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import logging
import sys
from leap.bitmask.logs import LOG_FORMAT
from leap.bitmask.logs.log_silencer import SelectiveSilencerFilter
from leap.bitmask.logs.leap_log_handler import LeapLogHandler
from leap.bitmask.logs.streamtologger import StreamToLogger
from leap.bitmask.platform_init import IS_WIN
def create_logger(debug=False, logfile=None, replace_stdout=True):
"""
Create the logger and attach the handlers.
:param debug: the level of the messages that we should log
:type debug: bool
:param logfile: the file name of where we should to save the logs
:type logfile: str
:return: the new logger with the attached handlers.
:rtype: logging.Logger
"""
# TODO: get severity from command line args
if debug:
level = logging.DEBUG
else:
level = logging.WARNING
# Create logger and formatter
logger = logging.getLogger(name='leap')
logger.setLevel(level)
formatter = logging.Formatter(LOG_FORMAT)
# Console handler
try:
import coloredlogs
console = coloredlogs.ColoredStreamHandler(level=level)
except ImportError:
console = logging.StreamHandler()
console.setLevel(level)
console.setFormatter(formatter)
using_coloredlog = False
else:
using_coloredlog = True
if using_coloredlog:
replace_stdout = False
silencer = SelectiveSilencerFilter()
console.addFilter(silencer)
logger.addHandler(console)
logger.debug('Console handler plugged!')
# LEAP custom handler
leap_handler = LeapLogHandler()
leap_handler.setLevel(level)
leap_handler.addFilter(silencer)
logger.addHandler(leap_handler)
logger.debug('Leap handler plugged!')
# File handler
if logfile is not None:
logger.debug('Setting logfile to %s ', logfile)
fileh = logging.FileHandler(logfile)
fileh.setLevel(logging.DEBUG)
fileh.setFormatter(formatter)
fileh.addFilter(silencer)
logger.addHandler(fileh)
logger.debug('File handler plugged!')
if replace_stdout:
replace_stdout_stderr_with_logging(logger)
return logger
def replace_stdout_stderr_with_logging(logger):
"""
Replace:
- the standard output
- the standard error
- the twisted log output
with a custom one that writes to the logger.
"""
# Disabling this on windows since it breaks ALL THE THINGS
# The issue for this is #4149
if not IS_WIN:
sys.stdout = StreamToLogger(logger, logging.DEBUG)
sys.stderr = StreamToLogger(logger, logging.ERROR)
# Replace twisted's logger to use our custom output.
from twisted.python import log
log.startLogging(sys.stdout)
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