blob: 788eb4dbed9b885619f76284a47e6553352f99f1 [file] [log] [blame]
// 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 <memory>
#include <string>
#include "base/callback_forward.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "google_apis/drive/drive_api_requests.h"
#include "google_apis/drive/drive_api_url_generator.h"
#include "google_apis/drive/drive_common_callbacks.h"
namespace google_apis {
class RequestSender;
// Runs file list requests (the FileListRequest class) with a backoff retry
// logic in case of the DRIVE_RESPONSE_TOO_LARGE error code.
class FilesListRequestRunner {
RequestSender* request_sender,
const google_apis::DriveApiUrlGenerator& url_generator);
// Creates a FilesListRequest instance and starts the request with a backoff
// retry in case of DRIVE_RESPONSE_TOO_LARGE error code.
CancelCallback CreateAndStartWithSizeBackoff(
int max_results,
const std::string& q,
const std::string& fields,
const FileListCallback& callback);
void SetRequestCompletedCallbackForTesting(const base::Closure& callback);
// Called when the cancelling callback returned by
// CreateAndStartWithSizeBackoff is invoked. Once called cancels the current
// request.
void OnCancel(CancelCallback* cancel_callback);
// Called when a single request is completed with either a success or an
// error. In case of DRIVE_RESPONSE_TOO_LARGE it will retry the request with
// half of the requests.
void OnCompleted(int max_results,
const std::string& q,
const std::string& fields,
const FileListCallback& callback,
CancelCallback* cancel_callback,
DriveApiErrorCode error,
std::unique_ptr<FileList> entry);
RequestSender* request_sender_; // Not owned.
const google_apis::DriveApiUrlGenerator url_generator_; // Not owned.
base::Closure request_completed_callback_for_testing_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<FilesListRequestRunner> weak_ptr_factory_;
} // namespace google_apis