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// 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.
#ifndef CHROME_RENDERER_ASH_MERGE_SESSION_LOADER_THROTTLE_H_
#define CHROME_RENDERER_ASH_MERGE_SESSION_LOADER_THROTTLE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "chrome/renderer/chrome_render_thread_observer.h"
#include "chrome/renderer/chromeos_delayed_callback_group.h"
#include "third_party/blink/public/common/loader/url_loader_throttle.h"
// This is used to throttle XHR resource requests on Chrome OS while the
// merge session is running (or a timeout).
class AshMergeSessionLoaderThrottle final : public blink::URLLoaderThrottle {
public:
static base::TimeDelta GetMergeSessionTimeout();
explicit AshMergeSessionLoaderThrottle(
scoped_refptr<ChromeRenderThreadObserver::ChromeOSListener>
chromeos_listener);
AshMergeSessionLoaderThrottle(const AshMergeSessionLoaderThrottle&) = delete;
AshMergeSessionLoaderThrottle& operator=(
const AshMergeSessionLoaderThrottle&) = delete;
~AshMergeSessionLoaderThrottle() override;
// blink::URLLoaderThrottle:
void WillStartRequest(network::ResourceRequest* request,
bool* defer) override;
void WillRedirectRequest(
net::RedirectInfo* redirect_info,
const network::mojom::URLResponseHead& response_head,
bool* defer,
std::vector<std::string>* to_be_removed_headers,
net::HttpRequestHeaders* modified_headers,
net::HttpRequestHeaders* modified_cors_exempt_headers) override;
private:
bool MaybeDeferForMergeSession(
const GURL& url,
DelayedCallbackGroup::Callback resume_callback);
void DetachFromCurrentSequence() override;
void ResumeLoader(DelayedCallbackGroup::RunReason run_reason);
bool is_xhr_ = false;
scoped_refptr<ChromeRenderThreadObserver::ChromeOSListener>
chromeos_listener_;
base::WeakPtrFactory<AshMergeSessionLoaderThrottle> weak_ptr_factory_{this};
};
#endif // CHROME_RENDERER_ASH_MERGE_SESSION_LOADER_THROTTLE_H_
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