def separate_intent_response_key(
original_intent: Text, ) -> Tuple[Text, Optional[Text]]:
split_title = original_intent.split(RESPONSE_IDENTIFIER_DELIMITER)
if len(split_title) == 2:
return split_title[0], split_title[1]
elif len(split_title) == 1:
return split_title[0], None
raise RasaException(
f"Intent name '{original_intent}' is invalid, "
f"it cannot contain more than one '{RESPONSE_IDENTIFIER_DELIMITER}'."
)
def _validate_model_files_exist(model_directory: Text) -> None:
"""Check if essential model files exist inside the model_directory.
Args:
model_directory: Directory to investigate
"""
files_to_check = [
os.path.join(model_directory, "saved_model.pb"),
os.path.join(model_directory, "variables/variables.index"),
os.path.join(model_directory, "variables/variables.data-00001-of-00002"),
os.path.join(model_directory, "variables/variables.data-00000-of-00002"),
]
for file_path in files_to_check:
if not os.path.exists(file_path):
raise RasaException(
f"""File {file_path} does not exist.
Re-check the files inside the directory {model_directory}.
It should contain the following model
files - [{", ".join(files_to_check)}]"""
)
def _get_validated_model_url(self) -> Text:
"""Validates the specified `model_url` parameter.
The `model_url` parameter cannot be left empty. It can either
be set to a remote URL where the model is hosted or it can be
a path to a local directory.
Returns:
Validated path to model
"""
model_url = self.component_config.get("model_url", None)
if not model_url:
raise RasaException(
f"Parameter 'model_url' was not specified in the configuration "
f"of '{ConveRTFeaturizer.__name__}'. "
f"It is mandatory to pass a value for this parameter. "
f"You can either use a community hosted URL of the model "
f"or if you have a local copy of the model, pass the "
f"path to the directory containing the model files.")
if model_url == ORIGINAL_TF_HUB_MODULE_URL:
# Can't use the originally hosted URL
raise RasaException(
f"Parameter 'model_url' of '{ConveRTFeaturizer.__name__}' was "
f"set to '{model_url}' which does not contain the model any longer. "
f"You can either use a community hosted URL or if you have a "
f"local copy of the model, pass the path to the directory "
f"containing the model files.")
if model_url == RESTRICTED_ACCESS_URL:
# Can't use the URL that is reserved for tests only
raise RasaException(
f"Parameter 'model_url' of '{ConveRTFeaturizer.__name__}' was "
f"set to '{model_url}' which is strictly reserved for pytests of "
f"Rasa Open Source only. Due to licensing issues you are "
f"not allowed to use the model from this URL. "
f"You can either use a community hosted URL or if you have a "
f"local copy of the model, pass the path to the directory "
f"containing the model files.")
if os.path.isfile(model_url):
# Definitely invalid since the specified path should be a directory
raise RasaException(
f"Parameter 'model_url' of '{ConveRTFeaturizer.__name__}' was "
f"set to the path of a file which is invalid. You "
f"can either use a community hosted URL or if you have a "
f"local copy of the model, pass the path to the directory "
f"containing the model files.")
if rasa.nlu.utils.is_url(model_url):
return model_url
if os.path.isdir(model_url):
# Looks like a local directory. Inspect the directory
# to see if model files exist.
self._validate_model_files_exist(model_url)
# Convert the path to an absolute one since
# TFHUB doesn't like relative paths
return os.path.abspath(model_url)
raise RasaException(
f"{model_url} is neither a valid remote URL nor a local directory. "
f"You can either use a community hosted URL or if you have a "
f"local copy of the model, pass the path to "
f"the directory containing the model files.")