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#!/usr/bin/env python
#
# Copyright 2012 Patrick Hetu <patrick.hetu@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# You need to install:
#
# * http://raven.readthedocs.org/en/latest/index.html
# * http://pypi.python.org/pypi/loggerglue/
#
# And configure rsyslog to send data:
#
# $ActionQueueType LinkedList   # use asynchronous processing
# $ActionQueueFileName test # set file name, also enables disk mode
# $ActionResumeRetryCount -1    # infinite retries on insert failure
# $ActionQueueSaveOnShutdown on # save in-memory data if rsyslog shuts down
#
# *.*       @@192.168.0.1:10514;RSYSLOG_SyslogProtocol23Format
#
# Note: You need to adpte your IP address and the Sentry dsn of this script.

import logging

from raven import Client
from loggerglue.server import SyslogServer, SyslogHandler

client = Client(dsn='<your dsn here>')

PRIVAL_SEVERITY = {
    0: logging.CRITICAL,
    1: logging.CRITICAL,
    2: logging.CRITICAL,
    3: logging.ERROR,
    4: logging.WARNING,
    5: logging.INFO,
    6: logging.INFO,
    7: logging.DEBUG,
}

PRIVAL_FACILITY = {
    0: "LOG_KERN",
    1: "LOG_USER",
    2: "LOG_MAIL",
    3: "LOG_DAEMON",
    4: "LOG_AUTH",
    5: "LOG_SYSLOG",
    6: "LOG_LPR",
    7: "LOG_NEWS",
    8: "LOG_UUCP",
    9: "LOG_CRON",
    10: "LOG_AUTHPRIV",
    16: "LOG_LOCAL0",
    17: "LOG_LOCAL1",
    18: "LOG_LOCAL2",
    19: "LOG_LOCAL3",
    20: "LOG_LOCAL4",
    21: "LOG_LOCAL5",
    22: "LOG_LOCAL6",
    23: "LOG_LOCAL7",
}


def prival(prival):
    sev_num = prival % 8
    fac_num = (prival - sev_num) / 8
    return (PRIVAL_SEVERITY[sev_num], PRIVAL_FACILITY[fac_num])


class SimpleHandler(SyslogHandler):
    def handle_entry(self, entry):
        level, fac = prival(entry.prival)
        client.name = entry.hostname

        data = {'level': level, "culprit": ".".join([fac, entry.app_name]),
                'logger': ".".join([fac, entry.app_name])}

        client.capture('Message', message=entry.msg,
                       date=entry.timestamp, data=data)


s = SyslogServer(('127.0.0.1', 10514), SimpleHandler)
print "START", s
s.serve_forever()