---
# Copyright 2014, Rackspace US, Inc.
#
# 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.

- name: Gather gnocchi facts
  hosts: gnocchi_all
  gather_facts: "{{ osa_gather_facts | default(True) }}"
  tasks:
    - name: Gather additional facts
      include_tasks: "common-tasks/gather-hardware-facts.yml"
      when: osa_gather_facts | default(True)
  tags:
    - always

- name: Configure haproxy services
  import_playbook: openstack.osa.haproxy_service_config
  vars:
    service_group: gnocchi_api
    service_variable: "gnocchi_haproxy_services"
  when: groups[service_group] | length > 0
  tags:
    - haproxy-service-config

- name: Install Gnocchi components
  hosts: gnocchi_all
  gather_facts: false
  serial: "{{ gnocchi_serial | default(['1','100%']) }}"
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  vars_files:
    - "defaults/{{ install_method }}_install.yml"
  tags:
    - gnocchi
  pre_tasks:
    # In order to ensure that any container, software or
    # config file changes which causes a container/service
    # restart do not cause an unexpected outage, we drain
    # the load balancer back end for this container.
    - name: Disabling haproxy backends
      include_tasks: common-tasks/haproxy-endpoint-manage.yml
      vars:
        haproxy_backend: gnocchi-back
        haproxy_state: disabled
      when:
        - "'gnocchi_all' in group_names"
        - "groups['gnocchi_all'] | length > 1"

    - name: Including container-setup tasks
      include_tasks: "common-tasks/os-{{ container_tech | default('lxc') }}-container-setup.yml"
      vars:
        list_of_bind_mounts: "{{ gnocchi_container_bind_mounts }}"
      when:
        - not is_metal
        - (gnocchi_storage_driver | default('file')) != "file"

    - name: Including unbound-clients tasks
      include_tasks: common-tasks/unbound-clients.yml
      when:
        - hostvars['localhost']['resolvconf_enabled'] | bool
  roles:
    - role: "os_gnocchi"

  post_tasks:
    # Now that container changes are done, we can set
    # the load balancer back end for this container
    # to available again.
    - name: Enabling haproxy backends
      include_tasks: common-tasks/haproxy-endpoint-manage.yml
      vars:
        haproxy_backend: gnocchi-back
        haproxy_state: enabled
      when:
        - "'gnocchi_all' in group_names"
        - "groups['gnocchi_all'] | length > 1"