//
// Initialize the generator.
//
protected override void Initialize( )
{
this.GUID = Guid.NewGuid( ).ToString( );
this.Directory = Path.Combine(Settings.TemporaryHandlerFilesDirectory, this.GUID);
//
// Unpack
//
try {
System.IO.Directory.CreateDirectory(this.Directory);
Zip.Unpack(this.Flow.FilenameFullPath, this.Directory);
//
// Verify Bin and Config directories.
//
if (!System.IO.Directory.Exists(Path.Combine(this.Directory, "Bin")))
{
string msg = string.Format("The flow file {0} does not contain a Bin directory.", this.Flow.FilenameFullPath);
throw new HandlerException(msg);
}
if (!System.IO.Directory.Exists(Path.Combine(this.Directory, "Config")))
{
string msg = string.Format("The flow file {0} does not contain a Config directory.", this.Flow.FilenameFullPath);
throw new HandlerException(msg);
}
/* Do not check for data directory, it does not have to bee there. data directory argument in interface then becomes null.
* if ( !System.IO.Directory.Exists( Path.Combine( this.Directory, "Data" ) ) ) {
* string msg = string.Format( "The flow file {0} does not contain a Data directory.", this.Flow.FilenameFullPath );
* throw new GeneratorException( msg );
* }
* */
/* Do not check for config.xml file, it does not have to be there.
* if ( !File.Exists( Path.Combine( Path.Combine( this.Directory, "Config" ), "Config.xml" ) ) ) {
* string msg = string.Format("The flow file {0} does not contain the required Config\\Config.xml file.", this.Flow.FilenameFullPath);
* throw new RetrivalException( msg );
* }
*/
if (!File.Exists(Path.Combine(Path.Combine(this.Directory, "Config"), "Binding.xml")))
{
string msg = string.Format("The flow file {0} does not contain the required Config\\Binding.xml file.", this.Flow.FilenameFullPath);
throw new HandlerException(msg);
}
}
catch (StackOverflowException) {
throw;
}
catch (OutOfMemoryException) {
throw;
}
catch (ThreadAbortException) {
throw;
}
catch (Exception x) {
HandlerException ge = new HandlerException("Catastophics failure. Error while unpacking flow.", x);
throw ge;
}
//
// Copy needed assemblies.
//
try {
string[] files = new string[] { "ItSoftware.CompuFlow.Events.HostRuntime.dll",
"ItSoftware.ExceptionHandler.dll",
"ItSoftware.CompuFlow.Manifest.dll",
"ItSoftware.CompuFlow.Events.Interfaces.dll",
"ItSoftware.CompuFlow.Util.dll",
"ItSoftware.CompuFlow.Common.dll" };
foreach (string file in files)
{
string fromFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, file);
string toFile = Path.Combine(this.Directory, string.Format("Bin\\{0}", file));
File.Copy(fromFile, toFile, true);
}
}
catch (StackOverflowException) {
throw;
}
catch (OutOfMemoryException) {
throw;
}
catch (ThreadAbortException) {
throw;
}
catch (Exception x) {
HandlerException ae = new HandlerException("Catastrophic failure. Could not copy required host assemblies because one or more files was not found.", x);
throw ae;
}
//
// Fix Flow.config
//
try {
string sourceFlowConfigFilename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Flow.config");
string outputFlowConfigFilename = Path.Combine(this.Directory, "Flow.config");
if (File.Exists(outputFlowConfigFilename))
{
//
// Modify existing Flow.config file.
//
XmlDocument xdSource = new XmlDocument( );
xdSource.Load(sourceFlowConfigFilename);
XmlDocument xdOutput = new XmlDocument( );
xdOutput.Load(outputFlowConfigFilename);
XmlDocument xdResult = FlowConfiguration.Merge(xdSource, xdOutput);
xdResult.Save(outputFlowConfigFilename);
}
else
{
//
// Create new Flow.config file.
//
File.Copy(sourceFlowConfigFilename, outputFlowConfigFilename);
}
}
catch (StackOverflowException) {
throw;
}
catch (OutOfMemoryException) {
throw;
}
catch (ThreadAbortException) {
throw;
}
catch (Exception x) {
HandlerException ae = new HandlerException("Catastrophic failure. Could not configure Flow.config.", x);
throw ae;
}
//
// Create app domain
//
try {
AppDomainSetup ads = new AppDomainSetup( );
ads.ApplicationBase = this.Directory;
ads.ConfigurationFile = "Flow.config";
ads.PrivateBinPath = "Bin";
ads.PrivateBinPathProbe = "*";
this.AppDomain = AppDomain.CreateDomain(this.Flow.FilenameFullPath, null, ads);
}
catch (StackOverflowException) {
throw;
}
catch (OutOfMemoryException) {
throw;
}
catch (ThreadAbortException) {
throw;
}
catch (Exception x) {
HandlerException ae = new HandlerException("Catastrophic failure. Could not create application domain.", x);
throw ae;
}
//
// Create type
//
try {
this.RealFlow = (RealHandler)this.AppDomain.CreateInstanceAndUnwrap("ItSoftware.CompuFlow.Events.HostRuntime", "ItSoftware.CompuFlow.Events.HostRuntime.RealHandler");
}
catch (StackOverflowException) {
throw;
}
catch (OutOfMemoryException) {
throw;
}
catch (ThreadAbortException) {
throw;
}
catch (Exception x) {
AppDomain.Unload(this.AppDomain);
this.AppDomain = null;
HandlerException ae = new HandlerException("Could not create RealRetrival type in appdomain.", x);
throw ae;
}
//
// Mark initialization complete.
//
this.Initialized = true;
}
private void WorkerMethod()
{
//
// Thread sleep for debugging purposes only. Se conditional attribute.
//
ThreadSleep(15000);
try
{
//
// Get/Load Settings
//
Settings settings = new Settings();
//
// Delete temporary flow files, temp files and folders
//
DeleteTemporaryFiles(settings);
//
// Create controller object.
//
Controller <Settings, TransparentHandler, RealHandler, HostRuntimeSettings> controller = new Controller <Settings, TransparentHandler, RealHandler, HostRuntimeSettings>(settings, false);
//
// Status Information Host
//
StatusInformationHost <Settings, TransparentHandler, RealHandler, HostRuntimeSettings> statusInformationHost = new StatusInformationHost <Settings, TransparentHandler, RealHandler, HostRuntimeSettings>(controller, "net.pipe://localhost/ItSoftware.CompuFlow.Events");
//
// Worker loop.
//
MessageQueue mq = new MessageQueue(settings.SourceMsmqPath);
mq.Formatter = new BinaryMessageFormatter();
System.Messaging.Message sourceMsg = null;
do
{
try
{
if (this.Paused)
{
Thread.Sleep(new TimeSpan(0, 0, 5));
}
else
{
try
{
sourceMsg = null;
sourceMsg = mq.Receive(new TimeSpan(0, 0, 5));
}
catch (MessageQueueException mqe)
{
if (mqe.MessageQueueErrorCode != MessageQueueErrorCode.IOTimeout)
{
HandlerException ge = new HandlerException("MessageQueue.Receive threw an unexpected exception.", mqe);
ExceptionManager.PublishException(ge, "Log Warning Policy");
Thread.Sleep(new TimeSpan(0, 0, 5));
}
}
if (sourceMsg != null)
{
FlowManifest flowManifest = new FlowManifest(sourceMsg.Body as string);
controller.ExecuteFlow(flowManifest);
}
}
}
catch (OutOfMemoryException)
{
throw;
}
catch (StackOverflowException)
{
throw;
}
catch (ThreadAbortException)
{
controller.Stop();
throw;
}
catch (Exception x)
{
ExceptionManager.PublishException(x, "Error");
}
} while (!this.Stopped);
controller.Stop();
}
catch (ThreadAbortException tae)
{
if (!this.Stopped)
{
ExceptionManager.PublishException(tae, "Error");
System.ServiceProcess.ServiceController sc = new System.ServiceProcess.ServiceController(base.ServiceName);
sc.Stop();
}
}
catch (SettingsException se)
{
HandlerException ge = new HandlerException("Handler could not continue execution.", se);
ExceptionManager.PublishException(ge, "Error");
System.ServiceProcess.ServiceController sc = new System.ServiceProcess.ServiceController(base.ServiceName);
sc.Stop();
}
catch (HandlerException ge)
{
ExceptionManager.PublishException(ge, "Error");
System.ServiceProcess.ServiceController sc = new System.ServiceProcess.ServiceController(base.ServiceName);
sc.Stop();
}
catch (RuntimeWrappedException rwe)
{
HandlerException ge = new HandlerException("An unhandled RuntimeWrappedException exception was thrown.\r\nHandler could not continue execution.", rwe);
ExceptionManager.PublishException(ge, "Error");
System.ServiceProcess.ServiceController sc = new System.ServiceProcess.ServiceController(base.ServiceName);
sc.Stop();
}
catch (Exception x)
{
HandlerException ge = new HandlerException("An unhandled CLS complient exception was thrown.\r\nHandler could not continue execution.", x);
ExceptionManager.PublishException(ge, "Error");
System.ServiceProcess.ServiceController sc = new System.ServiceProcess.ServiceController(base.ServiceName);
sc.Stop();
}
}