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-rw-r--r--src/lib/Server/Plugins/Darcs.py48
1 files changed, 48 insertions, 0 deletions
diff --git a/src/lib/Server/Plugins/Darcs.py b/src/lib/Server/Plugins/Darcs.py
new file mode 100644
index 000000000..51ec384cd
--- /dev/null
+++ b/src/lib/Server/Plugins/Darcs.py
@@ -0,0 +1,48 @@
+import os
+from subprocess import Popen, PIPE
+import Bcfg2.Server.Plugin
+
+# for debugging output only
+import logging
+logger = logging.getLogger('Bcfg2.Plugins.Darcs')
+
+class Darcs(Bcfg2.Server.Plugin.Plugin,
+ Bcfg2.Server.Plugin.Version):
+ """Darcs is a version plugin for dealing with bcfg2 repos"""
+ name = 'Darcs'
+ __version__ = '$Id$'
+ __author__ = 'bcfg-dev@mcs.anl.gov'
+
+ def __init__(self, core, datastore):
+ Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
+ Bcfg2.Server.Plugin.Version.__init__(self)
+ self.core = core
+ self.datastore = datastore
+
+ # path to darcs directory for bcfg2 repo
+ darcs_dir = "%s/_darcs" % datastore
+
+ # Read changeset from bcfg2 repo
+ if os.path.isdir(darcs_dir):
+ self.get_revision()
+ else:
+ logger.error("%s is not present." % darcs_dir)
+ raise Bcfg2.Server.Plugin.PluginInitError
+
+ logger.debug("Initialized Darcs plugin with darcs directory = %s" % darcs_dir)
+
+ 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.datastore,
+ stdout=PIPE).stdout.readlines()
+ revision = data[0].strip('\n')
+ except:
+ logger.error("Failed to read darcs repository; disabling Darcs support")
+ logger.error('''Ran command "darcs changes" from directory "%s"''' % (self.datastore))
+ logger.error("Got output: %s" % data)
+ raise Bcfg2.Server.Plugin.PluginInitError
+ return revision
+