private async Task <int> PerformFlowStep(FlowContext stepFlowContext, FlowDefinition <TFlowRequest, TFlowResponse> flowDefinition, FlowStep flowStep,
int flowStepIndex, FlowValues flowValues, FlowTrace flowTrace, CancellationToken cancellationToken)
{
int nextFlowStepIndex;
switch (flowStep)
{
case ActivityFlowStep activityFlowStep:
await DoActivity(
activityFlowStep, stepFlowContext, flowValues,
flowTrace, cancellationToken);
nextFlowStepIndex = flowStepIndex + 1;
break;
case DecisionFlowStepBase decisionFlowStep:
nextFlowStepIndex =
CheckDecision(
flowStepIndex, decisionFlowStep, flowDefinition, stepFlowContext, flowValues,
flowTrace);
break;
case GotoFlowStep gotoFlowStep:
_logger.LogGoto(stepFlowContext, gotoFlowStep.NextStepName);
nextFlowStepIndex = flowDefinition.GetStepIndex(gotoFlowStep.NextStepName);
break;
case LabelFlowStep _:
RecordLabelStep(flowTrace, stepFlowContext);
nextFlowStepIndex = flowStepIndex + 1;
break;
case EndFlowStep _:
nextFlowStepIndex = int.MaxValue;
break;
default:
throw new FlowException(
$"Unexpected flow activityFlowStep type {flowStep.GetType().FullName}");
}
return(nextFlowStepIndex);
}
