public override void RemoveConnections()
{
base.RemoveConnections();
CancellationHandler = null;
FaultHandler = null;
}
private Task ExecuteNextNode([NotNull] IActivityNode node, [NotNull] Task task)
{
if (task.IsCanceled)
{
Log.Info("At node: {0}. Cancelled", node);
IFlowNode handlerNode = node.CancellationHandler;
Debug.Assert(handlerNode != null);
return(handlerNode.Accept(this));
}
if (task.IsFaulted)
{
string message = $"At node: {node}. Faulted";
Log.Exception(message, task.Exception);
IFaultHandlerNode handlerNode = node.FaultHandler;
Debug.Assert(handlerNode != null);
return(handlerNode.Accept(this));
}
Log.Info("At node: {0}. Completed", node);
if (node.PointsTo != null)
{
return(node.PointsTo.Accept(this));
}
return(TaskHelper.CompletedTask);
}
public FlowBuilder WithDefaultFaultHandler([NotNull] IFaultHandlerNode handler)
{
handler.AssertNotNull("handler != null");
myDefaultFaultHandler.AssertIsNull("Default fault handler is already set");
handler.AssertIsItemOf(myNodes, "Handler must be part of the flow");
myIsFreezed.AssertFalse("Builder is freezed");
myDefaultFaultHandler = handler;
return(this);
}
public static TActivityNode ConnectFaultTo <TActivityNode>(
[NotNull] this TActivityNode from, [NotNull] IFaultHandlerNode to)
where TActivityNode : ActivityNode
{
from.AssertNotNull("from != null");
to.AssertNotNull("to != null");
from.FaultHandler.AssertIsNull("Fault handler is already set");
from.FaultHandler = to;
to.SubscribeToExceptionsOf(from);
return(from);
}
internal FlowDescription(
[CanBeNull] IFlowNode initialNode,
[CanBeNull] IFaultHandlerNode defaultFaultHandler, [CanBeNull] IActivityNode defaultCancellationHandler,
[NotNull] ReadOnlyCollection <IFlowNode> nodes,
[NotNull] ReadOnlyCollection <IVariable> globalVariables)
{
InitialNode = initialNode;
DefaultFaultHandler = defaultFaultHandler;
DefaultCancellationHandler = defaultCancellationHandler;
Nodes = nodes;
GlobalVariables = globalVariables;
}
public void Clear()
{
myDefaultCancellationHandler = null;
myDefaultFaultHandler = null;
foreach (IFlowNode node in myNodes)
{
node.RemoveConnections();
}
myNodes.Clear();
myGlobalVariables.Clear();
}
public DefaultHandlersSetter([NotNull] FlowDescription flowDescription)
{
myFlowDescription = flowDescription.NotNull();
myFaultHandler = flowDescription.DefaultFaultHandler;
myCancellationHandler = flowDescription.DefaultCancellationHandler;
}
