mirror of
https://github.com/hiyouga/LlamaFactory.git
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124 lines
3.9 KiB
Python
124 lines
3.9 KiB
Python
# Copyright 2025 Optuna, HuggingFace Inc. and the LlamaFactory team.
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#
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# This code is inspired by the HuggingFace's transformers library.
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# https://github.com/huggingface/transformers/blob/v5.0.0rc0/src/transformers/utils/logging.py
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import os
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import sys
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import threading
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from functools import lru_cache
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from typing import Optional
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_thread_lock = threading.RLock()
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_default_handler: Optional["logging.Handler"] = None
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_default_log_level: "logging._Level" = logging.INFO
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class _Logger(logging.Logger):
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"""A logger that supports rank0 logging."""
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def info_rank0(self, *args, **kwargs) -> None:
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self.info(*args, **kwargs)
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def warning_rank0(self, *args, **kwargs) -> None:
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self.warning(*args, **kwargs)
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def warning_rank0_once(self, *args, **kwargs) -> None:
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self.warning(*args, **kwargs)
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def _get_default_logging_level() -> "logging._Level":
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"""Return the default logging level."""
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env_level_str = os.getenv("LLAMAFACTORY_VERBOSITY", None)
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if env_level_str:
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if env_level_str.upper() in logging._nameToLevel:
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return logging._nameToLevel[env_level_str.upper()]
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else:
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raise ValueError(f"Unknown logging level: {env_level_str}.")
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return _default_log_level
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def _get_library_name() -> str:
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return __name__.split(".")[0]
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def _get_library_root_logger() -> "_Logger":
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return logging.getLogger(_get_library_name())
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def _configure_library_root_logger() -> None:
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"""Configure root logger using a stdout stream handler with an explicit format."""
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global _default_handler
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with _thread_lock:
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if _default_handler: # already configured
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return
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formatter = logging.Formatter(
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fmt="[%(levelname)s|%(asctime)s] %(name)s:%(lineno)s >> %(message)s",
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datefmt="%Y-%m-%d %H:%M:%S",
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)
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_default_handler = logging.StreamHandler(sys.stdout)
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_default_handler.setFormatter(formatter)
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library_root_logger = _get_library_root_logger()
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library_root_logger.addHandler(_default_handler)
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library_root_logger.setLevel(_get_default_logging_level())
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library_root_logger.propagate = False
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def get_logger(name: Optional[str] = None) -> "_Logger":
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"""Return a logger with the specified name. It it not supposed to be accessed externally."""
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if name is None:
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name = _get_library_name()
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_configure_library_root_logger()
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return logging.getLogger(name)
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def add_handler(handler: "logging.Handler") -> None:
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"""Add a handler to the root logger."""
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_configure_library_root_logger()
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_get_library_root_logger().addHandler(handler)
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def remove_handler(handler: logging.Handler) -> None:
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"""Remove a handler to the root logger."""
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_configure_library_root_logger()
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_get_library_root_logger().removeHandler(handler)
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def info_rank0(self: "logging.Logger", *args, **kwargs) -> None:
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if int(os.getenv("LOCAL_RANK", "0")) == 0:
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self.info(*args, **kwargs)
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def warning_rank0(self: "logging.Logger", *args, **kwargs) -> None:
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if int(os.getenv("LOCAL_RANK", "0")) == 0:
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self.warning(*args, **kwargs)
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@lru_cache(None)
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def warning_rank0_once(self: "logging.Logger", *args, **kwargs) -> None:
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if int(os.getenv("LOCAL_RANK", "0")) == 0:
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self.warning(*args, **kwargs)
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logging.Logger.info_rank0 = info_rank0
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logging.Logger.warning_rank0 = warning_rank0
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logging.Logger.warning_rank0_once = warning_rank0_once
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