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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/download/background_download_service_factory.h"
#include <memory>
#include <utility>
#include "base/feature_list.h"
#include "base/files/file_path.h"
#include "base/memory/raw_ptr.h"
#include "base/no_destructor.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/single_thread_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "build/build_config.h"
#include "chrome/browser/download/deferred_client_wrapper.h"
#include "chrome/browser/download/download_manager_utils.h"
#include "chrome/browser/download/simple_download_manager_coordinator_factory.h"
#include "chrome/browser/optimization_guide/prediction/prediction_model_download_client.h"
#include "chrome/browser/profiles/incognito_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_key.h"
#include "chrome/browser/transition_manager/full_browser_transition_manager.h"
#include "chrome/common/chrome_constants.h"
#include "components/background_fetch/download_client.h"
#include "components/download/content/factory/download_service_factory_helper.h"
#include "components/download/content/factory/navigation_monitor_factory.h"
#include "components/download/public/background_service/background_download_service.h"
#include "components/download/public/background_service/basic_task_scheduler.h"
#include "components/download/public/background_service/blob_context_getter_factory.h"
#include "components/download/public/background_service/clients.h"
#include "components/download/public/background_service/features.h"
#include "components/download/public/background_service/url_loader_factory_getter.h"
#include "components/download/public/common/simple_download_manager_coordinator.h"
#include "components/keyed_service/core/simple_dependency_manager.h"
#include "components/leveldb_proto/public/proto_database_provider.h"
#include "components/optimization_guide/core/optimization_guide_features.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/network_service_instance.h"
#include "content/public/browser/storage_partition.h"
#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/download/android/service/download_task_scheduler.h"
#endif
#if BUILDFLAG(IS_CHROMEOS)
#include "chrome/browser/ash/plugin_vm/plugin_vm_image_download_client.h"
#endif
namespace {
std::unique_ptr<download::Client> CreateBackgroundFetchDownloadClient(
Profile* profile) {
return std::make_unique<background_fetch::DownloadClient>(profile);
}
#if BUILDFLAG(IS_CHROMEOS)
std::unique_ptr<download::Client> CreatePluginVmImageDownloadClient(
Profile* profile) {
return std::make_unique<plugin_vm::PluginVmImageDownloadClient>(profile);
}
#endif // BUILDFLAG(IS_CHROMEOS)
std::unique_ptr<download::Client>
CreateOptimizationGuidePredictionModelDownloadClient(Profile* profile) {
return std::make_unique<optimization_guide::PredictionModelDownloadClient>(
profile);
}
// Called on profile created to retrieve the BlobStorageContextGetter.
void DownloadOnProfileCreated(download::BlobContextGetterCallback callback,
Profile* profile) {
auto blob_context_getter = profile->GetBlobStorageContext();
DCHECK(callback);
std::move(callback).Run(blob_context_getter);
}
// Provides BlobContextGetter from Chrome asynchronously.
class DownloadBlobContextGetterFactory
: public download::BlobContextGetterFactory {
public:
explicit DownloadBlobContextGetterFactory(SimpleFactoryKey* key) : key_(key) {
DCHECK(key_);
}
DownloadBlobContextGetterFactory(const DownloadBlobContextGetterFactory&) =
delete;
DownloadBlobContextGetterFactory& operator=(
const DownloadBlobContextGetterFactory&) = delete;
~DownloadBlobContextGetterFactory() override = default;
private:
// download::BlobContextGetterFactory implementation.
void RetrieveBlobContextGetter(
download::BlobContextGetterCallback callback) override {
FullBrowserTransitionManager::Get()->RegisterCallbackOnProfileCreation(
key_, base::BindOnce(&DownloadOnProfileCreated, std::move(callback)));
}
raw_ptr<SimpleFactoryKey> key_;
};
void OnProfileCreated(download::URLLoaderFactoryGetterCallback callback,
Profile* profile) {
DCHECK(callback);
std::move(callback).Run(profile->GetURLLoaderFactory());
}
class URLLoaderFactoryGetter : public download::URLLoaderFactoryGetter {
public:
explicit URLLoaderFactoryGetter(SimpleFactoryKey* key) : key_(key) {
DCHECK(key_);
}
URLLoaderFactoryGetter(const URLLoaderFactoryGetter&) = delete;
URLLoaderFactoryGetter& operator=(const URLLoaderFactoryGetter&) = delete;
~URLLoaderFactoryGetter() override = default;
private:
void RetrieveURLLoaderFactory(
download::URLLoaderFactoryGetterCallback callback) override {
FullBrowserTransitionManager::Get()->RegisterCallbackOnProfileCreation(
key_, base::BindOnce(&OnProfileCreated, std::move(callback)));
}
raw_ptr<SimpleFactoryKey> key_;
};
} // namespace
// static
BackgroundDownloadServiceFactory*
BackgroundDownloadServiceFactory::GetInstance() {
static base::NoDestructor<BackgroundDownloadServiceFactory> instance;
return instance.get();
}
// static
download::BackgroundDownloadService*
BackgroundDownloadServiceFactory::GetForKey(SimpleFactoryKey* key) {
return static_cast<download::BackgroundDownloadService*>(
GetInstance()->GetServiceForKey(key, true));
}
BackgroundDownloadServiceFactory::BackgroundDownloadServiceFactory()
: SimpleKeyedServiceFactory("download::BackgroundDownloadService",
SimpleDependencyManager::GetInstance()) {
DependsOn(SimpleDownloadManagerCoordinatorFactory::GetInstance());
DependsOn(download::NavigationMonitorFactory::GetInstance());
}
BackgroundDownloadServiceFactory::~BackgroundDownloadServiceFactory() = default;
std::unique_ptr<KeyedService>
BackgroundDownloadServiceFactory::BuildServiceInstanceFor(
SimpleFactoryKey* key) const {
auto clients = std::make_unique<download::DownloadClientMap>();
ProfileKey* profile_key = ProfileKey::FromSimpleFactoryKey(key);
clients->insert(std::make_pair(
download::DownloadClient::BACKGROUND_FETCH,
std::make_unique<download::DeferredClientWrapper>(
base::BindOnce(&CreateBackgroundFetchDownloadClient), key)));
#if BUILDFLAG(IS_CHROMEOS)
if (!key->IsOffTheRecord()) {
clients->insert(std::make_pair(
download::DownloadClient::PLUGIN_VM_IMAGE,
std::make_unique<download::DeferredClientWrapper>(
base::BindOnce(&CreatePluginVmImageDownloadClient), key)));
}
#endif // BUILDFLAG(IS_CHROMEOS)
if (optimization_guide::features::IsModelDownloadingEnabled() &&
!key->IsOffTheRecord()) {
clients->insert(std::make_pair(
download::DownloadClient::OPTIMIZATION_GUIDE_PREDICTION_MODELS,
std::make_unique<download::DeferredClientWrapper>(
base::BindOnce(
&CreateOptimizationGuidePredictionModelDownloadClient),
key)));
}
// Build in memory download service for incognito profile.
if (key->IsOffTheRecord()) {
auto blob_context_getter_factory =
std::make_unique<DownloadBlobContextGetterFactory>(key);
scoped_refptr<base::SingleThreadTaskRunner> io_task_runner =
content::GetIOThreadTaskRunner({});
return download::BuildInMemoryDownloadService(
key, std::move(clients), content::GetNetworkConnectionTracker(),
base::FilePath(), std::move(blob_context_getter_factory),
io_task_runner, std::make_unique<::URLLoaderFactoryGetter>(key));
} else {
// Build download service for normal profile.
base::FilePath storage_dir;
if (!key->IsOffTheRecord() && !key->GetPath().empty()) {
storage_dir =
key->GetPath().Append(chrome::kDownloadServiceStorageDirname);
}
scoped_refptr<base::SequencedTaskRunner> background_task_runner =
base::ThreadPool::CreateSequencedTaskRunner(
{base::MayBlock(), base::TaskPriority::BEST_EFFORT});
std::unique_ptr<download::TaskScheduler> task_scheduler;
#if BUILDFLAG(IS_ANDROID)
task_scheduler =
std::make_unique<download::android::DownloadTaskScheduler>();
#else
task_scheduler =
std::make_unique<download::BasicTaskScheduler>(base::BindRepeating(
[](SimpleFactoryKey* key) {
return BackgroundDownloadServiceFactory::GetForKey(key);
},
key));
#endif
// Some tests doesn't initialize DownloadManager when profile is created,
// and cause the download service to fail. Call
// InitializeSimpleDownloadManager() to initialize the DownloadManager
// whenever profile becomes available.
DownloadManagerUtils::InitializeSimpleDownloadManager(profile_key);
leveldb_proto::ProtoDatabaseProvider* proto_db_provider =
profile_key->GetProtoDatabaseProvider();
return download::BuildDownloadService(
key, std::move(clients), content::GetNetworkConnectionTracker(),
storage_dir, SimpleDownloadManagerCoordinatorFactory::GetForKey(key),
proto_db_provider, background_task_runner, std::move(task_scheduler));
}
}
SimpleFactoryKey* BackgroundDownloadServiceFactory::GetKeyToUse(
SimpleFactoryKey* key) const {
return key;
}
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