Add project tags functionality

This change adds tags functionality for projects in keystone. A user
can add a single tag with "--tag", chain "--tag" to add multiple
tags, or clear tags with "--no-tag".

Change-Id: I31cfef3e76dcefe299dacb00c11bb1a10a252628
Partially-Implements: bp project-tags

2 files changed, 124 insertions, 1 deletions

diff --git a/openstackclient/identity/v3/project.py b/openstackclient/identity/v3/project.py
index 60efbac4..e819a0a8 100644
--- a/openstackclient/identity/v3/project.py
+++ b/openstackclient/identity/v3/project.py
@@ -26,7 +26,7 @@ import six
 
 from openstackclient.i18n import _
 from openstackclient.identity import common
-
+from openstackclient.identity.v3 import tag
 
 LOG = logging.getLogger(__name__)
 
@@ -79,6 +79,7 @@ class CreateProject(command.ShowOne):
             action='store_true',
             help=_('Return existing project'),
         )
+        tag.add_tag_option_to_parser_for_create(parser, _('project'))
         return parser
 
     def take_action(self, parsed_args):
@@ -102,6 +103,7 @@ class CreateProject(command.ShowOne):
         kwargs = {}
         if parsed_args.property:
             kwargs = parsed_args.property.copy()
+        kwargs['tags'] = list(set(parsed_args.tags))
 
         try:
             project = identity_client.projects.create(
@@ -207,6 +209,7 @@ class ListProject(command.Lister):
                    '(default: asc), repeat this option to specify multiple '
                    'keys and directions.'),
         )
+        tag.add_tag_filtering_option_to_parser(parser, _('projects'))
         return parser
 
     def take_action(self, parsed_args):
@@ -234,6 +237,8 @@ class ListProject(command.Lister):
 
             kwargs['user'] = user_id
 
+        tag.get_tag_filtering_args(parsed_args, kwargs)
+
         if parsed_args.my_projects:
             # NOTE(adriant): my-projects supersedes all the other filters.
             kwargs = {'user': self.app.client_manager.auth_ref.user_id}
@@ -303,6 +308,7 @@ class SetProject(command.Command):
             help=_('Set a property on <project> '
                    '(repeat option to set multiple properties)'),
         )
+        tag.add_tag_option_to_parser_for_set(parser, _('project'))
         return parser
 
     def take_action(self, parsed_args):
@@ -323,6 +329,7 @@ class SetProject(command.Command):
             kwargs['enabled'] = False
         if parsed_args.property:
             kwargs.update(parsed_args.property)
+        tag.update_tags_in_args(parsed_args, project, kwargs)
 
         identity_client.projects.update(project.id, **kwargs)
 
diff --git a/openstackclient/identity/v3/tag.py b/openstackclient/identity/v3/tag.py
new file mode 100644
index 00000000..abf022d4
--- /dev/null
+++ b/openstackclient/identity/v3/tag.py
@@ -0,0 +1,116 @@
+#   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.
+
+import argparse
+
+from openstackclient.i18n import _
+
+
+class _CommaListAction(argparse.Action):
+
+    def __call__(self, parser, namespace, values, option_string=None):
+        setattr(namespace, self.dest, values.split(','))
+
+
+def add_tag_filtering_option_to_parser(parser, collection_name):
+    parser.add_argument(
+        '--tags',
+        metavar='<tag>[,<tag>,...]',
+        action=_CommaListAction,
+        help=_('List %s which have all given tag(s) '
+               '(Comma-separated list of tags)') % collection_name
+    )
+    parser.add_argument(
+        '--tags-any',
+        metavar='<tag>[,<tag>,...]',
+        action=_CommaListAction,
+        help=_('List %s which have any given tag(s) '
+               '(Comma-separated list of tags)') % collection_name
+    )
+    parser.add_argument(
+        '--not-tags',
+        metavar='<tag>[,<tag>,...]',
+        action=_CommaListAction,
+        help=_('Exclude %s which have all given tag(s) '
+               '(Comma-separated list of tags)') % collection_name
+    )
+    parser.add_argument(
+        '--not-tags-any',
+        metavar='<tag>[,<tag>,...]',
+        action=_CommaListAction,
+        help=_('Exclude %s which have any given tag(s) '
+               '(Comma-separated list of tags)') % collection_name
+    )
+
+
+def get_tag_filtering_args(parsed_args, args):
+    if parsed_args.tags:
+        args['tags'] = ','.join(parsed_args.tags)
+    if parsed_args.tags_any:
+        args['tags-any'] = ','.join(parsed_args.tags_any)
+    if parsed_args.not_tags:
+        args['not-tags'] = ','.join(parsed_args.not_tags)
+    if parsed_args.not_tags_any:
+        args['not-tags-any'] = ','.join(parsed_args.not_tags_any)
+
+
+def add_tag_option_to_parser_for_create(parser, resource_name):
+    tag_group = parser.add_mutually_exclusive_group()
+    tag_group.add_argument(
+        '--tag',
+        action='append',
+        dest='tags',
+        metavar='<tag>',
+        default=[],
+        help=_('Tag to be added to the %s '
+               '(repeat option to set multiple tags)') % resource_name
+    )
+
+
+def add_tag_option_to_parser_for_set(parser, resource_name):
+    parser.add_argument(
+        '--tag',
+        action='append',
+        dest='tags',
+        metavar='<tag>',
+        default=[],
+        help=_('Tag to be added to the %s '
+               '(repeat option to set multiple tags)') % resource_name
+    )
+    parser.add_argument(
+        '--clear-tags',
+        action='store_true',
+        help=_('Clear tags associated with the %s. Specify '
+               'both --tag and --clear-tags to overwrite '
+               'current tags') % resource_name
+    )
+    parser.add_argument(
+        '--remove-tag',
+        metavar='<tag>',
+        default=[],
+        help=_('Tag to be deleted from the %s '
+               '(repeat option to delete multiple tags)') % resource_name
+    )
+
+
+def update_tags_in_args(parsed_args, obj, args):
+    if parsed_args.clear_tags:
+        args['tags'] = []
+        obj.tags = []
+    if parsed_args.remove_tag:
+        if parsed_args.remove_tag in obj.tags:
+            obj.tags.remove(parsed_args.remove_tag)
+        args['tags'] = list(set(obj.tags))
+        return
+    if parsed_args.tags:
+        args['tags'] = list(set(obj.tags).union(
+            set(parsed_args.tags)))