+#include "base/file_util.h" |
+#include "chrome/browser/extensions/api/storage/settings_storage_factory.h" |
+ |
+namespace extensions { |
+ |
+LocalStorageBackend::LocalStorageBackend( |
+ const scoped_refptr<SettingsStorageFactory>& storage_factory, |
+ const base::FilePath& base_path, |
+ const SettingsStorageQuotaEnforcer::Limits& quota) |
+ : SettingsBackend(storage_factory, base_path, quota) {} |
+ |
+LocalStorageBackend::~LocalStorageBackend() {} |
+ |
+ValueStore* LocalStorageBackend::GetStorage(const std::string& extension_id) { |
+ StorageMap::iterator iter = storage_map_.find(extension_id); |
+ if (iter != storage_map_.end()) |
+ return iter->second.get(); |
+ |
+ // Unlike SyncStorageBackend, we don't check for corruption at initialization. |
+ // This is because a) we don't need to, since we'll catch it when we try to |
+ // use it in an API call, and b) because local storage can be much larger |
+ // than sync storage, resulting in a much more significant overhead. |
+ linked_ptr<ValueStore> storage(new SettingsStorageQuotaEnforcer( |
+ quota(), storage_factory()->Create(base_path(), extension_id))); |
+ |
+ storage_map_[extension_id] = storage; |
+ return storage.get(); |
+} |
+ |
+void LocalStorageBackend::DeleteStorage(const std::string& extension_id) { |
+ // Clear settings when the extension is uninstalled. Leveldb implementations |
+ // will also delete the database from disk when the object is destroyed as a |
+ // result of being removed from |storage_map_|. |
+ StorageMap::iterator iter = storage_map_.find(extension_id); |
+ if (iter == storage_map_.end()) { |
+ // If the key isn't in |storage_map_|, it's possible that the extension |
+ // still has storage and that the storage area was just unloaded. Check if |
+ // the path exists, and, if it does, load it in order to delete it. |
+ if (base::PathExists( |
+ storage_factory()->GetDatabasePath(base_path(), extension_id))) { |
+ GetStorage(extension_id); |
not at google - send to devlin
2014/02/14 19:35:56
Creating a storage area here just to delete it str
Devlin
2014/02/18 23:55:22
Initially, I thought there was more cleanup involv
|
+ } else { |
+ return; |
+ } |
+ } |
+ storage_map_.erase(extension_id); |
+} |
+ |
+} // namespace extensions |