docklet/web/webViews/log.py

76 lines
2.6 KiB
Python

#!/usr/bin/env python
import logging
import logging.handlers
import argparse
import sys
import time # this is only being used as part of the example
import os
import os, sys, inspect
this_folder = os.path.realpath(os.path.abspath(os.path.split(inspect.getfile(inspect.currentframe()))[0]))
src_folder = os.path.realpath(os.path.abspath(os.path.join(this_folder,"../..", "src")))
if src_folder not in sys.path:
sys.path.insert(0, src_folder)
import env
# logger should only be imported after initlogging has been called
logger = None
def initlogging(name='docklet'):
# Deafults
global logger
homepath = env.getenv('FS_PREFIX')
LOG_FILENAME = homepath + '/local/log/' + name + '.log'
LOG_LEVEL = env.getenv('WEB_LOG_LEVEL')
if LOG_LEVEL == "DEBUG":
LOG_LEVEL = logging.DEBUG
elif LOG_LEVEL == "INFO":
LOG_LEVEL = logging.INFO
elif LOG_LEVEL == "WARNING":
LOG_LEVEL = logging.WARNING
elif LOG_LEVEL == "ERROR":
LOG_LEVEL = logging.ERROR
elif LOG_LEVEL == "CRITICAL":
LOG_LEVEL = logging.CRITIAL
else:
LOG_LEVEL = logging.DEBUG
logger = logging.getLogger(name)
# Configure logging to log to a file, making a new file at midnight and keeping the last 3 day's data
# Give the logger a unique name (good practice)
# Set the log level to LOG_LEVEL
logger.setLevel(LOG_LEVEL)
# Make a handler that writes to a file, making a new file at midnight and keeping 3 backups
handler = logging.handlers.TimedRotatingFileHandler(LOG_FILENAME,
when="midnight", backupCount=0, encoding='utf-8')
# Format each log message like this
formatter = logging.Formatter('%(asctime)s %(levelname)-8s %(module)s[%(lineno)d] %(message)s')
# Attach the formatter to the handler
handler.setFormatter(formatter)
# Attach the handler to the logger
logger.addHandler(handler)
# Replace stdout with logging to file at INFO level
sys.stdout = RedirectLogger(logger, logging.INFO)
# Replace stderr with logging to file at ERROR level
sys.stderr = RedirectLogger(logger, logging.ERROR)
# Make a class we can use to capture stdout and sterr in the log
class RedirectLogger(object):
def __init__(self, logger, level):
"""Needs a logger and a logger level."""
self.logger = logger
self.level = level
def write(self, message):
# Only log if there is a message (not just a new line)
if message.rstrip() != "":
self.logger.log(self.level, message.rstrip())
def flush(self):
for handler in self.logger.handlers:
handler.flush()