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# Copyright 2022 MosaicML LLM Foundry authors
# SPDX-License-Identifier: Apache-2.0

"""Deprecated Generate callback.

Please use composer.callbacks.Generate instead.
"""
import warnings
from typing import Any, List, Union

from composer.callbacks import Generate as ComposerGenerate
from transformers import PreTrainedTokenizer, PreTrainedTokenizerFast

Tokenizer = Union[PreTrainedTokenizer, PreTrainedTokenizerFast]


class Generate(ComposerGenerate):

    def __init__(self, prompts: List[str], batch_log_interval: int,
                 **kwargs: Any):

        warnings.warn(
            ('Accessing llmfoundry.callbacks.generate_callback.Generate '
             'is deprecated and will be removed in a future release. '
             'Please use composer.callbacks.Generate instead.'),
            DeprecationWarning,
        )

        interval = f'{batch_log_interval}ba'
        super().__init__(prompts=prompts, interval=interval, **kwargs)