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import os
from subprocess import Popen, PIPE
import Bcfg2.Server.Plugin
# for debugging output only
import logging
logger = logging.getLogger('Bcfg2.Plugins.Git')
class Git(Bcfg2.Server.Plugin.Plugin,
Bcfg2.Server.Plugin.Version):
name = 'Git'
__version__ = '$Id$'
__author__ = 'bcfg-dev@mcs.anl.gov'
def __init__(self, core, datastore):
Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
self.core = core
self.datastore = datastore
# path to git directory for bcfg2 repo
git_dir = "%s/.git" % datastore
# Read revision from bcfg2 repo
if os.path.isdir(git_dir):
self.get_revision()
else:
logger.error("%s is not a directory" % git_dir)
raise Bcfg2.Server.Plugin.PluginInitError
logger.debug("Initialized git plugin with git directory = %s" % git_dir)
def get_revision(self):
'''Read git revision information for the bcfg2 repository'''
try:
data = Popen(("env LC_ALL=C git ls-remote %s" %
(self.datastore)), shell=True,
stdout=PIPE).stdout.readlines()
revline = [line.split('\t')[0].strip() for line in data if \
line.split('\t')[1].strip() == 'refs/heads/master'][-1]
revision = revline
except IndexError:
logger.error("Failed to read git ls-remote; disabling git support")
logger.error('''Ran command "git ls-remote %s"''' % \
(self.datastore))
logger.error("Got output: %s" % data)
raise Bcfg2.Server.Plugin.PluginInitError
return revision
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