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// 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.
#include "chrome/browser/chromeos/drive/file_write_helper.h"
#include "base/threading/sequenced_worker_pool.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace drive {
namespace {
// Emits debug log when DriveFileSystem::CloseFile() is complete.
void EmitDebugLogForCloseFile(const FilePath& file_path,
DriveFileError file_error) {
if (file_error != DRIVE_FILE_OK) {
LOG(WARNING) << "CloseFile failed: " << file_path.AsUTF8Unsafe() << ": "
<< file_error;
}
}
} // namespace
FileWriteHelper::FileWriteHelper(DriveFileSystemInterface* file_system)
: file_system_(file_system),
ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
// Must be created in DriveSystemService.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
FileWriteHelper::~FileWriteHelper() {
// Must be destroyed in DriveSystemService.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
void FileWriteHelper::PrepareWritableFileAndRun(
const FilePath& file_path,
const OpenFileCallback& callback) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
file_system_->CreateFile(
file_path,
false, // it is not an error, even if the path already exists.
base::Bind(&FileWriteHelper::PrepareWritableFileAndRunAfterCreateFile,
weak_ptr_factory_.GetWeakPtr(),
file_path,
callback));
}
void FileWriteHelper::PrepareWritableFileAndRunAfterCreateFile(
const FilePath& file_path,
const OpenFileCallback& callback,
DriveFileError error) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
if (error != DRIVE_FILE_OK) {
content::BrowserThread::GetBlockingPool()->PostTask(
FROM_HERE,
base::Bind(callback, error, FilePath()));
return;
}
file_system_->OpenFile(
file_path,
base::Bind(&FileWriteHelper::PrepareWritableFileAndRunAfterOpenFile,
weak_ptr_factory_.GetWeakPtr(),
file_path,
callback));
}
void FileWriteHelper::PrepareWritableFileAndRunAfterOpenFile(
const FilePath& file_path,
const OpenFileCallback& callback,
DriveFileError error,
const FilePath& local_cache_path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
if (error != DRIVE_FILE_OK) {
content::BrowserThread::GetBlockingPool()->PostTask(
FROM_HERE,
base::Bind(callback, error, FilePath()));
return;
}
content::BrowserThread::GetBlockingPool()->PostTaskAndReply(
FROM_HERE,
base::Bind(callback, DRIVE_FILE_OK, local_cache_path),
base::Bind(&FileWriteHelper::PrepareWritableFileAndRunAfterCallback,
weak_ptr_factory_.GetWeakPtr(),
file_path));
}
void FileWriteHelper::PrepareWritableFileAndRunAfterCallback(
const FilePath& file_path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
file_system_->CloseFile(file_path,
base::Bind(&EmitDebugLogForCloseFile, file_path));
}
} // namespace drive
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