internal void RevertToCheckpointState()
{
Debug.Assert(this.clonedInstanceStateStream != null, "cloned instance-state stream null at restore time");
// deserialize only on first access
Activity clonedRootActivity = null;
this.clonedInstanceStateStream.Position = 0;
using (RuntimeEnvironment runtimeEnv = new RuntimeEnvironment(this.workflowExecutor.WorkflowRuntime))
{
clonedRootActivity = Activity.Load(this.clonedInstanceStateStream, (Activity)this.workflowDefinition);
}
Debug.Assert(clonedRootActivity != null);
//
// Set the trackingListenerBroker before initializing the executor so the tracking
// runtime gets a reference to the correct object
clonedRootActivity.SetValue(WorkflowExecutor.TrackingListenerBrokerProperty, workflowExecutor.RootActivity.GetValue(WorkflowExecutor.TrackingListenerBrokerProperty));
// create the new workflowExecutor
WorkflowExecutor newWorkflowExecutor = new WorkflowExecutor(Guid.Empty); // use a dummy guid while swapping executors
newWorkflowExecutor.Initialize(clonedRootActivity, this.workflowExecutor.WorkflowRuntime, this.workflowExecutor);
// enqueue the activity notifier
Activity activityContext = newWorkflowExecutor.GetContextActivityForId(this.activityContextId);
Activity activity = activityContext.GetActivityByName(this.activityQualifiedName);
using (new ServiceEnvironment(activity))
{
using (newWorkflowExecutor.SetCurrentActivity(activity))
{
using (ActivityExecutionContext executionContext = new ActivityExecutionContext(activity))
executionContext.Invoke<EventArgs>(this.callbackHandler, this.callbackData);
}
}
//
// Push the batch item ordering id to the new instance
newWorkflowExecutor.BatchCollection.WorkItemOrderId = this.workflowExecutor.BatchCollection.WorkItemOrderId;
// replace pending batch items
foreach (KeyValuePair<object, WorkBatch> batch in this.workflowExecutor.BatchCollection)
{
batch.Value.SetWorkBatchCollection(newWorkflowExecutor.BatchCollection);
Activity oldActivity = batch.Key as Activity;
// no need to add the transient state batch
if (oldActivity != null)
{
Activity newactivity = activityContext.GetActivityByName(oldActivity.QualifiedName);
newWorkflowExecutor.BatchCollection.Add(newactivity, batch.Value);
}
}
this.workflowExecutor.BatchCollection.Clear();
Debug.Assert(this.completedContextActivities != null);
newWorkflowExecutor.CompletedContextActivities = this.completedContextActivities;
// replace with the WorkflowRuntime
Debug.Assert(this.workflowExecutor.IsInstanceValid);
this.workflowExecutor.WorkflowRuntime.ReplaceWorkflowExecutor(this.workflowExecutor.InstanceId, this.workflowExecutor, newWorkflowExecutor);
// now resume or suspend the scheduler as needed
if (!this.suspendOnRevert)
{
// get the new one going
newWorkflowExecutor.Scheduler.Resume();
}
else
{
// this call will be old scheduler's thread
newWorkflowExecutor.SuspendOnIdle(this.suspendOnRevertInfo);
}
DisposeCheckpointState();
}
Activity IWorkflowCoreRuntime.LoadContextActivity(ActivityExecutionContextInfo contextInfo, Activity outerActivity)
{
if (!ServiceEnvironment.IsInServiceThread(this.InstanceId))
throw new InvalidOperationException(ExecutionStringManager.MustUseRuntimeThread);
Activity contextActivity = null;
if (this.completedContextActivities.Contains(contextInfo))
{
contextActivity = (Activity)this.completedContextActivities[contextInfo];
this.completedContextActivities.Remove(contextInfo);
if (contextActivity.Parent != outerActivity.Parent)
contextActivity.parent = outerActivity.Parent;
}
else
{
using (RuntimeEnvironment runtimeEnv = new RuntimeEnvironment(this.WorkflowRuntime))
{
contextActivity = this.WorkflowRuntime.WorkflowPersistenceService.LoadCompletedContextActivity(contextInfo.ContextGuid, outerActivity);
if (contextActivity == null)
throw new InvalidOperationException(ExecutionStringManager.LoadContextActivityFailed);
}
}
return contextActivity;
}
internal void RevertToCheckpointState()
{
Debug.Assert(this.clonedInstanceStateStream != null, "cloned instance-state stream null at restore time");
// deserialize only on first access
Activity clonedRootActivity = null;
this.clonedInstanceStateStream.Position = 0;
using (RuntimeEnvironment runtimeEnv = new RuntimeEnvironment(this.workflowExecutor.WorkflowRuntime))
{
clonedRootActivity = Activity.Load(this.clonedInstanceStateStream, (Activity)this.workflowDefinition);
}
Debug.Assert(clonedRootActivity != null);
//
// Set the trackingListenerBroker before initializing the executor so the tracking
// runtime gets a reference to the correct object
clonedRootActivity.SetValue(WorkflowExecutor.TrackingListenerBrokerProperty, workflowExecutor.RootActivity.GetValue(WorkflowExecutor.TrackingListenerBrokerProperty));
// create the new workflowExecutor
WorkflowExecutor newWorkflowExecutor = new WorkflowExecutor(Guid.Empty); // use a dummy guid while swapping executors
newWorkflowExecutor.Initialize(clonedRootActivity, this.workflowExecutor.WorkflowRuntime, this.workflowExecutor);
// enqueue the activity notifier
Activity activityContext = newWorkflowExecutor.GetContextActivityForId(this.activityContextId);
Activity activity = activityContext.GetActivityByName(this.activityQualifiedName);
using (new ServiceEnvironment(activity))
{
using (newWorkflowExecutor.SetCurrentActivity(activity))
{
using (ActivityExecutionContext executionContext = new ActivityExecutionContext(activity))
executionContext.Invoke <EventArgs>(this.callbackHandler, this.callbackData);
}
}
//
// Push the batch item ordering id to the new instance
newWorkflowExecutor.BatchCollection.WorkItemOrderId = this.workflowExecutor.BatchCollection.WorkItemOrderId;
// replace pending batch items
foreach (KeyValuePair <object, WorkBatch> batch in this.workflowExecutor.BatchCollection)
{
batch.Value.SetWorkBatchCollection(newWorkflowExecutor.BatchCollection);
Activity oldActivity = batch.Key as Activity;
// no need to add the transient state batch
if (oldActivity != null)
{
Activity newactivity = activityContext.GetActivityByName(oldActivity.QualifiedName);
newWorkflowExecutor.BatchCollection.Add(newactivity, batch.Value);
}
}
this.workflowExecutor.BatchCollection.Clear();
Debug.Assert(this.completedContextActivities != null);
newWorkflowExecutor.CompletedContextActivities = this.completedContextActivities;
// replace with the WorkflowRuntime
Debug.Assert(this.workflowExecutor.IsInstanceValid);
this.workflowExecutor.WorkflowRuntime.ReplaceWorkflowExecutor(this.workflowExecutor.InstanceId, this.workflowExecutor, newWorkflowExecutor);
// now resume or suspend the scheduler as needed
if (!this.suspendOnRevert)
{
// get the new one going
newWorkflowExecutor.Scheduler.Resume();
}
else
{
// this call will be old scheduler's thread
newWorkflowExecutor.SuspendOnIdle(this.suspendOnRevertInfo);
}
DisposeCheckpointState();
}
