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// Copyright (c) 2013 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 "components/drive/file_system/create_directory_operation.h"
#include <stddef.h>
#include "components/drive/drive.pb.h"
#include "components/drive/file_change.h"
#include "components/drive/file_system/operation_delegate.h"
#include "components/drive/file_system_core_util.h"
#include "components/drive/job_scheduler.h"
#include "components/drive/resource_metadata.h"
namespace drive {
namespace file_system {
namespace {
FileError CreateDirectoryRecursively(internal::ResourceMetadata* metadata,
const std::string& parent_local_id,
const base::FilePath& relative_file_path,
std::set<std::string>* updated_local_ids,
FileChange* changed_files) {
// Split the first component and remaining ones of |relative_file_path|.
std::vector<base::FilePath::StringType> components;
relative_file_path.GetComponents(&components);
DCHECK(!components.empty());
base::FilePath title(components[0]);
base::FilePath remaining_path;
title.AppendRelativePath(relative_file_path, &remaining_path);
ResourceEntry entry;
const base::Time now = base::Time::Now();
entry.set_title(title.AsUTF8Unsafe());
entry.mutable_file_info()->set_is_directory(true);
entry.mutable_file_info()->set_last_modified(now.ToInternalValue());
entry.mutable_file_info()->set_last_accessed(now.ToInternalValue());
entry.set_parent_local_id(parent_local_id);
entry.set_metadata_edit_state(ResourceEntry::DIRTY);
entry.set_modification_date(base::Time::Now().ToInternalValue());
std::string local_id;
FileError error = metadata->AddEntry(entry, &local_id);
if (error != FILE_ERROR_OK)
return error;
base::FilePath path;
error = metadata->GetFilePath(local_id, &path);
if (error != FILE_ERROR_OK)
return error;
updated_local_ids->insert(local_id);
DCHECK(changed_files);
changed_files->Update(path, FileChange::FILE_TYPE_DIRECTORY,
FileChange::CHANGE_TYPE_ADD_OR_UPDATE);
if (remaining_path.empty()) // All directories are created successfully.
return FILE_ERROR_OK;
// Create descendant directories.
return CreateDirectoryRecursively(
metadata, local_id, remaining_path, updated_local_ids, changed_files);
}
FileError UpdateLocalState(internal::ResourceMetadata* metadata,
const base::FilePath& directory_path,
bool is_exclusive,
bool is_recursive,
std::set<std::string>* updated_local_ids,
FileChange* changed_files) {
// Get the existing deepest entry.
std::vector<base::FilePath::StringType> components;
directory_path.GetComponents(&components);
if (components.empty() ||
components[0] != util::GetDriveGrandRootPath().value())
return FILE_ERROR_NOT_FOUND;
base::FilePath existing_deepest_path(components[0]);
std::string local_id = util::kDriveGrandRootLocalId;
for (size_t i = 1; i < components.size(); ++i) {
const std::string component = base::FilePath(components[i]).AsUTF8Unsafe();
std::string child_local_id;
FileError error =
metadata->GetChildId(local_id, component, &child_local_id);
if (error == FILE_ERROR_NOT_FOUND)
break;
if (error != FILE_ERROR_OK)
return error;
existing_deepest_path = existing_deepest_path.Append(components[i]);
local_id = child_local_id;
}
ResourceEntry entry;
FileError error = metadata->GetResourceEntryById(local_id, &entry);
if (error != FILE_ERROR_OK)
return error;
if (!entry.file_info().is_directory())
return FILE_ERROR_NOT_A_DIRECTORY;
if (directory_path == existing_deepest_path)
return is_exclusive ? FILE_ERROR_EXISTS : FILE_ERROR_OK;
// If it is not recursive creation, the found directory must be the direct
// parent of |directory_path| to ensure creating exact one directory.
if (!is_recursive && existing_deepest_path != directory_path.DirName())
return FILE_ERROR_NOT_FOUND;
// Create directories under the found directory.
base::FilePath remaining_path;
existing_deepest_path.AppendRelativePath(directory_path, &remaining_path);
return CreateDirectoryRecursively(metadata,
entry.local_id(),
remaining_path,
updated_local_ids,
changed_files);
}
} // namespace
CreateDirectoryOperation::CreateDirectoryOperation(
base::SequencedTaskRunner* blocking_task_runner,
OperationDelegate* delegate,
internal::ResourceMetadata* metadata)
: blocking_task_runner_(blocking_task_runner),
delegate_(delegate),
metadata_(metadata),
weak_ptr_factory_(this) {
}
CreateDirectoryOperation::~CreateDirectoryOperation() {
DCHECK(thread_checker_.CalledOnValidThread());
}
void CreateDirectoryOperation::CreateDirectory(
const base::FilePath& directory_path,
bool is_exclusive,
bool is_recursive,
const FileOperationCallback& callback) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(!callback.is_null());
std::set<std::string>* updated_local_ids = new std::set<std::string>;
FileChange* changed_files(new FileChange);
base::PostTaskAndReplyWithResult(
blocking_task_runner_.get(),
FROM_HERE,
base::Bind(&UpdateLocalState,
metadata_,
directory_path,
is_exclusive,
is_recursive,
updated_local_ids,
changed_files),
base::Bind(
&CreateDirectoryOperation::CreateDirectoryAfterUpdateLocalState,
weak_ptr_factory_.GetWeakPtr(),
callback,
base::Owned(updated_local_ids),
base::Owned(changed_files)));
}
void CreateDirectoryOperation::CreateDirectoryAfterUpdateLocalState(
const FileOperationCallback& callback,
const std::set<std::string>* updated_local_ids,
const FileChange* changed_files,
FileError error) {
DCHECK(thread_checker_.CalledOnValidThread());
DCHECK(!callback.is_null());
for (const auto& id : *updated_local_ids) {
delegate_->OnEntryUpdatedByOperation(ClientContext(USER_INITIATED), id);
}
delegate_->OnFileChangedByOperation(*changed_files);
callback.Run(error);
}
} // namespace file_system
} // namespace drive
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