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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
'''Bcfg2 logging support'''
__revision__ = '$Revision$'
import copy, fcntl, logging, logging.handlers, lxml.etree, math, socket, struct, sys, termios, types
def print_attributes(attrib):
''' Add the attributes for an element'''
return ' '.join(['%s="%s"' % data for data in attrib.iteritems()])
def print_text(text):
''' Add text to the output (which will need normalising '''
charmap = {'<':'<', '>':'>', '&':'&'}
return ''.join([charmap.get(char, char) for char in text]) + '\n'
def xml_print(element, running_indent=0, indent=4):
''' Add an element and its children to the return string '''
if (len(element.getchildren()) == 0) and (not element.text):
ret = (' ' * running_indent)
ret += '<%s %s/>\n' % (element.tag, print_attributes(element.attrib))
else:
child_indent = running_indent + indent
ret = (' ' * running_indent)
ret += '<%s%s>\n' % (element.tag, print_attributes(element))
if element.text:
ret += (' '* child_indent) + print_text(element.text)
for child in element.getchildren():
ret += xml_print(child, child_indent, indent)
ret += (' ' * running_indent) + '</%s>\n' % (element.tag)
if element.tail:
ret += (' ' * child_indent) + print_text(element.tail)
return ret
class TermiosFormatter(logging.Formatter):
'''The termios formatter displays output in a terminal-sensitive fashion'''
def __init__(self, fmt=None, datefmt=None):
logging.Formatter.__init__(self, fmt, datefmt)
if sys.stdout.isatty():
# now get termios info
try:
self.width = struct.unpack('hhhh', fcntl.ioctl(0, termios.TIOCGWINSZ,
"\000"*8))[1]
if self.width == 0:
self.width = 80
except:
self.width = 80
else:
# output to a pipe
self.width = 32768
def format(self, record):
'''format a record for display'''
returns = []
line_len = self.width
if type(record.msg) in types.StringTypes:
for line in record.msg.split('\n'):
if len(line) <= line_len:
returns.append(line)
else:
inner_lines = int(math.floor(float(len(line)) / line_len))+1
for i in xrange(inner_lines):
returns.append("%s" % (line[i*line_len:(i+1)*line_len]))
elif type(record.msg) == types.ListType:
if not record.msg:
return ''
record.msg.sort()
msgwidth = self.width
columnWidth = max([len(item) for item in record.msg])
columns = int(math.floor(float(msgwidth) / (columnWidth+2)))
lines = int(math.ceil(float(len(record.msg)) / columns))
for lineNumber in xrange(lines):
indices = [idx for idx in [(colNum * lines) + lineNumber
for colNum in range(columns)] if idx < len(record.msg)]
format = (len(indices) * (" %%-%ds " % columnWidth))
returns.append(format % tuple([record.msg[idx] for idx in indices]))
elif type(record.msg) == lxml.etree._Element:
returns.append(str(xml_print(record.msg)))
else:
returns.append(record.name + ':' + str(record.msg))
if record.exc_info:
returns.append(self.formatException(record.exc_info))
return '\n'.join(returns)
class FragmentingSysLogHandler(logging.handlers.SysLogHandler):
'''This handler fragments messages into chunks smaller than 250 characters'''
def __init__(self, procname, path, facility):
self.procname = procname
logging.handlers.SysLogHandler.__init__(self, path, facility)
def emit(self, record):
'''chunk and deliver records'''
record.name = self.procname
if str(record.msg) > 250:
msgs = []
error = record.exc_info
msgdata = record.msg
while msgdata:
newrec = copy.deepcopy(record)
newrec.msg = msgdata[:250]
msgs.append(newrec)
msgdata = msgdata[250:]
msgs[0].exc_info = error
else:
msgs = [record]
while msgs:
newrec = msgs.pop()
try:
self.socket.send(self.format(newrec))
except socket.error:
self.socket.connect(self.address)
self.socket.send(self.format(newrec))
def setup_logging(procname, to_console=True, to_syslog=True, syslog_facility='local0', level=0):
'''setup logging for bcfg2 software'''
if hasattr(logging, 'already_setup'):
return
# add the handler to the root logger
if to_console:
console = logging.StreamHandler()
console.setLevel(logging.DEBUG)
# tell the handler to use this format
console.setFormatter(TermiosFormatter())
logging.root.addHandler(console)
if to_syslog:
try:
syslog = FragmentingSysLogHandler(procname, '/dev/log', syslog_facility)
syslog.setLevel(logging.DEBUG)
syslog.setFormatter(logging.Formatter('%(name)s[%(process)d]: %(message)s'))
logging.root.addHandler(syslog)
except socket.error:
logging.root.error("failed to activate syslogging")
logging.root.setLevel(level)
logging.already_setup = True
|
