log_class.py

#!/usr/bin/env python
#
# $Id: log_class.py,v 1.8 2017/03/03 08:48:51 bob Exp $
# Raspberry Pi Internet Radio
# Logging class
#
# Author : Bob Rathbone
# Site   : http://www.bobrathbone.com
#
# License: GNU V3, See https://www.gnu.org/copyleft/gpl.html
#
# Disclaimer: Software is provided as is and absolutly no warranties are implied or given.
#             The authors shall not be liable for any loss or damage however caused.
#
# Modified to use /etc/radiod.conf from 3.15 onwards
#
# Log levels are :
# 	CRITICAL 50 
# 	ERROR 40 
# 	WARNING 30 
# 	INFO 20 
# 	DEBUG 10 
# 	NOTSET 0 
#
#  See https://docs.python.org/2/library/logging.html
#

import os
import logging
import ConfigParser

config = ConfigParser.ConfigParser()
ConfigFile = "/etc/radiod.conf"

class Log:

	CRITICAL = logging.CRITICAL
	ERROR = logging.ERROR
	WARNING = logging.WARNING
	INFO = logging.INFO
	DEBUG = logging.DEBUG
	NONE = 0

	module = '' 	# Module name for log entries
	loglevel = logging.INFO

        def __init__(self):
                return 

	def init(self,module):
		self.module = module
		self.loglevel = self.getConfig()
                return 

	def message(self,message,level):
		# Set up logging, level 
		if level != self.NONE:
		   try:
			logger = logging.getLogger('gipiod')
			hdlr = logging.FileHandler('/var/log/' + self.module + '.log')
			formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')
			hdlr.setFormatter(formatter)
			logger.addHandler(hdlr)
			logger.setLevel(self.loglevel)

			# write to log
			if level == self.CRITICAL:
				logger.critical(message)
			elif level == self.ERROR:
				logger.error(message)
			elif level == self.WARNING:
				logger.warning(message)
			elif level == self.INFO:
				logger.info(message)
			elif level == self.DEBUG:
				logger.debug(message)

			logger.removeHandler(hdlr)
			hdlr.close()
		   except Exception as e:
			print e
		return

	# Temporary set log level
	def setLevel(self,level):
		self.loglevel = level
		return

	# Get the log level from the configuration file
        def getLevel(self):
                return self.loglevel

	# Get configuration loglevel option
	def getConfig(self):
		section = 'RADIOD'
		option = 'loglevel'
		strLogLevel = 'INFO'

		# Get loglevel option
		config.read(ConfigFile)
		try:
			strLogLevel = config.get(section,option)

		except ConfigParser.NoSectionError:
			msg = ConfigParser.NoSectionError(section),'in',ConfigFile
			self.message(msg,self.ERROR)

		if strLogLevel == "CRITICAL":
			loglevel = self.CRITICAL
		elif strLogLevel == "ERROR":
			loglevel = self.ERROR
		elif strLogLevel == "WARNING":
			loglevel = self.WARNING
		elif strLogLevel == "INFO":
			loglevel = self.INFO
		elif strLogLevel == "DEBUG":
			loglevel = self.DEBUG
		elif strLogLevel == "NONE":
			loglevel = self.NONE
		else:
			loglevel = self.INFO
		return loglevel

# End of log class