89 lines
3.0 KiB
Python
89 lines
3.0 KiB
Python
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# backend_log.py
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# Logging infrastructure for Anaconda's backend.
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#
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# Copyright (C) 2009 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): Ales Kozumplik <akozumpl@redhat.com>
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#
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import logging
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import os
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import signal
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import anaconda_log
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import iutil
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SYSLOG_PATH = '/sbin/rsyslogd'
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SYSLOG_PIDFILE = '/var/run/rsyslog_backend.pid'
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SYSLOG_CFGFILE = '/etc/rsyslog_backend.conf'
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CFG_TEMPLATE = """
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$ModLoad imuxsock
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$InputUnixListenSocketHostName sysimage
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$AddUnixListenSocket %(socket)s
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+sysimage
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*.* %(logfile)s;RSYSLOG_TraditionalFileFormat
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%(remote_syslog)s
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"""
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global_log = logging.getLogger("anaconda")
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class BackendSyslog:
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def __init__(self):
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pass
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def build_cfg(self, root, log):
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socket = "%s/dev/log" % (root, )
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remote_syslog = ''
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if anaconda_log.logger.remote_syslog:
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remote_syslog = "*.* @@%s" % (anaconda_log.logger.remote_syslog, )
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cfg = CFG_TEMPLATE % {
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'socket' : socket,
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'logfile' : log,
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'remote_syslog' : remote_syslog
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}
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with open(SYSLOG_CFGFILE, 'w') as cfg_file:
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cfg_file.write(cfg)
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def start(self, root, log):
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""" Start an rsyslogd instance dedicated for the sysimage.
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Other possibility would be to change configuration and SIGHUP the
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existing instance, but it could lose some of its internal queues and
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give us problems with remote logging.
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"""
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self.build_cfg(root, log)
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args = ['-c', '4',
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'-f', SYSLOG_CFGFILE,
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'-i', str(SYSLOG_PIDFILE)]
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status = iutil.execWithRedirect(SYSLOG_PATH, args)
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if status == 0:
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global_log.info("Backend logger started.")
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else:
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global_log.error("Unable to start backend logger")
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def stop(self):
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try:
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with open(SYSLOG_PIDFILE, 'r') as pidfile:
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pid = int(pidfile.read())
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os.kill(pid, signal.SIGKILL)
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except:
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return
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global_log.info("Backend logger stopped.")
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log = BackendSyslog()
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