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// 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 "google_apis/drive/files_list_request_runner.h"
#include <utility>
#include "base/bind.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/sparse_histogram.h"
#include "google_apis/drive/drive_api_error_codes.h"
#include "google_apis/drive/drive_api_requests.h"
#include "google_apis/drive/request_sender.h"
namespace google_apis {
FilesListRequestRunner::FilesListRequestRunner(
RequestSender* request_sender,
const google_apis::DriveApiUrlGenerator& url_generator)
: request_sender_(request_sender),
url_generator_(url_generator),
weak_ptr_factory_(this) {
}
FilesListRequestRunner::~FilesListRequestRunner() {
}
CancelCallback FilesListRequestRunner::CreateAndStartWithSizeBackoff(
int max_results,
const std::string& q,
const std::string& fields,
const FileListCallback& callback) {
UMA_HISTOGRAM_COUNTS_1000("Drive.FilesListRequestRunner.MaxResults",
max_results);
base::Closure* const cancel_callback = new base::Closure;
drive::FilesListRequest* const request = new drive::FilesListRequest(
request_sender_, url_generator_,
base::Bind(&FilesListRequestRunner::OnCompleted,
weak_ptr_factory_.GetWeakPtr(), max_results, q, fields,
callback, base::Owned(cancel_callback)));
request->set_max_results(max_results);
request->set_q(q);
request->set_fields(fields);
*cancel_callback = request_sender_->StartRequestWithAuthRetry(request);
// The cancellation callback is owned by the completion callback, so it must
// not be used after |callback| is called.
return base::Bind(&FilesListRequestRunner::OnCancel,
weak_ptr_factory_.GetWeakPtr(),
base::Unretained(cancel_callback));
}
void FilesListRequestRunner::OnCancel(base::Closure* cancel_callback) {
DCHECK(cancel_callback);
DCHECK(!cancel_callback->is_null());
cancel_callback->Run();
}
void FilesListRequestRunner::OnCompleted(int max_results,
const std::string& q,
const std::string& fields,
const FileListCallback& callback,
CancelCallback* cancel_callback,
DriveApiErrorCode error,
scoped_ptr<FileList> entry) {
if (!request_completed_callback_for_testing_.is_null())
request_completed_callback_for_testing_.Run();
UMA_HISTOGRAM_SPARSE_SLOWLY(
"Drive.FilesListRequestRunner.ApiErrorCode", error);
if (error == google_apis::DRIVE_RESPONSE_TOO_LARGE && max_results > 1) {
CreateAndStartWithSizeBackoff(max_results / 2, q, fields, callback);
return;
}
callback.Run(error, std::move(entry));
}
void FilesListRequestRunner::SetRequestCompletedCallbackForTesting(
const base::Closure& callback) {
request_completed_callback_for_testing_ = callback;
}
} // namespace google_apis
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