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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_system/remove_operation.h"
#include "base/sequenced_task_runner.h"
#include "chrome/browser/chromeos/drive/drive.pb.h"
#include "chrome/browser/chromeos/drive/file_cache.h"
#include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
#include "chrome/browser/chromeos/drive/file_system_util.h"
#include "chrome/browser/chromeos/drive/job_scheduler.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace drive {
namespace file_system {
namespace {
// Checks local metadata state before requesting remote delete.
FileError CheckLocalState(internal::ResourceMetadata* metadata,
const base::FilePath& path,
bool is_recursive,
ResourceEntry* entry) {
FileError error = metadata->GetResourceEntryByPath(path, entry);
if (error != FILE_ERROR_OK)
return error;
if (entry->file_info().is_directory() && !is_recursive) {
// Check emptiness of the directory.
ResourceEntryVector entries;
error = metadata->ReadDirectoryByPath(path, &entries);
if (error != FILE_ERROR_OK)
return error;
if (!entries.empty())
return FILE_ERROR_NOT_EMPTY;
}
return FILE_ERROR_OK;
}
// Updates local metadata and cache state after remote delete.
FileError UpdateLocalState(internal::ResourceMetadata* metadata,
internal::FileCache* cache,
const std::string& resource_id,
base::FilePath* changed_directory_path) {
*changed_directory_path = metadata->GetFilePath(resource_id).DirName();
FileError error = metadata->RemoveEntry(resource_id);
if (error != FILE_ERROR_OK)
return error;
error = cache->Remove(resource_id);
DLOG_IF(ERROR, error != FILE_ERROR_OK) << "Failed to remove: " << resource_id;
return FILE_ERROR_OK;
}
} // namespace
RemoveOperation::RemoveOperation(
base::SequencedTaskRunner* blocking_task_runner,
OperationObserver* observer,
JobScheduler* scheduler,
internal::ResourceMetadata* metadata,
internal::FileCache* cache)
: blocking_task_runner_(blocking_task_runner),
observer_(observer),
scheduler_(scheduler),
metadata_(metadata),
cache_(cache),
weak_ptr_factory_(this) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
RemoveOperation::~RemoveOperation() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
void RemoveOperation::Remove(const base::FilePath& path,
bool is_recursive,
const FileOperationCallback& callback) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
ResourceEntry* entry = new ResourceEntry;
base::PostTaskAndReplyWithResult(
blocking_task_runner_,
FROM_HERE,
base::Bind(&CheckLocalState,
metadata_,
path,
is_recursive,
entry),
base::Bind(&RemoveOperation::RemoveAfterCheckLocalState,
weak_ptr_factory_.GetWeakPtr(),
callback,
base::Owned(entry)));
}
void RemoveOperation::RemoveAfterCheckLocalState(
const FileOperationCallback& callback,
const ResourceEntry* entry,
FileError error) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
if (error != FILE_ERROR_OK) {
callback.Run(error);
return;
}
scheduler_->DeleteResource(
entry->resource_id(),
base::Bind(&RemoveOperation::RemoveAfterDeleteResource,
weak_ptr_factory_.GetWeakPtr(),
callback,
entry->resource_id()));
}
void RemoveOperation::RemoveAfterDeleteResource(
const FileOperationCallback& callback,
const std::string& resource_id,
google_apis::GDataErrorCode status) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
FileError error = util::GDataToFileError(status);
if (error != FILE_ERROR_OK) {
callback.Run(error);
return;
}
base::FilePath* changed_directory_path = new base::FilePath;
base::PostTaskAndReplyWithResult(
blocking_task_runner_,
FROM_HERE,
base::Bind(&UpdateLocalState,
metadata_,
cache_,
resource_id,
changed_directory_path),
base::Bind(&RemoveOperation::RemoveAfterUpdateLocalState,
weak_ptr_factory_.GetWeakPtr(),
callback,
base::Owned(changed_directory_path)));
}
void RemoveOperation::RemoveAfterUpdateLocalState(
const FileOperationCallback& callback,
const base::FilePath* changed_directory_path,
FileError error) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(!callback.is_null());
if (error == FILE_ERROR_OK)
observer_->OnDirectoryChangedByOperation(*changed_directory_path);
callback.Run(error);
}
} // namespace file_system
} // namespace drive
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