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"""Revision interface for Bcfg2 repos using mercurial.
"""
import sys
from mercurial import ui, hg
import Bcfg2.Server.Plugin
class Hg(Bcfg2.Server.Plugin.Version):
"""Revision interface for Bcfg2 repos using mercurial.
"""
__author__ = 'bcfg-dev@mcs.anl.gov'
__vcs_metadata_path__ = ".hg"
def __init__(self, core):
Bcfg2.Server.Plugin.Version.__init__(self, core)
self.logger.debug("Initialized hg plugin with hg directory %s" %
self.vcs_path)
def get_revision(self):
"""Read hg revision information for the Bcfg2 repository."""
try:
repo_path = Bcfg2.Options.setup.vcs_root + "/"
repo = hg.repository(ui.ui(), repo_path)
tip = repo.changelog.tip()
return repo.changelog.rev(tip)
except hg.error.RepoError:
err = sys.exc_info()[1]
msg = "Failed to read hg repository: %s" % err
self.logger.error(msg)
raise Bcfg2.Server.Plugin.PluginExecutionError(msg)
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