public WorkflowState Visit(IGraphNode <TContext> node)
{
var activityExecution = GetActivityExecution(node);
var telemtryOperation = TelemetryHelper.InitTelemetryOperation(
_workflowTypeName,
node.Name,
node.ActivityType,
activityExecution.Id.ToString());
ActivityResult result;
object activityOutput;
try
{
result = VisitNode(
node,
activityExecution.Id,
out activityOutput);
}
catch (Exception e)
{
TelemetryHelper.SubmitException(telemtryOperation, e);
throw;
}
finally
{
TelemetryHelper.SubmitOperationResult(telemtryOperation);
}
switch (result)
{
case ActivityResult.None:
m_Execution.State = WorkflowState.Corrupted;
m_ExecutionObserver.ActivityCorrupted(
activityExecution.Id,
node.Name,
node.ActivityType);
return(WorkflowState.Corrupted);
case ActivityResult.Failed:
m_ExecutionObserver.ActivityFailed(
activityExecution.Id,
node.Name,
node.ActivityType,
activityOutput);
m_Execution.ExecutingActivities.Remove(activityExecution);
break;
case ActivityResult.Succeeded:
m_ExecutionObserver.ActivityFinished(
activityExecution.Id,
node.Name,
node.ActivityType,
activityOutput);
m_Execution.ExecutingActivities.Remove(activityExecution);
break;
case ActivityResult.Pending:
m_Execution.State = WorkflowState.InProgress;
return(WorkflowState.InProgress);
}
var edges = node.Edges.Where(e => e.Condition(m_Context, result)).ToArray();
if (edges.Length > 1)
{
m_Execution.Error = "Failed to get next node - more then one transition condition was met: "
+ Environment.NewLine
+ string.Join(Environment.NewLine, edges.Select(e => $"[{node.Name}]-{e.Description}-> [{e.Node}]"));
m_Execution.State = WorkflowState.Corrupted;
return(WorkflowState.Corrupted);
}
if (edges.Length == 0 && node.Name != "end" && node.Name != "fail")
{
m_Execution.Error = "Failed to get next node - none of transition condition was met: "
+ Environment.NewLine
+ string.Join(Environment.NewLine, node.Edges.Select(e => $"[{node.Name}]-{e.Description}-> [{e.Node}]"));
m_Execution.State = WorkflowState.Corrupted;
return(WorkflowState.Corrupted);
}
var transition = edges.FirstOrDefault();
if (transition != null)
{
var nextNode = ((INodesResolver <TContext>)_workflow)[transition.Node];
var nextResult = nextNode.Accept(GetNextNodeVisitor());
return(nextResult);
}
//TODO: =="end" is not good idea
if (node.Name == "end" && result == ActivityResult.Succeeded)
{
m_Execution.State = WorkflowState.Complete;
return(WorkflowState.Complete);
}
//TODO: =="end" is not good idea
if (node.Name == "fail")
{
m_Execution.State = WorkflowState.Failed;
return(WorkflowState.Failed);
}
m_Execution.State = WorkflowState.Corrupted;
return(WorkflowState.Corrupted);
}
public WorkflowState Visit(IGraphNode <TContext> node)
{
var activityExecution = GetActivityExecution(node);
var result = VisitNode(node, activityExecution.Id, out var activityOutput);
if (result == ActivityResult.Pending)
{
m_Execution.State = WorkflowState.InProgress;
return(WorkflowState.InProgress);
}
if (result == ActivityResult.None)
{
m_Execution.State = WorkflowState.Corrupted;
m_ExecutionObserver.ActivityCorrupted(
activityExecution.Id,
node.Name,
node.ActivityType);
return(WorkflowState.Corrupted);
}
if (result == ActivityResult.Failed)
{
m_ExecutionObserver.ActivityFailed(
activityExecution.Id,
node.Name,
node.ActivityType,
activityOutput);
m_Execution.ExecutingActivities.Remove(activityExecution);
}
if (result == ActivityResult.Succeeded)
{
m_ExecutionObserver.ActivityFinished(
activityExecution.Id,
node.Name,
node.ActivityType,
activityOutput);
m_Execution.ExecutingActivities.Remove(activityExecution);
}
var edges = node.Edges.Where(e => e.Condition(m_Context, result)).ToArray();
if (edges.Length > 1)
{
m_Execution.Error = "Failed to get next node - more then one transition condition was met: "
+ Environment.NewLine
+ string.Join(Environment.NewLine, edges.Select(e => $"[{node.Name}]-{e.Description}-> [{e.Node}]"));
m_Execution.State = WorkflowState.Corrupted;
return(WorkflowState.Corrupted);
}
if (edges.Length == 0 && node.Name != "end" && node.Name != "fail")
{
m_Execution.Error = "Failed to get next node - none of transition condition was met: "
+ Environment.NewLine
+ string.Join(Environment.NewLine, node.Edges.Select(e => $"[{node.Name}]-{e.Description}-> [{e.Node}]"));
m_Execution.State = WorkflowState.Corrupted;
return(WorkflowState.Corrupted);
}
var transition = edges.FirstOrDefault();
if (transition != null)
{
var nextNode = m_Nodes[transition.Node];
var nextResult = nextNode.Accept(GetNextNodeVisitor());
return(nextResult);
}
//TODO: =="end" is not good idea
if (node.Name == "end" && result == ActivityResult.Succeeded)
{
m_Execution.State = WorkflowState.Complete;
return(WorkflowState.Complete);
}
//TODO: =="end" is not good idea
if (node.Name == "fail")
{
m_Execution.State = WorkflowState.Failed;
return(WorkflowState.Failed);
}
m_Execution.State = WorkflowState.Corrupted;
return(WorkflowState.Corrupted);
}
