blob: 01c89a94f30a0481d707cad1882c6c4bf25a80f3 [file] [log] [blame]
// Copyright (c) 2012 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.
#ifndef STORAGE_BROWSER_FILEAPI_FILE_WRITER_DELEGATE_H_
#define STORAGE_BROWSER_FILEAPI_FILE_WRITER_DELEGATE_H_
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "net/base/file_stream.h"
#include "net/base/io_buffer.h"
#include "net/url_request/url_request.h"
#include "storage/browser/storage_browser_export.h"
namespace storage {
class FileStreamWriter;
enum class FlushPolicy;
class STORAGE_EXPORT_PRIVATE FileWriterDelegate
: public net::URLRequest::Delegate {
public:
enum WriteProgressStatus {
SUCCESS_IO_PENDING,
SUCCESS_COMPLETED,
ERROR_WRITE_STARTED,
ERROR_WRITE_NOT_STARTED,
};
typedef base::Callback<void(base::File::Error result,
int64 bytes,
WriteProgressStatus write_status)>
DelegateWriteCallback;
FileWriterDelegate(scoped_ptr<FileStreamWriter> file_writer,
FlushPolicy flush_policy);
~FileWriterDelegate() override;
void Start(scoped_ptr<net::URLRequest> request,
const DelegateWriteCallback& write_callback);
// Cancels the current write operation. This will synchronously or
// asynchronously call the given write callback (which may result in
// deleting this).
void Cancel();
void OnReceivedRedirect(net::URLRequest* request,
const net::RedirectInfo& redirect_info,
bool* defer_redirect) override;
void OnAuthRequired(net::URLRequest* request,
net::AuthChallengeInfo* auth_info) override;
void OnCertificateRequested(
net::URLRequest* request,
net::SSLCertRequestInfo* cert_request_info) override;
void OnSSLCertificateError(net::URLRequest* request,
const net::SSLInfo& ssl_info,
bool fatal) override;
void OnResponseStarted(net::URLRequest* request) override;
void OnReadCompleted(net::URLRequest* request, int bytes_read) override;
private:
void OnGetFileInfoAndStartRequest(
scoped_ptr<net::URLRequest> request,
base::File::Error error,
const base::File::Info& file_info);
void Read();
void OnDataReceived(int bytes_read);
void Write();
void OnDataWritten(int write_response);
void OnError(base::File::Error error);
void OnProgress(int bytes_read, bool done);
void OnWriteCancelled(int status);
void MaybeFlushForCompletion(base::File::Error error,
int bytes_written,
WriteProgressStatus progress_status);
void OnFlushed(base::File::Error error,
int bytes_written,
WriteProgressStatus progress_status,
int flush_error);
WriteProgressStatus GetCompletionStatusOnError() const;
DelegateWriteCallback write_callback_;
scoped_ptr<FileStreamWriter> file_stream_writer_;
base::Time last_progress_event_time_;
bool writing_started_;
FlushPolicy flush_policy_;
int bytes_written_backlog_;
int bytes_written_;
int bytes_read_;
scoped_refptr<net::IOBufferWithSize> io_buffer_;
scoped_refptr<net::DrainableIOBuffer> cursor_;
scoped_ptr<net::URLRequest> request_;
base::WeakPtrFactory<FileWriterDelegate> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(FileWriterDelegate);
};
} // namespace storage
#endif // STORAGE_BROWSER_FILEAPI_FILE_WRITER_DELEGATE_H_