private static void RepairMosquittoService()
{
try
{
// check if FDA process was run with elevated permissions
if (Globals.FDAIsElevated)
{
Globals.SystemManager.LogApplicationEvent(null, "", "Unable to connect to the MQTT broker, attempting to repair the service");
string result = MQTTUtils.RepairMQTT();
if (result == "")
{
Globals.SystemManager.LogApplicationEvent(null, "", "MQTT succesfully repaired");
}
else
{
Globals.SystemManager.LogApplicationEvent(null, "", "Unable to repair MQTT broker: " + result);
}
}
else
{
if (!FDAElevationMessagePosted)
{
Globals.SystemManager.LogApplicationEvent(null, "", "Warning: Unable to connect to the MQTT Broker, and the FDA cannot repair the issue because it does not have administrator privileges, please run the FDA as Administrator/SuperUser");
FDAElevationMessagePosted = true;
}
}
}
catch (Exception ex)
{
Globals.SystemManager.LogApplicationError(Globals.FDANow(), ex, "Error while attempting to repair the Mosquitto Broker service");
}
}
static private void MQTT_ConnectionClosed(object sender, EventArgs e)
{
if (Globals.MQTTEnabled)
{
Globals.SystemManager.LogApplicationEvent(null, "", "Disconnected from MQTT broker. Will attempt to reconnect every 5 seconds until connection is re-established");
if (MqttRetryTimer == null)
{
MqttRetryTimer = new System.Threading.Timer(MQTTConnect, null, 5000, 5000);
}
else
{
MqttRetryTimer.Change(5000, 5000);
}
}
else
{
Globals.SystemManager.LogApplicationEvent(null, "", "Disconnected from MQTT broker");
if (Globals.FDAIsElevated)
{
MQTTUtils.StopMosquittoService();
}
else
{
Globals.SystemManager.LogApplicationEvent(null, "", "Unable to stop MQTT broker service, FDA not run as Administrator");
}
}
}
static void Main(string[] args)
{
// check if an instance is already running
Process[] proc = Process.GetProcessesByName("FDACore");
if (proc.Length > 1)
{
Console.WriteLine("An existing FDA instance was detected, closing");
OperationalMessageServer.WriteLine("An existing FDA instance was detected, closing");
return;
}
// check arguments for console mode
Globals.ConsoleMode = args.Contains("-console");
string message = "Starting the FDA in background mode";
if (Globals.ConsoleMode)
{
message = "Starting the FDA in console mode";
}
Console.WriteLine(message);
// generate a new execution ID
ExecutionID = Guid.NewGuid();
// record the time of execution
Globals.ExecutionTime = Globals.FDANow();
// get the FDA version string
Globals.FDAVersion = Assembly.GetEntryAssembly().GetName().Version.ToString();
// load the configuration from appsettings.json file
string FDAID;
string DBInstance;
string DBName;
string userName;
string userPass;
IConfigurationSection appConfig = null;
try
{
configuration = new ConfigurationBuilder().AddJsonFile("appsettings.json", false, true).Build();
appConfig = configuration.GetSection(nameof(AppSettings));
FDAID = appConfig["FDAID"];
DBInstance = appConfig["DatabaseInstance"];
DBType = appConfig["DatabaseType"];
DBName = appConfig["SystemDBName"];
userName = appConfig["SystemLogin"];
userPass = appConfig["SystemDBPass"];
if (DBInstance.Contains("(default"))
{
DBInstance = DBInstance.Replace("(default)", "");
LogEvent("DatabaseInstance setting not found, using the default value");
}
if (DBName.Contains("(default"))
{
DBName = DBName.Replace("(default)", "");
LogEvent("SystemDBName setting not found, using the default value");
}
if (userName.Contains("(default"))
{
userName = userName.Replace("(default)", "");
LogEvent("SystemLogin setting not found, using the default value");
}
if (userPass.Contains("(default"))
{
userPass = userPass.Replace("(default)", "");
LogEvent("SystemLogin setting not found, using the default value ");
}
if (FDAID.Contains("(default"))
{
FDAID = FDAID.Replace("(default)", "");
LogEvent("FDAID setting not found, using the default");
}
}
catch (Exception ex)
{
OperationalMessageServer.WriteLine("Error while reading appsettings.json \"" + ex.Message + "\"\nFDA Exiting");
Console.WriteLine("Error while reading appsettings.json \"" + ex.Message + "\"");
Console.WriteLine("FDA Exiting");
Console.Read();
return;
}
// start basic services server
Console.WriteLine("Starting the basic services control port server");
_FDAControlServer = TCPServer.NewTCPServer(9572);
if (_FDAControlServer != null)
{
_FDAControlServer.DataAvailable += TCPServer_DataAvailable;
_FDAControlServer.ClientDisconnected += TCPServer_ClientDisconnected;
_FDAControlServer.ClientConnected += TCPServer_ClientConnected;
_FDAControlServer.Start();
}
else
{
Globals.SystemManager.LogApplicationError(Globals.FDANow(), TCPServer.LastError, "Error occurred while initializing the Basic Services Control Port Server");
}
// start operational messages server
Console.WriteLine("Starting the operational messages streaming server");
OperationalMessageServer.Start();
// give clients a chance to connect to the server(s) before continuing
Console.WriteLine("Waiting five seconds to allow clients to connect to the BSCP or OMSP ports");
Thread.Sleep(5000);
// if running in background mode: hide the console, disable the x button, and disable quick edit mode (windows only)
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
// hide the console window if the -show command line option is not specified
if (!args.Contains("-console"))
{
var handle = NativeMethods.GetConsoleWindow();
NativeMethods.ShowWindow(handle, NativeMethods.SW_HIDE);
}
else
{
// the console window is shown, we need to change some settings
IntPtr conHandle = NativeMethods.GetConsoleWindow();
//disable the window close button(X)
NativeMethods.DeleteMenu(NativeMethods.GetSystemMenu(conHandle, false), NativeMethods.SC_CLOSE, NativeMethods.MF_BYCOMMAND);
// disable quick edit mode (this causes the app to pause when the user clicks in the console window)
IntPtr stdHandle = NativeMethods.GetStdHandle(NativeMethods.STD_INPUT_HANDLE);
if (!NativeMethods.GetConsoleMode(stdHandle, out int mode))
{
// error getting the console mode
Console.WriteLine("Error retrieving console mode");
OperationalMessageServer.WriteLine("Error retrieving the console mode");
}
mode &= ~(NativeMethods.QuickEditMode | NativeMethods.ExtendedFlags);
if (!NativeMethods.SetConsoleMode(stdHandle, mode))
{
// error setting console mode.
Console.WriteLine("Error setting console mode");
OperationalMessageServer.WriteLine("Error while settting the console mode");
}
}
}
// initialize and start data acquisition
try // general error catching
{
Globals.FDAIsElevated = false;
Globals.FDAIsElevated = MQTTUtils.ThisProcessIsAdmin();
// start the FDASystemManager
FDASystemManager systemManager;
switch (DBType.ToUpper())
{
case "POSTGRESQL": systemManager = new FDASystemManagerPG(DBInstance, DBName, userName, userPass, Globals.FDAVersion, ExecutionID); break;
case "SQLSERVER": systemManager = new FDASystemManagerSQL(DBInstance, DBName, userName, userPass, Globals.FDAVersion, ExecutionID); break;
default:
LogEvent("Unrecognized database server type '" + DBType + "'. Should be 'POSTGRESQL' or 'SQLSERVER'");
return;
}
Dictionary <string, FDAConfig> options = systemManager.GetAppConfig();
systemManager.LogStartup(ExecutionID, Globals.FDANow(), Globals.FDAVersion);
// set the "detailed messaging" flag
if (options.ContainsKey("DetailedMessaging"))
{
Globals.DetailedMessaging = (systemManager.GetAppConfig()["DetailedMessaging"].OptionValue == "on");
}
// connect to the MQTT broker
Globals.MQTTEnabled = false;
if (options.ContainsKey("MQTTEnabled"))
{
Globals.MQTTEnabled = (options["MQTTEnabled"].OptionValue == "1");
}
if (Globals.MQTTEnabled)
{
MQTTConnect("localhost");
Globals.MQTT?.Publish("FDA/DBType", Encoding.UTF8.GetBytes(DBType.ToUpper()), 0, true);
}
else
{
Console.WriteLine("MQTT is disabled in AppConfig table, skipping MQTT connection");
}
Globals.FDAStatus = Globals.AppState.Starting;
// create a DBManager of the selected type
string FDADBConnString = systemManager.GetAppDBConnectionString();
DBManager dbManager;
Console.WriteLine("Connecting to the " + DBType + " database");
switch (DBType.ToUpper())
{
case "SQLSERVER": dbManager = new DBManagerSQL(FDADBConnString); break;
case "POSTGRESQL": dbManager = new DBManagerPG(FDADBConnString); break;
default:
Globals.SystemManager.LogApplicationEvent("FDA App", "", "unrecognized database server type '" + DBType + "', unable to continue");
return;
}
Console.WriteLine("Starting the Data Acquisition Manager");
// start the DataAcqManager
_dataAquisitionManager = new DataAcqManager(FDAID, dbManager, ExecutionID);
// watch for changes to the MQTTEnabled option
_dataAquisitionManager.MQTTEnableStatusChanged += DataAquisitionManager_MQTTEnableStatusChanged;
if (_dataAquisitionManager.TestDBConnection())
{
_dataAquisitionManager.Start();
Globals.FDAStatus = Globals.AppState.Normal;
}
else
{
Console.WriteLine("Failed to connect to database, exiting");
return;
}
}
catch (Exception ex)
{
if (Globals.SystemManager != null)
{
Globals.SystemManager.LogApplicationError(Globals.FDANow(), ex, "FDA: error in application initilization");
}
else
{
Console.WriteLine("FDA: error in application initilization: " + ex.Message + " Stacktrace: " + ex.StackTrace);
}
return;
}
while (!ShutdownComplete)
{
Thread.Sleep(1000);
}
}
