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""" Darcs is a version plugin for dealing with Bcfg2 repos stored in the
Darcs VCS. """
from subprocess import Popen, PIPE
import Bcfg2.Server.Plugin
class Darcs(Bcfg2.Server.Plugin.Version):
""" Darcs is a version plugin for dealing with Bcfg2 repos stored
in the Darcs VCS. """
__author__ = 'bcfg-dev@mcs.anl.gov'
__vcs_metadata_path__ = "_darcs"
def __init__(self, core, datastore):
Bcfg2.Server.Plugin.Version.__init__(self, core, datastore)
self.logger.debug("Initialized Darcs plugin with darcs directory %s" %
self.vcs_path)
def get_revision(self):
"""Read Darcs changeset information for the Bcfg2 repository."""
try:
data = Popen("env LC_ALL=C darcs changes",
shell=True,
cwd=self.vcs_root,
stdout=PIPE).stdout.readlines()
revision = data[0].strip('\n')
except:
msg = "Failed to read darcs repository"
self.logger.error(msg)
self.logger.error('Ran command "darcs changes" from directory %s' %
self.vcs_root)
raise Bcfg2.Server.Plugin.PluginExecutionError(msg)
return revision
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