blob: b4802e1510ad7d5923b060a50f79debe6605b72a [file] [log] [blame]
// Copyright 2015 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 <stdint.h>
#include <memory>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "net/base/completion_callback.h"
#include "net/base/upload_element_reader.h"
#include "storage/browser/storage_browser_export.h"
namespace base {
class SingleThreadTaskRunner;
namespace net {
class IOBuffer;
namespace storage {
class BlobDataHandle;
class BlobReader;
class FileSystemContext;
// This class is a wrapper around the BlobReader to make it conform
// to the net::UploadElementReader interface, and it also holds around the
// handle to the blob so it stays in memory while we read it.
class STORAGE_EXPORT UploadBlobElementReader
: NON_EXPORTED_BASE(public net::UploadElementReader) {
UploadBlobElementReader(std::unique_ptr<BlobDataHandle> handle,
FileSystemContext* file_system_context,
base::SingleThreadTaskRunner* file_task_runner);
~UploadBlobElementReader() override;
int Init(const net::CompletionCallback& callback) override;
uint64_t GetContentLength() const override;
uint64_t BytesRemaining() const override;
bool IsInMemory() const override;
int Read(net::IOBuffer* buf,
int buf_length,
const net::CompletionCallback& callback) override;
const std::string& uuid() const;
std::unique_ptr<BlobDataHandle> handle_;
scoped_refptr<FileSystemContext> file_system_context_;
scoped_refptr<base::SingleThreadTaskRunner> file_runner_;
std::unique_ptr<BlobReader> reader_;
} // namespace storage