//ReturnValue.ERROR is
//1) when Devices.xml could not be loaded
//2) No Header found in Devices.xml
//3) No bufferSize, sender, or version in Header Element
public virtual void Start()
{
try {
/* DeviceEntry ldap = new DeviceEntry(this.config);
* LogToFile.Log("LDAP DeviceEntry Starting");
* ldap.LDAPDeviceEntry();
* LogToFile.Log("LDAP DeviceEntry Finished");*/
if (data.loadConfig() == ReturnValue.ERROR)
{
LogToFile.Log("Agent Start Failed.\n Problem in Devices.xml");
throw new AgentException("Agent Start Failed.\n Problem in Devices.xml");
}
//to check Devices.xml about nativeUnits and Units.
//data.checkConfig(); //throw exception
hst = new HttpServer(data);
hst.Start();
} catch (AgentException e) {
if (e.InnerException != null)
{
LogToFile.Log(e.Message + e.InnerException.Message);
}
else
{
LogToFile.Log(e.Message);
}
throw e;
} catch (System.UnauthorizedAccessException eu) {
//Cannot use Local System Account
throw eu;
} catch (Exception e) {
LogToFile.Log("Agent Start has Failed. " + e);
throw new AgentException("Agent Start has Failed. ", e);
}
}
public Configuration(bool LoadDefault)
{
if (LoadDefault)
{
TextReader xmlIn = null;
try
{
xmlIn = new StreamReader(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + Path.DirectorySeparatorChar + DEFAULT_FILE_NAME);
XmlSerializer s = new XmlSerializer(typeof(Configuration));
CloneConfiguration((Configuration)s.Deserialize(xmlIn));
}
catch (Exception e)
{
LogToFile.Log("Agent Start has Failed.\n Problem with " + DEFAULT_FILE_NAME + ". " + e.Message);
throw new AgentException("Agent Start has Failed.\n Problem with " + DEFAULT_FILE_NAME + ". " + e.Message);
}
finally
{
if (xmlIn != null)
{
xmlIn.Close();
}
}
}
}
public virtual void Stop()
{
try {
hst.Stop();
} catch (Exception e) {
LogToFile.Log("Agent Stop has Failed. " + e);
throw new AgentException("Agent Stop has Failed. ", e);
}
}
public Agent()
{
data = new Data();
this.exeFilePath = Assembly.GetExecutingAssembly().Location;
config = new Configuration(true); //LOAD_DEFAULT_CONFIGURATION = true
LogToFile.Initialize(config.UseLogFile);
data.currentXSLTHREF = config.CurrentXSLTHREF;
data.probeXSLTHREF = config.ProbeXSLTHREF;
data.errorXSLTHREF = config.ErrorXSLTHREF;
}
//return value as double if _value can be converted to double otherwise throw exception
internal static double getDValue(String _timestamp, String _deviceName, String _dataItemName, String _value, String _workPieceId, String _partId)
{
try {
return(Double.Parse(_value));
} catch (ArgumentNullException) {
String msg = "Missing value for " + StoreSampleToString(_timestamp, _deviceName, _dataItemName, _value, _workPieceId, _partId);
LogToFile.Log(msg);
throw new AgentException(msg);
} catch (Exception) //FormatException, OverflowException
{
String msg = "Value \"" + _value + "\" can not converted into number for " + StoreSampleToString(_timestamp, _deviceName, _dataItemName, _value, _workPieceId, _partId);
LogToFile.Log(msg);
throw new AgentException(msg);
}
}
internal void Start()
{
if (this.IsStarted)
{
return;
}
if (this.Listener == null)
{
this.Listener = new HttpListener();
}
this.Listener.Prefixes.Add("http://+:5000/");
this.IsStarted = true;
try {
this.Listener.Start();
} catch (System.Net.HttpListenerException ex) {
LogToFile.Log("HttpServer.Start Error: " + ex);
throw new AgentException("Agent Start Failed. Please make sure port 5000 is available for Agent.");
}
IAsyncResult result = this.Listener.BeginGetContext(new AsyncCallback(WebRequestCallback), this.Listener);
}
