---
# 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 glance facts
  hosts: "glance_all"
  gather_facts: "{{ osa_gather_facts | default(True) }}"
  tags:
    - always

- name: Install glance services
  hosts: "glance_all"
  serial: "{{ glance_api_serial | default(['1', '100%']) }}"
  gather_facts: false
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  vars_files:
    - "defaults/repo_packages/openstack_services.yml"
    - "defaults/{{ install_method }}_install.yml"
  tags:
    - glance
  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.
    - include_tasks: common-tasks/haproxy-endpoint-manage.yml
      vars:
        haproxy_backend: glance_api-back
        haproxy_state: disabled
      when:
        - "'glance_api' in group_names"
        - "groups['glance_api'] | length > 1"

    - name: Configure container (non-nfs)
      include_tasks: "common-tasks/os-{{ container_tech | default('lxc') }}-container-setup.yml"
      vars:
        list_of_bind_mounts: "{{ glance_container_bind_mounts }}"
      when:
        - not is_metal
        - glance_default_store == "file"
        - (glance_nfs_client is not defined) or (glance_nfs_client | length == 0)

    - name: Configure container (nfs)
      include_tasks: "common-tasks/os-{{ container_tech | default('lxc') }}-container-setup.yml"
      when:
        - not is_metal
        - (glance_default_store != "file") or (glance_nfs_client is defined)

    - include_tasks: common-tasks/unbound-clients.yml
      when:
        - hostvars['localhost']['resolvconf_enabled'] | bool

  roles:
    - role: "os_glance"
    - role: "system_crontab_coordination"
      tags:
        - crontab

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




# These facts are set against the deployment host to ensure that
# they are fast to access. This is done in preference to setting
# them against each target as the hostvars extraction will take
# a long time if executed against a large inventory.
- name: Refresh local facts after all software changes are made
  hosts: glance_all
  gather_facts: no
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  vars_files:
    - "defaults/{{ install_method }}_install.yml"
  tags:
    - glance
  tasks:
    - name: refresh local facts
      setup:
        filter: ansible_local
        gather_subset: "!all"

    # This variable contains the values of the local fact set for the glance
    # venv tag for all hosts in the 'glance_all' host group.
    - name: Gather software version list
      set_fact:
        glance_all_software_versions: "{{ (groups['glance_all'] |
                                           map('extract', hostvars, ['ansible_local', 'openstack_ansible', 'glance', 'venv_tag'])) |
                                           list }}"
      delegate_to: localhost
      run_once: yes

    # This variable outputs a boolean value which is True when
    # glance_all_software_versions contains a list of defined
    # values. If they are not defined, it means that not all
    # hosts have their software deployed yet.
    - name: Set software deployed fact
      set_fact:
        glance_all_software_deployed: "{{ (glance_all_software_versions | select('defined')) | list == glance_all_software_versions }}"
      delegate_to: localhost
      run_once: yes

    # This variable outputs a boolean when all the values in
    # glance_all_software_versions are the same and the software
    # has been deployed to all hosts in the group.
    - name: Set software updated fact
      set_fact:
        glance_all_software_updated: "{{ ((glance_all_software_versions | unique) | length == 1) and (glance_all_software_deployed | bool) }}"
      delegate_to: localhost
      run_once: yes


- name: Restart glance API to ensure new RPC object version is used
  hosts: glance_all
  gather_facts: no
  serial: "{{ glance_api_serial | default(['1','100%']) }}"
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  vars_files:
    - "defaults/{{ install_method }}_install.yml"
  tags:
    - glance
  tasks:
    # In order to ensure that the service restart does not
    # cause an unexpected outage, we drain the load balancer
    # back end for this container.
    - include: common-tasks/haproxy-endpoint-manage.yml
      vars:
        haproxy_backend: glance_api-back
        haproxy_state: disabled
      when:
        - "glance_all_software_updated | bool"
        - "ansible_local['openstack_ansible']['glance']['need_service_restart'] | bool"
        - "groups['glance_api'] | length > 1"

    - name: Execute glance service restart
      include: common-tasks/restart-service.yml
      vars:
        service_name: "glance-api"
        service_action: "restarted"
        service_fact: "glance"
      when:
        - "glance_all_software_updated | bool"
        - "ansible_local['openstack_ansible']['glance']['need_service_restart'] | bool"

    # Now that service restart is done, we can set
    # the load balancer back end for this container
    # to available again.
    - include: common-tasks/haproxy-endpoint-manage.yml
      vars:
        haproxy_backend: glance_api-back
        haproxy_state: enabled
      when: "groups['glance_api'] | length > 1"