/usr/share/pyshared/zope/server/logger/taillogger.py is in python-zope.server 3.8.6-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Tail Logger
"""
from zope.server.interfaces.logger import IMessageLogger
from zope.interface import implements
class TailLogger(object):
"""Keep track of the last <size> log messages"""
implements(IMessageLogger)
def __init__(self, logger, size=500):
self.size = size
self.logger = logger
self.messages = []
def logMessage(self, message):
'See IMessageLogger'
self.messages.append(strip_eol(message))
if len(self.messages) > self.size:
del self.messages[0]
self.logger.logMessage(message)
def strip_eol(line):
while line and line[-1] in '\r\n':
line = line[:-1]
return line
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