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// Copyright 2018 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/download/public/common/url_download_handler_factory.h"
#include "base/no_destructor.h"
#include "base/synchronization/lock.h"
#include "components/download/public/common/download_item.h"
#include "components/download/public/common/download_utils.h"
#include "components/download/public/common/resource_downloader.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
namespace download {
namespace {
// Factory for creating URLDownloadHandler used by network service.
class DefaultUrlDownloadHandlerFactory : public UrlDownloadHandlerFactory {
public:
DefaultUrlDownloadHandlerFactory() = default;
~DefaultUrlDownloadHandlerFactory() override = default;
protected:
UrlDownloadHandler::UniqueUrlDownloadHandlerPtr CreateUrlDownloadHandler(
std::unique_ptr<download::DownloadUrlParameters> params,
base::WeakPtr<download::UrlDownloadHandler::Delegate> delegate,
scoped_refptr<network::SharedURLLoaderFactory> shared_url_loader_factory,
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) override {
std::unique_ptr<network::ResourceRequest> request =
CreateResourceRequest(params.get());
return UrlDownloadHandler::UniqueUrlDownloadHandlerPtr(
download::ResourceDownloader::BeginDownload(
delegate, std::move(params), std::move(request),
std::move(shared_url_loader_factory), GURL(), GURL(), GURL(),
download::DownloadItem::kInvalidId, true, task_runner)
.release(),
base::OnTaskRunnerDeleter(base::ThreadTaskRunnerHandle::Get()));
}
private:
DISALLOW_COPY_AND_ASSIGN(DefaultUrlDownloadHandlerFactory);
};
UrlDownloadHandlerFactory* g_url_download_handler_factory;
// Lock to protect |g_url_download_handler_factory|
base::Lock& GetURLDownloadHandlerFactoryLock() {
static base::NoDestructor<base::Lock> instance;
return *instance;
}
} // namespace
// static
UrlDownloadHandler::UniqueUrlDownloadHandlerPtr
UrlDownloadHandlerFactory::Create(
std::unique_ptr<download::DownloadUrlParameters> params,
base::WeakPtr<download::UrlDownloadHandler::Delegate> delegate,
scoped_refptr<network::SharedURLLoaderFactory> shared_url_loader_factory,
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
base::AutoLock auto_lock(GetURLDownloadHandlerFactoryLock());
if (!g_url_download_handler_factory)
g_url_download_handler_factory = new DefaultUrlDownloadHandlerFactory();
return g_url_download_handler_factory->CreateUrlDownloadHandler(
std::move(params), delegate, std::move(shared_url_loader_factory),
task_runner);
}
// static
void UrlDownloadHandlerFactory::Install(UrlDownloadHandlerFactory* factory) {
base::AutoLock auto_lock(GetURLDownloadHandlerFactoryLock());
if (factory == g_url_download_handler_factory)
return;
delete g_url_download_handler_factory;
g_url_download_handler_factory = factory;
}
UrlDownloadHandlerFactory::UrlDownloadHandlerFactory() = default;
UrlDownloadHandlerFactory::~UrlDownloadHandlerFactory() = default;
} // namespace download
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