PeterHarding: moved Python Logger to Implementing a Python Logger

2013-02-20T00:37:39Z

moved Python Logger to Implementing a Python Logger

← Older revision	Revision as of 10:37, 20 February 2013
(No difference)

PeterHarding at 00:37, 20 February 2013

2013-02-20T00:37:12Z

← Older revision		Revision as of 10:37, 20 February 2013
Line 1:		Line 1:

	=An Example==		=An Example=

	This example class builds on the underlying Python logging support.		This example class builds on the underlying Python logging support.

PeterHarding: Created page with " =An Example== This example class builds on the underlying Python logging support. ==Module==

 $ cat Logger.py  import os import sys import logging  #=================..."

2013-02-20T00:36:54Z

Created page with " =An Example== This example class builds on the underlying Python logging support. ==Module== <pre> $ cat Logger.py import os import sys import logging #=================..."

New page

=An Example==

This example class builds on the underlying Python logging support.

==Module==

<pre>
$ cat Logger.py

import os
import sys
import logging

#==========================================================================

class Logger:
logger = None
debug = False

@classmethod
def Info(cls, msg):
global debug_level, verbose_flg

if not cls.logger:
cls.Init()

cls.logger.info(' ' + msg)

if cls.debug: sys.stderr.write("[%s::INFO] %s\n" % (cls.name, msg))

#----------------------------------------------------------------------

@classmethod
def Error(cls, msg):
global debug_level, verbose_flg

if not cls.logger:
cls.Init()

cls.logger.error(msg)

if cls.debug: sys.stderr.write("[%s::ERROR] %s\n" % (cls.name, msg))

#----------------------------------------------------------------------

@classmethod
def Warning(cls, msg):
global debug_level, verbose_flg

if not cls.logger:
cls.Init()

cls.logger.warning('*****' + msg + '*****')

if cls.debug: sys.stderr.write("[%s::WARNING] %s\n" % (cls.name, msg))

#----------------------------------------------------------------------

@classmethod
def Init(cls, name='logger', log_dir='/c/temp', debug=False):
cls.debug = debug
cls.name = name
cls.pid = os.getpid()

if cls.debug: sys.stderr.write("[%s::Init] PID is %d\n" % (cls.name, cls.pid))

cls.log_file = '%s/%s.log' % (log_dir, name)

try:
cls.logger = logging.getLogger(name)
cls.hdlr = logging.FileHandler(cls.log_file)
cls.fmtr = logging.Formatter('%(asctime)s %(levelname)s %(message)s')

cls.hdlr.setFormatter(cls.fmtr)
cls.logger.addHandler(cls.hdlr)
cls.logger.setLevel(logging.INFO)

cls.logger.info("===== Started processing %s" % ('=' * 20))

cls.count = 0
except IOError, msg:
sys.stderr.write(cls.log_file + ': cannot open: ' + `msg` + '\n')
sys.exit(1)

#==========================================================================
</pre>

==Test harness==

<pre>
$ cat tst_logger.py

#!/usr/bin/env python

import flask
import performiq

from performiq import Logger

debug_level = 0
verbose_flg = True

print "performiq version [%s]" % performiq.VERSION

Logger.Init(debug=True)

Logger.Info("Testing - Info...")
Logger.Warning("Testing - Warning...")
Logger.Error("Testing - Error...")
</pre>

[[Category:Python]]
[[Category:Examples]]

Implementing a Python Logger - Revision history

PeterHarding: moved Python Logger to Implementing a Python Logger

PeterHarding at 00:37, 20 February 2013

PeterHarding: Created page with " =An Example== This example class builds on the underlying Python logging support. ==Module==
$ cat Logger.py import os import sys import logging #=================..."