Support deploying Monasca Notification engine

The Monasca Notification engine generates alerts such as Slack
notifications from alerts.

Change-Id: I84861d5feefe6b6f38acc4dd71e94c386d40b562
Partially-Implements: blueprint monasca-roles

ansible/inventory/all-in-one

@@ -464,6 +464,9 @@ monasca
 [monasca-thresh:children]
 monasca
 
+[monasca-notification:children]
+monasca
+
 # Storm
 [storm-worker:children]
 storm

ansible/inventory/multinode

@@ -473,6 +473,9 @@ monasca
 [monasca-thresh:children]
 monasca
 
+[monasca-notification:children]
+monasca
+
 # Storm
 [storm-worker:children]
 storm

ansible/roles/monasca/defaults/main.yml

@@ -61,6 +61,16 @@ monasca_services:
       - "monasca_thresh:/var/lib/monasca-thresh/"
       - "kolla_logs:/var/log/kolla"
     dimensions: "{{ monasca_thresh_dimensions }}"
+  monasca-notification:
+    container_name: monasca_notification
+    group: monasca-notification
+    enabled: true
+    image: "{{ monasca_notification_image_full }}"
+    volumes:
+      - "{{ node_config_directory }}/monasca-notification/:{{ container_config_directory }}/:ro"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "kolla_logs:/var/log/kolla"
+    dimensions: "{{ monasca_notification_dimensions }}"
 
 ####################
 # Databases
@@ -119,12 +129,17 @@ monasca_thresh_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{
 monasca_thresh_tag: "{{ monasca_tag }}"
 monasca_thresh_image_full: "{{ monasca_thresh_image }}:{{ monasca_thresh_tag }}"
 
+monasca_notification_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ monasca_install_type }}-monasca-notification"
+monasca_notification_tag: "{{ monasca_tag }}"
+monasca_notification_image_full: "{{ monasca_notification_image }}:{{ monasca_notification_tag }}"
+
 monasca_api_dimensions: "{{ default_container_dimensions }}"
 monasca_log_api_dimensions: "{{ default_container_dimensions }}"
 monasca_log_transformer_dimensions: "{{ default_container_dimensions }}"
 monasca_log_persister_dimensions: "{{ default_container_dimensions }}"
 monasca_log_metrics_dimensions: "{{ default_container_dimensions }}"
 monasca_thresh_dimensions: "{{ default_container_dimensions }}"
+monasca_notification_dimensions: "{{ default_container_dimensions }}"
 
 
 ####################

ansible/roles/monasca/handlers/main.yml

@@ -130,3 +130,23 @@
       or monasca_thresh_confs.changed | bool
       or monasca_thresh_storm_conf.changed | bool
       or monasca_thresh_container.changed | bool
+
+- name: Restart monasca-notification container
+  vars:
+    service_name: "monasca-notification"
+    service: "{{ monasca_services[service_name] }}"
+    config_json: "{{ monasca_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    monasca_notification_container: "{{ check_monasca_containers.results|selectattr('item.key', 'equalto', service_name)|first }}"
+  kolla_docker:
+    action: "recreate_or_restart_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ service.container_name }}"
+    image: "{{ service.image }}"
+    volumes: "{{ service.volumes }}"
+  when:
+    - kolla_action != "config"
+    - inventory_hostname in groups[service.group]
+    - service.enabled | bool
+    - config_json.changed | bool
+      or monasca_notification_confs.changed | bool
+      or monasca_notification_container.changed | bool

ansible/roles/monasca/tasks/config.yml

@@ -216,6 +216,26 @@
   notify:
     - Restart monasca-thresh container
 
+- name: Copying over monasca-notification config
+  vars:
+    service: "{{ monasca_services['monasca-notification'] }}"
+  merge_configs:
+    sources:
+      - "{{ role_path }}/templates/monasca-notification/{{ item }}.j2"
+      - "{{ node_custom_config }}/monasca/{{ item }}"
+      - "{{ node_custom_config }}/monasca/{{ inventory_hostname }}/{{ item }}"
+    dest: "{{ node_config_directory }}/monasca-notification/{{ item }}"
+    mode: "0660"
+  become: true
+  register: monasca_notification_confs
+  with_items:
+    - notification.conf
+  when:
+    - inventory_hostname in groups[service['group']]
+    - service.enabled | bool
+  notify:
+    - Restart monasca-notification container
+
 - name: Check monasca containers
   become: true
   kolla_docker:

ansible/roles/monasca/tasks/deploy.yml

@@ -9,7 +9,8 @@
         inventory_hostname in groups['monasca-log-transformer'] or
         inventory_hostname in groups['monasca-log-persister'] or
         inventory_hostname in groups['monasca-log-metrics'] or
-        inventory_hostname in groups['monasca-thresh']
+        inventory_hostname in groups['monasca-thresh'] or
+        inventory_hostname in groups['monasca-notification']
 
 - include_tasks: bootstrap.yml
   when: inventory_hostname in groups['monasca-api']
@@ -23,4 +24,5 @@
         inventory_hostname in groups['monasca-log-transformer'] or
         inventory_hostname in groups['monasca-log-persister'] or
         inventory_hostname in groups['monasca-log-metrics'] or
-        inventory_hostname in groups['monasca-thresh']
+        inventory_hostname in groups['monasca-thresh'] or
+        inventory_hostname in groups['monasca-notification']

ansible/roles/monasca/templates/monasca-notification/monasca-notification.json.j2

@@ -0,0 +1,18 @@
+{
+    "command": "monasca-notification /etc/monasca/notification.conf",
+    "config_files": [
+        {
+            "source": "{{ container_config_directory }}/notification.conf",
+            "dest": "/etc/monasca/notification.conf",
+            "owner": "monasca",
+            "perm": "0600"
+        }
+    ],
+    "permissions": [
+        {
+            "path": "/var/log/kolla/monasca",
+            "owner": "monasca:kolla",
+            "recurse": true
+        }
+    ]
+}

ansible/roles/monasca/templates/monasca-notification/notification.conf.j2

@@ -0,0 +1,25 @@
+[DEFAULT]
+log_file = monasca-notification.log
+log_dir = /var/log/kolla/monasca
+debug = {{ monasca_logging_debug }}
+
+[kafka]
+url = {{ monasca_kafka_servers }}
+alarm_topic = {{ monasca_alarm_state_transitions_topic }}
+notification_topic = {{ monasca_alarm_notifications_topic }}
+notification_retry_topic = {{ monasca_alarm_notifications_retry_topic }}
+periodic = {{ monasca_periodic_notifications_period }}:{{ monasca_periodic_notifications_topic }}
+
+[mysql]
+host = {{ database_address }}
+port = {{ database_port }}
+user = {{ monasca_database_user }}
+passwd = {{ monasca_database_password }}
+db = {{ monasca_database_name }}
+
+[statsd]
+# TODO(dszumski): Enable when statsd is deployed
+enable = false
+
+[zookeeper]
+url = {{ monasca_zookeeper_servers }}

releasenotes/notes/add-monasca-notification-03283c42a8df3d71.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Add support for deploying the Monasca Notification service. The
+    Notification service is responsible for notifiying users when
+    an alert, as defined via the Monasca API, is generated by the
+    Monasca Thresh topology.