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Static Parallel Steps

Start a fixed set of distinct Step types concurrently.

Definition graph

StaticParallelStepsFlow

Valid

python · examples/python/dex_examples/patterns/parallel/static_parallel_steps_flow.py

InitStep returns one movement for WorkAStep and one for WorkBStep. Both are scheduled at the same time and complete independently. Use this shape when each branch has a known responsibility and input type.

Core implementation​

The starting Step returns both movements in one decision.

class WorkAStep(Step[str]):
    def execute(self, context: Context, input: str) -> StepDecision:
        return graceful_complete(f"A:{input}")


class WorkBStep(Step[str]):
    def execute(self, context: Context, input: str) -> StepDecision:
        return graceful_complete(f"B:{input}")


class InitStep(Step[str]):
    def execute(self, context: Context, input: str) -> StepDecision:
        return go_to_many(
            StepMovement.of(WorkAStep, input),
            StepMovement.of(WorkBStep, input),
        )

Example: examples/python/dex_examples/patterns/parallel/static_parallel_steps_flow.py