image: Add 'image task show' commands

This replaces and the 'glance task-show' command. For example:

  $ image task show <TASK_ID>

Change-Id: I74cb23e436c373fe238804b903bbeb28f643d5af

1 files changed, 78 insertions, 0 deletions

diff --git a/openstackclient/image/v2/task.py b/openstackclient/image/v2/task.py
new file mode 100644
index 00000000..5f0c4ed5
--- /dev/null
+++ b/openstackclient/image/v2/task.py
@@ -0,0 +1,78 @@
+# 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.
+
+from osc_lib.cli import format_columns
+from osc_lib.command import command
+
+from openstackclient.i18n import _
+
+
+def _format_task(task):
+    """Format an task to make it more consistent with OSC operations."""
+
+    info = {}
+    properties = {}
+
+    # the only fields we're not including is "links", "tags" and the properties
+    fields_to_show = [
+        'created_at',
+        'expires_at',
+        'id',
+        'input',
+        'message',
+        'owner_id',
+        'result',
+        'status',
+        'type',
+        'updated_at',
+    ]
+
+    # split out the usual key and the properties which are top-level
+    for field in fields_to_show:
+        info[field] = task.get(field)
+
+    for key in task:
+        if key in fields_to_show:
+            continue
+
+        if key in {'location', 'name', 'schema'}:
+            continue
+
+        properties[key] = task.get(key)
+
+    # add properties back into the dictionary as a top-level key
+    info['properties'] = format_columns.DictColumn(properties)
+
+    return info
+
+
+class ShowTask(command.ShowOne):
+    _description = _('Display task details')
+
+    def get_parser(self, prog_name):
+        parser = super(ShowTask, self).get_parser(prog_name)
+
+        parser.add_argument(
+            'task',
+            metavar='<Task ID>',
+            help=_('Task to display (ID)'),
+        )
+
+        return parser
+
+    def take_action(self, parsed_args):
+        image_client = self.app.client_manager.image
+
+        task = image_client.get_task(parsed_args.task)
+        info = _format_task(task)
+
+        return zip(*sorted(info.items()))