| // Copyright 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 "chrome/browser/sync_file_system/drive_backend/register_app_task.h" |
| |
| #include "base/bind.h" |
| #include "base/location.h" |
| #include "chrome/browser/drive/drive_api_util.h" |
| #include "chrome/browser/drive/drive_service_interface.h" |
| #include "chrome/browser/sync_file_system/drive_backend/drive_backend_constants.h" |
| #include "chrome/browser/sync_file_system/drive_backend/folder_creator.h" |
| #include "chrome/browser/sync_file_system/drive_backend/metadata_database.h" |
| #include "chrome/browser/sync_file_system/drive_backend/metadata_database.pb.h" |
| #include "chrome/browser/sync_file_system/drive_backend/sync_engine_context.h" |
| #include "chrome/browser/sync_file_system/drive_backend/tracker_id_set.h" |
| #include "chrome/browser/sync_file_system/syncable_file_system_util.h" |
| #include "google_apis/drive/drive_api_parser.h" |
| #include "google_apis/drive/gdata_wapi_parser.h" |
| |
| namespace sync_file_system { |
| namespace drive_backend { |
| |
| namespace { |
| |
| bool CompareOnCTime(const FileTracker& left, |
| const FileTracker& right) { |
| return left.synced_details().creation_time() < |
| right.synced_details().creation_time(); |
| } |
| |
| } // namespace |
| |
| RegisterAppTask::RegisterAppTask(SyncEngineContext* sync_context, |
| const std::string& app_id) |
| : sync_context_(sync_context), |
| create_folder_retry_count_(0), |
| app_id_(app_id), |
| weak_ptr_factory_(this) { |
| } |
| |
| RegisterAppTask::~RegisterAppTask() { |
| } |
| |
| bool RegisterAppTask::CanFinishImmediately() { |
| return metadata_database() && |
| metadata_database()->FindAppRootTracker(app_id_, nullptr); |
| } |
| |
| void RegisterAppTask::RunExclusive(const SyncStatusCallback& callback) { |
| if (create_folder_retry_count_++ >= kMaxRetry) { |
| callback.Run(SYNC_STATUS_FAILED); |
| return; |
| } |
| |
| if (!metadata_database() || !drive_service()) { |
| callback.Run(SYNC_STATUS_FAILED); |
| return; |
| } |
| |
| int64 sync_root = metadata_database()->GetSyncRootTrackerID(); |
| TrackerIDSet trackers; |
| if (!metadata_database()->FindTrackersByParentAndTitle( |
| sync_root, app_id_, &trackers)) { |
| CreateAppRootFolder(callback); |
| return; |
| } |
| |
| FileTracker candidate; |
| if (!FilterCandidates(trackers, &candidate)) { |
| CreateAppRootFolder(callback); |
| return; |
| } |
| |
| if (candidate.active()) { |
| DCHECK(candidate.tracker_kind() == TRACKER_KIND_APP_ROOT || |
| candidate.tracker_kind() == TRACKER_KIND_DISABLED_APP_ROOT); |
| callback.Run(SYNC_STATUS_OK); |
| return; |
| } |
| |
| RegisterAppIntoDatabase(candidate, callback); |
| } |
| |
| void RegisterAppTask::CreateAppRootFolder(const SyncStatusCallback& callback) { |
| int64 sync_root_tracker_id = metadata_database()->GetSyncRootTrackerID(); |
| FileTracker sync_root_tracker; |
| bool should_success = metadata_database()->FindTrackerByTrackerID( |
| sync_root_tracker_id, |
| &sync_root_tracker); |
| DCHECK(should_success); |
| |
| DCHECK(!folder_creator_); |
| folder_creator_.reset(new FolderCreator( |
| drive_service(), metadata_database(), |
| sync_root_tracker.file_id(), app_id_)); |
| folder_creator_->Run(base::Bind( |
| &RegisterAppTask::DidCreateAppRootFolder, |
| weak_ptr_factory_.GetWeakPtr(), callback)); |
| } |
| |
| void RegisterAppTask::DidCreateAppRootFolder( |
| const SyncStatusCallback& callback, |
| const std::string& folder_id, |
| SyncStatusCode status) { |
| scoped_ptr<FolderCreator> deleter = folder_creator_.Pass(); |
| if (status != SYNC_STATUS_OK) { |
| callback.Run(status); |
| return; |
| } |
| |
| RunExclusive(callback); |
| } |
| |
| bool RegisterAppTask::FilterCandidates(const TrackerIDSet& trackers, |
| FileTracker* candidate) { |
| DCHECK(candidate); |
| if (trackers.has_active()) { |
| if (metadata_database()->FindTrackerByTrackerID( |
| trackers.active_tracker(), candidate)) { |
| return true; |
| } |
| NOTREACHED(); |
| } |
| |
| scoped_ptr<FileTracker> oldest_tracker; |
| for (TrackerIDSet::const_iterator itr = trackers.begin(); |
| itr != trackers.end(); ++itr) { |
| scoped_ptr<FileTracker> tracker(new FileTracker); |
| if (!metadata_database()->FindTrackerByTrackerID( |
| *itr, tracker.get())) { |
| NOTREACHED(); |
| continue; |
| } |
| |
| FileMetadata file; |
| DCHECK(!tracker->active()); |
| DCHECK(tracker->has_synced_details()); |
| |
| if (!metadata_database()->FindFileByFileID(tracker->file_id(), &file)) { |
| NOTREACHED(); |
| // The parent folder is sync-root, whose contents are fetched in |
| // initialization sequence. |
| // So at this point, direct children of sync-root should have |
| // FileMetadata. |
| continue; |
| } |
| |
| if (file.details().file_kind() != FILE_KIND_FOLDER) |
| continue; |
| |
| if (file.details().missing()) |
| continue; |
| |
| if (oldest_tracker && CompareOnCTime(*oldest_tracker, *tracker)) |
| continue; |
| |
| oldest_tracker = tracker.Pass(); |
| } |
| |
| if (!oldest_tracker) |
| return false; |
| |
| *candidate = *oldest_tracker; |
| return true; |
| } |
| |
| void RegisterAppTask::RegisterAppIntoDatabase( |
| const FileTracker& tracker, |
| const SyncStatusCallback& callback) { |
| SyncStatusCode status = |
| metadata_database()->RegisterApp(app_id_, tracker.file_id()); |
| callback.Run(status); |
| } |
| |
| MetadataDatabase* RegisterAppTask::metadata_database() { |
| return sync_context_->GetMetadataDatabase(); |
| } |
| |
| drive::DriveServiceInterface* RegisterAppTask::drive_service() { |
| return sync_context_->GetDriveService(); |
| } |
| |
| } // namespace drive_backend |
| } // namespace sync_file_system |