opc_tcp_async_addon.cpp

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/******************************************************************************
 *   Copyright (C) 2013-2014 by Alexander Rykovanov                        *
 *   rykovanov.as@gmail.com                                                   *
 *                                                                            *
 *   This library is free software; you can redistribute it and/or modify     *
 *   it under the terms of the GNU Lesser General Public License as           *
 *   published by the Free Software Foundation; version 3 of the License.     *
 *                                                                            *
 *   This library is distributed in the hope that it will be useful,          *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of           *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            *
 *   GNU Lesser General Public License for more details.                      *
 *                                                                            *
 *   You should have received a copy of the GNU Lesser General Public License *
 *   along with this library; if not, write to the                            *
 *   Free Software Foundation, Inc.,                                          *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.                *
 ******************************************************************************/

#include "opc_tcp_async_parameters.h"

#include "endpoints_parameters.h"

#include <opc/common/uri_facade.h>
#include <opc/ua/server/addons/asio_addon.h>
#include <opc/ua/server/addons/endpoints_services.h>
#include <opc/ua/server/addons/opc_tcp_async.h>
#include <opc/ua/server/addons/services_registry.h>
#include <opc/ua/server/opc_tcp_async.h>

#include <iostream>
#include <vector>

namespace
{
using namespace OpcUa::Server;

class AsyncOpcTcpAddon : public Common::Addon
{
public:
  DEFINE_CLASS_POINTERS(AsyncOpcTcpAddon)

public:
  virtual void Initialize(Common::AddonsManager & addons, const Common::AddonParameters & params) override;
  virtual void Stop() override;

public:
  void PublishApplicationsInformation(std::vector<OpcUa::ApplicationDescription> applications, std::vector<OpcUa::EndpointDescription> endpoints, const Common::AddonsManager & addons) const;

private:
  Common::Logger::SharedPtr Logger;
  AsyncOpcTcp::SharedPtr Endpoint;
};


void AsyncOpcTcpAddon::Initialize(Common::AddonsManager & addons, const Common::AddonParameters & addonParams)
{
  Logger = addons.GetLogger();
  AsyncOpcTcp::Parameters params = GetOpcTcpParameters(addonParams);

  LOG_DEBUG(Logger, "opc_tcp_async         | parameters:");
  LOG_DEBUG(Logger, "opc_tcp_async         |   DebugMode: {}", params.DebugMode);

  const std::vector<OpcUa::Server::ApplicationData> applications = OpcUa::ParseEndpointsParameters(addonParams.Groups, Logger);

  if (Logger && Logger->should_log(spdlog::level::debug))
    {
      for (OpcUa::Server::ApplicationData d : applications)
        {
          Logger->debug("opc_tcp_async         | Endpoint is: {}", d.Endpoints.front().EndpointUrl);
        }
    }

  std::vector<OpcUa::ApplicationDescription> applicationDescriptions;
  std::vector<OpcUa::EndpointDescription> endpointDescriptions;

  for (const OpcUa::Server::ApplicationData application : applications)
    {
      applicationDescriptions.push_back(application.Application);
      endpointDescriptions.insert(endpointDescriptions.end(), application.Endpoints.begin(), application.Endpoints.end());
    }

  if (endpointDescriptions.empty())
    {
      LOG_ERROR(Logger, "opc_tcp_async         | Endpoints parameter not present in configuration");
      return;
    }

  if (endpointDescriptions.size() > 1)
    {
      LOG_ERROR(Logger, "opc_tcp_async         | too many endpoints specified in configuration");
      return;
    }

  PublishApplicationsInformation(applicationDescriptions, endpointDescriptions, addons);
  OpcUa::Server::ServicesRegistry::SharedPtr internalServer = addons.GetAddon<OpcUa::Server::ServicesRegistry>(OpcUa::Server::ServicesRegistryAddonId);
  OpcUa::Server::AsioAddon::SharedPtr asio = addons.GetAddon<OpcUa::Server::AsioAddon>(OpcUa::Server::AsioAddonId);

  params.Port = Common::Uri(endpointDescriptions[0].EndpointUrl).Port();
  Endpoint = CreateAsyncOpcTcp(params, internalServer->GetServer(), asio->GetIoService(), Logger);
  Endpoint->Listen();
}

void AsyncOpcTcpAddon::PublishApplicationsInformation(std::vector<OpcUa::ApplicationDescription> applications, std::vector<OpcUa::EndpointDescription> endpoints, const Common::AddonsManager & addons) const
{
  OpcUa::Server::EndpointsRegistry::SharedPtr endpointsAddon = addons.GetAddon<OpcUa::Server::EndpointsRegistry>(OpcUa::Server::EndpointsRegistryAddonId);

  if (!endpointsAddon)
    {
      LOG_ERROR(Logger, "opc_tcp_async         | cannot publish information about endpoints. Endpoints services addon not registered.");
      return;
    }

  endpointsAddon->AddEndpoints(endpoints);
  endpointsAddon->AddApplications(applications);
}

void AsyncOpcTcpAddon::Stop()
{
  Endpoint->Shutdown();
  Endpoint.reset();
}

}

namespace OpcUa
{
namespace Server
{

Common::Addon::UniquePtr AsyncOpcTcpAddonFactory::CreateAddon()
{
  return Common::Addon::UniquePtr(new AsyncOpcTcpAddon());
}

}
}