/// <summary>
/// Reads the topics from Wiren Board.
/// </summary>
private void ReadTopics()
{
IMqttClient mqttClient = null;
try
{
MqttFactory mqttFactory = new();
mqttClient = mqttFactory.CreateMqttClient();
mqttClient.UseApplicationMessageReceivedHandler(MqttClient_ApplicationMessageReceived);
logHelper.WriteMessage(string.Format(Locale.IsRussian ?
"Соединение с {0}:{1}" :
"Connect to {0}:{1}",
connOptions.Server, connOptions.Port));
MqttClientConnectResultCode resultCode =
mqttClient.ConnectAsync(connOptions.ToMqttClientOptions(), tokenSource.Token)
.Result.ResultCode;
if (resultCode == MqttClientConnectResultCode.Success)
{
logHelper.WriteMessage(Locale.IsRussian ?
"Соединение установлено успешно" :
"Connected successfully");
logHelper.WriteMessage(string.Format(Locale.IsRussian ?
"Подписка на {0}" :
"Subscribe to {0}", MainTopic));
MqttClientSubscribeOptions subscribeOptions = mqttFactory.CreateSubscribeOptionsBuilder()
.WithTopicFilter(f => f.WithTopic(MainTopic)).Build();
mqttClient.SubscribeAsync(subscribeOptions, tokenSource.Token).Wait();
while (!stopReading && !tokenSource.IsCancellationRequested)
{
Thread.Sleep(ScadaUtils.ThreadDelay);
lock (mqttLock)
{
if (DateTime.UtcNow - messageDT > ReadTimeout)
{
stopReading = true;
logHelper.WriteMessage(Locale.IsRussian ?
"Таймаут чтения истёк" :
"Read timeout expired");
}
}
}
if (WirenBoardModel.Devices.Count > 0)
{
logHelper.WriteSuccess(Locale.IsRussian ?
"Чтение топиков завершено успешно" :
"Reading topics completed successfully");
ReadResult = true;
}
else
{
logHelper.WriteError(Locale.IsRussian ?
"Подключенные устройства не найдены" :
"Connected devices not found");
}
}
else
{
logHelper.WriteError(string.Format(Locale.IsRussian ?
"Не удалось установить соединение: {0}" :
"Unable to connect: {0}", resultCode));
}
}
catch (Exception ex)
{
logHelper.WriteError(ex.Message);
}
finally
{
Disconnect(mqttClient);
OnCompleted();
}
}