started a seperate branch to manage translations for v0.3.x based on tags/v0.3.4.2
fixed corrupt language.hdf file for "volume_passwd" (merged from [891]) fixed spelling in "plugin_manager" and "volume_format_fs" (merged from [880]) merged current state of update_po_files.py (removed obsolete revert_unchanged.sh)
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218
translation-base-v0.3/plugins/logs/logs.py
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translation-base-v0.3/plugins/logs/logs.py
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#
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# Copyright 2006 sense.lab e.V.
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#
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# This file is part of the CryptoBox.
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#
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# The CryptoBox is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# The CryptoBox is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with the CryptoBox; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""The logs feature of the CryptoBox.
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"""
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__revision__ = "$Id"
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import cryptobox.plugins.base
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import re
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import datetime
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import cherrypy
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LOG_LEVELS = [ 'DEBUG', 'INFO', 'NOTICE', 'WARNING', 'ERROR' ]
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LINE_REGEX = re.compile(r"(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2}) " \
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+ r"(?P<hour>\d{2}):(?P<minute>\d{2}):\d{2},\d{3} (?P<level>" \
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+ "|".join([ "(?:%s)" % e for e in LOG_LEVELS]) + r"): (?P<text>.*)$")
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class logs(cryptobox.plugins.base.CryptoBoxPlugin):
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"""The logs feature of the CryptoBox.
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"""
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plugin_capabilities = [ "system" ]
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plugin_visibility = [ "preferences" ]
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request_auth = False
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rank = 90
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def do_action(self, lines=50, size=3000, level=None):
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"""Show the latest part of the log file.
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"""
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## filter input
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try:
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lines = int(lines)
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if lines <= 0:
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raise(ValueError)
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except ValueError:
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self.cbox.log.info("[logs] invalid line number: %s" % str(lines))
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lines = 50
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try:
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size = int(size)
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if size <= 0:
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raise(ValueError)
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except ValueError:
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self.cbox.log.info("[logs] invalid log size: %s" % str(size))
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size = 3000
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if not level is None:
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level = str(level)
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if not level in LOG_LEVELS:
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self.cbox.log.info("[logs] invalid log level: %s" % str(level))
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level = None
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for (index, line) in enumerate(self.__filter_log_content(lines, size, level)):
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self.__set_line_hdf_data(self.hdf_prefix + "Content.%d" % index, line)
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self.hdf[self.hdf_prefix + "Destination"] = \
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self.cbox.prefs["Log"]["Destination"].lower()
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return "show_log"
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@cherrypy.expose
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def download(self, **kargs):
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"""Download the complete log file
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**kargs are necessary - we have to ignore 'weblang' and so on ...
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"""
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log_file = self.__get_log_destination_file()
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if log_file is None:
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return ""
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else:
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return cherrypy.lib.cptools.serveFile(log_file,
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disposition="attachment", name="cryptobox_logfile.txt")
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def get_status(self):
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"""The current status includes the log configuration details.
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"""
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return "%s:%s:%s" % (
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self.cbox.prefs["Log"]["Level"],
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self.cbox.prefs["Log"]["Destination"],
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self.cbox.prefs["Log"]["Details"])
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def __filter_log_content(self, lines, max_size, level):
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"""Filter, sort and shorten the log content.
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"""
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if level and level in LOG_LEVELS:
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filtered_levels = LOG_LEVELS[:]
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## only the given and higher levels are accepted
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while filtered_levels[0] != level:
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del filtered_levels[0]
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content = []
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current_length = 0
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for line in self.__get_log_data():
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## search for matching lines for the given log level
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for one_level in filtered_levels:
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if line.find(" %s: " % one_level) != -1:
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break
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else:
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## the line does not contain an appropriate level name
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continue
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## we found a line that fits
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content.append(line)
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current_length += len(line)
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if lines and len(content) >= lines:
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break
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if max_size and current_length >= max_size:
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break
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else:
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content = self.__get_log_data(lines, max_size)
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return content
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def __set_line_hdf_data(self, hdf_prefix, line):
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"""Parse the log line for time and log level.
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If parsing fails, then the output line is simply displayed without
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meta information.
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"""
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self.hdf[hdf_prefix + ".Text"] = line.strip()
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match = LINE_REGEX.match(line)
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if not match:
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## we could not parse the line - just return the text without meta info
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return
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## matching was successful - we can parse the line for details
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## calculate time difference of log line (aka: age of event)
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try:
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(year, month, day, hour, minute) = match.group(
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'year', 'month', 'day', 'hour', 'minute')
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(year, month, day, hour, minute) = \
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(int(year), int(month), int(day), int(hour), int(minute))
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## timediff is a timedelta object
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timediff = datetime.datetime.today() - \
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datetime.datetime(year, month, day, hour, minute)
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## the time units (see below) correspond to the names within the language
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## file: Text.TimeUnits.Days ...
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if timediff.days >= 1:
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self.hdf[hdf_prefix + ".TimeDiff.Unit"] = 'Days'
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self.hdf[hdf_prefix + ".TimeDiff.Value"] = timediff.days
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elif timediff.seconds >= 3600:
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self.hdf[hdf_prefix + ".TimeDiff.Unit"] = 'Hours'
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self.hdf[hdf_prefix + ".TimeDiff.Value"] = timediff.seconds / 3600
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elif timediff.seconds >= 60:
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self.hdf[hdf_prefix + ".TimeDiff.Unit"] = 'Minutes'
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self.hdf[hdf_prefix + ".TimeDiff.Value"] = timediff.seconds / 60
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else:
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self.hdf[hdf_prefix + ".TimeDiff.Unit"] = 'Seconds'
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self.hdf[hdf_prefix + ".TimeDiff.Value"] = timediff.seconds
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except (OverflowError, TypeError, ValueError, IndexError), err_msg:
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pass
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## retrieve the level
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try:
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self.hdf[hdf_prefix + ".Level"] = match.group('level')
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except IndexError:
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pass
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try:
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self.hdf[hdf_prefix + ".Text"] = match.group('text').strip()
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except IndexError:
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pass
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def __get_log_destination_file(self):
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"""For non-file log destinations return 'None' and output a warning
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"""
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try:
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if self.cbox.prefs["Log"]["Destination"].upper() == "FILE":
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import os
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return os.path.abspath(self.cbox.prefs["Log"]["Details"])
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else:
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return None
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except KeyError:
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self.cbox.log.error(
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"could not evaluate one of the following config settings: "
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+ "[Log]->Destination or [Log]->Details")
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return None
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def __get_log_data(self, lines=None, max_size=None):
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"""get the most recent log entries of the log file
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the maximum number and size of these entries can be limited by
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'lines' and 'max_size'
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"""
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log_file = self.__get_log_destination_file()
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## return nothing if the currently selected log output is not a file
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if log_file is None:
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return []
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try:
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fdesc = open(log_file, "r")
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if max_size:
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fdesc.seek(-max_size, 2) # seek relative to the end of the file
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content = fdesc.readlines()
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fdesc.close()
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except IOError:
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self.cbox.log.warn("failed to read the log file (%s)" % log_file)
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return []
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if lines:
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content = content[-lines:]
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content.reverse()
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return content
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