Allow to run directly from a git checkout (#1037)

Signed-off-by: Sol Jerome <sol.jerome@gmail.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/src/lib/Bcfg2/Server/Plugins/Svn.py b/src/lib/Bcfg2/Server/Plugins/Svn.py
new file mode 100644
index 000000000..ae43388ea
--- /dev/null
+++ b/src/lib/Bcfg2/Server/Plugins/Svn.py
@@ -0,0 +1,46 @@
+import os
+import pipes
+from subprocess import Popen, PIPE
+import Bcfg2.Server.Plugin
+
+# for debugging output only
+import logging
+logger = logging.getLogger('Bcfg2.Plugins.Svn')
+
+
+class Svn(Bcfg2.Server.Plugin.Plugin,
+          Bcfg2.Server.Plugin.Version):
+    """Svn is a version plugin for dealing with Bcfg2 repos."""
+    name = 'Svn'
+    __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 svn directory for bcfg2 repo
+        svn_dir = "%s/.svn" % datastore
+
+        # Read revision from bcfg2 repo
+        if os.path.isdir(svn_dir):
+            self.get_revision()
+        else:
+            logger.error("%s is not a directory" % svn_dir)
+            raise Bcfg2.Server.Plugin.PluginInitError
+
+        logger.debug("Initialized svn plugin with svn directory = %s" % svn_dir)
+
+    def get_revision(self):
+        """Read svn revision information for the Bcfg2 repository."""
+        try:
+            data = Popen(("env LC_ALL=C svn info %s" %
+                         pipes.quote(self.datastore)), shell=True,
+                         stdout=PIPE).communicate()[0].split('\n')
+            return [line.split(': ')[1] for line in data \
+                    if line[:9] == 'Revision:'][-1]
+        except IndexError:
+            logger.error("Failed to read svn info; disabling svn support")
+            logger.error('''Ran command "svn info %s"''' % (self.datastore))
+            logger.error("Got output: %s" % data)
+            raise Bcfg2.Server.Plugin.PluginInitError