private InstrumentControlProxy()
{
// Create the objects that represent the control/event connections...
// Make initial attempt to connect to the Instrument Control server.
// Get the number of times to re-try if the connection attempt fails.
NameValueCollection nvc = (NameValueCollection)System.Configuration.ConfigurationManager.GetSection("Separator/InstrumentControlConnection");
int retryCount, retryWait;
try
{
retryCount = int.Parse(nvc.Get("RetryCount"));
retryWait = int.Parse(nvc.Get("RetryWait_ms"));
}
catch
{
// Set default values in case the parse fails
retryCount = 3;
retryWait = 2000; // milliseconds
}
do
{
try
{
myXmlRpcProxy = new InstrumentControlXmlRpcProxy(
RemotingInfo.GetInstance().IcsServerURL);
retryCount = 0; // Clear the retry count as we're now connected.
}
catch (Exception ex)
{
// Connection attempt failed. Re-try if the number of attempts so far is
// within the retry count specified in the application configuration file,
// otherwise propagate an exception to tell the caller we failed to connect.
myXmlRpcProxy = null;
LogFile.AddMessage(TraceLevel.Warning, "retryCount = " + retryCount + " " + ex.Message);
if (--retryCount <= 0)
{
throw new ApplicationException(
SeparatorResourceManager.GetSeparatorString(
StringId.ExFailedToConnectToInstrumentControl));
}
// Pause before retrying connection attempt
Thread.Sleep(retryWait);
}
} while (retryCount > 0);
}
/// <summary>
/// </summary>
public void Unsubscribe()
{
try
{
if (myXmlRpcProxy != null && IsConnectionEnabled)
{
// Disconnect from the XML-RPC server
myXmlRpcProxy.Unsubscribe(RemotingInfo.GetInstance().IcsEventSinkURL);
}
}
catch (Exception ex)
{
LogFile.LogException(TraceLevel.Error, ex);
//DisableConnection();
throw new ApplicationException(
"Unsubscribe exception", ex);
}
}
/// <summary>
/// Make the connection to the Instrument Control XML-RPC server.
/// </summary>
public void Subscribe()
{
try
{
if (myXmlRpcProxy != null)
{
// Register for Instrument Control Events
myXmlRpcProxy.Subscribe(RemotingInfo.GetInstance().IcsEventSinkURL);
}
}
catch (Exception ex)
{
LogFile.LogException(TraceLevel.Error, ex);
//DisableConnection();
throw new ApplicationException(
SeparatorResourceManager.GetSeparatorString(
StringId.ExFailedToSubscribeToInstrumentControl), ex);
}
}
/// <summary>
///
/// </summary>
public void Halt()
{
bool haltResult = false, unsubscribeResult = false;
try
{
if (IsConnectionEnabled)
{
// Tell the XML-RPC server to shut down its "RoboSep" command handling
haltResult = myXmlRpcProxy.Halt();
// Disconnect from the XML-RPC server
unsubscribeResult = myXmlRpcProxy.Unsubscribe(
RemotingInfo.GetInstance().IcsEventSinkURL);
}
}
catch (WebException wex)
{
if (wex.Status != WebExceptionStatus.ConnectionClosed)
{
// Log the details of the exception
LogException(wex, "Halt1");
}
}
catch (Exception ex)
{
// Log the details of the exception
LogException(ex, "Halt2");
}
finally
{
LogFile.AddMessage(TraceLevel.Verbose,
"Instrument Control API Halt() returned " +
haltResult.ToString());
LogFile.AddMessage(TraceLevel.Verbose,
"Instrument Control API Unsubscribe() returned " +
unsubscribeResult.ToString());
DisableConnection();
}
}
/// <summary>
/// Retrieve Instrument Control server information including version number.
/// </summary>
/// <param name="gatewayURL"></param>
/// <param name="gatewayInterfaceVersion"></param>
/// <param name="serverUptime_seconds"></param>
/// <param name="instrumentControlVersion"></param>
/// <param name="instrumentSerialNumber"></param>
/// <param name="serviceConnection"></param>
public void GetServerInfo(out string gatewayURL, out string gatewayInterfaceVersion,
out string serverUptime_seconds, out string instrumentControlVersion,
out string instrumentSerialNumber, out string serviceConnection)
{
gatewayURL = gatewayInterfaceVersion = serverUptime_seconds = string.Empty;
instrumentControlVersion = instrumentSerialNumber = serviceConnection = string.Empty;
try
{
if (IsConnectionEnabled)
{
string[] serverInfo = myXmlRpcProxy.GetServerInfo();
if (serverInfo != null && serverInfo.GetLength(0) == 5)
{
gatewayURL = serverInfo[0];
gatewayInterfaceVersion = serverInfo[1];
serverUptime_seconds = serverInfo[2];
instrumentControlVersion = serverInfo[3];
instrumentSerialNumber = serverInfo[4];
}
serviceConnection = RemotingInfo.GetInstance().HostDomainName;
// If the service connection indicates the loopback address or local
// machine, clear the service connection information (this will trigger
// the UI to display a localised prompt for the user to connect a
// cable and re-start.
if (serviceConnection == RemotingInfo.GetInstance().LocalMachineName ||
serviceConnection == RemotingInfo.GetInstance().LoopbackAddress)
{
serviceConnection = string.Empty;
}
}
}
catch (Exception ex)
{
// Log the details of the exception
LogException(ex, "GetServerInfo");
}
}
private SeparatorImpl()
{
try
{
// -------------------
// Set the fully-qualified machine name for the server (optionally supplied in
// the application configuration file).
NameValueCollection nvc = (NameValueCollection)System.Configuration.ConfigurationManager.GetSection("Separator/InstrumentControlConnection");
string serverAddress = string.Empty;
try
{
serverAddress = nvc.Get("ServerAddress");
}
finally
{
// Ignore any exceptions -- if we can't read the IP address configuration
// setting then we act as if it were not specified.
}
RemotingInfo.ConfigureInstance(serverAddress);
string configuredAddress = (serverAddress == null || serverAddress == string.Empty) ?
"<Not specified>" : serverAddress;
LogFile.AddMessage(TraceLevel.Verbose, "Configured address = " + configuredAddress);
// -------------------
// Register an event handler for IInstrumentControlEvents
RemotingConfiguration.Configure("Separator.exe.config", false);
// -------------------
// Setup TCP Server channel
BinaryClientFormatterSinkProvider tcpClientSinkProvider = new BinaryClientFormatterSinkProvider();
BinaryServerFormatterSinkProvider tcpServerSinkProvider = new BinaryServerFormatterSinkProvider();
tcpServerSinkProvider.TypeFilterLevel = TypeFilterLevel.Full;
ListDictionary tcpChannelProperties = new ListDictionary();
tcpChannelProperties.Add("name", "SeparatorAPI");
tcpChannelProperties.Add("port", 3149);
TcpChannel tcpChannel = new TcpChannel(tcpChannelProperties, tcpClientSinkProvider, tcpServerSinkProvider);
ChannelServices.RegisterChannel(tcpChannel, false);
RemotingConfiguration.RegisterWellKnownServiceType(
typeof(InstrumentControlEventSink),
RemotingInfo.GetInstance().IcsEventSinkURI,
WellKnownObjectMode.Singleton);
myTCPSvr = OrcaTCPServer.GetInstance();
myTCPSvr.TCPPort = myTCP_Port;
// -------------------
// Create the InstrumentControlEventSink
try
{
theInstrumentControlEventSink =
(IInstrumentControlEvents)Activator.GetObject(
typeof(InstrumentControlEventSink),
RemotingInfo.GetInstance().IcsEventSinkURL);
theInstrumentControlEventSink.ping(); // Call a method to trigger the server
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
catch (Exception ex)
{
myInstrument = null;
Console.WriteLine(ex.GetType());
Console.WriteLine(ex.Message + "\n" + ex.InnerException);
Console.WriteLine(ex.StackTrace);
throw new ApplicationException();
}
}
