Automatically configure Monasca Grafana datasource

In Kolla, an OpenStack project is created to store logs and metrics
harvested from the control plane by Monasca. This commit enables
the Monasca Datasource in the Grafana organisation which maps to
this OpenStack control plane project. What this means in practice
is that if a user logs into Monasca Grafana, and has access to the
the control plane project, they will immediately be able to create
dashboards using data from Monasca which has been gathered from the
control plane.

Support to enable creation of this datasource for other OpenStack
projects can be added in a separate commit.

Partially-Implements: blueprint monasca-grafana
Change-Id: I03e741ddb1c582b7280c64637ed3e3683df6419b

ansible/roles/monasca/defaults/main.yml

@@ -220,6 +220,19 @@ monasca_metric_pipeline_threads: 2
 # authentication. This must *not* match any OpenStack username.
 monasca_grafana_admin_username: "grafana_local_admin"
 
+monasca_grafana_data_sources:
+  monasca:
+    enabled: True
+    data:
+      name: "Monasca API"
+      type: "monasca-datasource"
+      access: "proxy"
+      url: "{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_api_port }}"
+      isDefault: True
+      basicAuth: false
+      jsonData:
+        keystoneAuth: True
+
 ####################
 # Docker
 ####################

ansible/roles/monasca/tasks/deploy.yml

@@ -34,3 +34,5 @@
         inventory_hostname in groups['monasca-thresh'] or
         inventory_hostname in groups['monasca-notification'] or
         inventory_hostname in groups['monasca-persister']
+
+- include_tasks: post_config.yml

ansible/roles/monasca/tasks/post_config.yml

@@ -0,0 +1,90 @@
+---
+- name: Wait for Monasca Grafana to load
+  uri:
+    url: "{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/login"
+    status_code: 200
+  register: result
+  until: result.get('status') == 200
+  retries: 10
+  delay: 2
+  run_once: true
+
+- name: Define Monasca Grafana control plane organisation name
+  set_fact:
+    monasca_grafana_control_plane_org: "{{ monasca_control_plane_project }}@{{ default_project_domain_name }}"
+
+- name: List Monasca Grafana organisations
+  uri:
+    method: GET
+    url: '{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/api/orgs'
+    user: '{{ monasca_grafana_admin_username }}'
+    password: '{{ monasca_grafana_admin_password }}'
+    return_content: true
+    force_basic_auth: true
+  register: monasca_grafana_orgs
+
+- name: Create default control plane organisation if it doesn't exist
+  uri:
+    method: POST
+    url: '{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/api/orgs'
+    user: '{{ monasca_grafana_admin_username }}'
+    password: '{{ monasca_grafana_admin_password }}'
+    body_format: json
+    body:
+      name: '{{ monasca_grafana_control_plane_org }}'
+    force_basic_auth: true
+  when: monasca_grafana_control_plane_org not in monasca_grafana_orgs.json|map(attribute='name')|unique
+
+- name: Lookup Monasca Grafana control plane organisation ID
+  uri:
+    method: GET
+    url: '{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/api/orgs/name/{{ monasca_grafana_control_plane_org }}'
+    user: '{{ monasca_grafana_admin_username }}'
+    password: '{{ monasca_grafana_admin_password }}'
+    return_content: true
+    force_basic_auth: true
+  register: monasca_grafana_conf_org
+
+- name: Add {{ monasca_grafana_admin_username }} user to control plane organisation
+  uri:
+    method: POST
+    url: '{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/api/orgs/{{ monasca_grafana_conf_org.json.id }}/users'
+    user: '{{ monasca_grafana_admin_username }}'
+    password: '{{ monasca_grafana_admin_password }}'
+    body:
+      loginOrEmail: '{{ monasca_grafana_admin_username }}'
+      role: Admin
+    force_basic_auth: true
+    body_format: json
+    status_code: 200, 409
+  register: monasca_grafana_add_user_response
+  run_once: True
+  changed_when: monasca_grafana_add_user_response.status == 200
+  failed_when: monasca_grafana_add_user_response.status not in [200, 409] or
+               monasca_grafana_add_user_response.status == 409 and ("User is already" not in  monasca_grafana_add_user_response.json.message|default(""))
+
+- name: Switch Monasca Grafana to the control plane organisation
+  uri:
+    method: POST
+    url: '{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/api/user/using/{{ monasca_grafana_conf_org.json.id }}'
+    user: '{{ monasca_grafana_admin_username }}'
+    password: '{{ monasca_grafana_admin_password }}'
+    force_basic_auth: true
+
+- name: Enable Monasca Grafana datasource for control plane organisation
+  uri:
+    url: "{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ monasca_grafana_server_port }}/api/datasources"
+    method: POST
+    user: "{{ monasca_grafana_admin_username }}"
+    password: "{{ monasca_grafana_admin_password }}"
+    body: "{{ item.value.data | to_json }}"
+    body_format: json
+    force_basic_auth: true
+    status_code: 200, 409
+  register: monasca_grafana_datasource_response
+  run_once: True
+  changed_when: monasca_grafana_datasource_response.status == 200
+  failed_when: monasca_grafana_datasource_response.status not in [200, 409] or
+               monasca_grafana_datasource_response.status == 409 and ("Data source with same name already exists" not in  monasca_grafana_datasource_response.json.message|default(""))
+  with_dict: "{{ monasca_grafana_data_sources }}"
+  when: item.value.enabled | bool