/usr/share/pyshared/pybit/daemonlogger.py is in pybit-common 1.0.0-2.
This file is owned by root:root, with mode 0o664.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | # daemonlogger.py
#
# Copyright 2010 Bud P. Bruegger <bud@sistema.it>
# Created on Mon, 25 Oct 2010
# http://code.activestate.com/recipes/577442-logging-support-for-python-daemon/
#
# BSD Licence
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of the author nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import os
import sys
import daemon
class FileLikeLogger:
"wraps a logging.Logger into a file like object"
def __init__(self, logger):
self.logger = logger
def write(self, _str):
_str = _str.rstrip() #get rid of all tailing newlines and white space
if _str: #don't log emtpy lines
for line in _str.split('\n'):
self.logger.critical(line) #critical to log at any logLevel
def flush(self):
for handler in self.logger.handlers:
handler.flush()
def close(self):
for handler in self.logger.handlers:
handler.close()
def openFilesFromLoggers(loggers):
"returns the open files used by file-based handlers of the specified loggers"
openFiles = []
for logger in loggers:
for handler in logger.handlers:
if hasattr(handler, 'stream') and \
hasattr(handler.stream, 'fileno'):
openFiles.append(handler.stream)
return openFiles
class LoggingDaemonContext(daemon.DaemonContext):
def _addLoggerFiles(self):
"adds all files related to loggers_preserve to files_preserve"
for logger in [self.stdout_logger, self.stderr_logger]:
if logger:
self.loggers_preserve.append(logger)
loggerFiles = openFilesFromLoggers(self.loggers_preserve)
self.files_preserve.extend(loggerFiles)
def __init__(
self,
chroot_directory=None,
working_directory='/',
umask=0,
uid=None,
gid=None,
prevent_core=True,
detach_process=None,
files_preserve=[], # changed default
loggers_preserve=[], # new
pidfile=None,
stdout_logger = None, # new
stderr_logger = None, # new
#stdin, omitted!
#stdout, omitted!
#sterr, omitted!
signal_map=None,
):
self.stdout_logger = stdout_logger
self.stderr_logger = stderr_logger
self.loggers_preserve = loggers_preserve
devnull_in = open(os.devnull, 'r+')
devnull_out = open(os.devnull, 'w+')
files_preserve.extend([devnull_in, devnull_out])
daemon.DaemonContext.__init__(self,
chroot_directory = chroot_directory,
working_directory = working_directory,
umask = umask,
uid = uid,
gid = gid,
prevent_core = prevent_core,
detach_process = detach_process,
files_preserve = files_preserve,
pidfile = pidfile,
stdin = devnull_in,
stdout = devnull_out,
stderr = devnull_out,
signal_map = signal_map)
def open(self):
self._addLoggerFiles()
daemon.DaemonContext.open(self)
if self.stdout_logger:
fileLikeObj = FileLikeLogger(self.stdout_logger)
sys.stdout = fileLikeObj
if self.stderr_logger:
fileLikeObj = FileLikeLogger(self.stderr_logger)
sys.stderr = fileLikeObj
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