private static bool TryScheduleNextChild(CompositeActivity activity, ActivityExecutionContext executionContext) { IList <Activity> children = activity.EnabledActivities; // Find index of next activity to run. int indexOfNextActivity = 0; for (int i = (children.Count - 1); i >= 0; i--) { if (children[i].ExecutionStatus == ActivityExecutionStatus.Closed) { // Check whether this is last child? if (i == (children.Count - 1)) { return(false); } indexOfNextActivity = i + 1; break; } } children[indexOfNextActivity].RegisterForStatusChange(Activity.ClosedEvent, (IActivityEventListener <ActivityExecutionStatusChangedEventArgs>)activity); executionContext.ExecuteActivity(children[indexOfNextActivity]); activity.SetValue(ActiveChildQualifiedNameProperty, children[indexOfNextActivity].QualifiedName); return(true); }
protected internal override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext) { if (executionContext == null) { throw new ArgumentNullException("executionContext"); } Exception e = base.Parent.GetValue(ActivityExecutionContext.CurrentExceptionProperty) as Exception; if (e != null) { Type et = e.GetType(); foreach (FaultHandlerActivity activity in base.EnabledActivities) { if (this.CanHandleException(activity, et)) { base.Parent.RemoveProperty(ActivityExecutionContext.CurrentExceptionProperty); activity.SetException(e); activity.RegisterForStatusChange(Activity.ClosedEvent, this); executionContext.ExecuteActivity(activity); return(ActivityExecutionStatus.Executing); } } } return(ActivityExecutionStatus.Closed); }
protected internal override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext) { if (executionContext == null) { throw new ArgumentNullException("executionContext"); } Debug.Assert(this.Parent.GetValue(ActivityExecutionContext.CurrentExceptionProperty) != null, "No Exception contained by parent"); Exception excep = this.Parent.GetValue(ActivityExecutionContext.CurrentExceptionProperty) as Exception; if (excep != null) { Type exceptionType = excep.GetType(); foreach (FaultHandlerActivity exceptionHandler in this.EnabledActivities) { if (CanHandleException(exceptionHandler, exceptionType)) { // remove exception from here, I ate it this.Parent.RemoveProperty(ActivityExecutionContext.CurrentExceptionProperty); exceptionHandler.SetException(excep); exceptionHandler.RegisterForStatusChange(Activity.ClosedEvent, this); executionContext.ExecuteActivity(exceptionHandler); return(ActivityExecutionStatus.Executing); } } } return(ActivityExecutionStatus.Closed); }
public static ActivityExecutionStatus Execute(CompositeActivity activity, ActivityExecutionContext executionContext) { if (activity.EnabledActivities.Count == 0) { return(ActivityExecutionStatus.Closed); } activity.EnabledActivities[0].RegisterForStatusChange(Activity.ClosedEvent, (IActivityEventListener <ActivityExecutionStatusChangedEventArgs>)activity); executionContext.ExecuteActivity(activity.EnabledActivities[0]); activity.SetValue(ActiveChildQualifiedNameProperty, activity.EnabledActivities[0].QualifiedName); return(ActivityExecutionStatus.Executing); }
void IActivityEventListener <ActivityExecutionStatusChangedEventArgs> .OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { ActivityExecutionContext context = sender as ActivityExecutionContext; if (context == null) { throw new ArgumentException("sender"); } if (e.Activity == context.Activity) { if (context.Activity.HasPrimaryClosed && !((bool)context.Activity.GetValue(CompensateProcessedProperty))) { context.Activity.SetValue(CompensateProcessedProperty, true); if (context.Activity.ExecutionResult != ActivityExecutionResult.Compensated) { context.Activity.ReleaseLockOnStatusChange(this); } else { Activity compensationHandler = GetCompensationHandler(context.Activity); if (compensationHandler != null) { compensationHandler.RegisterForStatusChange(Activity.ClosedEvent, this); context.ExecuteActivity(compensationHandler); } else if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { context.Activity.ReleaseLockOnStatusChange(this); } } } } else if ((e.Activity is CompensationHandlerActivity) && (e.ExecutionStatus == ActivityExecutionStatus.Closed)) { e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); context.Activity.ReleaseLockOnStatusChange(this); } else if (e.ExecutionStatus == ActivityExecutionStatus.Closed) { e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { context.Activity.ReleaseLockOnStatusChange(this); } } }
private static bool TryScheduleNextChild(CompositeActivity activity, ActivityExecutionContext executionContext) { IList <Activity> enabledActivities = activity.EnabledActivities; int num = 0; for (int i = enabledActivities.Count - 1; i >= 0; i--) { if (enabledActivities[i].ExecutionStatus == ActivityExecutionStatus.Closed) { if (i == (enabledActivities.Count - 1)) { return(false); } num = i + 1; break; } } enabledActivities[num].RegisterForStatusChange(Activity.ClosedEvent, (IActivityEventListener <ActivityExecutionStatusChangedEventArgs>)activity); executionContext.ExecuteActivity(enabledActivities[num]); activity.SetValue(ActiveChildQualifiedNameProperty, enabledActivities[num].QualifiedName); return(true); }
void IActivityEventListener <ActivityExecutionStatusChangedEventArgs> .OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { ActivityExecutionContext context = sender as ActivityExecutionContext; if (context == null) { throw new ArgumentException("sender"); } if (e.Activity == context.Activity) { if (context.Activity.HasPrimaryClosed && !(bool)context.Activity.GetValue(CompensateProcessedProperty)) { context.Activity.SetValue(CompensateProcessedProperty, true); if (context.Activity.ExecutionResult == ActivityExecutionResult.Compensated) { // run compensation handler or do default compensation handling Activity compensationHandler = GetCompensationHandler(context.Activity); if (compensationHandler != null) { // subscribe for status change on compensation handler compensationHandler.RegisterForStatusChange(Activity.ClosedEvent, this); // execute compensation handler context.ExecuteActivity(compensationHandler); } else { // do default compensation if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { // let activity get into closed state context.Activity.ReleaseLockOnStatusChange(this); } } } else { // let activity get into closed state context.Activity.ReleaseLockOnStatusChange(this); } } } else if (e.Activity is CompensationHandlerActivity && e.ExecutionStatus == ActivityExecutionStatus.Closed) { // remove subscriber for status change on compensation handler e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); // release lock on the primary activity context.Activity.ReleaseLockOnStatusChange(this); } else if (e.ExecutionStatus == ActivityExecutionStatus.Closed) { // remove subscriber for status change on compensated activity e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { // release lock on the primary activity context.Activity.ReleaseLockOnStatusChange(this); } } }
public void OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { ActivityExecutionContext context = sender as ActivityExecutionContext; if (context == null) { throw new ArgumentException("sender"); } // waiting for primary activity to close if (e.Activity == context.Activity) { if (context.Activity.HasPrimaryClosed && !(bool)context.Activity.GetValue(FaultAndCancellationHandlingFilter.FaultProcessedProperty)) { context.Activity.SetValue(FaultAndCancellationHandlingFilter.FaultProcessedProperty, true); if (context.Activity.WasExecuting && context.Activity.ExecutionResult == ActivityExecutionResult.Faulted && context.Activity.GetValue(ActivityExecutionContext.CurrentExceptionProperty) != null) { // execute exceptionHandlers, iff activity has transitioned from Executing to Faulting. CompositeActivity exceptionHandlersActivity = FaultAndCancellationHandlingFilter.GetFaultHandlers(context.Activity); if (exceptionHandlersActivity != null) { // listen for FaultHandler status change events exceptionHandlersActivity.RegisterForStatusChange(Activity.ClosedEvent, this); // execute exception handlers context.ExecuteActivity(exceptionHandlersActivity); } else { // compensate completed children if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { SafeReleaseLockOnStatusChange(context); // no children to compensate...release lock on to the close status of the activity } } } else if (context.Activity.ExecutionResult == ActivityExecutionResult.Canceled) { // if primary activity is closed and outcome is canceled, then run the cancel handler Activity cancelHandler = FaultAndCancellationHandlingFilter.GetCancellationHandler(context.Activity); if (cancelHandler != null) { // execute the cancel handler cancelHandler.RegisterForStatusChange(Activity.ClosedEvent, this); context.ExecuteActivity(cancelHandler); } else { // run default compensation if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { SafeReleaseLockOnStatusChange(context); // release lock on to the close status of the activity } } } else // release lock on to the close status of the activity { SafeReleaseLockOnStatusChange(context); } } } else if ((e.Activity is FaultHandlersActivity || e.Activity is CancellationHandlerActivity) && (e.ExecutionStatus == ActivityExecutionStatus.Closed) ) { // remove subscriber e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); // fetch the exception , it would be null if it was handled if (context.Activity.GetValue(ActivityExecutionContext.CurrentExceptionProperty) != null) { // the exception was not handled by exceptionHandlers.... do default exceptionHandling // compesate completed children if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { SafeReleaseLockOnStatusChange(context); // no children to compensate.Release lock on to the close status of the activity } } else// the exception was handled by the exceptionHandlers. Release lock on to the close status of the parent activity { SafeReleaseLockOnStatusChange(context); } } else if (e.ExecutionStatus == ActivityExecutionStatus.Closed) { // compensation of a child was in progress. // remove subscriber for this e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); // see if there are other children to be compensated if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { SafeReleaseLockOnStatusChange(context); // release lock on to the close status of the parent activity } } }
public void OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { ActivityExecutionContext context = sender as ActivityExecutionContext; if (context == null) { throw new ArgumentException("sender"); } if (e.Activity == context.Activity) { if (context.Activity.HasPrimaryClosed && !((bool)context.Activity.GetValue(FaultProcessedProperty))) { context.Activity.SetValue(FaultProcessedProperty, true); if ((!context.Activity.WasExecuting || (context.Activity.ExecutionResult != ActivityExecutionResult.Faulted)) || (context.Activity.GetValue(ActivityExecutionContext.CurrentExceptionProperty) == null)) { if (context.Activity.ExecutionResult != ActivityExecutionResult.Canceled) { this.SafeReleaseLockOnStatusChange(context); } else { Activity cancellationHandler = GetCancellationHandler(context.Activity); if (cancellationHandler != null) { cancellationHandler.RegisterForStatusChange(Activity.ClosedEvent, this); context.ExecuteActivity(cancellationHandler); } else if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { this.SafeReleaseLockOnStatusChange(context); } } } else { CompositeActivity faultHandlers = GetFaultHandlers(context.Activity); if (faultHandlers != null) { faultHandlers.RegisterForStatusChange(Activity.ClosedEvent, this); context.ExecuteActivity(faultHandlers); } else if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { this.SafeReleaseLockOnStatusChange(context); } } } } else if (((e.Activity is FaultHandlersActivity) || (e.Activity is CancellationHandlerActivity)) && (e.ExecutionStatus == ActivityExecutionStatus.Closed)) { e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); if (context.Activity.GetValue(ActivityExecutionContext.CurrentExceptionProperty) == null) { this.SafeReleaseLockOnStatusChange(context); } else if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { this.SafeReleaseLockOnStatusChange(context); } } else if (e.ExecutionStatus == ActivityExecutionStatus.Closed) { e.Activity.UnregisterForStatusChange(Activity.ClosedEvent, this); if (!CompensationUtils.TryCompensateLastCompletedChildActivity(context, context.Activity, this)) { this.SafeReleaseLockOnStatusChange(context); } } }