public WorkflowInstance GetWorkflowInstance(bool canCreateInstance)
{
if (this.workflowInstance == null)
{
lock (thisLock)
{
if (shouldCreateNew)
{
if (canCreateInstance)
{
this.workflowInstance = this.workflowDefinition.CreateWorkflow(this.InstanceId);
shouldCreateNew = false;
if (DiagnosticUtility.ShouldTraceInformation)
{
string traceText = SR.GetString(SR.TraceCodeWorkflowDurableInstanceActivated, InstanceId);
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.WorkflowDurableInstanceActivated, traceText,
new StringTraceRecord("DurableInstanceDetail", traceText),
this, null);
}
using (new WorkflowDispatchContext(true, true))
{
this.workflowInstance.Start();
}
}
else
{
//Make sure we clean up this InstanceContext;
DurableErrorHandler.CleanUpInstanceContextAtOperationCompletion();
//Inform InstanceLifeTimeManager to clean up record for InstanceId;
if (this.instanceContextProvider.InstanceLifeTimeManager != null)
{
this.instanceContextProvider.InstanceLifeTimeManager.CleanUp(this.InstanceId);
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new FaultException(new DurableDispatcherAddressingFault()));
}
}
else
{
this.workflowInstance = this.workflowDefinition.WorkflowRuntime.GetWorkflow(InstanceId);
if (DiagnosticUtility.ShouldTraceInformation)
{
string traceText = SR.GetString(SR.TraceCodeWorkflowDurableInstanceLoaded, InstanceId);
TraceUtility.TraceEvent(TraceEventType.Information,
TraceCode.WorkflowDurableInstanceLoaded, traceText,
new StringTraceRecord("DurableInstanceDetail", traceText),
this, null);
}
}
}
}
return(workflowInstance);
}
bool TryActivateInstance(bool canCreateInstance)
{
if (this.newServiceType != null && !this.existsInPersistence)
{
if (canCreateInstance)
{
this.instance = Activator.CreateInstance(this.newServiceType);
return(true);
}
else
{
DurableErrorHandler.CleanUpInstanceContextAtOperationCompletion();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new FaultException(new DurableDispatcherAddressingFault()));
}
}
return(false);
}