Reject node power off requests to align with ironic supporting NCSI

Change-Id: I99b0c934ab97b01672d304900a54631db6401a87

doc/source/admin/emulator.conf

@@ -193,3 +193,6 @@ SUSHY_EMULATOR_ALLOWED_INSTANCES = [
     "529QB9453R6"
 ]
 
+# Disable the ability to power off the node, in line with NCSI enablement in
+# Ironic
+SUSHY_EMULATOR_DISABLE_POWER_OFF = False

sushy_tools/emulator/main.py

@@ -614,6 +614,12 @@ def processor(identity, processor_id):
 @api_utils.returns_json
 def system_reset_action(identity):
     reset_type = flask.request.json.get('ResetType')
+    if app.config.get('SUSHY_EMULATOR_DISABLE_POWER_OFF') is True and \
+            reset_type in ('ForceOff', 'GracefulShutdown'):
+        raise error.BadRequest('Can not request power off transition. It is '
+                               'disabled via the '
+                               'SUSHY_EMULATOR_DISABLE_POWER_OFF configuration'
+                               'option.')
 
     app.systems.set_power_state(identity, reset_type)
 

sushy_tools/tests/unit/emulator/test_main.py

@@ -424,10 +424,10 @@ class SystemsTestCase(EmulatorTestCase):
         set_http_boot_uri.assert_called_once_with('http://test.url/boot.iso')
 
     @patch_resource('systems')
-    def test_system_reset_action(self, systems_mock):
+    def test_system_reset_action_ok(self, systems_mock):
         set_power_state = systems_mock.return_value.set_power_state
-        for reset_type in ('On', 'ForceOn', 'ForceOff', 'GracefulShutdown',
-                           'GracefulRestart', 'ForceRestart', 'Nmi'):
+        for reset_type in ('On', 'ForceOn', 'GracefulRestart', 'ForceRestart',
+                           'Nmi'):
             set_power_state.reset_mock()
             data = {'ResetType': reset_type}
             response = self.app.post(
@@ -438,6 +438,19 @@ class SystemsTestCase(EmulatorTestCase):
             set_power_state.assert_called_once_with('xxxx-yyyy-zzzz',
                                                     reset_type)
 
+    @patch_resource('systems')
+    def test_system_reset_action_fail(self, systems_mock):
+        self.app.application.config['SUSHY_EMULATOR_DISABLE_POWER_OFF'] = True
+        print(self.app.application.config)
+
+        for reset_type in ('ForceOff', 'GracefulShutdown'):
+            data = {'ResetType': reset_type}
+            response = self.app.post(
+                '/redfish/v1/Systems/xxxx-yyyy-zzzz/Actions/'
+                'ComputerSystem.Reset',
+                json=data)
+            self.assertEqual(400, response.status_code)
+
     @patch_resource('indicators')
     @patch_resource('systems')
     def test_system_indicator_set_ok(self, systems_mock, indicators_mock):