Main.cpp

/**
 * MIT License
 *
 * Copyright 2021 (c) Christian von Arnim, ISW University of Stuttgart (for umati and VDW e.V.)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#include "DashboardOpcUaClient.hpp"
#include "Util/ClientVersion.hpp"
#include <signal.h>
#include <easylogging++.h>
#include <thread>
#include <chrono>
#include <atomic>
#include <ConfigureLogger.hpp>
#include <ConfigurationJsonFile.hpp>
#include <Exceptions/ConfigurationException.hpp>
#include <Exceptions/OpcUaNonGoodStatusCodeException.hpp>
#include <Exceptions/ClientNotConnected.hpp>

#include <chrono>
#include <iomanip>

std::atomic_bool running = {true};
std::atomic_bool reset = {false};

static void stopHandler(int sig) {
  LOG(INFO) << "Execution termindated by ctrl-c";
  running = false;
}

static void issueReset() {
  LOG(INFO) << "Requesting reset";
  reset = true;
}

int main(int argc, char *argv[]) {
  Umati::Util::ConfigureLogger("DashboardOpcUaClient");

  signal(SIGINT, stopHandler);
  signal(SIGTERM, stopHandler);

  LOG(INFO) << "Start Dashboard OPC UA Client";
  LOG(INFO) << "OPC UA Dashboard Client Version: " << gitClientVersion << std::endl;

  std::string configFilename("configuration.json");

  if (argc >= 2) {
    configFilename = argv[1];
  }

  std::shared_ptr<Umati::Util::Configuration> config;
  try {
    config = std::make_shared<Umati::Util::ConfigurationJsonFile>(configFilename);
    Umati::MachineObserver::Topics::Prefix = config->getMqtt().Prefix;
    Umati::MachineObserver::Topics::ClientId = config->getMqtt().ClientId;
  } catch (Umati::Util::Exception::ConfigurationException &ex) {
    LOG(ERROR) << "Configuration could not be loaded: " << ex.what();
    std::cout << "Usage <>.exe [ConfigurationFileName]";
    return 1;
  }

  std::size_t resetCounter = 0;
  while (running) {
    if (reset) {
      ++resetCounter;
      reset = false;
    }
    DashboardOpcUaClient dashboardClient(config, issueReset);

    if (!dashboardClient.connect(running)) {
      LOG(INFO) << "Connection not established, exiting.";
      return -1;
    }
    for (;;) {
      try {
        dashboardClient.ReadTypes();
        break;
      } catch (const Umati::Exceptions::ClientNotConnected &e) {
        LOG(INFO) << "Client disconnected while browsing types. Trying again: " << e.what();
      } catch (const Umati::Exceptions::OpcUaNonGoodStatusCodeException &e) {
        LOG(INFO) << "Client no good while browsing types. Trying again: " << e.what();
      }
    }

    dashboardClient.StartMachineObserver();

    while (running && !reset) {
      dashboardClient.Iterate();
    }
  }

  LOG(INFO) << "End Dashboard OPC UA Client";
  return 0;
}