Replace nova get server with shade client.

Rename get_server_by_name with get_server.
Function get_server now uses shade client.

JIRA: YARDSTICK-1088

Change-Id: I69c59145cefdb565f3ece27baaaf932905e1b757
Signed-off-by: Shobhi Jain <shobhi.jain@intel.com>
(cherry picked from commit d75a91ebf2937e5cfe5cf2aa5a90db9121f73967)

5 files changed, 125 insertions, 78 deletions

diff --git a/yardstick/benchmark/scenarios/lib/get_server.py b/yardstick/benchmark/scenarios/lib/get_server.py
index fcf47c80d..f65fa9ebf 100644
--- a/yardstick/benchmark/scenarios/lib/get_server.py
+++ b/yardstick/benchmark/scenarios/lib/get_server.py
@@ -6,14 +6,11 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
-
-from __future__ import print_function
-from __future__ import absolute_import
-
 import logging
 
 from yardstick.benchmark.scenarios import base
-import yardstick.common.openstack_utils as op_utils
+from yardstick.common import openstack_utils
+from yardstick.common import exceptions
 
 LOG = logging.getLogger(__name__)
 
@@ -21,63 +18,58 @@ LOG = logging.getLogger(__name__)
 class GetServer(base.Scenario):
     """Get a server instance
 
-  Parameters
-    server_id - ID of the server
-        type:    string
-        unit:    N/A
-        default: null
-    server_name - name of the server
-        type:    string
-        unit:    N/A
-        default: null
-
-    Either server_id or server_name is required.
-
-  Outputs
+    Parameters:
+    name_or_id - Name or ID of the server
+        type: string
+    filters - meta data to use for further filtering
+        type: dict
+    detailed: Whether or not to add detailed additional information.
+        type: bool
+    bare: Whether to skip adding any additional information to the server
+          record.
+        type: bool
+    all_projects: Whether to get server from all projects or just the current
+                  auth scoped project.
+        type: bool
+
+    Outputs:
     rc - response code of getting server instance
-        0 for success
-        1 for failure
+        1 for success
+        0 for failure
         type:    int
-        unit:    N/A
     server - instance of the server
         type:    dict
-        unit:    N/A
+
     """
 
-    __scenario_type__ = "GetServer"
+    __scenario_type__ = 'GetServer'
 
     def __init__(self, scenario_cfg, context_cfg):
         self.scenario_cfg = scenario_cfg
         self.context_cfg = context_cfg
-        self.options = self.scenario_cfg.get('options', {})
+        self.options = self.scenario_cfg['options']
 
-        self.server_id = self.options.get("server_id")
-        if self.server_id:
-            LOG.debug('Server id is %s', self.server_id)
+        self.server_name_or_id = self.options.get('name_or_id')
+        self.filters = self.options.get('filters')
+        self.detailed = self.options.get('detailed', False)
+        self.bare = self.options.get('bare', False)
 
-        default_name = self.scenario_cfg.get('host',
-                                             self.scenario_cfg.get('target'))
-        self.server_name = self.options.get('server_name', default_name)
-        if self.server_name:
-            LOG.debug('Server name is %s', self.server_name)
-
-        self.nova_client = op_utils.get_nova_client()
+        self.shade_client = openstack_utils.get_shade_client()
 
     def run(self, result):
         """execute the test"""
 
-        if self.server_id:
-            server = self.nova_client.servers.get(self.server_id)
-        else:
-            server = op_utils.get_server_by_name(self.server_name)
-
-        keys = self.scenario_cfg.get('output', '').split()
+        server = openstack_utils.get_server(
+            self.shade_client, name_or_id=self.server_name_or_id,
+            filters=self.filters, detailed=self.detailed, bare=self.bare)
 
-        if server:
-            LOG.info("Get server successful!")
-            values = [0, self._change_obj_to_dict(server)]
-        else:
-            LOG.info("Get server failed!")
-            values = [1]
+        if not server:
+            result.update({'get_server': 0})
+            LOG.error('Get Server failed!')
+            raise exceptions.ScenarioGetServerError
 
+        result.update({'get_server': 1})
+        LOG.info('Get Server successful!')
+        keys = self.scenario_cfg.get('output', '').split()
+        values = [server]
         return self._push_to_outputs(keys, values)
diff --git a/yardstick/common/exceptions.py b/yardstick/common/exceptions.py
index 3a51892cc..cb8fabda8 100644
--- a/yardstick/common/exceptions.py
+++ b/yardstick/common/exceptions.py
@@ -238,6 +238,10 @@ class ScenarioAttachVolumeError(YardstickException):
     message = 'Nova Attach Volume Scenario failed'
 
 
+class ScenarioGetServerError(YardstickException):
+    message = 'Nova Get Server Scenario failed'
+
+
 class ApiServerError(YardstickException):
     message = 'An unkown exception happened to Api Server!'
 
diff --git a/yardstick/common/openstack_utils.py b/yardstick/common/openstack_utils.py
index 0a3cfb5fc..0220c4212 100644
--- a/yardstick/common/openstack_utils.py
+++ b/yardstick/common/openstack_utils.py
@@ -321,12 +321,26 @@ def delete_instance(shade_client, name_or_id, wait=False, timeout=180,
         return False
 
 
-def get_server_by_name(name):   # pragma: no cover
+def get_server(shade_client, name_or_id=None, filters=None, detailed=False,
+               bare=False):
+    """Get a server by name or ID.
+
+    :param name_or_id: Name or ID of the server.
+    :param filters:(dict) A dictionary of meta data to use for further
+                   filtering.
+    :param detailed:(bool) Whether or not to add detailed additional
+                    information.
+    :param bare:(bool) Whether to skip adding any additional information to the
+                server record.
+
+    :returns: A server ``munch.Munch`` or None if no matching server is found.
+    """
     try:
-        return get_nova_client().servers.list(search_opts={'name': name})[0]
-    except IndexError:
-        log.exception('Failed to get nova client')
-        raise
+        return shade_client.get_server(name_or_id=name_or_id, filters=filters,
+                                       detailed=detailed, bare=bare)
+    except exc.OpenStackCloudException as o_exc:
+        log.error("Error [get_server(shade_client, '%s')]. "
+                  "Exception message: %s", name_or_id, o_exc.orig_message)
 
 
 def create_flavor(name, ram, vcpus, disk, **kwargs):   # pragma: no cover
diff --git a/yardstick/tests/unit/benchmark/scenarios/lib/test_get_server.py b/yardstick/tests/unit/benchmark/scenarios/lib/test_get_server.py
index 83ec903bc..5b5329cb0 100644
--- a/yardstick/tests/unit/benchmark/scenarios/lib/test_get_server.py
+++ b/yardstick/tests/unit/benchmark/scenarios/lib/test_get_server.py
@@ -6,37 +6,52 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 ##############################################################################
+from oslo_utils import uuidutils
 import unittest
 import mock
 
-from yardstick.benchmark.scenarios.lib.get_server import GetServer
+from yardstick.common import openstack_utils
+from yardstick.common import exceptions
+from yardstick.benchmark.scenarios.lib import get_server
 
 
 class GetServerTestCase(unittest.TestCase):
 
-    @mock.patch('yardstick.common.openstack_utils.get_server_by_name')
-    @mock.patch('yardstick.common.openstack_utils.get_nova_client')
-    def test_get_server_with_name(self, mock_get_nova_client, mock_get_server_by_name):
-        scenario_cfg = {
-            'options': {
-                'server_name': 'yardstick_server'
-            },
-            'output': 'status server'
-        }
-        obj = GetServer(scenario_cfg, {})
-        obj.run({})
-        mock_get_nova_client.assert_called_once()
-        mock_get_server_by_name.assert_called_once()
-
-    @mock.patch('yardstick.common.openstack_utils.get_nova_client')
-    def test_get_server_with_id(self, mock_get_nova_client):
-        scenario_cfg = {
-            'options': {
-                'server_id': '1'
-            },
-            'output': 'status server'
-        }
-        mock_get_nova_client().servers.get.return_value = None
-        obj = GetServer(scenario_cfg, {})
-        obj.run({})
-        mock_get_nova_client.assert_called()
+    def setUp(self):
+
+        self._mock_get_server = mock.patch.object(
+            openstack_utils, 'get_server')
+        self.mock_get_server = self._mock_get_server.start()
+        self._mock_get_shade_client = mock.patch.object(
+            openstack_utils, 'get_shade_client')
+        self.mock_get_shade_client = self._mock_get_shade_client.start()
+        self._mock_log = mock.patch.object(get_server, 'LOG')
+        self.mock_log = self._mock_log.start()
+        self.args = {'options': {'name_or_id': 'yardstick_key'}}
+        self.result = {}
+
+        self.getserver_obj = get_server.GetServer(self.args, mock.ANY)
+        self.addCleanup(self._stop_mock)
+
+    def _stop_mock(self):
+        self._mock_get_server.stop()
+        self._mock_get_shade_client.stop()
+        self._mock_log.stop()
+
+    def test_run(self):
+        _uuid = uuidutils.generate_uuid()
+        self.getserver_obj.scenario_cfg = {'output': 'server'}
+        self.mock_get_server.return_value = (
+            {'name': 'server-name', 'id': _uuid})
+        output = self.getserver_obj.run(self.result)
+        self.assertDictEqual({'get_server': 1}, self.result)
+        self.assertDictEqual({'server': {'name': 'server-name', 'id': _uuid}},
+                             output)
+        self.mock_log.info.asset_called_once_with('Get Server successful!')
+
+    def test_run_fail(self):
+        self.mock_get_server.return_value = None
+        with self.assertRaises(exceptions.ScenarioGetServerError):
+            self.getserver_obj.run(self.result)
+        self.assertDictEqual({'get_server': 0}, self.result)
+        self.mock_log.error.assert_called_once_with('Get Server failed!')
diff --git a/yardstick/tests/unit/common/test_openstack_utils.py b/yardstick/tests/unit/common/test_openstack_utils.py
index 3441ad264..89a810cf7 100644
--- a/yardstick/tests/unit/common/test_openstack_utils.py
+++ b/yardstick/tests/unit/common/test_openstack_utils.py
@@ -467,3 +467,25 @@ class AttachVolumeToServerTestCase(unittest.TestCase):
             self.mock_shade_client, 'server_name_or_id', 'volume_name_or_id')
         mock_logger.error.assert_called_once()
         self.assertFalse(output)
+
+
+class GetServerTestCase(unittest.TestCase):
+
+    def test_get_server(self):
+        self.mock_shade_client = mock.Mock()
+        _uuid = uuidutils.generate_uuid()
+        self.mock_shade_client.get_server.return_value = {
+            'name': 'server_name', 'id': _uuid}
+        output = openstack_utils.get_server(self.mock_shade_client,
+                                            'server_name_or_id')
+        self.assertEqual({'name': 'server_name', 'id': _uuid}, output)
+
+    @mock.patch.object(openstack_utils, 'log')
+    def test_get_server_exception(self, mock_logger):
+        self.mock_shade_client = mock.Mock()
+        self.mock_shade_client.get_server.side_effect = (
+            exc.OpenStackCloudException('error message'))
+        output = openstack_utils.get_server(self.mock_shade_client,
+                                            'server_name_or_id')
+        mock_logger.error.assert_called_once()
+        self.assertIsNone(output)