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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.Fossil')
class Fossil(Bcfg2.Server.Plugin.Plugin,
Bcfg2.Server.Plugin.Version):
"""Fossil is a version plugin for dealing with Bcfg2 repos."""
name = 'Fossil'
__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 fossil file for bcfg2 repo
fossil_file = "%s/_FOSSIL_" % datastore
# Read revision from bcfg2 repo
if os.path.isfile(fossil_file):
revision = self.get_revision()
elif not os.path.isdir(datastore):
logger.error("%s is not a directory" % datastore)
raise Bcfg2.Server.Plugin.PluginInitError
else:
logger.error("%s is not a file" % fossil_file)
raise Bcfg2.Server.Plugin.PluginInitError
logger.debug("Initialized Fossil.py plugin with %(ffile)s at revision %(frev)s" \
% {'ffile': fossil_file, 'frev': revision})
def get_revision(self):
"""Read fossil revision information for the Bcfg2 repository."""
try:
data = Popen("env LC_ALL=C fossil info",
shell=True,
cwd=self.datastore,
stdout=PIPE).stdout.readlines()
revline = [line.split(': ')[1].strip() for line in data if \
line.split(': ')[0].strip() == 'checkout'][-1]
revision = revline.split(' ')[0]
except IndexError:
logger.error("Failed to read fossil info; disabling fossil support")
logger.error('''Ran command "fossil info" from directory "%s"''' % (self.datastore))
logger.error("Got output: %s" % data)
raise Bcfg2.Server.Plugin.PluginInitError
return revision
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