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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 "content/common/single_request_url_loader_factory.h"
#include <memory>
#include <utility>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/sequenced_task_runner.h"
#include "base/threading/sequenced_task_runner_handle.h"
#include "services/network/public/mojom/url_loader.mojom.h"
namespace content {
class SingleRequestURLLoaderFactory::HandlerState
: public base::RefCountedThreadSafe<
SingleRequestURLLoaderFactory::HandlerState> {
public:
explicit HandlerState(RequestHandler handler)
: handler_(std::move(handler)),
handler_task_runner_(base::SequencedTaskRunnerHandle::Get()) {}
void HandleRequest(network::mojom::URLLoaderRequest loader,
network::mojom::URLLoaderClientPtr client) {
if (!handler_task_runner_->RunsTasksInCurrentSequence()) {
handler_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&HandlerState::HandleRequest, this,
std::move(loader), std::move(client)));
return;
}
DCHECK(handler_);
std::move(handler_).Run(std::move(loader), std::move(client));
}
private:
friend class base::RefCountedThreadSafe<HandlerState>;
~HandlerState() {
if (handler_) {
handler_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&DropHandlerOnHandlerSequence, std::move(handler_)));
}
}
static void DropHandlerOnHandlerSequence(RequestHandler handler) {}
RequestHandler handler_;
const scoped_refptr<base::SequencedTaskRunner> handler_task_runner_;
DISALLOW_COPY_AND_ASSIGN(HandlerState);
};
class SingleRequestURLLoaderFactory::FactoryInfo
: public network::SharedURLLoaderFactoryInfo {
public:
explicit FactoryInfo(scoped_refptr<HandlerState> state)
: state_(std::move(state)) {}
~FactoryInfo() override = default;
// SharedURLLoaderFactoryInfo:
scoped_refptr<network::SharedURLLoaderFactory> CreateFactory() override {
return new SingleRequestURLLoaderFactory(std::move(state_));
}
private:
scoped_refptr<HandlerState> state_;
DISALLOW_COPY_AND_ASSIGN(FactoryInfo);
};
SingleRequestURLLoaderFactory::SingleRequestURLLoaderFactory(
RequestHandler handler)
: state_(base::MakeRefCounted<HandlerState>(std::move(handler))) {}
void SingleRequestURLLoaderFactory::CreateLoaderAndStart(
network::mojom::URLLoaderRequest loader,
int32_t routing_id,
int32_t request_id,
uint32_t options,
const network::ResourceRequest& request,
network::mojom::URLLoaderClientPtr client,
const net::MutableNetworkTrafficAnnotationTag& traffic_annotation) {
state_->HandleRequest(std::move(loader), std::move(client));
}
std::unique_ptr<network::SharedURLLoaderFactoryInfo>
SingleRequestURLLoaderFactory::Clone() {
return std::make_unique<FactoryInfo>(state_);
}
SingleRequestURLLoaderFactory::SingleRequestURLLoaderFactory(
scoped_refptr<HandlerState> state)
: state_(std::move(state)) {}
SingleRequestURLLoaderFactory::~SingleRequestURLLoaderFactory() = default;
} // namespace content
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