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checks.py
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# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2012, 2013 CERN.
##
## Invenio 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.
##
## Invenio 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 Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
Checks to run before and/or after a complete upgrade to ensure certain
pre-/post-conditions are met (e.g. BibSched not running).
"""
from __future__ import absolute_import
import logging
import subprocess
#
# Global pre/post-checks
#
def pre_check_bibsched():
"""
Check if bibsched is running
"""
logger = logging.getLogger('invenio_upgrader')
logger.info("Checking bibsched process...")
output, error = subprocess.Popen(["bibsched", "status"],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE).communicate()
is_manual = False
is_0_running = False
for line in (output + error).splitlines():
if 'BibSched queue running mode: MANUAL' in line:
is_manual = True
if 'Running processes: 0' in line:
is_0_running = True
stopped = is_manual and is_0_running
if not stopped:
raise RuntimeError("Bibsched is running. Please stop bibsched "
"using the command:\n$ bibsched stop")
def post_check_bibsched():
"""
Inform user to start bibsched again
"""
logger = logging.getLogger('invenio_upgrader')
logger.info("Remember to start bibsched again:\n$ bibsched start")
return True

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