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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.
#ifndef OSP_PUBLIC_NETWORK_SERVICE_MANAGER_H_
#define OSP_PUBLIC_NETWORK_SERVICE_MANAGER_H_
#include <memory>
#include "osp/public/protocol_connection_client.h"
#include "osp/public/protocol_connection_server.h"
#include "osp/public/service_listener.h"
#include "osp/public/service_publisher.h"
namespace openscreen {
namespace osp {
// Manages services run as part of the Open Screen Protocol Library. Library
// embedders should pass instances of required services to Create(), which will
// instantiate the singleton instance of the NetworkServiceManager and take
// ownership of the services.
//
// NOTES: If we add more injectable services, consider implementing a struct to
// hold the config vs. passsing long argument lists.
class NetworkServiceManager final {
public:
// Creates the singleton instance of the NetworkServiceManager. nullptr may
// be passed for services not provided by the embedder.
static NetworkServiceManager* Create(
std::unique_ptr<ServiceListener> mdns_listener,
std::unique_ptr<ServicePublisher> mdns_publisher,
std::unique_ptr<ProtocolConnectionClient> connection_client,
std::unique_ptr<ProtocolConnectionServer> connection_server);
// Returns the singleton instance of the NetworkServiceManager previously
// created by Create().
static NetworkServiceManager* Get();
// Destroys the NetworkServiceManager singleton and its owned services. The
// services must be shut down and no I/O or asynchronous work should be done
// by the service instance destructors.
static void Dispose();
// Returns an instance of the mDNS receiver listener, or nullptr if not
// provided.
ServiceListener* GetMdnsServiceListener();
// Returns an instance of the mDNS receiver publisher, or nullptr if not
// provided.
ServicePublisher* GetMdnsServicePublisher();
// Returns an instance of the protocol connection client, or nullptr if not
// provided.
ProtocolConnectionClient* GetProtocolConnectionClient();
// Returns an instance of the protocol connection server, or nullptr if not
// provided.
ProtocolConnectionServer* GetProtocolConnectionServer();
private:
NetworkServiceManager(
std::unique_ptr<ServiceListener> mdns_listener,
std::unique_ptr<ServicePublisher> mdns_publisher,
std::unique_ptr<ProtocolConnectionClient> connection_client,
std::unique_ptr<ProtocolConnectionServer> connection_server);
~NetworkServiceManager();
std::unique_ptr<ServiceListener> mdns_listener_;
std::unique_ptr<ServicePublisher> mdns_publisher_;
std::unique_ptr<ProtocolConnectionClient> connection_client_;
std::unique_ptr<ProtocolConnectionServer> connection_server_;
};
} // namespace osp
} // namespace openscreen
#endif // OSP_PUBLIC_NETWORK_SERVICE_MANAGER_H_