Viewing file:  ErrorLogFetch.py (4.58 KB) -rw-r--r--
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#!/usr/bin/env python
## Printing troubleshooter
## Copyright (C) 2008, 2010 Red Hat, Inc.
## Authors:
## Tim Waugh <twaugh@redhat.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 2 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, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
import cups
import os
import tempfile
import time
from timedops import TimedOperation
from base import *
class ErrorLogFetch(Question):
def __init__ (self, troubleshooter):
Question.__init__ (self, troubleshooter, "Error log fetch")
troubleshooter.new_page (gtk.Label (), self)
self.persistent_answers = {}
def display (self):
answers = self.troubleshooter.answers
parent = self.troubleshooter.get_window ()
self.answers = {}
try:
checkpoint = answers['error_log_checkpoint']
except KeyError:
checkpoint = None
if self.persistent_answers.has_key ('error_log'):
checkpoint = None
def fetch_log (c):
prompt = c._get_prompt_allowed ()
c._set_prompt_allowed (False)
c._connect ()
(tmpfd, tmpfname) = tempfile.mkstemp ()
os.close (tmpfd)
success = False
try:
c.getFile ('/admin/log/error_log', tmpfname)
success = True
except cups.HTTPError:
try:
os.remove (tmpfname)
except OSError:
pass
c._set_prompt_allowed (prompt)
if success:
return tmpfname
return None
self.authconn = self.troubleshooter.answers['_authenticated_connection']
if answers.has_key ('error_log_debug_logging_set'):
try:
self.op = TimedOperation (self.authconn.adminGetServerSettings,
parent=parent)
settings = self.op.run ()
except cups.IPPError:
return False
settings[cups.CUPS_SERVER_DEBUG_LOGGING] = '0'
orig_settings = answers['cups_server_settings']
settings['MaxLogSize'] = orig_settings.get ('MaxLogSize', '2000000')
success = False
def set_settings (connection, settings):
connection.adminSetServerSettings (settings)
# Now reconnect.
attempt = 1
while attempt <= 5:
try:
time.sleep (1)
connection._connect ()
break
except RuntimeError:
# Connection failed
attempt += 1
try:
self.op = TimedOperation (set_settings,
(self.authconn, settings),
parent=parent)
self.op.run ()
self.persistent_answers['error_log_debug_logging_unset'] = True
except cups.IPPError:
pass
if checkpoint != None:
self.op = TimedOperation (fetch_log,
(self.authconn,),
parent=parent)
tmpfname = self.op.run ()
if tmpfname != None:
f = file (tmpfname)
f.seek (checkpoint)
lines = f.readlines ()
os.remove (tmpfname)
self.answers = { 'error_log': map (lambda x: x.strip (),
lines) }
return False
def collect_answer (self):
answers = self.persistent_answers.copy ()
answers.update (self.answers)
return answers
def cancel_operation (self):
self.op.cancel ()
# Abandon the CUPS connection and make another.
answers = self.troubleshooter.answers
factory = answers['_authenticated_connection_factory']
self.authconn = factory.get_connection ()
self.answers['_authenticated_connection'] = self.authconn
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