image: Add 'image task show' commands

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

  $ image task show <TASK_ID>

Change-Id: I74cb23e436c373fe238804b903bbeb28f643d5af

3 files changed, 212 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()))
diff --git a/openstackclient/tests/unit/image/v2/fakes.py b/openstackclient/tests/unit/image/v2/fakes.py
index a0eda6d2..2decd122 100644
--- a/openstackclient/tests/unit/image/v2/fakes.py
+++ b/openstackclient/tests/unit/image/v2/fakes.py
@@ -18,6 +18,7 @@ import uuid
 
 from openstack.image.v2 import image
 from openstack.image.v2 import member
+from openstack.image.v2 import task
 
 from openstackclient.tests.unit import fakes
 from openstackclient.tests.unit.identity.v3 import fakes as identity_fakes
@@ -44,6 +45,9 @@ class FakeImagev2Client:
 
         self.remove_tag = mock.Mock()
 
+        self.tasks = mock.Mock()
+        self.get_task = mock.Mock()
+
         self.auth_token = kwargs['token']
         self.management_url = kwargs['endpoint']
         self.version = 2.0
@@ -129,3 +133,53 @@ def create_one_image_member(attrs=None):
     image_member_info.update(attrs)
 
     return member.Member(**image_member_info)
+
+
+def create_one_task(attrs=None):
+    """Create a fake task.
+
+    :param attrs: A dictionary with all attributes of task
+    :type attrs: dict
+    :return: A fake Task object.
+    :rtype: `openstack.image.v2.task.Task`
+    """
+    attrs = attrs or {}
+
+    # Set default attribute
+    task_info = {
+        'created_at': '2016-06-29T16:13:07Z',
+        'expires_at': '2016-07-01T16:13:07Z',
+        'id': str(uuid.uuid4()),
+        'input': {
+            'image_properties': {
+                'container_format': 'ovf',
+                'disk_format': 'vhd'
+            },
+            'import_from': 'https://apps.openstack.org/excellent-image',
+            'import_from_format': 'qcow2'
+        },
+        'message': '',
+        'owner': str(uuid.uuid4()),
+        'result': {
+            'image_id': str(uuid.uuid4()),
+        },
+        'schema': '/v2/schemas/task',
+        'status': random.choice(
+            [
+                'pending',
+                'processing',
+                'success',
+                'failure',
+            ]
+        ),
+        # though not documented, the API only allows 'import'
+        # https://github.com/openstack/glance/blob/24.0.0/glance/api/v2/tasks.py#L186-L190
+        'type': 'import',
+        'updated_at': '2016-06-29T16:13:07Z',
+
+    }
+
+    # Overwrite default attributes if there are some attributes set
+    task_info.update(attrs)
+
+    return task.Task(**task_info)
diff --git a/openstackclient/tests/unit/image/v2/test_task.py b/openstackclient/tests/unit/image/v2/test_task.py
new file mode 100644
index 00000000..90fa11d8
--- /dev/null
+++ b/openstackclient/tests/unit/image/v2/test_task.py
@@ -0,0 +1,80 @@
+# 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 openstackclient.image.v2 import task
+from openstackclient.tests.unit.image.v2 import fakes as image_fakes
+
+
+class TestTask(image_fakes.TestImagev2):
+    def setUp(self):
+        super().setUp()
+
+        # Get shortcuts to mocked image client
+        self.client = self.app.client_manager.image
+
+
+class TestTaskShow(TestTask):
+
+    task = image_fakes.create_one_task()
+
+    columns = (
+        'created_at',
+        'expires_at',
+        'id',
+        'input',
+        'message',
+        'owner_id',
+        'properties',
+        'result',
+        'status',
+        'type',
+        'updated_at',
+    )
+    data = (
+        task.created_at,
+        task.expires_at,
+        task.id,
+        task.input,
+        task.message,
+        task.owner_id,
+        format_columns.DictColumn({}),
+        task.result,
+        task.status,
+        task.type,
+        task.updated_at,
+    )
+
+    def setUp(self):
+        super().setUp()
+
+        self.client.get_task.return_value = self.task
+
+        # Get the command object to test
+        self.cmd = task.ShowTask(self.app, None)
+
+    def test_task_show(self):
+        arglist = [self.task.id]
+        verifylist = [
+            ('task', self.task.id),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        # In base command class ShowOne in cliff, abstract method take_action()
+        # returns a two-part tuple with a tuple of column names and a tuple of
+        # data to be shown.
+        columns, data = self.cmd.take_action(parsed_args)
+        self.client.get_task.assert_called_with(self.task.id)
+
+        self.assertEqual(self.columns, columns)
+        self.assertCountEqual(self.data, data)