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69 lines
2.1 KiB
69 lines
2.1 KiB
7 months ago
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#!/usr/bin/env python2
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# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This module brings together the magic to setup logging correctly for
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# pseudomodem.
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import logging
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import logging.handlers
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import os
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import sys
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SYSLOG_DEVICE = '/dev/log'
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class ModemManagerFormatter(logging.Formatter):
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"""
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Format log strings such that rsyslogd handles them correctly.
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By adding a prefix 'ModemManager[xxx]' where |xxx| contains the pid, we can
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ensure that rsyslogd treats the messages the same way it treats messages
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from ModemManager.
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"""
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def __init__(self, *args, **kwargs):
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super(ModemManagerFormatter, self).__init__(*args, **kwargs)
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self._pid = os.getpid()
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def format(self, record):
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"""
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The main function that converts log records to strings.
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@param record: The log record.
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@returns: The formatted log string.
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"""
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result = super(ModemManagerFormatter, self).format(record)
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return 'pseudomodem[%d]: %s' % (self._pid, result)
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def SetupLogging():
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"""
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The main function that sets up logging as expected. It does the following:
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(1) Clear out existing logging setup that leaks in during autotest import.
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(2) Setup logging handler to log to stdout
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(3) Setup logging handler to log to syslog.
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"""
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root = logging.getLogger()
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for handler in root.handlers:
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root.removeHandler(handler)
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stdout_handler = logging.StreamHandler(sys.stdout)
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stdout_formatter = logging.Formatter(
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fmt='%(asctime)s %(levelname)-5.5s| %(message)s',
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datefmt='%H:%M:%S')
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stdout_handler.setFormatter(stdout_formatter)
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root.addHandler(stdout_handler)
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syslog_handler = logging.handlers.SysLogHandler(
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SYSLOG_DEVICE,
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facility=logging.handlers.SysLogHandler.LOG_DAEMON)
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syslog_formatter = ModemManagerFormatter(
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fmt='%(levelname)-5.5s|%(module)10.10s:%(lineno)4.4d| %(message)s')
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syslog_handler.setFormatter(syslog_formatter)
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root.addHandler(syslog_handler)
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