Create "gmg convert_mongo_to_sql" command

Finally, to make testing of sql a bit easier, create a
bin/gmg command to do the conversion from mongo to sql.
It's currently named "convert_mongo_to_sql".

The most important option is the gmg -cf option to give a
configfile with the appropiate sql_engine definition.

mediagoblin/db/sql/convert.py

@@ -145,8 +145,8 @@ def convert_media_comments(mk_db):
     session.close()
 
 
-def main():
-    global_config, app_config = setup_global_and_app_config("mediagoblin.ini")
+def run_conversion(config_name):
+    global_config, app_config = setup_global_and_app_config(config_name)
 
     sql_conn, sql_db = sql_connect(app_config)
     mk_conn, mk_db = mongo_connect(app_config)
@@ -164,4 +164,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    run_conversion("mediagoblin.ini")

mediagoblin/gmg_commands/__init__.py

@@ -57,6 +57,10 @@ SUBCOMMAND_MAP = {
         'setup': 'mediagoblin.gmg_commands.dbupdate:dbupdate_parse_setup',
         'func': 'mediagoblin.gmg_commands.dbupdate:dbupdate',
         'help': 'Set up or update the SQL database'},
+    'convert_mongo_to_sql': {
+        'setup': 'mediagoblin.gmg_commands.mongosql:mongosql_parser_setup',
+        'func': 'mediagoblin.gmg_commands.mongosql:mongosql',
+        'help': 'Convert Mongo DB data to SQL DB data'},
     }
 
 

mediagoblin/gmg_commands/mongosql.py

@@ -0,0 +1,25 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from mediagoblin.db.sql.convert import run_conversion
+
+
+def mongosql_parser_setup(subparser):
+    pass
+
+
+def mongosql(args):
+    run_conversion(args.conf_file)