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66 lines
2.5 KiB
Python
66 lines
2.5 KiB
Python
# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
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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 os
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import sys
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import logging
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import functools
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import paddle.distributed as dist
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logger_initialized = {}
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@functools.lru_cache()
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def get_logger(name='srnet', log_file=None, log_level=logging.INFO):
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"""Initialize and get a logger by name.
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If the logger has not been initialized, this method will initialize the
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logger by adding one or two handlers, otherwise the initialized logger will
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be directly returned. During initialization, a StreamHandler will always be
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added. If `log_file` is specified a FileHandler will also be added.
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Args:
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name (str): Logger name.
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log_file (str | None): The log filename. If specified, a FileHandler
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will be added to the logger.
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log_level (int): The logger level. Note that only the process of
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rank 0 is affected, and other processes will set the level to
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"Error" thus be silent most of the time.
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Returns:
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logging.Logger: The expected logger.
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"""
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logger = logging.getLogger(name)
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if name in logger_initialized:
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return logger
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for logger_name in logger_initialized:
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if name.startswith(logger_name):
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return logger
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formatter = logging.Formatter(
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'[%(asctime)s] %(name)s %(levelname)s: %(message)s',
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datefmt="%Y/%m/%d %H:%M:%S")
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stream_handler = logging.StreamHandler(stream=sys.stdout)
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stream_handler.setFormatter(formatter)
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logger.addHandler(stream_handler)
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if log_file is not None and dist.get_rank() == 0:
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log_file_folder = os.path.split(log_file)[0]
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os.makedirs(log_file_folder, exist_ok=True)
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file_handler = logging.FileHandler(log_file, 'a')
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file_handler.setFormatter(formatter)
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logger.addHandler(file_handler)
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if dist.get_rank() == 0:
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logger.setLevel(log_level)
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else:
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logger.setLevel(logging.ERROR)
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logger_initialized[name] = True
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return logger
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