Version: 3.x

rasa.engine.runner.interface

GraphRunner Objects

class GraphRunner(ABC)

A GraphRunner is responsible for running a GraphSchema.

create

@classmethod
@abstractmethod
def create(cls,
graph_schema: GraphSchema,
model_storage: ModelStorage,
execution_context: ExecutionContext,
hooks: Optional[List[GraphNodeHook]] = None) -> GraphRunner

Creates a new instance of a GraphRunner.

Arguments:

  • graph_schema - The graph schema that will be instantiated and run.
  • model_storage - Storage which graph components can use to persist and load themselves.
  • execution_context - Context that will be passed to every GraphComponent.
  • hooks - These are called before and after the execution of each node.
  • Returns - Instantiated GraphRunner

run

@abstractmethod
def run(inputs: Optional[Dict[Text, Any]] = None,
targets: Optional[List[Text]] = None) -> Dict[Text, Any]

Runs the instantiated graph with the given inputs and targets.

Arguments:

  • inputs - Input nodes to be added to the graph. These can be referenced by name in the "needs" key of a node in the schema.
  • targets - Nodes whose output is needed and must always run.
  • Returns - A mapping of target node name to output value.