indexed_db_external_object_storage.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_EXTERNAL_OBJECT_STORAGE_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_EXTERNAL_OBJECT_STORAGE_H_

#include <stdint.h>
#include <map>
#include <string>
#include <vector>

#include "base/functional/callback_forward.h"
#include "components/services/storage/public/mojom/blob_storage_context.mojom.h"
#include "content/browser/indexed_db/indexed_db_external_object.h"
#include "content/browser/indexed_db/indexed_db_leveldb_coding.h"
#include "storage/common/file_system/file_system_mount_option.h"
#include "third_party/leveldatabase/src/include/leveldb/status.h"

namespace content {

// This file contains all of the classes & types used to store external objects
// (such as blobs) in IndexedDB. Currently it is messy because this is
// mid-refactor, but it will be cleaned up over time.

enum class BlobWriteResult { … };

// This callback is used to signify that writing blobs is complete. The
// BlobWriteResult signifies if the operation succeeded or not, and the returned
// status is used to handle errors in the next part of the transcation commit
// lifecycle. Note: The returned status can only be used when the result is
// |kRunPhaseTwoAndReturnResult|.  The WriteBlobToFileResult is a more granular
// error in the case something goes wrong.
BlobWriteCallback;

// This object represents a change in the database involving adding or removing
// external objects. if external_objects() is empty, then objects are to be
// deleted, and if external_objects() is populated, then objects are two be
// written (and also possibly deleted if there were already objects).
class IndexedDBExternalObjectChangeRecord { … };

// Reports that the recovery and/or active journals have been processed, and
// blob files have been deleted.
BlobFilesCleanedCallback;

// Reports that there are (or are not) active blobs.
ReportOutstandingBlobsCallback;

}  // namespace content

#endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_EXTERNAL_OBJECT_STORAGE_H_
chromium/content/browser/indexed_db/indexed_db_external_object_storage.h
