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https://github.com/huchenlei/HandRefinerPortable.git
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101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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import logging
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import os
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import sys
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from logging import StreamHandler, Handler, getLevelName
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# this class is a copy of logging.FileHandler except we end self.close()
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# at the end of each emit. While closing file and reopening file after each
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# write is not efficient, it allows us to see partial logs when writing to
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# fused Azure blobs, which is very convenient
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class FileHandler(StreamHandler):
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"""
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A handler class which writes formatted logging records to disk files.
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"""
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def __init__(self, filename, mode='a', encoding=None, delay=False):
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"""
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Open the specified file and use it as the stream for logging.
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"""
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# Issue #27493: add support for Path objects to be passed in
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filename = os.fspath(filename)
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#keep the absolute path, otherwise derived classes which use this
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#may come a cropper when the current directory changes
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self.baseFilename = os.path.abspath(filename)
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self.mode = mode
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self.encoding = encoding
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self.delay = delay
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if delay:
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#We don't open the stream, but we still need to call the
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#Handler constructor to set level, formatter, lock etc.
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Handler.__init__(self)
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self.stream = None
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else:
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StreamHandler.__init__(self, self._open())
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def close(self):
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"""
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Closes the stream.
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"""
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self.acquire()
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try:
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try:
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if self.stream:
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try:
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self.flush()
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finally:
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stream = self.stream
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self.stream = None
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if hasattr(stream, "close"):
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stream.close()
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finally:
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# Issue #19523: call unconditionally to
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# prevent a handler leak when delay is set
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StreamHandler.close(self)
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finally:
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self.release()
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def _open(self):
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"""
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Open the current base file with the (original) mode and encoding.
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Return the resulting stream.
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"""
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return open(self.baseFilename, self.mode, encoding=self.encoding)
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def emit(self, record):
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"""
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Emit a record.
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If the stream was not opened because 'delay' was specified in the
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constructor, open it before calling the superclass's emit.
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"""
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if self.stream is None:
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self.stream = self._open()
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StreamHandler.emit(self, record)
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self.close()
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def __repr__(self):
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level = getLevelName(self.level)
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return '<%s %s (%s)>' % (self.__class__.__name__, self.baseFilename, level)
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def setup_logger(name, save_dir, distributed_rank, filename="log.txt"):
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logger = logging.getLogger(name)
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logger.setLevel(logging.DEBUG)
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# don't log results for the non-master process
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if distributed_rank > 0:
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return logger
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ch = logging.StreamHandler(stream=sys.stdout)
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ch.setLevel(logging.DEBUG)
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formatter = logging.Formatter("%(asctime)s %(name)s %(levelname)s: %(message)s")
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ch.setFormatter(formatter)
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logger.addHandler(ch)
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if save_dir:
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fh = FileHandler(os.path.join(save_dir, filename))
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fh.setLevel(logging.DEBUG)
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fh.setFormatter(formatter)
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logger.addHandler(fh)
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return logger
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