/// <summary>
/// Handles a message received event.
/// </summary>
private void MqttClient_ApplicationMessageReceived(MqttApplicationMessageReceivedEventArgs e)
{
try
{
string topic = e.ApplicationMessage.Topic;
string payload = e.ApplicationMessage.ConvertPayloadToString();
dsLog.WriteAction("{0} {1} = {2}", CommPhrases.ReceiveNotation,
topic, payload.GetPreview(MqttUtils.MessagePreviewLength));
// parse and pass command
if (topic == commandTopic)
{
ReceivedCommand command = JsonSerializer.Deserialize <ReceivedCommand>(payload);
CommContext.SendCommand(new TeleCommand
{
CommandID = ScadaUtils.GenerateUniqueID(),
CreationTime = DateTime.UtcNow,
DeviceNum = command.DeviceNum,
CmdCode = command.CmdCode,
CmdVal = command.CmdVal,
CmdData = ScadaUtils.HexToBytes(command.CmdData, false, true)
}, DriverUtils.DriverCode);
}
}
catch (JsonException)
{
dsLog.WriteError(Locale.IsRussian ?
"Ошибка при получении команды из JSON." :
"Error parsing command from JSON.");
}
catch (Exception ex)
{
dsLog.WriteError(ex, Locale.IsRussian ?
"Ошибка при обработке полученного сообщения. Топик: {0}" :
"Error handling the received message. Topic: {0}", e?.ApplicationMessage?.Topic);
}
}
/// <summary>
/// Receives telecontrol commands from the server.
/// </summary>
private void ReceiveCommands()
{
try
{
int cmdCnt = 0;
while (scadaClient.GetCommand() is TeleCommand cmd)
{
CommContext.SendCommand(cmd, Code);
if (++cmdCnt == MaxCommandCount)
{
break;
}
}
}
catch (Exception ex)
{
log.WriteError(ex, CommPhrases.DataSourceMessage, Code, Locale.IsRussian ?
"Ошибка при приёме команд ТУ" :
"Error receiving telecontrol commands");
}
}