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// Copyright 2013 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_RENDERER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_H_
#define CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_H_
#include <stdint.h>
#include <map>
#include <memory>
#include <set>
#include <vector>
#include "base/containers/id_map.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/strings/string16.h"
#include "content/common/service_worker/service_worker_types.h"
#include "content/public/renderer/worker_thread.h"
#include "mojo/public/cpp/system/message_pipe.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_object.mojom.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_registration.mojom.h"
#include "third_party/blink/public/mojom/service_worker/service_worker_state.mojom.h"
#include "third_party/blink/public/platform/modules/serviceworker/web_service_worker_error.h"
#include "third_party/blink/public/platform/modules/serviceworker/web_service_worker_provider.h"
#include "third_party/blink/public/platform/modules/serviceworker/web_service_worker_registration.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace IPC {
class Message;
}
namespace content {
class WebServiceWorkerImpl;
// This class manages communication with the browser process about
// registration of the service worker, exposed to renderer and worker
// scripts through methods like navigator.registerServiceWorker().
class CONTENT_EXPORT ServiceWorkerDispatcher : public WorkerThread::Observer {
public:
explicit ServiceWorkerDispatcher();
~ServiceWorkerDispatcher() override;
void OnMessageReceived(const IPC::Message& msg);
// Returns the existing service worker or a newly created one with the given
// object info.
scoped_refptr<WebServiceWorkerImpl> GetOrCreateServiceWorker(
blink::mojom::ServiceWorkerObjectInfoPtr info);
// Sets the IO thread task runner. This is only called for a
// ServiceWorkerDispatcher instance on a service worker thread when the thread
// has just started, and the provided IO thread task runner will be used only
// for creating WebServiceWorkerImpl later.
// TODO(leonhsl): Remove this function once we addressed the TODO in
// WebServiceWorkerImpl about the legacy IPC channel-associated interface.
void SetIOThreadTaskRunner(
scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner);
static ServiceWorkerDispatcher* GetOrCreateThreadSpecificInstance();
// Unlike GetOrCreateThreadSpecificInstance() this doesn't create a new
// instance if thread-local instance doesn't exist.
static ServiceWorkerDispatcher* GetThreadSpecificInstance();
private:
using WorkerObjectMap = std::map<int, WebServiceWorkerImpl*>;
friend class ServiceWorkerContextClientTest;
friend class ServiceWorkerDispatcherTest;
friend class WebServiceWorkerImpl;
void AllowReinstantiationForTesting();
// WorkerThread::Observer implementation.
void WillStopCurrentWorkerThread() override;
void OnServiceWorkerStateChanged(int thread_id,
int handle_id,
blink::mojom::ServiceWorkerState state);
// Keeps map from handle_id to ServiceWorker object.
void AddServiceWorker(int handle_id, WebServiceWorkerImpl* worker);
void RemoveServiceWorker(int handle_id);
// True if another dispatcher is allowed to be created on the same thread
// after this instance is destructed.
bool allow_reinstantiation_ = false;
WorkerObjectMap service_workers_;
scoped_refptr<base::SingleThreadTaskRunner> io_thread_task_runner_;
DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDispatcher);
};
} // namespace content
#endif // CONTENT_RENDERER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_H_
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