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# Copyright 2024 Optuna, HuggingFace Inc. and the LlamaFactory team.
#
# This code is inspired by the HuggingFace's transformers library.
# https://github.com/huggingface/transformers/blob/v4.40.0/src/transformers/utils/logging.py
#
# Licensed 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 ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import os
import sys
import threading
from concurrent.futures import ThreadPoolExecutor
from typing import Optional
from .constants import RUNNING_LOG
_thread_lock = threading.RLock()
_default_handler: Optional["logging.Handler"] = None
_default_log_level: "logging._Level" = logging.INFO
class LoggerHandler(logging.Handler):
r"""
Redirects the logging output to the logging file for LLaMA Board.
"""
def __init__(self, output_dir: str) -> None:
super().__init__()
formatter = logging.Formatter(
fmt="%(asctime)s - %(levelname)s - %(name)s - %(message)s", datefmt="%m/%d/%Y %H:%M:%S"
)
self.setLevel(logging.INFO)
self.setFormatter(formatter)
os.makedirs(output_dir, exist_ok=True)
self.running_log = os.path.join(output_dir, RUNNING_LOG)
if os.path.exists(self.running_log):
os.remove(self.running_log)
self.thread_pool = ThreadPoolExecutor(max_workers=1)
def _write_log(self, log_entry: str) -> None:
with open(self.running_log, "a", encoding="utf-8") as f:
f.write(log_entry + "\n\n")
def emit(self, record) -> None:
if record.name == "httpx":
return
log_entry = self.format(record)
self.thread_pool.submit(self._write_log, log_entry)
def close(self) -> None:
self.thread_pool.shutdown(wait=True)
return super().close()
def _get_default_logging_level() -> "logging._Level":
r"""
Returns the default logging level.
"""
env_level_str = os.environ.get("LLAMAFACTORY_VERBOSITY", None)
if env_level_str:
if env_level_str.upper() in logging._nameToLevel:
return logging._nameToLevel[env_level_str.upper()]
else:
raise ValueError("Unknown logging level: {}.".format(env_level_str))
return _default_log_level
def _get_library_name() -> str:
return __name__.split(".")[0]
def _get_library_root_logger() -> "logging.Logger":
return logging.getLogger(_get_library_name())
def _configure_library_root_logger() -> None:
r"""
Configures root logger using a stdout stream handler with an explicit format.
"""
global _default_handler
with _thread_lock:
if _default_handler:
return
formatter = logging.Formatter(
fmt="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
)
_default_handler = logging.StreamHandler(sys.stdout)
_default_handler.setFormatter(formatter)
library_root_logger = _get_library_root_logger()
library_root_logger.addHandler(_default_handler)
library_root_logger.setLevel(_get_default_logging_level())
library_root_logger.propagate = False
def get_logger(name: Optional[str] = None) -> "logging.Logger":
r"""
Returns a logger with the specified name. It it not supposed to be accessed externally.
"""
if name is None:
name = _get_library_name()
_configure_library_root_logger()
return logging.getLogger(name)
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