def is_yaml_nlu_file(filename: Text) -> bool:
"""Checks if the specified file possibly contains NLU training data in YAML.
Args:
filename: name of the file to check.
Returns:
`True` if the `filename` is possibly a valid YAML NLU file,
`False` otherwise.
"""
if not data.is_likely_yaml_file(filename):
return False
try:
content = io_utils.read_yaml_file(filename)
return any(key in content for key in {KEY_NLU, KEY_RESPONSES})
except (YAMLError, Warning) as e:
logger.error(
f"Tried to check if '{filename}' is an NLU file, but failed to "
f"read it. If this file contains NLU data, you should "
f"investigate this error, otherwise it is probably best to "
f"move the file to a different location. "
f"Error: {e}")
return False
def persist_nlg(self, filename: Text) -> None:
if data.is_likely_yaml_file(filename):
rasa.nlu.utils.write_to_file(filename, self.nlg_as_yaml())
elif data.is_likely_markdown_file(filename):
nlg_serialized_data = self.nlg_as_markdown()
if nlg_serialized_data:
rasa.nlu.utils.write_to_file(filename, nlg_serialized_data)
else:
ValueError(
"Unsupported file format detected. Supported file formats are 'md' "
"and 'yml'.")
def persist_nlu(self, filename: Text = DEFAULT_TRAINING_DATA_OUTPUT_PATH) -> None:
if data.is_likely_json_file(filename):
rasa.nlu.utils.write_to_file(filename, self.nlu_as_json(indent=2))
elif data.is_likely_markdown_file(filename):
rasa.nlu.utils.write_to_file(filename, self.nlu_as_markdown())
elif data.is_likely_yaml_file(filename):
rasa.nlu.utils.write_to_file(filename, self.nlu_as_yaml())
else:
ValueError(
"Unsupported file format detected. Supported file formats are 'json' "
"and 'md'."
)
def _get_reader(
filename: Text,
domain: Domain,
template_variables: Optional[Dict] = None,
use_e2e: bool = False,
) -> StoryReader:
if data.is_likely_markdown_file(filename):
return MarkdownStoryReader(domain, template_variables, use_e2e,
filename)
elif data.is_likely_yaml_file(filename):
return YAMLStoryReader(domain, template_variables, use_e2e, filename)
else:
# This is a use case for uploading the story over REST API.
# The source file has a random name.
return _guess_reader(filename, domain, template_variables, use_e2e)
def is_domain_file(filename: Text) -> bool:
"""Checks whether the given file path is a Rasa domain file.
Args:
filename: Path of the file which should be checked.
Returns:
`True` if it's a domain file, otherwise `False`.
"""
from rasa.data import is_likely_yaml_file
if not is_likely_yaml_file(filename):
return False
try:
content = rasa.utils.io.read_yaml_file(filename)
if any(key in content for key in ALL_DOMAIN_KEYS):
return True
except YAMLError:
pass
return False
def test_is_yaml_file(path, is_yaml):
assert data.is_likely_yaml_file(path) == is_yaml
