private async Task PulseToParentWorkflow(WorkflowContext workflowContext, WorkflowHierarchyEventType hierarchyEventType, string code, CancellationToken cancellationToken = default)
{
Guard.ArgumentNotNullOrEmpty(code, nameof(code));
if (workflowContext.WorkflowInstance.Id == workflowContext.WorkflowInstance.ParentWorkflowInstanceId)
{
return;
}
var parentWorkflowInstance = await GetWorkflowInstanceWithNoLock(workflowContext.WorkflowInstance.ParentWorkflowInstanceId, cancellationToken).ConfigureAwait(false);
Guard.ArgumentNotNull(parentWorkflowInstance, nameof(parentWorkflowInstance));
// [Assumption #1] Failed event should be propagated with no additional checks for validity
if (hierarchyEventType == WorkflowHierarchyEventType.Failed)
{
var parentToNestedFailedEvent = new NestedToParentEvent(code, hierarchyEventType, parentWorkflowInstance.ParentWorkflowInstanceId, workflowContext.WorkflowInstance.Id);
await((IWorkflowEngine)this).ProcessEvent(parentWorkflowInstance.WorkflowId, parentToNestedFailedEvent, cancellationToken);
return;
}
// [Assumption #2] Parent workflow instance must be in [AwaitingEvent] state for application scope events to pass through
if (parentWorkflowInstance.CurrentStateProgress != StateExecutionProgress.AwaitingEvent)
{
throw new WorkflowException(string.Format(CultureInfo.InvariantCulture,
"Parent Workflow instance [ID={0:D}] must be waiting for an event from nested workflow instance [ID={1:D}], but it is in [State={2}..{3:G}]",
parentWorkflowInstance.Id, workflowContext.WorkflowInstance.Id, parentWorkflowInstance.CurrentStateCode,
parentWorkflowInstance.CurrentStateProgress));
}
var nestedToParentEvent = new NestedToParentEvent(code, hierarchyEventType, parentWorkflowInstance.ParentWorkflowInstanceId, workflowContext.WorkflowInstance.Id);
await((IWorkflowEngine)this).ProcessEvent(parentWorkflowInstance.WorkflowId, nestedToParentEvent, cancellationToken).ConfigureAwait(false);
}
public NestedToParentEvent(string code, WorkflowHierarchyEventType hierarchyEventType, Guid workflowInstanceId, Guid nestedWorkflowInstanceId)
{
Guard.ArgumentNotNull(code, nameof(code));
Code = code;
HierarchyEventType = hierarchyEventType;
WorkflowInstanceId = workflowInstanceId;
NestedWorkflowInstanceId = nestedWorkflowInstanceId;
}
public ParentToNestedEntityEvent(string code, WorkflowHierarchyEventType hierarchyEventType,
Guid rootWorkflowInstanceId, Guid parentWorkflowInstanceId, Guid workflowInstanceId, IEntity nestedEntity)
{
Guard.ArgumentNotNull(code, nameof(code));
Code = code;
Entity = nestedEntity;
HierarchyEventType = hierarchyEventType;
ParentWorkflowInstanceId = parentWorkflowInstanceId;
RootWorkflowInstanceId = rootWorkflowInstanceId;
WorkflowInstanceId = workflowInstanceId;
}
