Workflow Orchestration Generator

The Workflow Orchestration generator creates a strongly typed factory from a partial host type and annotated workflow methods.

using PatternKit.Generators.WorkflowOrchestration;

[WorkflowOrchestration(FactoryMethodName = "CreateGenerated", WorkflowName = "fulfillment-orchestration")]
public static partial class GeneratedFulfillmentWorkflow
{
    [WorkflowStep("reserve-inventory", 1, Compensation = nameof(ReleaseInventory))]
    private static ValueTask ReserveInventory(FulfillmentContext context, CancellationToken cancellationToken)
        => ValueTask.CompletedTask;

    [WorkflowStep("capture-payment", 2, MaxAttempts = 2)]
    private static ValueTask CapturePayment(FulfillmentContext context, CancellationToken cancellationToken)
        => ValueTask.CompletedTask;

    private static ValueTask ReleaseInventory(FulfillmentContext context, CancellationToken cancellationToken)
        => ValueTask.CompletedTask;
}

Generated output:

WorkflowOrchestrator<FulfillmentContext> workflow = GeneratedFulfillmentWorkflow.CreateGenerated();

Step methods must accept (TContext, CancellationToken) and return ValueTask. Optional condition methods accept TContext and return bool. Optional compensation methods use the same signature as a step.

Diagnostics

• PKWO001: the workflow host type must be partial.
• PKWO002: the workflow must declare at least one [WorkflowStep] method.
• PKWO003: step, condition, or compensation method signatures are invalid.
• PKWO004: workflow step names or orders are duplicated.
• PKWO005: FactoryMethodName and WorkflowName must be non-empty.