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#
# Copyright 2012 - 2013 David Sommerseth <davids@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# For the avoidance of doubt the "preferred form" of this code is one which
# is in an open unpatent encumbered format. Where cryptographic key signing
# forms part of the process of creating an executable the information
# including keys needed to generate an equivalently functional executable
# are deemed to be part of the source code.
#
import sys
class Log(object):
NONE = 0
ALWAYS = 0
INFO = 1<<0
WARN = 1<<1
ERR = 1<<2
DEBUG = 1<<3
def __init__(self, logfile=None):
if logfile is not None:
self.__logfile = open(logfile, "w")
else:
self.__logfile = sys.stdout
self.__logverb = self.INFO
def __logtype_str(self, ltype):
if ltype == self.ALWAYS:
return ""
if ltype == self.INFO:
return "[INFO] "
elif ltype == self.WARN:
return "[WARNING] "
elif ltype == self.ERR:
return "[ERROR] "
elif ltype == self.DEBUG:
return "[DEBUG] "
def SetLogVerbosity(self, logverb):
self.__logverb = logverb
def log(self, logtype, msg):
if (logtype & self.__logverb) or logtype == self.ALWAYS:
self.__logfile.write("%s%s\n" %
(self.__logtype_str(logtype),
msg)
)
def unit_test(rootdir):
from itertools import takewhile, count
logtypes = (Log.ALWAYS, Log.INFO, Log.WARN, Log.ERR, Log.DEBUG)
logtypes_s = ("ALWAYS", "INFO", "WARN", "ERR", "DEBUG")
def test_log(l, msg):
for lt in logtypes:
l.log(lt, msg)
def run_log_test(l):
for lt in range(min(logtypes), max(logtypes)*2):
test = ", ".join([logtypes_s[logtypes.index(i)] for i in [p for p in takewhile(lambda x: x <= lt, (2**i for i in count())) if p & lt]])
print "Testing verbosity flags set to: (%i) %s" % (lt, test)
msg = "Log entry when verbosity is set to %i [%s]" % (lt, test)
l.SetLogVerbosity(lt)
test_log(l, msg)
print "-"*20
try:
print "** Testing stdout"
l = Log()
run_log_test(l)
print "** Testing file logging - using test.log"
l = Log("test.log")
run_log_test(l)
return 0
except Exception, e:
import traceback
traceback.print_exc(file=sys.stdout)
print "** EXCEPTION %s", str(e)
return 1
if __name__ == '__main__':
unit_test(None)
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