Rename nimble to mogan(part three)

This part includes codes folder renaming.

Co-Authored-By: Zhenguo Niu <Niu.ZGlinux@gmail.com>

Change-Id: I919f17a769baee44ce19f65bab900f9d6bd8b982

mogan/cmd/dbsync.py

@@ -0,0 +1,91 @@
+# Copyright 2016 Huawei Technologies Co.,LTD.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""
+Run storage database migration.
+"""
+
+import sys
+
+from oslo_config import cfg
+
+from mogan.common.i18n import _
+from mogan.common import service
+from mogan.conf import CONF
+from mogan.db import migration
+
+
+class DBCommand(object):
+
+    def upgrade(self):
+        migration.upgrade(CONF.command.revision)
+
+    def revision(self):
+        migration.revision(CONF.command.message, CONF.command.autogenerate)
+
+    def stamp(self):
+        migration.stamp(CONF.command.revision)
+
+    def version(self):
+        print(migration.version())
+
+    def create_schema(self):
+        migration.create_schema()
+
+
+def add_command_parsers(subparsers):
+    command_object = DBCommand()
+
+    parser = subparsers.add_parser(
+        'upgrade',
+        help=_("Upgrade the database schema to the latest version. "
+               "Optionally, use --revision to specify an alembic revision "
+               "string to upgrade to."))
+    parser.set_defaults(func=command_object.upgrade)
+    parser.add_argument('--revision', nargs='?')
+
+    parser = subparsers.add_parser('stamp')
+    parser.add_argument('--revision', nargs='?')
+    parser.set_defaults(func=command_object.stamp)
+
+    parser = subparsers.add_parser(
+        'revision',
+        help=_("Create a new alembic revision. "
+               "Use --message to set the message string."))
+    parser.add_argument('-m', '--message')
+    parser.add_argument('--autogenerate', action='store_true')
+    parser.set_defaults(func=command_object.revision)
+
+    parser = subparsers.add_parser(
+        'version',
+        help=_("Print the current version information and exit."))
+    parser.set_defaults(func=command_object.version)
+
+    parser = subparsers.add_parser(
+        'create_schema',
+        help=_("Create the database schema."))
+    parser.set_defaults(func=command_object.create_schema)
+
+
+def main():
+    command_opt = cfg.SubCommandOpt('command',
+                                    title='Command',
+                                    help=_('Available commands'),
+                                    handler=add_command_parsers)
+
+    CONF.register_cli_opt(command_opt)
+
+    service.prepare_service(sys.argv)
+    CONF.command.func()