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""" Darcs is a version plugin for dealing with Bcfg2 repos stored in the
Darcs VCS. """
from Bcfg2.Utils import Executor
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.cmd = Executor()
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."""
result = self.cmd.run(["env LC_ALL=C", "darcs", "changes"],
shell=True, cwd=self.vcs_root)
if result.success:
return result.stdout.splitlines()[0].strip()
else:
msg = "Failed to read revision from darcs: %s" % result.error
self.logger.error(msg)
raise Bcfg2.Server.Plugin.PluginExecutionError(msg)
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