We have seen how you design a workflow and how the domain model keeps it strictly type-safe. Today, we are peeling back the most complex layer of Vyshyvanka: The Execution Pipeline. This is where the graph you drew in the browser becomes a series of actual operations executing on the server.
From Graph to Execution
When you hit 'Run', the engine doesn't just start running nodes randomly. It first performs a topological sort on your directed graph using BuildExecutionLevels. This groups nodes into execution levels - nodes at the same level have no dependencies on each other and can run in parallel, while each level depends only on previous levels.
If Node B needs the output of Node A, the topological sort guarantees Node A finishes first. If there's a circular dependency in your graph, our validator catches it before it ever hits the engine.
The Life Cycle of an Execution
