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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.Bzr')
class Bzr(Bcfg2.Server.Plugin.Plugin,
Bcfg2.Server.Plugin.Version):
name = 'Bzr'
__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 bzr directory for bcfg2 repo
bzr_dir = "%s/.bzr" % datastore
# Read revision from bcfg2 repo
if os.path.isdir(bzr_dir):
revision = self.get_revision()
else:
logger.error("%s is not a directory" % bzr_dir)
raise Bcfg2.Server.Plugin.PluginInitError
logger.debug("Initialized Bazaar plugin with directory = %(dir)s at revision = %(rev)s" % {'dir': bzr_dir, 'rev': revision})
def get_revision(self):
'''Read Bazaar revision information for the bcfg2 repository'''
try:
data = Popen(("env LC_ALL=C bzr revno %s" %
(self.datastore)), shell=True,
stdout=PIPE).stdout.readlines()
revision = data[0]
except IndexError:
logger.error("Failed to read bzr revno; disabling Bazaar support")
logger.error('''Ran command "bzr revno %s"''' % \
(self.datastore))
logger.error("Got output: %s" % data)
raise Bcfg2.Server.Plugin.PluginInitError
return revision
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