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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($0).split("/").last
@@logger = if STDIN.tty? && !ENV['BYTEBACK_TO_SYSLOG']
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
else
Syslog.open(@@me)
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
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