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# See the NOTICE file distributed with this work for additional information regarding
# copyright ownership.  The Modin Development Team licenses this file to you under the
# Apache License, Version 2.0 (the "License"); you may not use this file except in
# compliance with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed under
# the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
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"""Module chooses a proper worker class."""
import warnings

try:
    # Try to use PyHDK by default
    from .hdk_worker import HdkWorker as DbWorker
except ModuleNotFoundError:  # fallback to pyomniscidbe package
    from .omnisci_worker import OmnisciWorker as DbWorker

    warnings.warn(
        "The OmniSci backend has been deprecated. "
        + 'Please use `StorageFormat.put("hdk")` or `MODIN_STORAGE_FORMAT="hdk"` instead.'
    )

__all__ = ["DbWorker"]
