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
|
require 'logger'
require 'syslog'
module Byteback
#
# Translates Ruby's Logger calls to similar calls to Syslog
# (implemented in Ruby 2.0 as Syslog::Logger).
#
# We need to neuter % signs which are taken as format strings.
#
class SyslogProxy
class << self
def debug(m)
log_nopc(Syslog::LOG_DEBUG, m)
end
def info(m)
log_nopc(Syslog::LOG_INFO, m)
end
def warn(m)
log_nopc(Syslog::LOG_WARNING, m)
end
def error(m)
log_nopc(Syslog::LOG_ERR, m)
end
#
# syslog(3) says:
#
# LOG_EMERG means "system is unusable"
# LOG_ERR means "error conditions"
#
# Errors might be fatal to Byteback, but they're unlikely to make the
# whole server unusable. So lets dial this down to ERR from EMERG.
#
def fatal(m)
log_nopc(Syslog::LOG_ERR, m)
end
def log_nopc(level, m)
Syslog.log(level, m.gsub('%', '%%'))
end
end
end
# Log proxy class that we can include in our scripts for some simple
# logging defaults.
#
module Log
@@me = File.expand_path($PROGRAM_NAME).split('/').last
#
# If we're running interactively then we have simple logging.
#
if STDIN.tty?
#
# We log to the console.
#
logger = Logger.new(STDERR)
logger.level = Logger::DEBUG
logger.formatter = proc { |severity, _datetime, _progname, msg|
if severity == 'FATAL' || severity == 'ERROR'
"*** #{msg}\n"
else
"#{msg}\n"
end
}
@@logger = logger
else
#
# Otherwise we log via our Syslog-proxy.
#
Syslog.open(@@me)
@@logger = SyslogProxy
end
def debug(*a)
@@logger.__send__(:debug, *a)
end
def info(*a)
@@logger.__send__(:info, *a)
end
def warn(*a)
@@logger.__send__(:warn, *a)
end
def fatal(*a)
@@logger.__send__(:fatal, *a)
exit 1
end
def error(*a)
@@logger.__send__(:error, *a)
end
end
end
|
