1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
# Copyright (C) 1998 by the Free Software Foundation, Inc.
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""File-based logger, writes to named category files in mm_cfg.LOG_DIR."""
import sys
import os
import Mailman.mm_cfg
from Logging.Utils import __logexc
class Logger:
def __init__(self, category, nofail=1):
"""Nofail (by default) says to fallback to sys.stderr if write
fails to category file. A message is emitted, but the IOError is
caught. Set nofail=0 if you want to handle the error in your code,
instead.
"""
self.__filename = os.path.join(Mailman.mm_cfg.LOG_DIR, category)
self.__fp = None
self.__nofail = nofail
def __del__(self):
self.close()
def __repr__(self):
return '<Logger to file: %s>' % self.__filename
def __get_f(self):
if self.__fp:
return self.__fp
else:
try:
ou = os.umask(002)
try:
f = self.__fp = open(self.__filename, 'a+')
finally:
os.umask(ou)
except IOError, msg:
if self.__nofail:
__logexc(self, msg)
else:
# re-raise the original exception
raise
return f
def flush(self):
f = self.__get_f()
if hasattr(f, 'flush'):
f.flush()
def write(self, msg):
f = self.__get_f()
try:
f.write(msg)
except IOError, msg:
__logexc(self, msg)
def writelines(self, lines):
for l in lines:
self.write(l)
def close(self):
if not self.__fp:
return
self.__get_f().close()
|
