Backup create is not available from 3.0 to 3.42

Backup create command is shielded by patch [1].

[1]: 2255fc99da9752737dcaa96ae4507b646074afb2

Change-Id: I100b8734ee2df4d81e16e2bfdafd81227c20d25e

3 files changed, 69 insertions, 16 deletions

diff --git a/cinderclient/tests/unit/v3/test_shell.py b/cinderclient/tests/unit/v3/test_shell.py
index 6f713ca..37dbc49 100644
--- a/cinderclient/tests/unit/v3/test_shell.py
+++ b/cinderclient/tests/unit/v3/test_shell.py
@@ -1041,13 +1041,31 @@ class ShellTest(utils.TestCase):
                 mock_time.sleep.call_args_list)
         self.assertEqual([mock.call(some_id)] * 2, poll_fn.call_args_list)
 
+    def test_backup(self):
+        self.run_command('--os-volume-api-version 3.42 backup-create '
+                         '--name 1234 1234')
+        expected = {'backup': {'volume_id': 1234,
+                               'container': None,
+                               'name': '1234',
+                               'description': None,
+                               'incremental': False,
+                               'force': False,
+                               'snapshot_id': None,
+                               }}
+        self.assert_called('POST', '/backups', body=expected)
+
     def test_backup_with_metadata(self):
-        cmd = '--os-volume-api-version 3.43 '
-        cmd += 'backup-create '
-        cmd += '--metadata foo=bar '
-        cmd += '1234'
-        self.run_command(cmd)
-        self.assert_called('POST', '/backups')
+        self.run_command('--os-volume-api-version 3.43 backup-create '
+                         '--metadata foo=bar --name 1234 1234')
+        expected = {'backup': {'volume_id': 1234,
+                               'container': None,
+                               'name': '1234',
+                               'description': None,
+                               'incremental': False,
+                               'force': False,
+                               'snapshot_id': None,
+                               'metadata': {'foo': 'bar'}, }}
+        self.assert_called('POST', '/backups', body=expected)
 
     @mock.patch("cinderclient.utils.print_list")
     def test_snapshot_list_with_userid(self, mock_print_list):
diff --git a/cinderclient/v3/shell.py b/cinderclient/v3/shell.py
index 922c3a1..3f94b9d 100644
--- a/cinderclient/v3/shell.py
+++ b/cinderclient/v3/shell.py
@@ -2220,7 +2220,7 @@ def do_service_get_log(cs, args):
     columns = ('Binary', 'Host', 'Prefix', 'Level')
     utils.print_list(log_levels, columns)
 
-@api_versions.wraps('3.43')
+
 @utils.arg('volume', metavar='<volume>',
            help='Name or ID of volume to backup.')
 @utils.arg('--container', metavar='<container>',
@@ -2258,6 +2258,7 @@ def do_service_get_log(cs, args):
            nargs='*',
            metavar='<key=value>',
            default=None,
+           start_version='3.43',
            help='Metadata key and value pairs. Default=None.')
 def do_backup_create(cs, args):
     """Creates a volume backup."""
@@ -2268,14 +2269,23 @@ def do_backup_create(cs, args):
         args.description = args.display_description
 
     volume = utils.find_volume(cs, args.volume)
-    backup = cs.backups.create(volume.id,
-                               args.container,
-                               args.name,
-                               args.description,
-                               args.incremental,
-                               args.force,
-                               args.snapshot_id,
-                               args.metadata)
+    if hasattr(args, 'metadata') and args.metadata:
+        backup = cs.backups.create(volume.id,
+                                   args.container,
+                                   args.name,
+                                   args.description,
+                                   args.incremental,
+                                   args.force,
+                                   args.snapshot_id,
+                                   shell_utils.extract_metadata(args))
+    else:
+        backup = cs.backups.create(volume.id,
+                                   args.container,
+                                   args.name,
+                                   args.description,
+                                   args.incremental,
+                                   args.force,
+                                   args.snapshot_id)
 
     info = {"volume_id": volume.id}
     info.update(backup._info)
diff --git a/cinderclient/v3/volume_backups.py b/cinderclient/v3/volume_backups.py
index 555ace8..323daff 100644
--- a/cinderclient/v3/volume_backups.py
+++ b/cinderclient/v3/volume_backups.py
@@ -39,7 +39,31 @@ class VolumeBackupManager(volume_backups.VolumeBackupManager):
 
         return self._update("/backups/%s" % base.getid(backup), body)
 
-    @api_versions.wraps("3.43")
+    @api_versions.wraps("3.0")
+    def create(self, volume_id, container=None,
+               name=None, description=None,
+               incremental=False, force=False,
+               snapshot_id=None):
+        """Creates a volume backup.
+
+        :param volume_id: The ID of the volume to backup.
+        :param container: The name of the backup service container.
+        :param name: The name of the backup.
+        :param description: The description of the backup.
+        :param incremental: Incremental backup.
+        :param force: If True, allows an in-use volume to be backed up.
+        :rtype: :class:`VolumeBackup`
+        """
+        body = {'backup': {'volume_id': volume_id,
+                           'container': container,
+                           'name': name,
+                           'description': description,
+                           'incremental': incremental,
+                           'force': force,
+                           'snapshot_id': snapshot_id, }}
+        return self._create('/backups', body, 'backup')
+
+    @api_versions.wraps("3.43")  # noqa: F811
     def create(self, volume_id, container=None,
                name=None, description=None,
                incremental=False, force=False,
@@ -56,6 +80,7 @@ class VolumeBackupManager(volume_backups.VolumeBackupManager):
         :param metadata: Key Value pairs
         :rtype: :class:`VolumeBackup`
         """
+        # pylint: disable=function-redefined
         body = {'backup': {'volume_id': volume_id,
                            'container': container,
                            'name': name,