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361 lines (252 loc) · 9.93 KB
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# coding=utf-8
# Copyright 2025 Optuna, Hugging Face
#
# 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.
"""Logging utilities."""
import logging
import os
import sys
import threading
from logging import (
CRITICAL, # NOQA
DEBUG, # NOQA
ERROR, # NOQA
FATAL, # NOQA
INFO, # NOQA
NOTSET, # NOQA
WARN, # NOQA
WARNING, # NOQA
)
from tqdm import auto as tqdm_lib
from .distributed_utils import is_torch_dist_rank_zero
_lock = threading.Lock()
_default_handler: logging.Handler | None = None
log_levels = {
"debug": logging.DEBUG,
"info": logging.INFO,
"warning": logging.WARNING,
"error": logging.ERROR,
"critical": logging.CRITICAL,
}
_default_log_level = logging.WARNING
_tqdm_active = True
_rank_zero_filter = None
class _RankZeroFilter(logging.Filter):
def filter(self, record):
# Always allow rank-zero logs, but keep debug-level messages from all ranks for troubleshooting.
return is_torch_dist_rank_zero() or record.levelno <= logging.DEBUG
def _ensure_rank_zero_filter(logger: logging.Logger) -> None:
global _rank_zero_filter
if _rank_zero_filter is None:
_rank_zero_filter = _RankZeroFilter()
if not any(isinstance(f, _RankZeroFilter) for f in logger.filters):
logger.addFilter(_rank_zero_filter)
def _get_default_logging_level() -> int:
"""
If DIFFUSERS_VERBOSITY env var is set to one of the valid choices return that as the new default level. If it is
not - fall back to `_default_log_level`
"""
env_level_str = os.getenv("DIFFUSERS_VERBOSITY", None)
if env_level_str:
if env_level_str in log_levels:
return log_levels[env_level_str]
else:
logging.getLogger().warning(
f"Unknown option DIFFUSERS_VERBOSITY={env_level_str}, has to be one of: {', '.join(log_levels.keys())}"
)
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:
global _default_handler
with _lock:
if _default_handler:
# This library has already configured the library root logger.
return
_default_handler = logging.StreamHandler() # Set sys.stderr as stream.
if sys.stderr: # only if sys.stderr exists, e.g. when not using pythonw in windows
_default_handler.flush = sys.stderr.flush
# Apply our default configuration to the library root logger.
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
_ensure_rank_zero_filter(library_root_logger)
def _reset_library_root_logger() -> None:
global _default_handler
with _lock:
if not _default_handler:
return
library_root_logger = _get_library_root_logger()
library_root_logger.removeHandler(_default_handler)
library_root_logger.setLevel(logging.NOTSET)
_default_handler = None
def get_log_levels_dict() -> dict[str, int]:
return log_levels
def get_logger(name: str | None = None) -> logging.Logger:
"""
Return a logger with the specified name.
This function is not supposed to be directly accessed unless you are writing a custom diffusers module.
"""
if name is None:
name = _get_library_name()
_configure_library_root_logger()
logger = logging.getLogger(name)
_ensure_rank_zero_filter(logger)
return logger
def get_verbosity() -> int:
"""
Return the current level for the 🤗 Diffusers' root logger as an `int`.
Returns:
`int`:
Logging level integers which can be one of:
- `50`: `diffusers.logging.CRITICAL` or `diffusers.logging.FATAL`
- `40`: `diffusers.logging.ERROR`
- `30`: `diffusers.logging.WARNING` or `diffusers.logging.WARN`
- `20`: `diffusers.logging.INFO`
- `10`: `diffusers.logging.DEBUG`
"""
_configure_library_root_logger()
return _get_library_root_logger().getEffectiveLevel()
def set_verbosity(verbosity: int) -> None:
"""
Set the verbosity level for the 🤗 Diffusers' root logger.
Args:
verbosity (`int`):
Logging level which can be one of:
- `diffusers.logging.CRITICAL` or `diffusers.logging.FATAL`
- `diffusers.logging.ERROR`
- `diffusers.logging.WARNING` or `diffusers.logging.WARN`
- `diffusers.logging.INFO`
- `diffusers.logging.DEBUG`
"""
_configure_library_root_logger()
_get_library_root_logger().setLevel(verbosity)
def set_verbosity_info() -> None:
"""Set the verbosity to the `INFO` level."""
return set_verbosity(INFO)
def set_verbosity_warning() -> None:
"""Set the verbosity to the `WARNING` level."""
return set_verbosity(WARNING)
def set_verbosity_debug() -> None:
"""Set the verbosity to the `DEBUG` level."""
return set_verbosity(DEBUG)
def set_verbosity_error() -> None:
"""Set the verbosity to the `ERROR` level."""
return set_verbosity(ERROR)
def disable_default_handler() -> None:
"""Disable the default handler of the 🤗 Diffusers' root logger."""
_configure_library_root_logger()
assert _default_handler is not None
_get_library_root_logger().removeHandler(_default_handler)
def enable_default_handler() -> None:
"""Enable the default handler of the 🤗 Diffusers' root logger."""
_configure_library_root_logger()
assert _default_handler is not None
_get_library_root_logger().addHandler(_default_handler)
def add_handler(handler: logging.Handler) -> None:
"""adds a handler to the HuggingFace Diffusers' root logger."""
_configure_library_root_logger()
assert handler is not None
_get_library_root_logger().addHandler(handler)
def remove_handler(handler: logging.Handler) -> None:
"""removes given handler from the HuggingFace Diffusers' root logger."""
_configure_library_root_logger()
assert handler is not None and handler in _get_library_root_logger().handlers
_get_library_root_logger().removeHandler(handler)
def disable_propagation() -> None:
"""
Disable propagation of the library log outputs. Note that log propagation is disabled by default.
"""
_configure_library_root_logger()
_get_library_root_logger().propagate = False
def enable_propagation() -> None:
"""
Enable propagation of the library log outputs. Please disable the HuggingFace Diffusers' default handler to prevent
double logging if the root logger has been configured.
"""
_configure_library_root_logger()
_get_library_root_logger().propagate = True
def enable_explicit_format() -> None:
"""
Enable explicit formatting for every 🤗 Diffusers' logger. The explicit formatter is as follows:
```
[LEVELNAME|FILENAME|LINE NUMBER] TIME >> MESSAGE
```
All handlers currently bound to the root logger are affected by this method.
"""
handlers = _get_library_root_logger().handlers
for handler in handlers:
formatter = logging.Formatter("[%(levelname)s|%(filename)s:%(lineno)s] %(asctime)s >> %(message)s")
handler.setFormatter(formatter)
def reset_format() -> None:
"""
Resets the formatting for 🤗 Diffusers' loggers.
All handlers currently bound to the root logger are affected by this method.
"""
handlers = _get_library_root_logger().handlers
for handler in handlers:
handler.setFormatter(None)
def warning_advice(self, *args, **kwargs) -> None:
"""
This method is identical to `logger.warning()`, but if env var DIFFUSERS_NO_ADVISORY_WARNINGS=1 is set, this
warning will not be printed
"""
no_advisory_warnings = os.getenv("DIFFUSERS_NO_ADVISORY_WARNINGS", False)
if no_advisory_warnings:
return
self.warning(*args, **kwargs)
logging.Logger.warning_advice = warning_advice
class EmptyTqdm:
"""Dummy tqdm which doesn't do anything."""
def __init__(self, *args, **kwargs): # pylint: disable=unused-argument
self._iterator = args[0] if args else None
def __iter__(self):
return iter(self._iterator)
def __getattr__(self, _):
"""Return empty function."""
def empty_fn(*args, **kwargs): # pylint: disable=unused-argument
return
return empty_fn
def __enter__(self):
return self
def __exit__(self, type_, value, traceback):
return
class _tqdm_cls:
def __call__(self, *args, **kwargs):
if _tqdm_active:
return tqdm_lib.tqdm(*args, **kwargs)
else:
return EmptyTqdm(*args, **kwargs)
def set_lock(self, *args, **kwargs):
self._lock = None
if _tqdm_active:
return tqdm_lib.tqdm.set_lock(*args, **kwargs)
def get_lock(self):
if _tqdm_active:
return tqdm_lib.tqdm.get_lock()
tqdm = _tqdm_cls()
def is_progress_bar_enabled() -> bool:
"""Return a boolean indicating whether tqdm progress bars are enabled."""
global _tqdm_active
return bool(_tqdm_active)
def enable_progress_bar() -> None:
"""Enable tqdm progress bar."""
global _tqdm_active
_tqdm_active = True
def disable_progress_bar() -> None:
"""Disable tqdm progress bar."""
global _tqdm_active
_tqdm_active = False
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