1 files changed, 58 insertions, 0 deletions
diff --git a/dom/fs/parent/datamodel/FileSystemDatabaseManager.cpp b/dom/fs/parent/datamodel/FileSystemDatabaseManager.cpp
new file mode 100644
index 0000000000..7fc37da8d5
--- /dev/null
+++ b/dom/fs/parent/datamodel/FileSystemDatabaseManager.cpp
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "FileSystemDatabaseManager.h"
+
+#include "FileSystemDatabaseManagerVersion001.h"
+#include "FileSystemFileManager.h"
+#include "ResultConnection.h"
+#include "ResultStatement.h"
+#include "SchemaVersion001.h"
+#include "mozilla/dom/quota/QuotaCommon.h"
+#include "mozilla/dom/quota/ResultExtensions.h"
+#include "nsCOMPtr.h"
+#include "nsIFile.h"
+
+namespace mozilla::dom::fs::data {
+
+/* static */
+Result<quota::UsageInfo, QMResult> FileSystemDatabaseManager::GetUsage(
+    const ResultConnection& aConnection, const Origin& aOrigin) {
+  QM_TRY_INSPECT(const auto& databaseFile, GetDatabaseFile(aOrigin));
+
+  // If database is deleted between connection creation and now, error
+  int64_t dbSize = 0;
+  QM_TRY(QM_TO_RESULT(databaseFile->GetFileSize(&dbSize)));
+
+  quota::UsageInfo result(quota::DatabaseUsageType(Some(dbSize)));
+
+  DatabaseVersion version = 0;
+  QM_TRY(QM_TO_RESULT(aConnection->GetSchemaVersion(&version)));
+
+  switch (version) {
+    case 0: {
+      return result;
+    }
+
+    case 1: {
+      QM_TRY_INSPECT(
+          const Usage& fileUsage,
+          FileSystemDatabaseManagerVersion001::GetFileUsage(aConnection));
+
+      // XXX: DatabaseUsage is currently total usage for most forms of storage
+      result += quota::DatabaseUsageType(Some(fileUsage));
+
+      return result;
+    }
+
+    default:
+      break;
+  }
+
+  return Err(QMResult(NS_ERROR_NOT_IMPLEMENTED));
+}
+
+}  // namespace mozilla::dom::fs::data