Add development code for pushing CMS changes to github

cms/djangoapps/github_sync/__init__.py

@@ -1,6 +1,9 @@
 from git import Repo
 from contentstore import import_from_xml
 from fs.osfs import OSFS
+import os
+from xmodule.modulestore import Location
+from django.conf import settings
 
 
 def import_from_github(repo_settings):
@@ -13,17 +16,28 @@ def import_from_github(repo_settings):
         org: name of the 
     """
     repo_path = repo_settings['path']
+
+    if not os.path.isdir(repo_path):
+        Repo.clone_from(repo_settings['origin'], repo_path)
+
     git_repo = Repo(repo_path)
     origin = git_repo.remotes.origin
     origin.fetch()
 
     # Do a hard reset to the remote branch so that we have a clean import
-    git_repo.heads[repo_settings['branch']].checkout()
+    git_repo.git.checkout(repo_settings['branch'])
     git_repo.head.reset('origin/%s' % repo_settings['branch'], index=True, working_tree=True)
 
     return git_repo.head.commit.hexsha, import_from_xml(repo_settings['org'], repo_settings['course'], repo_path)
 
 
+def repo_path_from_location(location):
+    location = Location(location)
+    for name, repo in settings.REPOS.items():
+        if repo['org'] == location.org and repo['course'] == location.course:
+            return repo['path']
+
+
 def export_to_github(course, repo_path, commit_message):
     fs = OSFS(repo_path)
     xml = course.export_to_xml(fs)
@@ -37,4 +51,5 @@ def export_to_github(course, repo_path, commit_message):
         git_repo.git.commit(m=commit_message)
 
         origin = git_repo.remotes.origin
-        origin.push()
+        if settings.MITX_FEATURES['GITHUB_PUSH']:
+            origin.push()