Add functional tests for event engine functions

This test class doesn't fully test event engine functions, because
we can not send real notifications to the internal message queue to
trigger the specified workflows.

So, before notification is supported in Mistral, we can only test the API
functions.

Change-Id: I4289dac17f19cd2ce3c214c5625f3b7d9db605de
Implements: blueprint event-notification-trigger

devstack/plugin.sh

@@ -143,11 +143,12 @@ function install_mistral_pythonclient {
 
 # start_mistral - Start running processes, including screen
 function start_mistral {
-    if is_service_enabled mistral-api && is_service_enabled mistral-engine && is_service_enabled mistral-executor ; then
+    if is_service_enabled mistral-api && is_service_enabled mistral-engine && is_service_enabled mistral-executor && is_service_enabled mistral-event-engine ; then
         echo_summary "Installing all mistral services in separate processes"
         run_process mistral-api "$MISTRAL_BIN_DIR/mistral-server --server api --config-file $MISTRAL_CONF_DIR/mistral.conf"
         run_process mistral-engine "$MISTRAL_BIN_DIR/mistral-server --server engine --config-file $MISTRAL_CONF_DIR/mistral.conf"
         run_process mistral-executor "$MISTRAL_BIN_DIR/mistral-server --server executor --config-file $MISTRAL_CONF_DIR/mistral.conf"
+        run_process mistral-event-engine "$MISTRAL_BIN_DIR/mistral-server --server event-engine --config-file $MISTRAL_CONF_DIR/mistral.conf"
     else
         echo_summary "Installing all mistral services in one process"
         run_process mistral "$MISTRAL_BIN_DIR/mistral-server --server all --config-file $MISTRAL_CONF_DIR/mistral.conf"
@@ -158,7 +159,7 @@ function start_mistral {
 # stop_mistral - Stop running processes
 function stop_mistral {
     # Kill the Mistral screen windows
-    for serv in mistral mistral-api mistral-engine mistral-executor; do
+    for serv in mistral mistral-api mistral-engine mistral-executor mistral-event-engine; do
         stop_process $serv
     done
 }

devstack/settings

@@ -10,7 +10,7 @@
 # is an incorrect way to run services and all services by default will run in one screen
 
 
-enable_service mistral mistral-api mistral-engine mistral-executor
+enable_service mistral mistral-api mistral-engine mistral-executor mistral-event-engine
 
 
 # Set up default repos

mistral_tempest_tests/services/base.py

@@ -71,6 +71,7 @@ class MistralClientBase(rest_client.RestClient):
         self.triggers = []
         self.actions = []
         self.action_executions = []
+        self.event_triggers = []
 
     def get_list_obj(self, name):
         resp, body = self.get(name)

mistral_tempest_tests/services/v2/mistral_client.py

@@ -139,3 +139,26 @@ class MistralClientV2(base.MistralClientBase):
             self.action_executions.append(json.loads(body)['id'])
 
         return resp, json.loads(body)
+
+    def create_event_trigger(self, wf_id, exchange, topic, event, name='',
+                             wf_input=None, wf_params=None):
+        post_body = {
+            'workflow_id': wf_id,
+            'exchange': exchange,
+            'topic': topic,
+            'event': event,
+            'name': name
+        }
+
+        if wf_input:
+            post_body.update({'workflow_input': json.dumps(wf_input)})
+
+        if wf_params:
+            post_body.update({'workflow_params': json.dumps(wf_params)})
+
+        rest, body = self.post('event_triggers', json.dumps(post_body))
+
+        event_trigger = json.loads(body)
+        self.event_triggers.append(event_trigger['id'])
+
+        return rest, event_trigger

mistral_tempest_tests/tests/api/v2/test_event_triggers.py

@@ -0,0 +1,109 @@
+# Copyright 2016 Catalyst IT Limited
+#
+#    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 tempest.lib import exceptions
+from tempest import test
+
+from mistral_tempest_tests.tests import base
+
+EXCHANGE = 'openstack'
+EVENT_ENGINE_TOPIC = 'mistral_event_engine'
+EVENT = 'fake.event'
+
+
+class EventTriggerTestsV2(base.TestCase):
+    """Test class for event engine function.
+
+    NOTE: This test class doesn't fully test event engine functions, because
+    we can not send real notifications to the internal message queue to
+    trigger the specified workflows.
+
+    So, before notification is supported in Mistral, we can only test the API
+    functions.
+    """
+
+    _service = 'workflowv2'
+
+    def setUp(self):
+        super(EventTriggerTestsV2, self).setUp()
+        _, body = self.client.create_workflow('wf_v2.yaml')
+        self.wf_id = body['workflows'][0]['id']
+
+    def tearDown(self):
+        for tr in self.client.event_triggers:
+            self.client.delete_obj('event_triggers', tr)
+        self.client.event_triggers = []
+
+        for wf in self.client.workflows:
+            self.client.delete_obj('workflows', wf)
+        self.client.workflows = []
+
+        super(EventTriggerTestsV2, self).tearDown()
+
+    @test.attr(type='sanity')
+    def test_create_get_delete_event_trigger(self):
+        name = 'my_event_trigger'
+
+        resp, body = self.client.create_event_trigger(
+            self.wf_id, EXCHANGE, EVENT_ENGINE_TOPIC, EVENT, name)
+
+        trigger_id = body['id']
+
+        self.assertEqual(201, resp.status)
+        self.assertEqual(name, body['name'])
+
+        resp, body = self.client.get_list_obj('event_triggers')
+        self.assertEqual(200, resp.status)
+
+        trs_names = [tr['name'] for tr in body['event_triggers']]
+        self.assertIn(name, trs_names)
+
+        self.client.delete_obj('event_triggers', trigger_id)
+        self.client.event_triggers.remove(trigger_id)
+
+        _, body = self.client.get_list_obj('event_triggers')
+
+        trs_names = [tr['name'] for tr in body['event_triggers']]
+        self.assertNotIn(name, trs_names)
+
+    @test.attr(type='negative')
+    def test_create_event_trigger_without_necessary_param(self):
+        self.assertRaises(exceptions.BadRequest,
+                          self.client.create_event_trigger,
+                          self.wf_id, EXCHANGE, EVENT_ENGINE_TOPIC, '')
+
+    @test.attr(type='negative')
+    def test_create_event_trigger_with_nonexist_wf(self):
+        self.assertRaises(exceptions.BadRequest,
+                          self.client.create_event_trigger,
+                          'nonexist', EXCHANGE, EVENT_ENGINE_TOPIC, EVENT)
+
+    @test.attr(type='negative')
+    def test_create_event_trigger_duplicate(self):
+        name = 'my_event_trigger'
+
+        self.client.create_event_trigger(
+            self.wf_id, EXCHANGE, EVENT_ENGINE_TOPIC, EVENT, name)
+
+        self.assertRaises(exceptions.Conflict,
+                          self.client.create_event_trigger,
+                          self.wf_id, EXCHANGE, EVENT_ENGINE_TOPIC, EVENT)
+
+    @test.attr(type='negative')
+    def test_get_nonexistent_event_trigger(self):
+        fake_id = '123e4567-e89b-12d3-a456-426655440000'
+
+        self.assertRaises(exceptions.NotFound,
+                          self.client.get_object,
+                          'event_triggers', fake_id)

mistral_tempest_tests/tests/api/v2/test_workflows.py

@@ -250,6 +250,25 @@ class WorkflowTestsV2(base.TestCase):
             self.client.delete_obj('cron_triggers', tr_name)
             self.client.triggers.remove(tr_name)
 
+    @test.attr(type='negative')
+    def test_delete_wf_with_event_trigger_associate(self):
+        _, body = self.client.create_workflow('wf_v2.yaml')
+        wf_id = body['workflows'][0]['id']
+        resp, body = self.client.create_event_trigger(
+            wf_id, 'openstack', 'notification', 'fake.event')
+        self.assertEqual(201, resp.status)
+
+        try:
+            self.assertRaises(
+                exceptions.BadRequest,
+                self.client.delete_obj,
+                'workflows',
+                wf_id
+            )
+        finally:
+            self.client.delete_obj('event_triggers', body['id'])
+            self.client.event_triggers.remove(body['id'])
+
     @test.attr(type='negative')
     def test_delete_wf_with_trigger_associate_in_other_tenant(self):
         self.useFixture(lockutils.LockFixture('mistral-workflow'))