| // Copyright 2019 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/optimization_guide/core/prediction_manager.h" |
| |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/containers/flat_map.h" |
| #include "base/containers/flat_set.h" |
| #include "base/containers/flat_tree.h" |
| #include "base/functional/callback.h" |
| #include "base/guid.h" |
| #include "base/metrics/histogram_functions.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/metrics/histogram_macros_local.h" |
| #include "base/observer_list.h" |
| #include "base/path_service.h" |
| #include "base/rand_util.h" |
| #include "base/sequence_checker.h" |
| #include "base/task/sequenced_task_runner.h" |
| #include "base/task/single_thread_task_runner.h" |
| #include "base/task/thread_pool.h" |
| #include "base/time/default_clock.h" |
| #include "base/time/time.h" |
| #include "components/optimization_guide/core/model_info.h" |
| #include "components/optimization_guide/core/model_util.h" |
| #include "components/optimization_guide/core/optimization_guide_constants.h" |
| #include "components/optimization_guide/core/optimization_guide_enums.h" |
| #include "components/optimization_guide/core/optimization_guide_features.h" |
| #include "components/optimization_guide/core/optimization_guide_logger.h" |
| #include "components/optimization_guide/core/optimization_guide_permissions_util.h" |
| #include "components/optimization_guide/core/optimization_guide_prefs.h" |
| #include "components/optimization_guide/core/optimization_guide_store.h" |
| #include "components/optimization_guide/core/optimization_guide_switches.h" |
| #include "components/optimization_guide/core/optimization_guide_util.h" |
| #include "components/optimization_guide/core/optimization_target_model_observer.h" |
| #include "components/optimization_guide/core/prediction_model_download_manager.h" |
| #include "components/optimization_guide/core/prediction_model_fetcher_impl.h" |
| #include "components/optimization_guide/core/prediction_model_override.h" |
| #include "components/optimization_guide/core/prediction_model_store.h" |
| #include "components/optimization_guide/core/store_update_data.h" |
| #include "components/optimization_guide/optimization_guide_internals/webui/optimization_guide_internals.mojom.h" |
| #include "components/optimization_guide/proto/models.pb.h" |
| #include "components/prefs/pref_service.h" |
| #include "mojo/public/cpp/bindings/remote.h" |
| #include "services/network/public/cpp/shared_url_loader_factory.h" |
| |
| namespace optimization_guide { |
| |
| namespace { |
| |
| // Provide a random time delta in seconds before fetching models. |
| base::TimeDelta RandomFetchDelay() { |
| return base::Seconds( |
| base::RandInt(features::PredictionModelFetchRandomMinDelaySecs(), |
| features::PredictionModelFetchRandomMaxDelaySecs())); |
| } |
| |
| proto::ModelCacheKey GetModelCacheKey(const std::string& locale) { |
| proto::ModelCacheKey model_cache_key; |
| model_cache_key.set_locale(locale); |
| return model_cache_key; |
| } |
| |
| // Util class for recording the state of a prediction model. The result is |
| // recorded when it goes out of scope and its destructor is called. |
| class ScopedPredictionManagerModelStatusRecorder { |
| public: |
| explicit ScopedPredictionManagerModelStatusRecorder( |
| proto::OptimizationTarget optimization_target) |
| : optimization_target_(optimization_target) {} |
| |
| ~ScopedPredictionManagerModelStatusRecorder() { |
| DCHECK_NE(status_, PredictionManagerModelStatus::kUnknown); |
| base::UmaHistogramEnumeration( |
| "OptimizationGuide.ShouldTargetNavigation.PredictionModelStatus", |
| status_); |
| |
| base::UmaHistogramEnumeration( |
| "OptimizationGuide.ShouldTargetNavigation.PredictionModelStatus." + |
| GetStringNameForOptimizationTarget(optimization_target_), |
| status_); |
| } |
| |
| void set_status(PredictionManagerModelStatus status) { status_ = status; } |
| |
| private: |
| PredictionManagerModelStatus status_ = PredictionManagerModelStatus::kUnknown; |
| const proto::OptimizationTarget optimization_target_; |
| }; |
| |
| // Util class for recording the construction and validation of a prediction |
| // model. The result is recorded when it goes out of scope and its destructor is |
| // called. |
| class ScopedPredictionModelConstructionAndValidationRecorder { |
| public: |
| explicit ScopedPredictionModelConstructionAndValidationRecorder( |
| proto::OptimizationTarget optimization_target) |
| : validation_start_time_(base::TimeTicks::Now()), |
| optimization_target_(optimization_target) {} |
| |
| ~ScopedPredictionModelConstructionAndValidationRecorder() { |
| base::UmaHistogramBoolean("OptimizationGuide.IsPredictionModelValid", |
| is_valid_); |
| base::UmaHistogramBoolean( |
| "OptimizationGuide.IsPredictionModelValid." + |
| GetStringNameForOptimizationTarget(optimization_target_), |
| is_valid_); |
| |
| // Only record the timing if the model is valid and was able to be |
| // constructed. |
| if (is_valid_) { |
| base::TimeDelta validation_latency = |
| base::TimeTicks::Now() - validation_start_time_; |
| base::UmaHistogramTimes( |
| "OptimizationGuide.PredictionModelValidationLatency", |
| validation_latency); |
| base::UmaHistogramTimes( |
| "OptimizationGuide.PredictionModelValidationLatency." + |
| GetStringNameForOptimizationTarget(optimization_target_), |
| validation_latency); |
| } |
| } |
| |
| void set_is_valid(bool is_valid) { is_valid_ = is_valid; } |
| |
| private: |
| bool is_valid_ = true; |
| const base::TimeTicks validation_start_time_; |
| const proto::OptimizationTarget optimization_target_; |
| }; |
| |
| void RecordModelUpdateVersion(const proto::ModelInfo& model_info) { |
| base::UmaHistogramSparse( |
| "OptimizationGuide.PredictionModelUpdateVersion." + |
| GetStringNameForOptimizationTarget(model_info.optimization_target()), |
| model_info.version()); |
| } |
| |
| void RecordLifecycleState(proto::OptimizationTarget optimization_target, |
| ModelDeliveryEvent event) { |
| base::UmaHistogramEnumeration( |
| "OptimizationGuide.PredictionManager.ModelDeliveryEvents." + |
| GetStringNameForOptimizationTarget(optimization_target), |
| event); |
| } |
| |
| // Returns whether models should be fetched from the |
| // remote Optimization Guide Service. |
| bool ShouldFetchModels(bool off_the_record, bool component_updates_enabled) { |
| return features::IsRemoteFetchingEnabled() && !off_the_record && |
| features::IsModelDownloadingEnabled() && component_updates_enabled; |
| } |
| |
| // Returns whether the model metadata proto is on the server allowlist. |
| bool IsModelMetadataTypeOnServerAllowlist(const proto::Any& model_metadata) { |
| return model_metadata.type_url() == |
| "type.googleapis.com/" |
| "google.internal.chrome.optimizationguide.v1." |
| "OnDeviceTailSuggestModelMetadata" || |
| model_metadata.type_url() == |
| "type.googleapis.com/" |
| "google.internal.chrome.optimizationguide.v1." |
| "PageEntitiesModelMetadata" || |
| model_metadata.type_url() == |
| "type.googleapis.com/" |
| "google.internal.chrome.optimizationguide.v1." |
| "PageTopicsModelMetadata" || |
| model_metadata.type_url() == |
| "type.googleapis.com/" |
| "google.internal.chrome.optimizationguide.v1." |
| "SegmentationModelMetadata" || |
| model_metadata.type_url() == |
| "type.googleapis.com/" |
| "google.privacy.webpermissionpredictions.v1." |
| "WebPermissionPredictionsModelMetadata"; |
| } |
| |
| void RecordModelAvailableAtRegistration( |
| proto::OptimizationTarget optimization_target, |
| bool model_available_at_registration) { |
| base::UmaHistogramBoolean( |
| "OptimizationGuide.PredictionManager.ModelAvailableAtRegistration." + |
| GetStringNameForOptimizationTarget(optimization_target), |
| model_available_at_registration); |
| } |
| |
| } // namespace |
| |
| PredictionManager::PredictionManager( |
| base::WeakPtr<OptimizationGuideStore> model_and_features_store, |
| PredictionModelStore* prediction_model_store, |
| scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory, |
| PrefService* pref_service, |
| bool off_the_record, |
| const std::string& application_locale, |
| const base::FilePath& models_dir_path, |
| OptimizationGuideLogger* optimization_guide_logger, |
| BackgroundDownloadServiceProvider background_download_service_provider, |
| ComponentUpdatesEnabledProvider component_updates_enabled_provider) |
| : prediction_model_download_manager_(nullptr), |
| model_and_features_store_(model_and_features_store), |
| prediction_model_store_(prediction_model_store), |
| url_loader_factory_(url_loader_factory), |
| optimization_guide_logger_(optimization_guide_logger), |
| pref_service_(pref_service), |
| component_updates_enabled_provider_(component_updates_enabled_provider), |
| clock_(base::DefaultClock::GetInstance()), |
| off_the_record_(off_the_record), |
| application_locale_(application_locale), |
| model_cache_key_(GetModelCacheKey(application_locale_)), |
| models_dir_path_(models_dir_path) { |
| DCHECK(!features::IsInstallWideModelStoreEnabled() || |
| prediction_model_store_); |
| DCHECK(!model_and_features_store_ || !prediction_model_store_); |
| Initialize(std::move(background_download_service_provider)); |
| } |
| |
| PredictionManager::~PredictionManager() { |
| if (prediction_model_download_manager_) |
| prediction_model_download_manager_->RemoveObserver(this); |
| } |
| |
| void PredictionManager::Initialize( |
| BackgroundDownloadServiceProvider background_download_service_provider) { |
| if (features::IsInstallWideModelStoreEnabled()) { |
| store_is_ready_ = true; |
| init_time_ = base::TimeTicks::Now(); |
| LoadPredictionModels(GetRegisteredOptimizationTargets()); |
| LOCAL_HISTOGRAM_BOOLEAN( |
| "OptimizationGuide.PredictionManager.StoreInitialized", true); |
| } else if (model_and_features_store_) { |
| model_and_features_store_->Initialize( |
| switches::ShouldPurgeModelAndFeaturesStoreOnStartup(), |
| base::BindOnce(&PredictionManager::OnStoreInitialized, |
| ui_weak_ptr_factory_.GetWeakPtr(), |
| std::move(background_download_service_provider))); |
| } |
| } |
| |
| void PredictionManager::AddObserverForOptimizationTargetModel( |
| proto::OptimizationTarget optimization_target, |
| const absl::optional<proto::Any>& model_metadata, |
| OptimizationTargetModelObserver* observer) { |
| DCHECK(registered_observers_for_optimization_targets_.find( |
| optimization_target) == |
| registered_observers_for_optimization_targets_.end()); |
| |
| // As DCHECKS don't run in the wild, just do not register the observer if |
| // something is already registered for the type. Otherwise, file reads may |
| // blow up. |
| if (registered_observers_for_optimization_targets_.find( |
| optimization_target) != |
| registered_observers_for_optimization_targets_.end()) { |
| DLOG(ERROR) << "Did not add observer for optimization target " |
| << static_cast<int>(optimization_target) |
| << " since an observer for the target was already registered "; |
| return; |
| } |
| |
| registered_observers_for_optimization_targets_[optimization_target] |
| .AddObserver(observer); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Observer added for OptimizationTarget: " << optimization_target; |
| } |
| |
| // Notify observer of existing model file path. |
| auto model_it = optimization_target_model_info_map_.find(optimization_target); |
| if (model_it != optimization_target_model_info_map_.end()) { |
| observer->OnModelUpdated(optimization_target, *model_it->second); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "OnModelFileUpdated for OptimizationTarget: " |
| << optimization_target << "\nFile path: " |
| << (*model_it->second).GetModelFilePath().AsUTF8Unsafe() |
| << "\nHas metadata: " << (model_metadata ? "True" : "False"); |
| } |
| RecordLifecycleState(optimization_target, |
| ModelDeliveryEvent::kModelDeliveredAtRegistration); |
| } |
| base::UmaHistogramMediumTimes( |
| "OptimizationGuide.PredictionManager.RegistrationTimeSinceServiceInit." + |
| GetStringNameForOptimizationTarget(optimization_target), |
| !init_time_.is_null() ? base::TimeTicks::Now() - init_time_ |
| : base::TimeDelta()); |
| |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (registered_optimization_targets_and_metadata_.contains( |
| optimization_target)) { |
| return; |
| } |
| DCHECK(!model_metadata || |
| IsModelMetadataTypeOnServerAllowlist(*model_metadata)); |
| |
| registered_optimization_targets_and_metadata_.emplace(optimization_target, |
| model_metadata); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Registered new OptimizationTarget: " << optimization_target; |
| } |
| |
| // Before loading/fetching models and features, the store must be ready. |
| if (!store_is_ready_) |
| return; |
| |
| // If no fetch is scheduled, maybe schedule one. |
| if (!fetch_timer_.IsRunning()) |
| MaybeScheduleFirstModelFetch(); |
| |
| // Otherwise, load prediction models for any newly registered targets. |
| LoadPredictionModels({optimization_target}); |
| } |
| |
| void PredictionManager::RemoveObserverForOptimizationTargetModel( |
| proto::OptimizationTarget optimization_target, |
| OptimizationTargetModelObserver* observer) { |
| auto observers_it = |
| registered_observers_for_optimization_targets_.find(optimization_target); |
| if (observers_it == registered_observers_for_optimization_targets_.end()) |
| return; |
| |
| observers_it->second.RemoveObserver(observer); |
| } |
| |
| base::flat_set<proto::OptimizationTarget> |
| PredictionManager::GetRegisteredOptimizationTargets() const { |
| base::flat_set<proto::OptimizationTarget> optimization_targets; |
| for (const auto& optimization_target_and_metadata : |
| registered_optimization_targets_and_metadata_) { |
| optimization_targets.insert(optimization_target_and_metadata.first); |
| } |
| return optimization_targets; |
| } |
| |
| void PredictionManager::SetPredictionModelFetcherForTesting( |
| std::unique_ptr<PredictionModelFetcher> prediction_model_fetcher) { |
| prediction_model_fetcher_ = std::move(prediction_model_fetcher); |
| } |
| |
| void PredictionManager::SetPredictionModelDownloadManagerForTesting( |
| std::unique_ptr<PredictionModelDownloadManager> |
| prediction_model_download_manager) { |
| prediction_model_download_manager_ = |
| std::move(prediction_model_download_manager); |
| } |
| |
| void PredictionManager::FetchModels(bool is_first_model_fetch) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| // The histogram that gets recorded here is used for integration tests that |
| // pass in a model override. For simplicity, we place the recording of this |
| // histogram here rather than somewhere else earlier in the session |
| // initialization flow since the model engine version needs to continuously be |
| // updated for the fetch. |
| proto::ModelInfo base_model_info; |
| // There should only be one supported model engine version at a time. |
| base_model_info.add_supported_model_engine_versions( |
| proto::MODEL_ENGINE_VERSION_TFLITE_2_12); |
| // This histogram is used for integration tests. Do not remove. |
| // Update this to be 10000 if/when we exceed 100 model engine versions. |
| LOCAL_HISTOGRAM_COUNTS_100( |
| "OptimizationGuide.PredictionManager.SupportedModelEngineVersion", |
| static_cast<int>( |
| *base_model_info.supported_model_engine_versions().begin())); |
| |
| if (switches::IsModelOverridePresent()) |
| return; |
| |
| if (!ShouldFetchModels(off_the_record_, pref_service_)) |
| return; |
| |
| if (is_first_model_fetch) { |
| DCHECK(!init_time_.is_null()); |
| base::UmaHistogramMediumTimes( |
| "OptimizationGuide.PredictionManager.FirstModelFetchSinceServiceInit", |
| base::TimeTicks::Now() - init_time_); |
| } |
| |
| // Models should not be fetched if there are no optimization targets |
| // registered. |
| if (registered_optimization_targets_and_metadata_.empty()) |
| return; |
| |
| // We should have already created a prediction model download manager if we |
| // initiated the fetching of models. |
| DCHECK(prediction_model_download_manager_); |
| if (prediction_model_download_manager_) { |
| bool download_service_available = |
| prediction_model_download_manager_->IsAvailableForDownloads(); |
| base::UmaHistogramBoolean( |
| "OptimizationGuide.PredictionManager." |
| "DownloadServiceAvailabilityBlockedFetch", |
| !download_service_available); |
| if (!download_service_available) { |
| for (const auto& optimization_target_and_metadata : |
| registered_optimization_targets_and_metadata_) { |
| RecordLifecycleState(optimization_target_and_metadata.first, |
| ModelDeliveryEvent::kDownloadServiceUnavailable); |
| } |
| // We cannot download any models from the server, so don't refresh them. |
| return; |
| } |
| |
| prediction_model_download_manager_->CancelAllPendingDownloads(); |
| } |
| |
| // NOTE: ALL PRECONDITIONS FOR THIS FUNCTION MUST BE CHECKED ABOVE THIS LINE. |
| // It is assumed that if we proceed past here, that a fetch will at least be |
| // attempted. |
| |
| if (!prediction_model_fetcher_) { |
| prediction_model_fetcher_ = std::make_unique<PredictionModelFetcherImpl>( |
| url_loader_factory_, |
| features::GetOptimizationGuideServiceGetModelsURL()); |
| } |
| |
| std::vector<proto::ModelInfo> models_info = std::vector<proto::ModelInfo>(); |
| models_info.reserve(registered_optimization_targets_and_metadata_.size()); |
| |
| // For now, we will fetch for all registered optimization targets. |
| for (const auto& optimization_target_and_metadata : |
| registered_optimization_targets_and_metadata_) { |
| proto::ModelInfo model_info(base_model_info); |
| model_info.set_optimization_target(optimization_target_and_metadata.first); |
| if (optimization_target_and_metadata.second.has_value()) { |
| *model_info.mutable_model_metadata() = |
| *optimization_target_and_metadata.second; |
| } |
| |
| auto model_it = optimization_target_model_info_map_.find( |
| optimization_target_and_metadata.first); |
| if (model_it != optimization_target_model_info_map_.end()) |
| model_info.set_version(model_it->second.get()->GetVersion()); |
| |
| models_info.push_back(model_info); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Fetching models for Optimization Target " |
| << model_info.optimization_target(); |
| } |
| RecordLifecycleState(optimization_target_and_metadata.first, |
| ModelDeliveryEvent::kGetModelsRequest); |
| } |
| |
| bool fetch_initiated = |
| prediction_model_fetcher_->FetchOptimizationGuideServiceModels( |
| models_info, proto::CONTEXT_BATCH_UPDATE_MODELS, application_locale_, |
| base::BindOnce(&PredictionManager::OnModelsFetched, |
| ui_weak_ptr_factory_.GetWeakPtr(), models_info)); |
| |
| if (fetch_initiated) |
| SetLastModelFetchAttemptTime(clock_->Now()); |
| // Schedule the next fetch regardless since we may not have initiated a fetch |
| // due to a network condition and trying in the next minute to see if that is |
| // unblocked is only a timer firing and not an actual query to the server. |
| ScheduleModelsFetch(); |
| } |
| |
| void PredictionManager::OnModelsFetched( |
| const std::vector<proto::ModelInfo> models_request_info, |
| absl::optional<std::unique_ptr<proto::GetModelsResponse>> |
| get_models_response_data) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (!get_models_response_data) { |
| for (const auto& model_info : models_request_info) { |
| RecordLifecycleState(model_info.optimization_target(), |
| ModelDeliveryEvent::kGetModelsResponseFailure); |
| } |
| return; |
| } |
| SetLastModelFetchSuccessTime(clock_->Now()); |
| |
| if ((*get_models_response_data)->models_size() > 0) { |
| UpdatePredictionModels((*get_models_response_data)->models()); |
| } |
| |
| fetch_timer_.Stop(); |
| ScheduleModelsFetch(); |
| } |
| |
| void PredictionManager::UpdateModelMetadata( |
| const proto::PredictionModel& model) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (!features::IsInstallWideModelStoreEnabled()) { |
| return; |
| } |
| |
| // Model update is needed when download URL is set, which indicates the model |
| // has changed. |
| if (model.model().download_url().empty()) { |
| return; |
| } |
| if (!model.model_info().has_model_cache_key()) { |
| return; |
| } |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Optimization Target: " << model.model_info().optimization_target() |
| << " for locale: " << application_locale_ |
| << " sharing models with locale: " |
| << model.model_info().model_cache_key().locale(); |
| } |
| prediction_model_store_->UpdateModelCacheKeyMapping( |
| model.model_info().optimization_target(), model_cache_key_, |
| model.model_info().model_cache_key()); |
| } |
| |
| bool PredictionManager::ShouldDownloadNewModel( |
| const proto::PredictionModel& model) const { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| // No download needed if URL is not set. |
| if (model.model().download_url().empty()) { |
| return false; |
| } |
| if (!features::IsInstallWideModelStoreEnabled()) { |
| return true; |
| } |
| // Though the server set the download URL indicating the model is old or does |
| // not exist in client, the same version model could exist in the store, if |
| // the model is shared across different profile characteristics, based on |
| // ModelCacheKey. So, download only when the same version is not found in the |
| // store. |
| return !prediction_model_store_->HasModelWithVersion( |
| model.model_info().optimization_target(), model_cache_key_, |
| model.model_info().version()); |
| } |
| |
| void PredictionManager::StartModelDownload( |
| proto::OptimizationTarget optimization_target, |
| const GURL& download_url) { |
| // We should only be downloading models and updating the store for |
| // on-the-record profiles and after the store has been initialized. |
| DCHECK(prediction_model_download_manager_); |
| if (!prediction_model_download_manager_) { |
| return; |
| } |
| if (download_url.is_valid()) { |
| prediction_model_download_manager_->StartDownload(download_url, |
| optimization_target); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Model download started for Optimization Target: " |
| << optimization_target << " download URL: " << download_url; |
| } |
| } |
| RecordLifecycleState(optimization_target, |
| download_url.is_valid() |
| ? ModelDeliveryEvent::kDownloadServiceRequest |
| : ModelDeliveryEvent::kDownloadURLInvalid); |
| base::UmaHistogramBoolean( |
| "OptimizationGuide.PredictionManager.IsDownloadUrlValid." + |
| GetStringNameForOptimizationTarget(optimization_target), |
| download_url.is_valid()); |
| } |
| |
| void PredictionManager::MaybeDownloadOrUpdatePredictionModel( |
| proto::OptimizationTarget optimization_target, |
| const proto::PredictionModel& get_models_response_model, |
| std::unique_ptr<proto::PredictionModel> loaded_model) { |
| if (!loaded_model) { |
| // Model load failed, redownload the model. |
| RecordLifecycleState(optimization_target, |
| ModelDeliveryEvent::kModelLoadFailed); |
| DCHECK(!get_models_response_model.model().download_url().empty()); |
| StartModelDownload(optimization_target, |
| GURL(get_models_response_model.model().download_url())); |
| return; |
| } |
| prediction_model_store_->UpdateMetadataForExistingModel( |
| optimization_target, model_cache_key_, |
| get_models_response_model.model_info()); |
| OnLoadPredictionModel(optimization_target, |
| /*record_availability_metrics=*/false, |
| std::move(loaded_model)); |
| } |
| |
| void PredictionManager::UpdatePredictionModels( |
| const google::protobuf::RepeatedPtrField<proto::PredictionModel>& |
| prediction_models) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| // Check whether the model store from the original profile still exists. |
| if (!features::IsInstallWideModelStoreEnabled() && !model_and_features_store_) |
| return; |
| |
| std::unique_ptr<StoreUpdateData> prediction_model_update_data = |
| StoreUpdateData::CreatePredictionModelStoreUpdateData( |
| clock_->Now() + features::StoredModelsValidDuration()); |
| bool has_models_to_update = false; |
| for (const auto& model : prediction_models) { |
| if (!model.has_model()) { |
| // We already have this updated model, so don't update in store. |
| continue; |
| } |
| DCHECK(!model.model().download_url().empty()); |
| UpdateModelMetadata(model); |
| auto optimization_target = model.model_info().optimization_target(); |
| if (ShouldDownloadNewModel(model)) { |
| StartModelDownload(optimization_target, |
| GURL(model.model().download_url())); |
| // Skip over models that have a download URL since they will be updated |
| // once the download has completed successfully. |
| continue; |
| } |
| |
| RecordModelUpdateVersion(model.model_info()); |
| if (features::IsInstallWideModelStoreEnabled()) { |
| DCHECK(prediction_model_store_->HasModel(optimization_target, |
| model_cache_key_)); |
| // Load the model from the store to see whether it is valid or not. |
| prediction_model_store_->LoadModel( |
| optimization_target, model_cache_key_, |
| base::BindOnce( |
| &PredictionManager::MaybeDownloadOrUpdatePredictionModel, |
| ui_weak_ptr_factory_.GetWeakPtr(), optimization_target, model)); |
| } else { |
| // Storing the model regardless of whether the model is valid or not. |
| // Model will be removed from store if it fails to load. |
| has_models_to_update = true; |
| prediction_model_update_data->CopyPredictionModelIntoUpdateData(model); |
| OnLoadPredictionModel(optimization_target, |
| /*record_availability_metrics=*/false, |
| std::make_unique<proto::PredictionModel>(model)); |
| } |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Model Download Not Required for target: " << optimization_target |
| << "\nNew Version: " |
| << base::NumberToString(model.model_info().version()); |
| } |
| } |
| |
| if (has_models_to_update && model_and_features_store_) { |
| model_and_features_store_->UpdatePredictionModels( |
| std::move(prediction_model_update_data), |
| base::BindOnce(&PredictionManager::OnPredictionModelsStored, |
| ui_weak_ptr_factory_.GetWeakPtr())); |
| } |
| } |
| |
| void PredictionManager::OnModelReady(const base::FilePath& base_model_dir, |
| const proto::PredictionModel& model) { |
| if (switches::IsModelOverridePresent()) |
| return; |
| |
| if (!features::IsInstallWideModelStoreEnabled() && !model_and_features_store_) |
| return; |
| |
| DCHECK(model.model_info().has_version() && |
| model.model_info().has_optimization_target()); |
| |
| RecordModelUpdateVersion(model.model_info()); |
| RecordLifecycleState(model.model_info().optimization_target(), |
| ModelDeliveryEvent::kModelDownloaded); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "Model Files Downloaded target: " |
| << model.model_info().optimization_target() |
| << "\nNew Version: " + |
| base::NumberToString(model.model_info().version()); |
| } |
| |
| // Store the received model in the store. |
| if (features::IsInstallWideModelStoreEnabled()) { |
| prediction_model_store_->UpdateModel( |
| model.model_info().optimization_target(), model_cache_key_, |
| model.model_info(), base_model_dir, |
| base::BindOnce(&PredictionManager::OnPredictionModelsStored, |
| ui_weak_ptr_factory_.GetWeakPtr())); |
| } else { |
| std::unique_ptr<StoreUpdateData> prediction_model_update_data = |
| StoreUpdateData::CreatePredictionModelStoreUpdateData( |
| clock_->Now() + features::StoredModelsValidDuration()); |
| prediction_model_update_data->CopyPredictionModelIntoUpdateData(model); |
| model_and_features_store_->UpdatePredictionModels( |
| std::move(prediction_model_update_data), |
| base::BindOnce(&PredictionManager::OnPredictionModelsStored, |
| ui_weak_ptr_factory_.GetWeakPtr())); |
| } |
| |
| if (registered_optimization_targets_and_metadata_.contains( |
| model.model_info().optimization_target())) { |
| OnLoadPredictionModel(model.model_info().optimization_target(), |
| /*record_availability_metrics=*/false, |
| std::make_unique<proto::PredictionModel>(model)); |
| } |
| } |
| |
| void PredictionManager::OnModelDownloadStarted( |
| proto::OptimizationTarget optimization_target) { |
| RecordLifecycleState(optimization_target, |
| ModelDeliveryEvent::kModelDownloadStarted); |
| } |
| |
| void PredictionManager::OnModelDownloadFailed( |
| proto::OptimizationTarget optimization_target) { |
| RecordLifecycleState(optimization_target, |
| ModelDeliveryEvent::kModelDownloadFailure); |
| } |
| |
| std::vector<optimization_guide_internals::mojom::DownloadedModelInfoPtr> |
| PredictionManager::GetDownloadedModelsInfoForWebUI() const { |
| std::vector<optimization_guide_internals::mojom::DownloadedModelInfoPtr> |
| downloaded_models_info; |
| downloaded_models_info.reserve(optimization_target_model_info_map_.size()); |
| for (const auto& it : optimization_target_model_info_map_) { |
| const std::string& optimization_target_name = |
| optimization_guide::proto::OptimizationTarget_Name(it.first); |
| const optimization_guide::ModelInfo* const model_info = it.second.get(); |
| auto downloaded_model_info_ptr = |
| optimization_guide_internals::mojom::DownloadedModelInfo::New( |
| optimization_target_name, model_info->GetVersion(), |
| model_info->GetModelFilePath().AsUTF8Unsafe()); |
| downloaded_models_info.push_back(std::move(downloaded_model_info_ptr)); |
| } |
| return downloaded_models_info; |
| } |
| |
| void PredictionManager::NotifyObserversOfNewModel( |
| proto::OptimizationTarget optimization_target, |
| const ModelInfo& model_info) { |
| auto observers_it = |
| registered_observers_for_optimization_targets_.find(optimization_target); |
| if (observers_it == registered_observers_for_optimization_targets_.end()) |
| return; |
| RecordLifecycleState(optimization_target, |
| ModelDeliveryEvent::kModelDelivered); |
| for (auto& observer : observers_it->second) { |
| observer.OnModelUpdated(optimization_target, model_info); |
| if (optimization_guide_logger_->ShouldEnableDebugLogs()) { |
| OPTIMIZATION_GUIDE_LOGGER( |
| optimization_guide_common::mojom::LogSource::MODEL_MANAGEMENT, |
| optimization_guide_logger_) |
| << "OnModelFileUpdated for target: " << optimization_target |
| << "\nFile path: " << model_info.GetModelFilePath().AsUTF8Unsafe() |
| << "\nHas metadata: " |
| << (model_info.GetModelMetadata() ? "True" : "False"); |
| } |
| } |
| } |
| |
| void PredictionManager::OnPredictionModelsStored() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| LOCAL_HISTOGRAM_BOOLEAN( |
| "OptimizationGuide.PredictionManager.PredictionModelsStored", true); |
| } |
| |
| void PredictionManager::MaybeInitializeModelDownloads( |
| download::BackgroundDownloadService* background_download_service) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| // Create the download manager here if we are allowed to. |
| if (features::IsModelDownloadingEnabled() && !off_the_record_ && |
| !prediction_model_download_manager_) { |
| prediction_model_download_manager_ = |
| std::make_unique<PredictionModelDownloadManager>( |
| background_download_service, |
| base::BindRepeating( |
| &PredictionManager::GetBaseModelDirForDownload, |
| // base::Unretained is safe here because the |
| // PredictionModelDownloadManager is owned by `this` |
| base::Unretained(this)), |
| base::ThreadPool::CreateSequencedTaskRunner( |
| {base::MayBlock(), base::TaskPriority::BEST_EFFORT, |
| base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN})); |
| prediction_model_download_manager_->AddObserver(this); |
| } |
| |
| // Only load models if there are optimization targets registered. |
| if (!registered_optimization_targets_and_metadata_.empty()) |
| MaybeScheduleFirstModelFetch(); |
| } |
| |
| void PredictionManager::OnStoreInitialized( |
| BackgroundDownloadServiceProvider background_download_service_provider) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| store_is_ready_ = true; |
| init_time_ = base::TimeTicks::Now(); |
| LOCAL_HISTOGRAM_BOOLEAN( |
| "OptimizationGuide.PredictionManager.StoreInitialized", true); |
| |
| // Purge any inactive models from the store. |
| if (model_and_features_store_) |
| model_and_features_store_->PurgeInactiveModels(); |
| |
| MaybeInitializeModelDownloads( |
| background_download_service_provider && !off_the_record_ |
| ? std::move(background_download_service_provider).Run() |
| : nullptr); |
| |
| // Only load models if there are optimization targets registered. |
| if (registered_optimization_targets_and_metadata_.empty()) |
| return; |
| |
| // The store is ready so start loading models for the registered optimization |
| // targets. |
| LoadPredictionModels(GetRegisteredOptimizationTargets()); |
| } |
| |
| void PredictionManager::OnPredictionModelOverrideLoaded( |
| proto::OptimizationTarget optimization_target, |
| std::unique_ptr<proto::PredictionModel> prediction_model) { |
| OnLoadPredictionModel(optimization_target, |
| /*record_availability_metrics=*/false, |
| std::move(prediction_model)); |
| RecordModelAvailableAtRegistration(optimization_target, |
| prediction_model != nullptr); |
| } |
| |
| void PredictionManager::LoadPredictionModels( |
| const base::flat_set<proto::OptimizationTarget>& optimization_targets) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| if (switches::IsModelOverridePresent()) { |
| for (proto::OptimizationTarget optimization_target : optimization_targets) { |
| base::FilePath base_model_dir = |
| GetBaseModelDirForDownload(optimization_target); |
| BuildPredictionModelFromCommandLineForOptimizationTarget( |
| optimization_target, base_model_dir, |
| base::BindOnce(&PredictionManager::OnPredictionModelOverrideLoaded, |
| ui_weak_ptr_factory_.GetWeakPtr(), |
| optimization_target)); |
| } |
| return; |
| } |
| |
| if (features::IsInstallWideModelStoreEnabled()) { |
| for (const auto optimization_target : optimization_targets) { |
| if (!prediction_model_store_->HasModel(optimization_target, |
| model_cache_key_)) { |
| RecordModelAvailableAtRegistration(optimization_target, false); |
| continue; |
| } |
| prediction_model_store_->LoadModel( |
| optimization_target, model_cache_key_, |
| base::BindOnce(&PredictionManager::OnLoadPredictionModel, |
| ui_weak_ptr_factory_.GetWeakPtr(), optimization_target, |
| /*record_availability_metrics=*/true)); |
| } |
| return; |
| } |
| |
| DCHECK(!features::IsInstallWideModelStoreEnabled()); |
| if (!model_and_features_store_) |
| return; |
| |
| OptimizationGuideStore::EntryKey model_entry_key; |
| for (const auto& optimization_target : optimization_targets) { |
| // The prediction model for this optimization target has already been |
| // loaded. |
| bool model_stored_locally = |
| model_and_features_store_->FindPredictionModelEntryKey( |
| optimization_target, &model_entry_key); |
| if (!model_stored_locally) { |
| RecordModelAvailableAtRegistration(optimization_target, |
| model_stored_locally); |
| continue; |
| } |
| model_and_features_store_->LoadPredictionModel( |
| model_entry_key, |
| base::BindOnce(&PredictionManager::OnLoadPredictionModel, |
| ui_weak_ptr_factory_.GetWeakPtr(), optimization_target, |
| /*record_availability_metrics=*/true)); |
| } |
| } |
| |
| void PredictionManager::OnLoadPredictionModel( |
| proto::OptimizationTarget optimization_target, |
| bool record_availability_metrics, |
| std::unique_ptr<proto::PredictionModel> model) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (!model) { |
| if (record_availability_metrics) { |
| RecordModelAvailableAtRegistration(optimization_target, false); |
| } |
| return; |
| } |
| bool success = ProcessAndStoreLoadedModel(*model); |
| DCHECK_EQ(optimization_target, model->model_info().optimization_target()); |
| if (record_availability_metrics) |
| RecordModelAvailableAtRegistration(optimization_target, success); |
| OnProcessLoadedModel(*model, success); |
| } |
| |
| void PredictionManager::OnProcessLoadedModel( |
| const proto::PredictionModel& model, |
| bool success) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| if (success) { |
| base::UmaHistogramSparse("OptimizationGuide.PredictionModelLoadedVersion." + |
| GetStringNameForOptimizationTarget( |
| model.model_info().optimization_target()), |
| model.model_info().version()); |
| return; |
| } |
| |
| // Remove model from store if it exists. |
| OptimizationGuideStore::EntryKey model_entry_key; |
| if (model_and_features_store_ && |
| model_and_features_store_->FindPredictionModelEntryKey( |
| model.model_info().optimization_target(), &model_entry_key)) { |
| LOCAL_HISTOGRAM_BOOLEAN("OptimizationGuide.PredictionModelRemoved." + |
| GetStringNameForOptimizationTarget( |
| model.model_info().optimization_target()), |
| true); |
| model_and_features_store_->RemovePredictionModelFromEntryKey( |
| model_entry_key); |
| } |
| } |
| |
| bool PredictionManager::ProcessAndStoreLoadedModel( |
| const proto::PredictionModel& model) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (!model.model_info().has_optimization_target()) |
| return false; |
| if (!model.model_info().has_version()) |
| return false; |
| if (!model.has_model()) |
| return false; |
| if (!registered_optimization_targets_and_metadata_.contains( |
| model.model_info().optimization_target())) { |
| return false; |
| } |
| |
| ScopedPredictionModelConstructionAndValidationRecorder |
| prediction_model_recorder(model.model_info().optimization_target()); |
| std::unique_ptr<ModelInfo> model_info = ModelInfo::Create(model); |
| if (!model_info) { |
| prediction_model_recorder.set_is_valid(false); |
| return false; |
| } |
| |
| proto::OptimizationTarget optimization_target = |
| model.model_info().optimization_target(); |
| |
| // See if we should update the loaded model. |
| if (!ShouldUpdateStoredModelForTarget(optimization_target, |
| model.model_info().version())) { |
| return true; |
| } |
| |
| // Update prediction model file if that is what we have loaded. |
| if (model_info) { |
| StoreLoadedModelInfo(optimization_target, std::move(model_info)); |
| } |
| |
| return true; |
| } |
| |
| bool PredictionManager::ShouldUpdateStoredModelForTarget( |
| proto::OptimizationTarget optimization_target, |
| int64_t new_version) const { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| |
| auto model_meta_it = |
| optimization_target_model_info_map_.find(optimization_target); |
| if (model_meta_it != optimization_target_model_info_map_.end()) |
| return model_meta_it->second->GetVersion() != new_version; |
| |
| return true; |
| } |
| |
| void PredictionManager::StoreLoadedModelInfo( |
| proto::OptimizationTarget optimization_target, |
| std::unique_ptr<ModelInfo> model_info) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| DCHECK(model_info); |
| |
| // Notify observers of new model file path. |
| base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask( |
| FROM_HERE, base::BindOnce(&PredictionManager::NotifyObserversOfNewModel, |
| ui_weak_ptr_factory_.GetWeakPtr(), |
| optimization_target, *model_info)); |
| |
| optimization_target_model_info_map_.insert_or_assign(optimization_target, |
| std::move(model_info)); |
| } |
| |
| void PredictionManager::MaybeScheduleFirstModelFetch() { |
| if (!ShouldFetchModels(off_the_record_, |
| component_updates_enabled_provider_.Run())) { |
| return; |
| } |
| |
| // Add a slight delay to allow the rest of the browser startup process to |
| // finish up. |
| fetch_timer_.Start(FROM_HERE, features::PredictionModelFetchStartupDelay(), |
| base::BindOnce(&PredictionManager::FetchModels, |
| base::Unretained(this), true)); |
| } |
| |
| base::Time PredictionManager::GetLastFetchAttemptTime() const { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| return base::Time::FromDeltaSinceWindowsEpoch(base::Microseconds( |
| pref_service_->GetInt64(prefs::kModelAndFeaturesLastFetchAttempt))); |
| } |
| |
| base::Time PredictionManager::GetLastFetchSuccessTime() const { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| return base::Time::FromDeltaSinceWindowsEpoch(base::Microseconds( |
| pref_service_->GetInt64(prefs::kModelLastFetchSuccess))); |
| } |
| |
| void PredictionManager::ScheduleModelsFetch() { |
| DCHECK(!fetch_timer_.IsRunning()); |
| DCHECK(store_is_ready_); |
| const base::TimeDelta time_until_update_time = |
| GetLastFetchSuccessTime() + features::PredictionModelFetchInterval() - |
| clock_->Now(); |
| const base::TimeDelta time_until_retry = |
| GetLastFetchAttemptTime() + features::PredictionModelFetchRetryDelay() - |
| clock_->Now(); |
| base::TimeDelta fetcher_delay = |
| std::max(time_until_update_time, time_until_retry); |
| if (fetcher_delay <= base::TimeDelta()) { |
| fetch_timer_.Start(FROM_HERE, RandomFetchDelay(), |
| base::BindOnce(&PredictionManager::FetchModels, |
| base::Unretained(this), false)); |
| return; |
| } |
| fetch_timer_.Start(FROM_HERE, fetcher_delay, this, |
| &PredictionManager::ScheduleModelsFetch); |
| } |
| |
| void PredictionManager::SetLastModelFetchAttemptTime( |
| base::Time last_attempt_time) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| pref_service_->SetInt64( |
| prefs::kModelAndFeaturesLastFetchAttempt, |
| last_attempt_time.ToDeltaSinceWindowsEpoch().InMicroseconds()); |
| } |
| |
| void PredictionManager::SetLastModelFetchSuccessTime( |
| base::Time last_success_time) { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| pref_service_->SetInt64( |
| prefs::kModelLastFetchSuccess, |
| last_success_time.ToDeltaSinceWindowsEpoch().InMicroseconds()); |
| } |
| |
| void PredictionManager::SetClockForTesting(const base::Clock* clock) { |
| clock_ = clock; |
| } |
| |
| base::FilePath PredictionManager::GetBaseModelDirForDownload( |
| proto::OptimizationTarget optimization_target) { |
| return features::IsInstallWideModelStoreEnabled() |
| ? prediction_model_store_->GetBaseModelDirForModelCacheKey( |
| optimization_target, model_cache_key_) |
| : models_dir_path_.AppendASCII( |
| base::GUID::GenerateRandomV4().AsLowercaseString()); |
| } |
| |
| void PredictionManager::OverrideTargetModelForTesting( |
| proto::OptimizationTarget optimization_target, |
| std::unique_ptr<ModelInfo> model_info) { |
| if (!model_info) { |
| return; |
| } |
| |
| ModelInfo model_info_copy = *model_info; |
| |
| optimization_target_model_info_map_.insert_or_assign(optimization_target, |
| std::move(model_info)); |
| |
| NotifyObserversOfNewModel(optimization_target, model_info_copy); |
| } |
| |
| } // namespace optimization_guide |
