/// <summary>
/// ctor
/// </summary>
/// <param name="parameters"></param>
/// <param name="logPath">tracking file path </param>
/// <param name="wfHost">Workflow service host name</param>
/// <param name="wfPersistanceDb">connection string, where WF persistance happens</param>
public XMLFileTrackingChannel(TrackingParameters parameters, string wfHost, string logPath, string wfPersistanceDb)
{
_parameters = parameters;
_wfPersistanceDb = wfPersistanceDb;
_workflowID = parameters.InstanceId.ToString();
_logLocation = logPath;
_wfHost = wfHost;
if (!Directory.Exists(_logLocation))
{
Directory.CreateDirectory(_logLocation);
}
//Start- Save Wf definition
if (_persistanceHelper == null)
{
_persistanceHelper = new XMLFilePersistence(
Path.Combine(_logLocation, _workflowID + "_def.xml"),
Path.Combine(_logLocation, _workflowID + ".xml"),
_wfPersistanceDb
);
//We will save Wf definition, if wf is new or it has been updated
if (_persistanceHelper.IsNewOrUpdatedWfDefinition(_parameters.RootActivity))
{
DateTime wfCompilationTimestamp =
_persistanceHelper.GetWfCompilationTimestamp(_parameters.RootActivity);
ActivitySummary rootActivitySummary = BuildRootActivitySummary();
String activityXml = BuildActivityXml(rootActivitySummary, wfCompilationTimestamp);
_persistanceHelper.PersistWfDefinitionXml(activityXml);
}
}
//End- Save Wf definition
}
public void Complete(bool succeeded, System.Collections.ICollection items)
{
if (_persistanceHelper != null)
{
_persistanceHelper.Dispose();
_persistanceHelper = null;
}
}
private void LogWfHostStartupInfo()
{
XMLFilePersistence persistanceHelper = new XMLFilePersistence(
Path.Combine(_logLocation, GetMachineName() + ".log"));
Process currentProcess = Process.GetCurrentProcess();
persistanceHelper.PersistWorkflowHostLog(currentProcess.ProcessName + " PID=" + currentProcess.Id + " started @ " + currentProcess.StartTime);
}
public void Commit(System.Transactions.Transaction transaction, System.Collections.ICollection items)
{
if (_persistanceHelper == null)
{
//_persistanceHelper = new XmlPersistence(Path.Combine(_logLocation, _workflowID + ".xml"));
_persistanceHelper = new XMLFilePersistence(
Path.Combine(_logLocation, _workflowID + "_def.xml"),
Path.Combine(_logLocation, _workflowID + ".xml"),
_wfPersistanceDb
);
}
_persistanceHelper.PersistTrackingRecords(items);
}
//Retruns the workflow defition sring from XML
public string GetDefinition()
{
string FileName = string.Empty;
try
{
string FolderName = Path.GetDirectoryName(TrackingFilePath);
FileName = Path.GetFileNameWithoutExtension(TrackingFilePath);
string _wfDefFilePath = Path.Combine(FolderName, FileName + "_def.xml");
XMLFilePersistence persistance = new XMLFilePersistence(_wfDefFilePath, TrackingFilePath, string.Empty);
return(persistance.GetWorkflowDefinitionString());
}
catch
{
throw new Exception("Unable to load workflow definition for '" + FileName + "'");
}
}
