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# $Id$
# Copyright (C) 2007--2008 American Registry for Internet Numbers ("ARIN")
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND ARIN DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS. IN NO EVENT SHALL ARIN BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
"""Logging facilities for RPKI libraries.
"""
import syslog, traceback
enable_trace = False
def init(ident = "rpki", flags = syslog.LOG_PID | syslog.LOG_PERROR, facility = syslog.LOG_DAEMON, trace = False):
"""Initialize logging system."""
global enable_trace
enable_trace = trace
return syslog.openlog(ident, flags, facility)
class logger(object):
"""Closure for logging."""
def __init__(self, priority):
self.priority = priority
def __call__(self, message):
return syslog.syslog(self.priority, message)
error = logger(syslog.LOG_ERR)
warning = logger(syslog.LOG_WARNING)
notice = logger(syslog.LOG_NOTICE)
info = logger(syslog.LOG_INFO)
debug = logger(syslog.LOG_DEBUG)
def trace():
"""Execution trace -- where are we now, and whence came we here?"""
if enable_trace:
bt = traceback.extract_stack(limit = 3)
return debug("[%s() at %s:%d from %s:%d]" % (bt[1][2], bt[1][0], bt[1][1], bt[0][0], bt[0][1]))
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