Feature #298 - Environment tarball

*    Added command hooks for gmg_commands.import_export
*    Added (DANGEROUSLY BLEEDING EDGE) gmg_commands.import_export

mediagoblin/gmg_commands/__init__.py

@@ -44,6 +44,14 @@ SUBCOMMAND_MAP = {
         'setup': 'mediagoblin.gmg_commands.wipealldata:wipe_parser_setup',
         'func': 'mediagoblin.gmg_commands.wipealldata:wipe',
         'help': 'Wipes **all** the data for this MediaGoblin instance'},
+    'env_export': {
+        'setup': 'mediagoblin.gmg_commands.import_export:import_export_parse_setup',
+        'func': 'mediagoblin.gmg_commands.import_export:env_export',
+        'help': 'Exports the data for this MediaGoblin instance'},
+    'env_import': {
+        'setup': 'mediagoblin.gmg_commands.import_export:import_export_parse_setup',
+        'func': 'mediagoblin.gmg_commands.import_export:env_import',
+        'help': 'Exports the data for this MediaGoblin instance'},
     }
 
 

mediagoblin/gmg_commands/import_export.py

@@ -0,0 +1,87 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011 Free Software Foundation, Inc
+#
+# 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.gmg_commands import util as commands_util
+from mediagoblin import mg_globals
+from mediagoblin.db import util as db_util
+from mediagoblin.db.open import setup_connection_and_db_from_config
+from mediagoblin.init.config import read_mediagoblin_config
+
+import shlex
+import tarfile
+import subprocess
+import os.path
+
+def import_export_parse_setup(subparser):
+    # TODO: Add default
+    subparser.add_argument(
+        'tar_file')
+    subparser.add_argument(
+        '-cf', '--conf_file', default='mediagoblin.ini',
+        help='Config file used to set up environment')
+    subparser.add_argument(
+        '--mongodump_cache', default='mongodump',
+        help='mongodump cache directory')
+    subparser.add_argument(
+        '--mongodump_path', default='mongodump',
+        help='mongodump binary')
+
+def _export_database(db, args):
+    print "\n== Exporting database ==\n"
+
+    command = '{mongodump_path} -d {database} -o {mongodump_cache}'.format(
+        mongodump_path=args.mongodump_path,
+        database=db.name,
+        mongodump_cache=args.mongodump_cache)
+    
+    p = subprocess.Popen(
+        shlex.split(command))
+    
+    p.wait()
+
+    print "\n== Database exported ==\n"
+
+def _import_database(db, args):
+    pass
+
+def env_import(args):    
+    config, validation_result = read_mediagoblin_config(args.conf_file)
+    connection, db = setup_connection_and_db_from_config(
+        config['mediagoblin'], use_pymongo=True)
+
+def env_export(args):
+    config, validation_result = read_mediagoblin_config(args.conf_file)
+    connection, db = setup_connection_and_db_from_config(
+        config['mediagoblin'], use_pymongo=True)
+
+    if os.path.exists(args.tar_file):
+        overwrite = raw_input(
+            'The output file already exists. '
+            'Are you **SURE** you want to overwrite it? '
+            '(yes/no)> ')
+        if not overwrite == 'yes':
+            print "Aborting."
+            return
+
+    tf = tarfile.open(
+        args.tar_file,
+        mode='w|gz')
+
+
+    _export_database(db, args)
+    
+    tf.add(args.mongodump_cache)
+