mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 16:26:10 +03:00
137 lines
3.9 KiB
Python
137 lines
3.9 KiB
Python
# Copyright 2014 The Chromium Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
import contextlib
|
|
import logging
|
|
import os
|
|
|
|
from pylib.constants import host_paths
|
|
|
|
_COLORAMA_PATH = os.path.join(
|
|
host_paths.DIR_SOURCE_ROOT, 'third_party', 'colorama', 'src')
|
|
|
|
with host_paths.SysPath(_COLORAMA_PATH, position=0):
|
|
import colorama
|
|
|
|
BACK = colorama.Back
|
|
FORE = colorama.Fore
|
|
STYLE = colorama.Style
|
|
|
|
|
|
class _ColorFormatter(logging.Formatter):
|
|
# pylint does not see members added dynamically in the constructor.
|
|
# pylint: disable=no-member
|
|
color_map = {
|
|
logging.DEBUG: (FORE.CYAN),
|
|
logging.WARNING: (FORE.YELLOW),
|
|
logging.ERROR: (FORE.RED),
|
|
logging.CRITICAL: (BACK.RED),
|
|
}
|
|
|
|
def __init__(self, wrapped_formatter=None):
|
|
"""Wraps a |logging.Formatter| and adds color."""
|
|
super(_ColorFormatter, self).__init__(self)
|
|
self._wrapped_formatter = wrapped_formatter or logging.Formatter()
|
|
|
|
#override
|
|
def format(self, record):
|
|
message = self._wrapped_formatter.format(record)
|
|
return self.Colorize(message, record.levelno)
|
|
|
|
def Colorize(self, message, log_level):
|
|
try:
|
|
return (''.join(self.color_map[log_level]) + message +
|
|
colorama.Style.RESET_ALL)
|
|
except KeyError:
|
|
return message
|
|
|
|
|
|
class ColorStreamHandler(logging.StreamHandler):
|
|
"""Handler that can be used to colorize logging output.
|
|
|
|
Example using a specific logger:
|
|
|
|
logger = logging.getLogger('my_logger')
|
|
logger.addHandler(ColorStreamHandler())
|
|
logger.info('message')
|
|
|
|
Example using the root logger:
|
|
|
|
ColorStreamHandler.MakeDefault()
|
|
logging.info('message')
|
|
|
|
"""
|
|
def __init__(self, force_color=False):
|
|
super(ColorStreamHandler, self).__init__()
|
|
self.force_color = force_color
|
|
self.setFormatter(logging.Formatter())
|
|
|
|
@property
|
|
def is_tty(self):
|
|
isatty = getattr(self.stream, 'isatty', None)
|
|
return isatty and isatty()
|
|
|
|
#override
|
|
def setFormatter(self, formatter):
|
|
if self.force_color or self.is_tty:
|
|
formatter = _ColorFormatter(formatter)
|
|
super(ColorStreamHandler, self).setFormatter(formatter)
|
|
|
|
@staticmethod
|
|
def MakeDefault(force_color=False):
|
|
"""
|
|
Replaces the default logging handlers with a coloring handler. To use
|
|
a colorizing handler at the same time as others, either register them
|
|
after this call, or add the ColorStreamHandler on the logger using
|
|
Logger.addHandler()
|
|
|
|
Args:
|
|
force_color: Set to True to bypass the tty check and always colorize.
|
|
"""
|
|
# If the existing handlers aren't removed, messages are duplicated
|
|
logging.getLogger().handlers = []
|
|
logging.getLogger().addHandler(ColorStreamHandler(force_color))
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def OverrideColor(level, color):
|
|
"""Temporarily override the logging color for a specified level.
|
|
|
|
Args:
|
|
level: logging level whose color gets overridden.
|
|
color: tuple of formats to apply to log lines.
|
|
"""
|
|
prev_colors = {}
|
|
for handler in logging.getLogger().handlers:
|
|
if isinstance(handler.formatter, _ColorFormatter):
|
|
prev_colors[handler.formatter] = handler.formatter.color_map[level]
|
|
handler.formatter.color_map[level] = color
|
|
try:
|
|
yield
|
|
finally:
|
|
for formatter, prev_color in prev_colors.iteritems():
|
|
formatter.color_map[level] = prev_color
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def SuppressLogging(level=logging.ERROR):
|
|
"""Momentarilly suppress logging events from all loggers.
|
|
|
|
TODO(jbudorick): This is not thread safe. Log events from other threads might
|
|
also inadvertently disappear.
|
|
|
|
Example:
|
|
|
|
with logging_utils.SuppressLogging():
|
|
# all but CRITICAL logging messages are suppressed
|
|
logging.info('just doing some thing') # not shown
|
|
logging.critical('something really bad happened') # still shown
|
|
|
|
Args:
|
|
level: logging events with this or lower levels are suppressed.
|
|
"""
|
|
logging.disable(level)
|
|
yield
|
|
logging.disable(logging.NOTSET)
|