Add metadata support for volume

Now able to pass metadata to the create method,
as well as update it with set, and remove it with unset.
I'm currently passing it as an optional param like the following:
--meta-data=key1=value1
which seems weird, what about
--meta-data=key1:value1
I'd have to update type too if that is the case.

Change-Id: I0fc8398768da015c1f53c5c564c68a2cfb53e778

openstackclient/volume/v1/volume.py

@@ -76,8 +76,8 @@ class CreateVolume(show.ShowOne):
             help='Availability Zone to use',
         )
         parser.add_argument(
-            '--metadata',
+            '--meta-data',
-            metavar='<metadata>',
+            metavar='<key=value>',
             help='Optional metadata to set on volume creation',
         )
         parser.add_argument(
@@ -97,6 +97,11 @@ class CreateVolume(show.ShowOne):
         self.log.debug('take_action(%s)' % parsed_args)
 
         volume_client = self.app.client_manager.volume
+
+        meta = None
+        if parsed_args.meta_data:
+            meta = dict(v.split('=') for v in parsed_args.meta_data.split(' '))
+
         volume = volume_client.volumes.create(
             parsed_args.size,
             parsed_args.snapshot_id,
@@ -107,7 +112,7 @@ class CreateVolume(show.ShowOne):
             parsed_args.user_id,
             parsed_args.project_id,
             parsed_args.availability_zone,
-            parsed_args.metadata,
+            meta,
             parsed_args.image_ref
         )
 
@@ -172,12 +177,22 @@ class ListVolume(lister.Lister):
             default=False,
             help='Display information from all tenants (Admin-only)',
         )
+        parser.add_argument(
+            '--long',
+            action='store_true',
+            default=False,
+            help='Display meta-data',
+        )
         return parser
 
     def take_action(self, parsed_args):
         self.log.debug('take_action(%s)' % parsed_args)
+
         columns = ('ID', 'Status', 'Display Name', 'Size',
                    'Volume Type', 'Bootable', 'Attached to')
+        if parsed_args.long:
+            columns = ('ID', 'Status', 'Display Name', 'Size',
+                       'Volume Type', 'Bootable', 'Attached to', 'Meta-data')
 
         search_opts = {
             'all_tenants': parsed_args.all_tenants,
@@ -191,7 +206,7 @@ class ListVolume(lister.Lister):
         return (columns,
                 (utils.get_item_properties(
                     s, columns,
-                    formatters={},
+                    formatters={'Meta-data': _format_meta_data},
                 ) for s in data))
 
 
@@ -206,7 +221,7 @@ class SetVolume(command.Command):
         parser.add_argument(
             'volume',
             metavar='<volume>',
-            help='ID of volume to change')
+            help='Name or ID of volume to change')
         parser.add_argument(
             '--name',
             metavar='<new-volume-name>',
@@ -215,19 +230,29 @@ class SetVolume(command.Command):
             '--description',
             metavar='<volume-description>',
             help='New volume description')
+        parser.add_argument(
+            '--meta-data',
+            metavar='<key=value>',
+            help='meta-data to add to volume')
         return parser
 
     def take_action(self, parsed_args):
         self.log.debug('take_action(%s)' % parsed_args)
         volume_client = self.app.client_manager.volume
         volume = utils.find_resource(volume_client.volumes, parsed_args.volume)
+
+        meta = None
+        if parsed_args.meta_data:
+            meta = dict(v.split('=') for v in parsed_args.meta_data.split(' '))
+            volume_client.volumes.set_metadata(volume.id, meta)
+
         kwargs = {}
         if parsed_args.name:
             kwargs['display_name'] = parsed_args.name
         if parsed_args.description:
             kwargs['display_description'] = parsed_args.description
 
-        if not kwargs:
+        if not kwargs and not meta:
             sys.stdout.write("Volume not updated, no arguments present \n")
             return
         volume_client.volumes.update(volume.id, **kwargs)
@@ -245,7 +270,7 @@ class ShowVolume(show.ShowOne):
         parser.add_argument(
             'volume',
             metavar='<volume>',
-            help='ID of volume to display')
+            help='Name or ID of volume to display')
         return parser
 
     def take_action(self, parsed_args):
@@ -254,3 +279,52 @@ class ShowVolume(show.ShowOne):
         volume = utils.find_resource(volume_client.volumes, parsed_args.volume)
 
         return zip(*sorted(volume._info.iteritems()))
+
+
+class UnsetVolume(command.Command):
+    """Unset volume command"""
+
+    api = 'volume'
+    log = logging.getLogger(__name__ + '.UnsetVolume')
+
+    def get_parser(self, prog_name):
+        parser = super(UnsetVolume, self).get_parser(prog_name)
+        parser.add_argument(
+            'volume',
+            metavar='<volume>',
+            help='Name or ID of volume to change')
+        parser.add_argument(
+            '--meta-data',
+            metavar='<key>',
+            help='meta-data to remove from volume (key only)')
+        return parser
+
+    def take_action(self, parsed_args):
+        self.log.debug('take_action(%s)' % parsed_args)
+        volume_client = self.app.client_manager.volume
+        volume = utils.find_resource(
+            volume_client.volumes, parsed_args.volume)
+
+        if not parsed_args.meta_data:
+            sys.stdout.write("Volume not updated, no arguments present \n")
+            return
+
+        key_list = []
+        key_list.append(parsed_args.meta_data)
+        volume_client.volumes.delete_metadata(volume.id, key_list)
+
+        return
+
+
+def _format_meta_data(volume):
+    """Return a string containing the key value pairs
+
+    :param server: a single volume resource
+    :rtype: a string formatted to key=value
+    """
+
+    keys = volume.metadata
+    output = ""
+    for s in keys:
+        output = output + s + "=" + keys[s] + "; "
+    return output

setup.py

@@ -225,6 +225,7 @@ setuptools.setup(
             'list_volume=openstackclient.volume.v1.volume:ListVolume',
             'set_volume=openstackclient.volume.v1.volume:SetVolume',
             'show_volume=openstackclient.volume.v1.volume:ShowVolume',
+            'unset_volume=openstackclient.volume.v1.volume:UnsetVolume',
 
             'create_volume-type='
                 'openstackclient.volume.v1.type:CreateVolumeType',