| // 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 "components/drive/job_scheduler.h" |
| |
| #include <stddef.h> |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/files/file_util.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/rand_util.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "components/drive/drive_pref_names.h" |
| #include "components/drive/event_logger.h" |
| #include "components/prefs/pref_service.h" |
| #include "google_apis/drive/drive_api_parser.h" |
| |
| namespace drive { |
| |
| namespace { |
| |
| // All jobs are retried at maximum of kMaxRetryCount when they fail due to |
| // throttling or server error. The delay before retrying a job is shared among |
| // jobs. It doubles in length on each failure, upto 2^kMaxThrottleCount seconds. |
| // |
| // According to the API documentation, kMaxRetryCount should be the same as |
| // kMaxThrottleCount (https://developers.google.com/drive/handle-errors). |
| // But currently multiplied by 2 to ensure upload related jobs retried for a |
| // sufficient number of times. crbug.com/269918 |
| const int kMaxThrottleCount = 4; |
| const int kMaxRetryCount = 2 * kMaxThrottleCount; |
| const size_t kMaxBatchCount = 20; |
| const size_t kMaxBatchSize = 1024 * 1024 * 10; |
| |
| // GetDefaultValue returns a value constructed by the default constructor. |
| template<typename T> struct DefaultValueCreator { |
| static T GetDefaultValue() { return T(); } |
| }; |
| template<typename T> struct DefaultValueCreator<const T&> { |
| static T GetDefaultValue() { return T(); } |
| }; |
| |
| // Helper of CreateErrorRunCallback implementation. |
| // Provides: |
| // - ResultType; the type of the Callback which should be returned by |
| // CreateErrorRunCallback. |
| // - Run(): a static function which takes the original |callback| and |error|, |
| // and runs the |callback|.Run() with the error code and default values |
| // for remaining arguments. |
| template<typename CallbackType> struct CreateErrorRunCallbackHelper; |
| |
| // CreateErrorRunCallback with two arguments. |
| template<typename P1> |
| struct CreateErrorRunCallbackHelper<void(google_apis::DriveApiErrorCode, P1)> { |
| static void Run( |
| const base::Callback<void(google_apis::DriveApiErrorCode, P1)>& callback, |
| google_apis::DriveApiErrorCode error) { |
| callback.Run(error, DefaultValueCreator<P1>::GetDefaultValue()); |
| } |
| }; |
| |
| // Returns a callback with the tail parameter bound to its default value. |
| // In other words, returned_callback.Run(error) runs callback.Run(error, T()). |
| template<typename CallbackType> |
| base::Callback<void(google_apis::DriveApiErrorCode)> |
| CreateErrorRunCallback(const base::Callback<CallbackType>& callback) { |
| return base::Bind(&CreateErrorRunCallbackHelper<CallbackType>::Run, callback); |
| } |
| |
| // Parameter struct for RunUploadNewFile. |
| struct UploadNewFileParams { |
| std::string parent_resource_id; |
| base::FilePath local_file_path; |
| std::string title; |
| std::string content_type; |
| UploadNewFileOptions options; |
| UploadCompletionCallback callback; |
| google_apis::ProgressCallback progress_callback; |
| }; |
| |
| // Helper function to work around the arity limitation of base::Bind. |
| google_apis::CancelCallback RunUploadNewFile( |
| DriveUploaderInterface* uploader, |
| const UploadNewFileParams& params) { |
| return uploader->UploadNewFile(params.parent_resource_id, |
| params.local_file_path, |
| params.title, |
| params.content_type, |
| params.options, |
| params.callback, |
| params.progress_callback); |
| } |
| |
| // Parameter struct for RunUploadExistingFile. |
| struct UploadExistingFileParams { |
| std::string resource_id; |
| base::FilePath local_file_path; |
| std::string content_type; |
| UploadExistingFileOptions options; |
| std::string etag; |
| UploadCompletionCallback callback; |
| google_apis::ProgressCallback progress_callback; |
| }; |
| |
| // Helper function to work around the arity limitation of base::Bind. |
| google_apis::CancelCallback RunUploadExistingFile( |
| DriveUploaderInterface* uploader, |
| const UploadExistingFileParams& params) { |
| return uploader->UploadExistingFile(params.resource_id, |
| params.local_file_path, |
| params.content_type, |
| params.options, |
| params.callback, |
| params.progress_callback); |
| } |
| |
| // Parameter struct for RunResumeUploadFile. |
| struct ResumeUploadFileParams { |
| GURL upload_location; |
| base::FilePath local_file_path; |
| std::string content_type; |
| UploadCompletionCallback callback; |
| google_apis::ProgressCallback progress_callback; |
| }; |
| |
| // Helper function to adjust the return type. |
| google_apis::CancelCallback RunResumeUploadFile( |
| DriveUploaderInterface* uploader, |
| const ResumeUploadFileParams& params) { |
| return uploader->ResumeUploadFile(params.upload_location, |
| params.local_file_path, |
| params.content_type, |
| params.callback, |
| params.progress_callback); |
| } |
| |
| } // namespace |
| |
| // Metadata jobs are cheap, so we run them concurrently. File jobs run serially. |
| const int JobScheduler::kMaxJobCount[] = { |
| 20, // METADATA_QUEUE |
| 1, // FILE_QUEUE |
| }; |
| |
| JobScheduler::JobEntry::JobEntry(JobType type) |
| : job_info(type), |
| context(ClientContext(USER_INITIATED)), |
| retry_count(0) { |
| } |
| |
| JobScheduler::JobEntry::~JobEntry() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| } |
| |
| struct JobScheduler::ResumeUploadParams { |
| base::FilePath drive_file_path; |
| base::FilePath local_file_path; |
| std::string content_type; |
| }; |
| |
| JobScheduler::JobScheduler( |
| PrefService* pref_service, |
| EventLogger* logger, |
| DriveServiceInterface* drive_service, |
| network::NetworkConnectionTracker* network_connection_tracker, |
| base::SequencedTaskRunner* blocking_task_runner, |
| device::mojom::WakeLockProviderPtr wake_lock_provider) |
| : throttle_count_(0), |
| wait_until_(base::Time::Now()), |
| disable_throttling_(false), |
| logger_(logger), |
| drive_service_(drive_service), |
| network_connection_tracker_(network_connection_tracker), |
| blocking_task_runner_(blocking_task_runner), |
| uploader_(new DriveUploader(drive_service, |
| blocking_task_runner, |
| std::move(wake_lock_provider))), |
| pref_service_(pref_service), |
| weak_ptr_factory_(this) { |
| for (int i = 0; i < NUM_QUEUES; ++i) |
| queue_[i] = std::make_unique<JobQueue>(kMaxJobCount[i], NUM_CONTEXT_TYPES, |
| kMaxBatchCount, kMaxBatchSize); |
| |
| network_connection_tracker_->AddNetworkConnectionObserver(this); |
| } |
| |
| JobScheduler::~JobScheduler() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| size_t num_queued_jobs = 0; |
| for (int i = 0; i < NUM_QUEUES; ++i) |
| num_queued_jobs += queue_[i]->GetNumberOfJobs(); |
| DCHECK_EQ(num_queued_jobs, job_map_.size()); |
| |
| network_connection_tracker_->RemoveNetworkConnectionObserver(this); |
| } |
| |
| std::vector<JobInfo> JobScheduler::GetJobInfoList() { |
| std::vector<JobInfo> job_info_list; |
| for (JobIDMap::iterator iter(&job_map_); !iter.IsAtEnd(); iter.Advance()) |
| job_info_list.push_back(iter.GetCurrentValue()->job_info); |
| return job_info_list; |
| } |
| |
| void JobScheduler::AddObserver(JobListObserver* observer) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| observer_list_.AddObserver(observer); |
| } |
| |
| void JobScheduler::RemoveObserver(JobListObserver* observer) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| observer_list_.RemoveObserver(observer); |
| } |
| |
| void JobScheduler::CancelJob(JobID job_id) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* job = job_map_.Lookup(job_id); |
| if (job) { |
| if (job->job_info.state == STATE_RUNNING) { |
| // If the job is running an HTTP request, cancel it via |cancel_callback| |
| // returned from the request, and wait for termination in the normal |
| // callback handler, OnJobDone. |
| if (!job->cancel_callback.is_null()) |
| job->cancel_callback.Run(); |
| } else { |
| AbortNotRunningJob(job, google_apis::DRIVE_CANCELLED); |
| } |
| } |
| } |
| |
| void JobScheduler::CancelAllJobs() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| // CancelJob may remove the entry from |job_map_|. That's OK. IDMap supports |
| // removable during iteration. |
| for (JobIDMap::iterator iter(&job_map_); !iter.IsAtEnd(); iter.Advance()) |
| CancelJob(iter.GetCurrentKey()); |
| } |
| |
| void JobScheduler::GetAboutResource( |
| const google_apis::AboutResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_ABOUT_RESOURCE); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::GetAboutResource, |
| base::Unretained(drive_service_), |
| base::Bind(&JobScheduler::OnGetAboutResourceJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetStartPageToken( |
| const std::string& team_drive_id, |
| const google_apis::StartPageTokenCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_START_PAGE_TOKEN); |
| new_job->task = base::BindRepeating( |
| &DriveServiceInterface::GetStartPageToken, |
| base::Unretained(drive_service_), team_drive_id, |
| base::BindRepeating(&JobScheduler::OnGetStartPageTokenDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetAllTeamDriveList( |
| const google_apis::TeamDriveListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| JobEntry* new_job = CreateNewJob(TYPE_GET_ALL_TEAM_DRIVE_LIST); |
| new_job->task = |
| base::Bind(&DriveServiceInterface::GetAllTeamDriveList, |
| base::Unretained(drive_service_), |
| base::Bind(&JobScheduler::OnGetTeamDriveListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetAllFileList( |
| const std::string& team_drive_id, |
| const google_apis::FileListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_ALL_RESOURCE_LIST); |
| new_job->task = base::Bind(&DriveServiceInterface::GetAllFileList, |
| base::Unretained(drive_service_), team_drive_id, |
| base::Bind(&JobScheduler::OnGetFileListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetFileListInDirectory( |
| const std::string& directory_resource_id, |
| const google_apis::FileListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob( |
| TYPE_GET_RESOURCE_LIST_IN_DIRECTORY); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::GetFileListInDirectory, |
| base::Unretained(drive_service_), |
| directory_resource_id, |
| base::Bind(&JobScheduler::OnGetFileListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::Search(const std::string& search_query, |
| const google_apis::FileListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_SEARCH); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::Search, |
| base::Unretained(drive_service_), |
| search_query, |
| base::Bind(&JobScheduler::OnGetFileListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetChangeList( |
| int64_t start_changestamp, |
| const google_apis::ChangeListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_CHANGE_LIST); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::GetChangeList, |
| base::Unretained(drive_service_), |
| start_changestamp, |
| base::Bind(&JobScheduler::OnGetChangeListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetChangeList( |
| const std::string& team_drive_id, |
| const std::string& start_page_token, |
| const google_apis::ChangeListCallback& callback) { |
| JobEntry* new_job = CreateNewJob(TYPE_GET_CHANGE_LIST); |
| new_job->task = base::BindRepeating( |
| &DriveServiceInterface::GetChangeListByToken, |
| base::Unretained(drive_service_), team_drive_id, start_page_token, |
| base::BindRepeating(&JobScheduler::OnGetChangeListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetRemainingChangeList( |
| const GURL& next_link, |
| const google_apis::ChangeListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_REMAINING_CHANGE_LIST); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::GetRemainingChangeList, |
| base::Unretained(drive_service_), |
| next_link, |
| base::Bind(&JobScheduler::OnGetChangeListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetRemainingTeamDriveList( |
| const std::string& page_token, |
| const google_apis::TeamDriveListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| JobEntry* new_job = CreateNewJob(TYPE_GET_REMAINING_TEAM_DRIVE_LIST); |
| new_job->task = |
| base::Bind(&DriveServiceInterface::GetRemainingTeamDriveList, |
| base::Unretained(drive_service_), page_token, |
| base::Bind(&JobScheduler::OnGetTeamDriveListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetRemainingFileList( |
| const GURL& next_link, |
| const google_apis::FileListCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_REMAINING_FILE_LIST); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::GetRemainingFileList, |
| base::Unretained(drive_service_), |
| next_link, |
| base::Bind(&JobScheduler::OnGetFileListJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::GetFileResource( |
| const std::string& resource_id, |
| const ClientContext& context, |
| const google_apis::FileResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_GET_RESOURCE_ENTRY); |
| new_job->context = context; |
| new_job->task = base::Bind( |
| &DriveServiceInterface::GetFileResource, |
| base::Unretained(drive_service_), |
| resource_id, |
| base::Bind(&JobScheduler::OnGetFileResourceJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::TrashResource( |
| const std::string& resource_id, |
| const ClientContext& context, |
| const google_apis::EntryActionCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_TRASH_RESOURCE); |
| new_job->context = context; |
| new_job->task = base::Bind( |
| &DriveServiceInterface::TrashResource, |
| base::Unretained(drive_service_), |
| resource_id, |
| base::Bind(&JobScheduler::OnEntryActionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = callback; |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::CopyResource( |
| const std::string& resource_id, |
| const std::string& parent_resource_id, |
| const std::string& new_title, |
| const base::Time& last_modified, |
| const google_apis::FileResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_COPY_RESOURCE); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::CopyResource, |
| base::Unretained(drive_service_), |
| resource_id, |
| parent_resource_id, |
| new_title, |
| last_modified, |
| base::Bind(&JobScheduler::OnGetFileResourceJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::UpdateResource( |
| const std::string& resource_id, |
| const std::string& parent_resource_id, |
| const std::string& new_title, |
| const base::Time& last_modified, |
| const base::Time& last_viewed_by_me, |
| const google_apis::drive::Properties& properties, |
| const ClientContext& context, |
| const google_apis::FileResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_UPDATE_RESOURCE); |
| new_job->context = context; |
| new_job->task = base::Bind(&DriveServiceInterface::UpdateResource, |
| base::Unretained(drive_service_), resource_id, |
| parent_resource_id, new_title, last_modified, |
| last_viewed_by_me, properties, |
| base::Bind(&JobScheduler::OnGetFileResourceJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::AddResourceToDirectory( |
| const std::string& parent_resource_id, |
| const std::string& resource_id, |
| const google_apis::EntryActionCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_ADD_RESOURCE_TO_DIRECTORY); |
| new_job->task = base::Bind( |
| &DriveServiceInterface::AddResourceToDirectory, |
| base::Unretained(drive_service_), |
| parent_resource_id, |
| resource_id, |
| base::Bind(&JobScheduler::OnEntryActionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = callback; |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::RemoveResourceFromDirectory( |
| const std::string& parent_resource_id, |
| const std::string& resource_id, |
| const ClientContext& context, |
| const google_apis::EntryActionCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_REMOVE_RESOURCE_FROM_DIRECTORY); |
| new_job->context = context; |
| new_job->task = base::Bind( |
| &DriveServiceInterface::RemoveResourceFromDirectory, |
| base::Unretained(drive_service_), |
| parent_resource_id, |
| resource_id, |
| base::Bind(&JobScheduler::OnEntryActionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = callback; |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::AddNewDirectory( |
| const std::string& parent_resource_id, |
| const std::string& directory_title, |
| const AddNewDirectoryOptions& options, |
| const ClientContext& context, |
| const google_apis::FileResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_ADD_NEW_DIRECTORY); |
| new_job->context = context; |
| new_job->task = base::Bind( |
| &DriveServiceInterface::AddNewDirectory, |
| base::Unretained(drive_service_), |
| parent_resource_id, |
| directory_title, |
| options, |
| base::Bind(&JobScheduler::OnGetFileResourceJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| JobID JobScheduler::DownloadFile( |
| const base::FilePath& virtual_path, |
| int64_t expected_file_size, |
| const base::FilePath& local_cache_path, |
| const std::string& resource_id, |
| const ClientContext& context, |
| const google_apis::DownloadActionCallback& download_action_callback, |
| const google_apis::GetContentCallback& get_content_callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_DOWNLOAD_FILE); |
| new_job->job_info.file_path = virtual_path; |
| new_job->job_info.num_total_bytes = expected_file_size; |
| new_job->context = context; |
| new_job->task = base::Bind( |
| &DriveServiceInterface::DownloadFile, |
| base::Unretained(drive_service_), |
| local_cache_path, |
| resource_id, |
| base::Bind(&JobScheduler::OnDownloadActionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| download_action_callback), |
| get_content_callback, |
| base::Bind(&JobScheduler::UpdateProgress, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id)); |
| new_job->abort_callback = CreateErrorRunCallback(download_action_callback); |
| StartJob(new_job); |
| return new_job->job_info.job_id; |
| } |
| |
| void JobScheduler::UploadNewFile( |
| const std::string& parent_resource_id, |
| int64_t expected_file_size, |
| const base::FilePath& drive_file_path, |
| const base::FilePath& local_file_path, |
| const std::string& title, |
| const std::string& content_type, |
| const UploadNewFileOptions& options, |
| const ClientContext& context, |
| const google_apis::FileResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_UPLOAD_NEW_FILE); |
| new_job->job_info.file_path = drive_file_path; |
| new_job->job_info.num_total_bytes = expected_file_size; |
| new_job->context = context; |
| |
| UploadNewFileParams params; |
| params.parent_resource_id = parent_resource_id; |
| params.local_file_path = local_file_path; |
| params.title = title; |
| params.content_type = content_type; |
| params.options = options; |
| |
| ResumeUploadParams resume_params; |
| resume_params.local_file_path = params.local_file_path; |
| resume_params.content_type = params.content_type; |
| |
| params.callback = base::Bind(&JobScheduler::OnUploadCompletionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| resume_params, |
| callback); |
| params.progress_callback = base::Bind(&JobScheduler::UpdateProgress, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id); |
| new_job->task = base::Bind(&RunUploadNewFile, uploader_.get(), params); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::UploadExistingFile( |
| const std::string& resource_id, |
| int64_t expected_file_size, |
| const base::FilePath& drive_file_path, |
| const base::FilePath& local_file_path, |
| const std::string& content_type, |
| const UploadExistingFileOptions& options, |
| const ClientContext& context, |
| const google_apis::FileResourceCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_UPLOAD_EXISTING_FILE); |
| new_job->job_info.file_path = drive_file_path; |
| new_job->job_info.num_total_bytes = expected_file_size; |
| new_job->context = context; |
| |
| UploadExistingFileParams params; |
| params.resource_id = resource_id; |
| params.local_file_path = local_file_path; |
| params.content_type = content_type; |
| params.options = options; |
| |
| ResumeUploadParams resume_params; |
| resume_params.local_file_path = params.local_file_path; |
| resume_params.content_type = params.content_type; |
| |
| params.callback = base::Bind(&JobScheduler::OnUploadCompletionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| resume_params, |
| callback); |
| params.progress_callback = base::Bind(&JobScheduler::UpdateProgress, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id); |
| new_job->task = base::Bind(&RunUploadExistingFile, uploader_.get(), params); |
| new_job->abort_callback = CreateErrorRunCallback(callback); |
| StartJob(new_job); |
| } |
| |
| void JobScheduler::AddPermission( |
| const std::string& resource_id, |
| const std::string& email, |
| google_apis::drive::PermissionRole role, |
| const google_apis::EntryActionCallback& callback) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| JobEntry* new_job = CreateNewJob(TYPE_ADD_PERMISSION); |
| new_job->task = base::Bind(&DriveServiceInterface::AddPermission, |
| base::Unretained(drive_service_), |
| resource_id, |
| email, |
| role, |
| base::Bind(&JobScheduler::OnEntryActionJobDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| new_job->job_info.job_id, |
| callback)); |
| new_job->abort_callback = callback; |
| StartJob(new_job); |
| } |
| |
| JobScheduler::JobEntry* JobScheduler::CreateNewJob(JobType type) { |
| auto job = std::make_unique<JobEntry>(type); |
| JobEntry* job_raw = job.get(); |
| int32_t job_key = job_map_.Add(std::move(job)); |
| job_raw->job_info.job_id = job_key; |
| return job_raw; |
| } |
| |
| void JobScheduler::StartJob(JobEntry* job) { |
| DCHECK(!job->task.is_null()); |
| |
| QueueJob(job->job_info.job_id); |
| NotifyJobAdded(job->job_info); |
| DoJobLoop(GetJobQueueType(job->job_info.job_type)); |
| } |
| |
| void JobScheduler::QueueJob(JobID job_id) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* job_entry = job_map_.Lookup(job_id); |
| DCHECK(job_entry); |
| const JobInfo& job_info = job_entry->job_info; |
| |
| const QueueType queue_type = GetJobQueueType(job_info.job_type); |
| const bool batchable = job_info.job_type == TYPE_UPLOAD_EXISTING_FILE || |
| job_info.job_type == TYPE_UPLOAD_NEW_FILE; |
| queue_[queue_type]->Push(job_id, job_entry->context.type, batchable, |
| job_info.num_total_bytes); |
| |
| const std::string retry_prefix = job_entry->retry_count > 0 ? |
| base::StringPrintf(" (retry %d)", job_entry->retry_count) : ""; |
| logger_->Log(logging::LOG_INFO, |
| "Job queued%s: %s - %s", |
| retry_prefix.c_str(), |
| job_info.ToString().c_str(), |
| GetQueueInfo(queue_type).c_str()); |
| } |
| |
| void JobScheduler::DoJobLoop(QueueType queue_type) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| const int accepted_priority = GetCurrentAcceptedPriority(queue_type); |
| |
| // Abort all USER_INITAITED jobs when not accepted. |
| if (accepted_priority < USER_INITIATED) { |
| std::vector<JobID> jobs; |
| queue_[queue_type]->GetQueuedJobs(USER_INITIATED, &jobs); |
| for (size_t i = 0; i < jobs.size(); ++i) { |
| JobEntry* job = job_map_.Lookup(jobs[i]); |
| DCHECK(job); |
| AbortNotRunningJob(job, google_apis::DRIVE_NO_CONNECTION); |
| } |
| } |
| |
| // Wait when throttled. |
| const base::Time now = base::Time::Now(); |
| if (now < wait_until_) { |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, |
| base::BindOnce(&JobScheduler::DoJobLoop, weak_ptr_factory_.GetWeakPtr(), |
| queue_type), |
| wait_until_ - now); |
| return; |
| } |
| |
| // Run the job with the highest priority in the queue. |
| std::vector<JobID> job_ids; |
| queue_[queue_type]->PopForRun(accepted_priority, &job_ids); |
| if (job_ids.empty()) |
| return; |
| |
| if (job_ids.size() > 1) |
| uploader_->StartBatchProcessing(); |
| |
| for (JobID job_id : job_ids) { |
| JobEntry* entry = job_map_.Lookup(job_id); |
| DCHECK(entry); |
| |
| JobInfo* job_info = &entry->job_info; |
| job_info->state = STATE_RUNNING; |
| job_info->start_time = now; |
| NotifyJobUpdated(*job_info); |
| |
| entry->cancel_callback = entry->task.Run(); |
| logger_->Log(logging::LOG_INFO, "Job started: %s - %s", |
| job_info->ToString().c_str(), |
| GetQueueInfo(queue_type).c_str()); |
| } |
| |
| if (job_ids.size() > 1) |
| uploader_->StopBatchProcessing(); |
| |
| UpdateWait(); |
| } |
| |
| int JobScheduler::GetCurrentAcceptedPriority(QueueType queue_type) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| const int kNoJobShouldRun = -1; |
| |
| // Should stop if Drive was disabled while running the fetch loop. |
| if (pref_service_->GetBoolean(prefs::kDisableDrive)) |
| return kNoJobShouldRun; |
| |
| // Should stop if the network is not online. |
| auto connection_type = network::mojom::ConnectionType::CONNECTION_UNKNOWN; |
| network_connection_tracker_->GetConnectionType( |
| &connection_type, base::BindOnce(&JobScheduler::OnConnectionChanged, |
| weak_ptr_factory_.GetWeakPtr())); |
| if (connection_type == network::mojom::ConnectionType::CONNECTION_NONE) |
| return kNoJobShouldRun; |
| |
| // For the file queue, if it is on cellular network, only user initiated |
| // operations are allowed to start. |
| if (queue_type == FILE_QUEUE && |
| pref_service_->GetBoolean(prefs::kDisableDriveOverCellular) && |
| network::NetworkConnectionTracker::IsConnectionCellular(connection_type)) |
| return USER_INITIATED; |
| |
| // Otherwise, every operations including background tasks are allowed. |
| return BACKGROUND; |
| } |
| |
| void JobScheduler::UpdateWait() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| if (disable_throttling_ || throttle_count_ == 0) |
| return; |
| |
| // Exponential backoff: https://developers.google.com/drive/handle-errors. |
| base::TimeDelta delay = |
| base::TimeDelta::FromSeconds(static_cast<int64_t>(1) |
| << (throttle_count_ - 1)) + |
| base::TimeDelta::FromMilliseconds(base::RandInt(0, 1000)); |
| VLOG(1) << "Throttling for " << delay.InMillisecondsF(); |
| |
| wait_until_ = std::max(wait_until_, base::Time::Now() + delay); |
| } |
| |
| bool JobScheduler::OnJobDone(JobID job_id, |
| google_apis::DriveApiErrorCode error) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| JobEntry* job_entry = job_map_.Lookup(job_id); |
| DCHECK(job_entry); |
| JobInfo* job_info = &job_entry->job_info; |
| QueueType queue_type = GetJobQueueType(job_info->job_type); |
| queue_[queue_type]->MarkFinished(job_id); |
| |
| const base::TimeDelta elapsed = base::Time::Now() - job_info->start_time; |
| bool success = (GDataToFileError(error) == FILE_ERROR_OK); |
| logger_->Log(success ? logging::LOG_INFO : logging::LOG_WARNING, |
| "Job done: %s => %s (elapsed time: %sms) - %s", |
| job_info->ToString().c_str(), |
| DriveApiErrorCodeToString(error).c_str(), |
| base::NumberToString(elapsed.InMilliseconds()).c_str(), |
| GetQueueInfo(queue_type).c_str()); |
| |
| // Retry, depending on the error. |
| const bool is_server_error = |
| error == google_apis::HTTP_SERVICE_UNAVAILABLE || |
| error == google_apis::HTTP_INTERNAL_SERVER_ERROR; |
| if (is_server_error) { |
| if (throttle_count_ < kMaxThrottleCount) |
| ++throttle_count_; |
| UpdateWait(); |
| } else { |
| throttle_count_ = 0; |
| } |
| |
| const bool should_retry = |
| is_server_error && job_entry->retry_count < kMaxRetryCount; |
| if (should_retry) { |
| job_entry->cancel_callback.Reset(); |
| job_info->state = STATE_RETRY; |
| NotifyJobUpdated(*job_info); |
| |
| ++job_entry->retry_count; |
| |
| // Requeue the job. |
| QueueJob(job_id); |
| } else { |
| NotifyJobDone(*job_info, error); |
| // The job has finished, no retry will happen in the scheduler. Now we can |
| // remove the job info from the map. |
| job_map_.Remove(job_id); |
| } |
| |
| // Post a task to continue the job loop. This allows us to finish handling |
| // the current job before starting the next one. |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, base::BindOnce(&JobScheduler::DoJobLoop, |
| weak_ptr_factory_.GetWeakPtr(), queue_type)); |
| return !should_retry; |
| } |
| |
| void JobScheduler::OnGetTeamDriveListJobDone( |
| JobID job_id, |
| const google_apis::TeamDriveListCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| std::unique_ptr<google_apis::TeamDriveList> team_drive_list) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(team_drive_list)); |
| } |
| |
| void JobScheduler::OnGetFileListJobDone( |
| JobID job_id, |
| const google_apis::FileListCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| std::unique_ptr<google_apis::FileList> file_list) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(file_list)); |
| } |
| |
| void JobScheduler::OnGetChangeListJobDone( |
| JobID job_id, |
| const google_apis::ChangeListCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| std::unique_ptr<google_apis::ChangeList> change_list) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(change_list)); |
| } |
| |
| void JobScheduler::OnGetFileResourceJobDone( |
| JobID job_id, |
| const google_apis::FileResourceCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| std::unique_ptr<google_apis::FileResource> entry) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(entry)); |
| } |
| |
| void JobScheduler::OnGetAboutResourceJobDone( |
| JobID job_id, |
| const google_apis::AboutResourceCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| std::unique_ptr<google_apis::AboutResource> about_resource) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(about_resource)); |
| } |
| |
| void JobScheduler::OnGetStartPageTokenDone( |
| JobID job_id, |
| const google_apis::StartPageTokenCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| std::unique_ptr<google_apis::StartPageToken> start_page_token) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(start_page_token)); |
| } |
| |
| void JobScheduler::OnEntryActionJobDone( |
| JobID job_id, |
| const google_apis::EntryActionCallback& callback, |
| google_apis::DriveApiErrorCode error) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error); |
| } |
| |
| void JobScheduler::OnDownloadActionJobDone( |
| JobID job_id, |
| const google_apis::DownloadActionCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| const base::FilePath& temp_file) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, temp_file); |
| } |
| |
| void JobScheduler::OnUploadCompletionJobDone( |
| JobID job_id, |
| const ResumeUploadParams& resume_params, |
| const google_apis::FileResourceCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| const GURL& upload_location, |
| std::unique_ptr<google_apis::FileResource> entry) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!callback.is_null()); |
| |
| if (!upload_location.is_empty()) { |
| // If upload_location is available, update the task to resume the |
| // upload process from the terminated point. |
| // When we need to retry, the error code should be HTTP_SERVICE_UNAVAILABLE |
| // so OnJobDone called below will be in charge to re-queue the job. |
| JobEntry* job_entry = job_map_.Lookup(job_id); |
| DCHECK(job_entry); |
| |
| ResumeUploadFileParams params; |
| params.upload_location = upload_location; |
| params.local_file_path = resume_params.local_file_path; |
| params.content_type = resume_params.content_type; |
| params.callback = base::Bind(&JobScheduler::OnResumeUploadFileDone, |
| weak_ptr_factory_.GetWeakPtr(), |
| job_id, |
| job_entry->task, |
| callback); |
| params.progress_callback = base::Bind(&JobScheduler::UpdateProgress, |
| weak_ptr_factory_.GetWeakPtr(), |
| job_id); |
| job_entry->task = base::Bind(&RunResumeUploadFile, uploader_.get(), params); |
| } |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(entry)); |
| } |
| |
| void JobScheduler::OnResumeUploadFileDone( |
| JobID job_id, |
| const base::Callback<google_apis::CancelCallback()>& original_task, |
| const google_apis::FileResourceCallback& callback, |
| google_apis::DriveApiErrorCode error, |
| const GURL& upload_location, |
| std::unique_ptr<google_apis::FileResource> entry) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DCHECK(!original_task.is_null()); |
| DCHECK(!callback.is_null()); |
| |
| if (upload_location.is_empty()) { |
| // If upload_location is not available, we should discard it and stop trying |
| // to resume. Restore the original task. |
| JobEntry* job_entry = job_map_.Lookup(job_id); |
| DCHECK(job_entry); |
| job_entry->task = original_task; |
| } |
| |
| if (OnJobDone(job_id, error)) |
| callback.Run(error, std::move(entry)); |
| } |
| |
| void JobScheduler::UpdateProgress(JobID job_id, |
| int64_t progress, |
| int64_t total) { |
| JobEntry* job_entry = job_map_.Lookup(job_id); |
| DCHECK(job_entry); |
| |
| job_entry->job_info.num_completed_bytes = progress; |
| if (total != -1) |
| job_entry->job_info.num_total_bytes = total; |
| NotifyJobUpdated(job_entry->job_info); |
| } |
| |
| void JobScheduler::OnConnectionChanged(network::mojom::ConnectionType type) { |
| // When connection type switches from one connection to another, |
| // CONNECTION_NONE signal comes right before the changed connection signal. |
| // Ignore such signals to avoid aborting jobs. |
| if (type == network::mojom::ConnectionType::CONNECTION_NONE && |
| !network_connection_tracker_->IsOffline()) |
| return; |
| |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| // Resume the job loop. |
| // The network connection status will be checked |
| // in GetCurrentAcceptedPriority(). |
| for (int i = METADATA_QUEUE; i < NUM_QUEUES; ++i) |
| DoJobLoop(static_cast<QueueType>(i)); |
| } |
| |
| JobScheduler::QueueType JobScheduler::GetJobQueueType(JobType type) { |
| switch (type) { |
| case TYPE_GET_ABOUT_RESOURCE: |
| case TYPE_GET_APP_LIST: |
| case TYPE_GET_ALL_TEAM_DRIVE_LIST: |
| case TYPE_GET_ALL_RESOURCE_LIST: |
| case TYPE_GET_RESOURCE_LIST_IN_DIRECTORY: |
| case TYPE_SEARCH: |
| case TYPE_GET_CHANGE_LIST: |
| case TYPE_GET_REMAINING_CHANGE_LIST: |
| case TYPE_GET_REMAINING_TEAM_DRIVE_LIST: |
| case TYPE_GET_REMAINING_FILE_LIST: |
| case TYPE_GET_RESOURCE_ENTRY: |
| case TYPE_GET_SHARE_URL: |
| case TYPE_GET_START_PAGE_TOKEN: |
| case TYPE_TRASH_RESOURCE: |
| case TYPE_COPY_RESOURCE: |
| case TYPE_UPDATE_RESOURCE: |
| case TYPE_ADD_RESOURCE_TO_DIRECTORY: |
| case TYPE_REMOVE_RESOURCE_FROM_DIRECTORY: |
| case TYPE_ADD_NEW_DIRECTORY: |
| case TYPE_ADD_PERMISSION: |
| return METADATA_QUEUE; |
| |
| case TYPE_DOWNLOAD_FILE: |
| case TYPE_UPLOAD_NEW_FILE: |
| case TYPE_UPLOAD_EXISTING_FILE: |
| return FILE_QUEUE; |
| } |
| NOTREACHED(); |
| return FILE_QUEUE; |
| } |
| |
| void JobScheduler::AbortNotRunningJob(JobEntry* job, |
| google_apis::DriveApiErrorCode error) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| const base::TimeDelta elapsed = base::Time::Now() - job->job_info.start_time; |
| const QueueType queue_type = GetJobQueueType(job->job_info.job_type); |
| logger_->Log(logging::LOG_INFO, |
| "Job aborted: %s => %s (elapsed time: %sms) - %s", |
| job->job_info.ToString().c_str(), |
| DriveApiErrorCodeToString(error).c_str(), |
| base::NumberToString(elapsed.InMilliseconds()).c_str(), |
| GetQueueInfo(queue_type).c_str()); |
| |
| base::Callback<void(google_apis::DriveApiErrorCode)> callback = |
| job->abort_callback; |
| queue_[GetJobQueueType(job->job_info.job_type)]->Remove(job->job_info.job_id); |
| NotifyJobDone(job->job_info, error); |
| job_map_.Remove(job->job_info.job_id); |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, base::BindOnce(callback, error)); |
| } |
| |
| void JobScheduler::NotifyJobAdded(const JobInfo& job_info) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| for (auto& observer : observer_list_) |
| observer.OnJobAdded(job_info); |
| } |
| |
| void JobScheduler::NotifyJobDone(const JobInfo& job_info, |
| google_apis::DriveApiErrorCode error) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| for (auto& observer : observer_list_) |
| observer.OnJobDone(job_info, GDataToFileError(error)); |
| } |
| |
| void JobScheduler::NotifyJobUpdated(const JobInfo& job_info) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| for (auto& observer : observer_list_) |
| observer.OnJobUpdated(job_info); |
| } |
| |
| std::string JobScheduler::GetQueueInfo(QueueType type) const { |
| return QueueTypeToString(type) + " " + queue_[type]->ToString(); |
| } |
| |
| // static |
| std::string JobScheduler::QueueTypeToString(QueueType type) { |
| switch (type) { |
| case METADATA_QUEUE: |
| return "METADATA_QUEUE"; |
| case FILE_QUEUE: |
| return "FILE_QUEUE"; |
| case NUM_QUEUES: |
| break; // This value is just a sentinel. Should never be used. |
| } |
| NOTREACHED(); |
| return ""; |
| } |
| |
| } // namespace drive |