Add Version plugin type

The following changes were made:
 * Remove VCS logic out of the Core
 * Add Git/Svn plugins
 * Remove config file directive in bcfg2.conf

Use of the plugins are enabled by adding Git or Svn (or both)
to the plugins line of bcfg2.conf

Signed-off-by: Sol Jerome <solj@ices.utexas.edu>


git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@5044 ce84e21b-d406-0410-9b95-82705330c041

1 files changed, 45 insertions, 0 deletions

diff --git a/src/lib/Server/Plugins/Git.py b/src/lib/Server/Plugins/Git.py
new file mode 100644
index 000000000..1c17c8e47
--- /dev/null
+++ b/src/lib/Server/Plugins/Git.py
@@ -0,0 +1,45 @@
+import os
+import Bcfg2.Server.Plugin
+
+# for debugging output only
+import logging
+logger = logging.getLogger('Bcfg2.Plugins.Git')
+
+class Git(Bcfg2.Server.Plugin.Plugin,
+          Bcfg2.Server.Plugin.Version):
+    name = 'Git'
+    __version__ = '$Id$'
+    __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 git directory for bcfg2 repo
+        git_dir = "%s/.git" % datastore
+
+        # Read revision from bcfg2 repo
+        if os.path.isdir(git_dir):
+            self.get_revision()
+        else:
+            logger.error("%s is not a directory" % git_dir)
+            raise Bcfg2.Server.Plugin.PluginInitError
+
+        logger.debug("Initialized git plugin with git directory = %s" % git_dir)
+
+    def get_revision(self):
+        '''Read git revision information for the bcfg2 repository'''
+        try:
+            data = os.popen("env LC_ALL=C git ls-remote %s" %
+                            (self.datastore)).readlines()
+            revline = [line.split('\t')[0].strip() for line in data if \
+                       line.split('\t')[1].strip() == 'refs/heads/master'][-1]
+            revision = revline
+        except IndexError:
+            logger.error("Failed to read git ls-remote; disabling git support")
+            logger.error('''Ran command "git ls-remote %s"''' % \
+                            (self.datastore))
+            logger.error("Got output: %s" % data)
+            raise Bcfg2.Server.Plugin.PluginInitError
+        return revision