Introduce support for aodh chart overrides

Add aodh helm chart override support for:
 - docker image source
 - user passwords
 - region name configuration in service credentials

Change-Id: I5b983fbf09196260ea6de0b7cbf5783320cbbc9f
Story: 2003909
Task: 27083
Signed-off-by: Angie Wang <angie.wang@windriver.com>

sysinv/sysinv/sysinv/sysinv/common/constants.py

@@ -1351,6 +1351,7 @@ SYSTEM_SECURITY_FEATURE_SPECTRE_MELTDOWN_DEFAULT_OPTS = SYSTEM_SECURITY_FEATURE_
 
 # Helm: Supported charts:
 # These values match the names in the chart package's Chart.yaml
+HELM_CHART_AODH = 'aodh'
 HELM_CHART_BARBICAN = 'barbican'
 HELM_CHART_CEILOMETER = 'ceilometer'
 HELM_CHART_CINDER = 'cinder'
@@ -1375,6 +1376,7 @@ HELM_CHART_RABBITMQ = 'rabbitmq'
 HELM_CHART_RBD_PROVISIONER = 'rbd-provisioner'
 
 SUPPORTED_HELM_CHARTS = [
+    HELM_CHART_AODH,
     HELM_CHART_BARBICAN,
     HELM_CHART_CEILOMETER,
     HELM_CHART_CINDER,
@@ -1434,6 +1436,7 @@ SUPPORTED_HELM_APP_CHARTS = {
         HELM_CHART_GNOCCHI,
         HELM_CHART_CEILOMETER,
         HELM_CHART_PANKO,
+        HELM_CHART_AODH
     ],
     HELM_APP_OSHELM_DEVELOPER: [
         HELM_CHART_INGRESS,

sysinv/sysinv/sysinv/sysinv/helm/aodh.py

@@ -0,0 +1,100 @@
+#
+# Copyright (c) 2018 Wind River Systems, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+from sysinv.common import constants
+from sysinv.common import exception
+from sysinv.openstack.common import log as logging
+from . import common
+from . import openstack
+
+LOG = logging.getLogger(__name__)
+
+
+class AodhHelm(openstack.OpenstackBaseHelm):
+    """Class to encapsulate helm operations for the aodh chart"""
+
+    CHART = constants.HELM_CHART_AODH
+    SUPPORTED_NAMESPACES = [
+        common.HELM_NS_OPENSTACK
+    ]
+
+    SERVICE_NAME = 'aodh'
+    AUTH_USERS = ['aodh']
+
+    @property
+    def docker_repo_source(self):
+        return common.DOCKER_SRC_STX
+
+    def get_namespaces(self):
+        return self.SUPPORTED_NAMESPACES
+
+    def get_overrides(self, namespace=None):
+        overrides = {
+            common.HELM_NS_OPENSTACK: {
+                'images': self._get_images_overrides(),
+                'conf': self._get_conf_overrides(),
+                'endpoints': self._get_endpoints_overrides()
+            }
+        }
+
+        if namespace in self.SUPPORTED_NAMESPACES:
+            return overrides[namespace]
+        elif namespace:
+            raise exception.InvalidHelmNamespace(chart=self.CHART,
+                                                 namespace=namespace)
+        else:
+            return overrides
+
+    def _get_images_overrides(self):
+        heat_image = self._operator.chart_operators[
+            constants.HELM_CHART_HEAT].docker_image
+        return {
+            'tags': {
+                'bootstrap': heat_image,
+                'db_drop': heat_image,
+                'db_init': self.docker_image,
+                'aodh_api': self.docker_image,
+                'aodh_alarms_cleaner': self.docker_image,
+                'aodh_db_sync': self.docker_image,
+                'aodh_evaluator': self.docker_image,
+                'aodh_listener': self.docker_image,
+                'aodh_notifier': self.docker_image,
+                'ks_endpoints': heat_image,
+                'ks_service': heat_image,
+                'ks_user': heat_image,
+            }
+        }
+
+    def _get_conf_overrides(self):
+        return {
+            'aodh': {
+                'service_credentials': {
+                    'region_name': self._region_name()
+                }
+            }
+        }
+
+    def _get_endpoints_overrides(self):
+        return {
+            'identity': {
+                'auth': self._get_endpoints_identity_overrides(
+                    self.SERVICE_NAME, self.AUTH_USERS),
+            },
+            'oslo_cache': {
+                'auth': {
+                    'memcached_secret_key':
+                        self._get_common_password('auth_memcache_key')
+                }
+            },
+            'oslo_db': {
+                'auth': self._get_endpoints_oslo_db_overrides(
+                    self.SERVICE_NAME, self.AUTH_USERS)
+            },
+            'oslo_messaging': {
+                'auth': self._get_endpoints_oslo_messaging_overrides(
+                    self.SERVICE_NAME, self.AUTH_USERS)
+            },
+        }

sysinv/sysinv/sysinv/sysinv/helm/helm.py

@@ -23,6 +23,7 @@ from . import common
 
 # Import Chart Override Helpers:
 # Chart source: https://github.com/openstack/openstack-helm.git
+from . import aodh
 from . import barbican
 from . import ceilometer
 from . import cinder
@@ -90,6 +91,7 @@ class HelmOperator(object):
 
         # register chart operators for lookup
         self.chart_operators = {
+            constants.HELM_CHART_AODH: aodh.AodhHelm(self),
             constants.HELM_CHART_BARBICAN: barbican.BarbicanHelm(self),
             constants.HELM_CHART_CEILOMETER: ceilometer.CeilometerHelm(self),
             constants.HELM_CHART_CINDER: cinder.CinderHelm(self),