Accessing metadata in preprocessing

hannah94 · March 25, 2021, 1:57pm

Is it possible to access custom metadata in the pre-processing/ custom component section?

I have a custom component that I need to add context to from the metadata , say for example I have a field in the metadata called “name_or_not” : True/False and I know this field is being passed through from my custom connector to my action server, so it’s definitely working. Now I want to preprocess the message differently depending on if the item is True or False.

I’m going on the assumption that it’s not possible based on this article

But I would appreciate the help! Thanks

hannah94 · March 25, 2021, 2:11pm

It would also be acceptable to have access to the tracker and receive the last question asked from there, so if Rasa bot asks “What is your name?” I can follow the logic as if the metadata said True. But I’m hoping to have either metadata or tracker events here.

EDIT: never mind I would need the sender ID to access the tracker store which is stored as metadata.

hannah94 · March 25, 2021, 2:40pm

Maybe I can overwrite the Message class so that when the Component receives the Message it has an attribute message.metadata , is that possible?

github.com

RasaHQ/rasa/blob/74ce55924e820be3cd81fcc105ed4ba6b7225df4/rasa/shared/nlu/training_data/message.py#L30


    FEATURE_TYPE_SEQUENCE,
    ACTION_TEXT,
    ACTION_NAME,
)
from rasa.shared.constants import DIAGNOSTIC_DATA

if typing.TYPE_CHECKING:
    from rasa.shared.nlu.training_data.features import Features


class Message:
    def __init__(
        self,
        data: Optional[Dict[Text, Any]] = None,
        output_properties: Optional[Set] = None,
        time: Optional[int] = None,
        features: Optional[List["Features"]] = None,
        **kwargs: Any,
    ) -> None:
        self.time = time
        self.data = data.copy() if data else {}

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Accessing metadata in preprocessing

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