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#!/usr/bin/env python
#
# Synchronize.py: this file is part of the GRS suite
# Copyright (C) 2015 Anthony G. Basile
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
import os
from grs.Constants import CONST
from grs.Execute import Execute
class Synchronize():
""" Either clone or pull a remote git repository for a GRS system. """
def __init__(self, remote_repo, branch, libdir = CONST.LIBDIR, logfile = CONST.LOGFILE):
self.remote_repo = remote_repo
self.branch = branch
self.local_repo = libdir
self.logfile = logfile
def sync(self):
if self.isgitdir():
# If the local repo exists, then make it pristine an pull
cmd = 'git -C %s reset HEAD --hard' % self.local_repo
Execute(cmd, timeout=60, logfile=self.logfile)
cmd = 'git -C %s clean -f -x -d' % self.local_repo
Execute(cmd, timeout=60, logfile=self.logfile)
cmd = 'git -C %s pull' % self.local_repo
Execute(cmd, timeout=60, logfile=self.logfile)
else:
# else clone afresh.
cmd = 'git clone %s %s' % (self.remote_repo, self.local_repo)
Execute(cmd, timeout=60, logfile=self.logfile)
# Make sure we're on the correct branch for the desired GRS system.
cmd = 'git -C %s checkout %s' % (self.local_repo, self.branch)
Execute(cmd, timeout=60, logfile=self.logfile)
def isgitdir(self):
""" If there is a .git/config file, assume its a local git repository. """
git_configdir = os.path.join(self.local_repo, '.git')
git_configfile = os.path.join(git_configdir, 'config')
return os.path.isdir(git_configdir) and os.path.isfile(git_configfile)
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