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// Copyright 2014 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.
#ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_FETCH_DISPATCHER_H_
#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_FETCH_DISPATCHER_H_
#include <memory>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/optional.h"
#include "base/time/time.h"
#include "content/browser/service_worker/service_worker_metrics.h"
#include "content/common/content_export.h"
#include "content/common/service_worker/service_worker_event_dispatcher.mojom.h"
#include "content/common/service_worker/service_worker_status_code.h"
#include "content/common/service_worker/service_worker_types.h"
#include "content/common/url_loader.mojom.h"
#include "content/common/url_loader_factory.mojom.h"
#include "content/public/common/resource_type.h"
#include "net/log/net_log_with_source.h"
namespace net {
class URLRequest;
} // namespace net
namespace content {
class ServiceWorkerVersion;
// A helper class to dispatch fetch event to a service worker.
class CONTENT_EXPORT ServiceWorkerFetchDispatcher {
public:
using FetchCallback =
base::Callback<void(ServiceWorkerStatusCode,
ServiceWorkerFetchEventResult,
const ServiceWorkerResponse&,
const scoped_refptr<ServiceWorkerVersion>&)>;
ServiceWorkerFetchDispatcher(
std::unique_ptr<ServiceWorkerFetchRequest> request,
ServiceWorkerVersion* version,
ResourceType resource_type,
const base::Optional<base::TimeDelta>& timeout,
const net::NetLogWithSource& net_log,
const base::Closure& prepare_callback,
const FetchCallback& fetch_callback);
~ServiceWorkerFetchDispatcher();
// If appropriate, starts the navigation preload request and creates
// |preload_handle_|. Returns true if it started navigation preload.
// |on_response| is invoked in OnReceiveResponse().
bool MaybeStartNavigationPreload(net::URLRequest* original_request,
base::OnceClosure on_response);
// Dispatches a fetch event to the |version| given in ctor, and fires
// |fetch_callback| (also given in ctor) when finishes. It runs
// |prepare_callback| as an intermediate step once the version is activated
// and running.
void Run();
private:
class ResponseCallback;
class URLLoaderAssets;
void DidWaitForActivation();
void StartWorker();
void DidStartWorker();
void DidFailToStartWorker(ServiceWorkerStatusCode status);
void DispatchFetchEvent();
void DidFailToDispatch(ServiceWorkerStatusCode status);
void DidFail(ServiceWorkerStatusCode status);
void DidFinish(int request_id,
ServiceWorkerFetchEventResult fetch_result,
const ServiceWorkerResponse& response);
void Complete(ServiceWorkerStatusCode status,
ServiceWorkerFetchEventResult fetch_result,
const ServiceWorkerResponse& response);
static void OnFetchEventFinished(
ServiceWorkerVersion* version,
int event_finish_id,
scoped_refptr<URLLoaderAssets> url_loader_assets,
ServiceWorkerStatusCode status,
base::Time dispatch_event_time);
ServiceWorkerMetrics::EventType GetEventType() const;
scoped_refptr<ServiceWorkerVersion> version_;
net::NetLogWithSource net_log_;
base::Closure prepare_callback_;
FetchCallback fetch_callback_;
std::unique_ptr<ServiceWorkerFetchRequest> request_;
ResourceType resource_type_;
base::Optional<base::TimeDelta> timeout_;
bool did_complete_;
scoped_refptr<URLLoaderAssets> url_loader_assets_;
mojom::FetchEventPreloadHandlePtr preload_handle_;
base::WeakPtrFactory<ServiceWorkerFetchDispatcher> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ServiceWorkerFetchDispatcher);
};
} // namespace content
#endif // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_FETCH_DISPATCHER_H_
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