initial checkin of export

cms/djangoapps/contentstore/management/commands/export.py

+###
+### Script for exporting courseware from Mongo to a tar.gz file
+###
+import os
+
+from django.core.management.base import BaseCommand, CommandError
+from xmodule.modulestore.xml_exporter import export_to_xml
+from xmodule.modulestore.django import modulestore
+from xmodule.contentstore.django import contentstore
+from xmodule.modulestore import Location
+from xmodule.course_module import CourseDescriptor
+
+
+unnamed_modules = 0
+
+
+class Command(BaseCommand):
+    help = \
+'''Import the specified data directory into the default ModuleStore'''
+
+    def handle(self, *args, **options):
+        if len(args) != 2:
+            raise CommandError("import requires two arguments: <course location> <output path>")
+
+        course_id = args[0]
+        output_path = args[1]
+
+        print "Exporting course id = {0} to {1}".format(course_id, output_path)
+
+        location = CourseDescriptor.id_to_location(course_id)
+
+        root_dir = os.path.dirname(output_path)
+        course_dir = os.path.splitext(os.path.basename(output_path))[0]
+
+        export_to_xml(modulestore('direct'), contentstore(), location, root_dir, course_dir)

common/lib/xmodule/xmodule/contentstore/mongo.py

@@ -12,6 +12,7 @@ import logging
 from .content import StaticContent, ContentStore
 from xmodule.exceptions import NotFoundError
 from fs.osfs import OSFS
+import os
 
 
 class MongoContentStore(ContentStore):
@@ -47,16 +48,30 @@ class MongoContentStore(ContentStore):
             with self.fs.get(id) as fp:
                 return StaticContent(location, fp.displayname, fp.content_type, fp.read(), 
                     fp.uploadDate, thumbnail_location = fp.thumbnail_location if 'thumbnail_location' in fp else None,
-                    import_path = fp.import_path if 'import_path' in fp else None)
+                    import_path = fp.import_path if hasattr(fp, 'import_path') else None)
         except NoFile:
             raise NotFoundError()
 
     def export(self, location, output_directory):
         content = self.find(location)
+
+        if content.import_path is not None:
+            output_directory = output_directory + '/' + os.path.dirname(content.import_path)
+
+        if not os.path.exists(output_directory):
+            os.makedirs(output_directory)
+
         disk_fs = OSFS(output_directory)
 
-        with disk_fs.open('course.xml', 'wb') as course_xml:
-            course_xml.write(content.data)
+        with disk_fs.open(content.name, 'wb') as asset_file:
+            asset_file.write(content.data)
+
+    def export_all_for_course(self, course_location, output_directory):
+        assets = self.get_all_content_for_course(course_location)
+
+        for asset in assets:
+            asset_location = Location(asset['_id'])
+            self.export(asset_location, output_directory)
 
     def get_all_content_thumbnails_for_course(self, location):
         return self._get_all_content_for_course(location, get_thumbnails = True)

common/lib/xmodule/xmodule/modulestore/xml_exporter.py

+import logging
+from xmodule.modulestore import Location
+from xmodule.modulestore.django import modulestore
+from fs.osfs import OSFS
+
+def export_to_xml(modulestore, contentstore, course_location, root_dir, course_dir):
+
+  course = modulestore.get_item(course_location)
+
+  fs = OSFS(root_dir)
+  export_fs = fs.makeopendir(course_dir)
+
+  xml = course.export_to_xml(export_fs)
+  with export_fs.open('course.xml', 'w') as course_xml:
+      course_xml.write(xml)
+
+  # export the static assets
+  contentstore.export_all_for_course(course_location, root_dir + '/' + course_dir + '/static/')
+
+  
\ No newline at end of file

common/lib/xmodule/xmodule/xml_module.py

@@ -102,6 +102,8 @@ class XmlDescriptor(XModuleDescriptor):
            # VS[compat] -- remove the below attrs once everything is in the CMS
            'course', 'org', 'url_name', 'filename')
 
+    metadata_to_export_to_policy = ('discussion_topics')
+
     # A dictionary mapping xml attribute names AttrMaps that describe how
     # to import and export them
     # Allow json to specify either the string "true", or the bool True.  The string is preferred.
@@ -112,6 +114,7 @@ class XmlDescriptor(XModuleDescriptor):
         # type conversion: want True/False in python, "true"/"false" in xml
         'graded': bool_map,
         'hide_progress_tab': bool_map,
+        'allow_anonymous': bool_map
     }
 
 
@@ -359,8 +362,9 @@ class XmlDescriptor(XModuleDescriptor):
         # Add the non-inherited metadata
         for attr in sorted(self.own_metadata):
             # don't want e.g. data_dir
-            if attr not in self.metadata_to_strip:
+            if attr not in self.metadata_to_strip and attr not in self.metadata_to_export_to_policy:
                 val = val_for_xml(attr)
+                # logging.debug('location.category = {0}, attr = {1}'.format(self.location.category, attr))
                 xml_object.set(attr, val)
 
         if self.export_to_file():