Best practices for using workflow events - how to have multiple events in the workfow handling the same event but different execution condition?

[weirdyang]

I'm using RabbitMQ events in OrchardCore Workflows. I want a single workflow to handle messages from multiple topics, but the WorkflowManager uses .First() which prevents some events from triggering:

Workflowmanager code:

 startActivity = workflowType.Activities.First(x => x.IsStart && x.Name == name);

My event task filters by topic in CanExecute():

public override bool CanExecute(WorkflowExecutionContext workflowContext, ActivityContext activityContext)
{
    return ValidateEventName(workflowContext);
}

private bool ValidateEventName(WorkflowExecutionContext workflowContext)
{
    if (workflowContext.Input is not null
        && workflowContext.Input.TryGetValue(RabbitMqEventBus.DEFAULT_INPUT_EVENT_NAME, out var topic)
        && !string.IsNullOrWhiteSpace(topic as string))
    {
        return Event.Equals(topic as string, StringComparison.InvariantCultureIgnoreCase);
    }
    return false;
}

Question: Should I create separate workflows per topic, or is there a pattern for handling multiples of the same event in one workflow?

[Piedone]

I think the assumption everywhere is that workflows have a single starting point. So, you'll need to create separate workflows, yes.

[weirdyang]

thanks, I'll let my users know.