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from apache_beam.options import pipeline_options
[docs]class YamlOptions(pipeline_options.PipelineOptions):
@classmethod
def _add_argparse_args(cls, parser):
parser.add_argument(
'--yaml_experimental_features',
dest='yaml_experimental_features',
action='append',
default=[],
help=('Enable yaml features ahead of them being declared stable.'))
[docs] @classmethod
def check_enabled(cls, pipeline, feature, description=None):
if feature not in pipeline._options.view_as(cls).yaml_experimental_features:
raise ValueError(
f'{description or feature} unsupported because '
f'{feature} is not set in --yaml_experimental_features option.')