def load_component(self, component_meta: Dict[Text, Any], model_dir: Text,
model_metadata: "Metadata",
**context: Any) -> Component:
"""Tries to retrieve a component from the cache, else calls
``load`` to create a new component.
Args:
component_meta:
the metadata of the component to load in the pipeline
model_dir:
the directory to read the model from
model_metadata (Metadata):
the model's :class:`rasa.nlu.model.Metadata`
Returns:
Component: the loaded component.
"""
from rasa.nlu import registry
try:
cached_component, cache_key = self.__get_cached_component(
component_meta, model_metadata)
component = registry.load_component_by_meta(
component_meta, model_dir, model_metadata, cached_component,
**context)
if not cached_component:
# If the component wasn't in the cache,
# let us add it if possible
self.__add_to_cache(component, cache_key)
return component
except MissingArgumentError as e: # pragma: no cover
raise Exception("Failed to load component from file `{}`. "
"{}".format(component_meta.get("file"), e))
def load_component(
self,
component_meta: Dict[Text, Any],
model_dir: Text,
model_metadata: "Metadata",
**context: Any,
) -> Optional[Component]:
"""Loads a component.
Tries to retrieve a component from the cache, else calls
``load`` to create a new component.
Args:
component_meta:
The metadata of the component to load in the pipeline.
model_dir:
The directory to read the model from.
model_metadata (Metadata):
The model's :class:`rasa.nlu.model.Metadata`.
Returns:
The loaded component.
"""
from rasa.nlu import registry
try:
cached_component, cache_key = self.__get_cached_component(
component_meta, model_metadata)
component = registry.load_component_by_meta(
component_meta, model_dir, model_metadata, cached_component,
**context)
if not cached_component:
# If the component wasn't in the cache,
# let us add it if possible
self.__add_to_cache(component, cache_key)
return component
except MissingArgumentError as e: # pragma: no cover
raise RasaException(
f"Failed to load component from file '{component_meta.get('file')}'. "
f"Error: {e}")
