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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_NAVIGATOR_CONNECT_NAVIGATOR_CONNECT_CONTEXT_H_
#define CONTENT_BROWSER_NAVIGATOR_CONNECT_NAVIGATOR_CONNECT_CONTEXT_H_
#include <map>
#include "base/memory/ref_counted.h"
#include "content/browser/message_port_delegate.h"
#include "content/common/service_worker/service_worker_status_code.h"
namespace content {
struct CrossOriginServiceWorkerClient;
class ServiceWorkerContextWrapper;
class ServiceWorkerRegistration;
// Tracks all active navigator.connect connections, wakes up service workers
// when a message arrives, and routes the messages.
// One instance of this class exists per StoragePartition.
// TODO(mek): Clean up message ports when a service worker is unregistered.
// TODO(mek): Somehow clean up connections when the client side goes away.
class NavigatorConnectContext
: public MessagePortDelegate,
public base::RefCountedThreadSafe<NavigatorConnectContext> {
public:
explicit NavigatorConnectContext(
const scoped_refptr<ServiceWorkerContextWrapper>& service_worker_context);
// Registers an accepted connection and updates MessagePortService with the
// new route/delegate for the message port associated with this connection.
void RegisterConnection(const CrossOriginServiceWorkerClient& client,
const scoped_refptr<ServiceWorkerRegistration>&
service_worker_registration);
// MessagePortDelegate implementation. For the implementation of this class,
// the route_id of a message port is always equal to the message_port_id.
void SendMessage(int route_id,
const base::string16& message,
const std::vector<int>& sent_message_port_ids) override;
void SendMessagesAreQueued(int route_id) override;
private:
friend class base::RefCountedThreadSafe<NavigatorConnectContext>;
~NavigatorConnectContext() override;
// Callback called by SendMessage when a ServiceWorkerRegistration for the
// given message port has been located.
void DoSendMessage(const CrossOriginServiceWorkerClient& client,
const base::string16& message,
const std::vector<int>& sent_message_port_ids,
ServiceWorkerStatusCode service_worker_status,
const scoped_refptr<ServiceWorkerRegistration>&
service_worker_registration);
scoped_refptr<ServiceWorkerContextWrapper> service_worker_context_;
struct Connection;
// Maps route ids to connections. For the purpose of this class, the route id
// of a connection is the same as its message_port_id.
std::map<int, Connection> connections_;
};
} // namespace content
#endif // CONTENT_BROWSER_NAVIGATOR_CONNECT_NAVIGATOR_CONNECT_CONTEXT_H_
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