---
# 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 nova facts
  hosts: nova_all
  gather_facts: false
  tags:
    - always
  tasks:
    - name: Gather minimal facts for nova
      setup:
        gather_subset:
          - "!all"
          - min
      when: osa_gather_facts | default(True)

    - name: Gather additional facts for nova
      setup:
        gather_subset: "{{ nova_gather_subset | default('processor_count') }}"
        filter: "{{ nova_gather_filter | default('ansible_processor*') }}"
      when: osa_gather_facts | default(True)

- name: "Config haproxy service"
  import_playbook: openstack.osa.haproxy_service_config
  vars:
    service_group:
      - nova_api_os_compute
      - nova_api_metadata
      - nova_console
      - nova_ironic_console
    service_variable: "nova_haproxy_services"
  when:
    - groups['nova_all'] | length > 0
    - groups['haproxy'] | length > 0
  tags:
    - haproxy-service-config

- name: Install nova control-plane services
  hosts: "nova_conductor:nova_scheduler:nova_api_os_compute:nova_api_metadata:nova_console"
  serial: "{{ nova_conductor_serial | default(['1', '100%']) }}"
  gather_facts: false
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  pre_tasks:
    - name: Setup installation variables
      include_role:
        name: openstack.osa.install_defaults
        defaults_from: "{{ install_method }}"
        public: true
        apply:
          tags:
            - always
      tags:
        - always

    # Enable execution of ceph_client on the nova compute hosts if cinder RBD
    # backends are used. This is necessary to ensure that volume-backed Nova
    # instances can function when RBD is the volume backend.
    - name: Set cinder RBD inuse fact
      set_fact:
        nova_cinder_rbd_inuse: "{{ True in groups['cinder_volume'] | map('extract', hostvars, 'cinder_backend_rbd_inuse') }}"
      delegate_to: localhost
      delegate_facts: True
      when:
        - "'nova_compute' in group_names"
        - "inventory_hostname == ((groups['nova_compute'] | intersect(ansible_play_hosts)) | list)[0]"
        - "hostvars['localhost']['nova_cinder_rbd_inuse'] is not defined"
      tags:
        - always
    # 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_role:
        name: openstack.osa.haproxy_endpoint_manage
        apply:
          tags:
            - always
      vars:
        haproxy_backend: "{{ backend_name }}-back"
        haproxy_state: disabled
      loop_control:
        loop_var: backend_name
      when:
        - "backend_name in group_names"
        - "groups[backend_name] | length > 1"
      with_items:
        - "nova_api_metadata"
        - "nova_api_os_compute"
        - "nova_console"
      tags:
        - always

    - name: Configure container
      include_role:
        name: "openstack.osa.{{ container_tech | default('lxc') }}_container_setup"
      when: not is_metal
      vars:
        extra_container_config_no_restart:
          - "lxc.start.order=39"

    - name: Including unbound-clients tasks
      include_role:
        name: openstack.osa.unbound_clients
      when:
        - hostvars['localhost']['resolvconf_enabled'] | bool

  roles:
    - role: "os_nova"
      nova_management_address: "{{ management_address }}"
      nova_cinder_rbd_inuse: "{{ hostvars['localhost']['nova_cinder_rbd_inuse'] | default(False) }}"

    - role: "openstack.osa.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.
    - name: Enabling haproxy backends
      include_role:
        name: openstack.osa.haproxy_endpoint_manage
        apply:
          tags:
            - always
      vars:
        haproxy_backend: "{{ backend_name }}-back"
        haproxy_state: enabled
      loop_control:
        loop_var: backend_name
      when:
        - "backend_name in group_names"
        - "groups[backend_name] | length > 1"
      with_items:
        - "nova_api_metadata"
        - "nova_api_os_compute"
        - "nova_console"
      tags:
        - always


- name: Install nova compute services
  hosts: "nova_compute:!nova_conductor:!nova_scheduler:!nova_api_os_compute:!nova_api_metadata:!nova_console"
  serial: "{{ nova_compute_serial | default('100%') }}"
  gather_facts: false
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  pre_tasks:
    - name: Setup installation variables
      include_role:
        name: openstack.osa.install_defaults
        defaults_from: "{{ install_method }}"
        public: true

    # Enable execution of ceph_client on the nova compute hosts if cinder RBD
    # backends are used. This is necessary to ensure that volume-backed Nova
    # instances can function when RBD is the volume backend.
    - name: Set cinder RBD inuse fact
      set_fact:
        nova_cinder_rbd_inuse: "{{ True in groups['cinder_volume'] | map('extract', hostvars, 'cinder_backend_rbd_inuse') }}"
      delegate_to: localhost
      delegate_facts: True
      when:
        - "'nova_compute' in group_names"
        - "inventory_hostname == ((groups['nova_compute'] | intersect(ansible_play_hosts)) | list)[0]"
        - "hostvars['localhost']['nova_cinder_rbd_inuse'] is not defined"
      tags:
        - always

    - name: Configure container
      include_role:
        name: "openstack.osa.{{ container_tech | default('lxc') }}_container_setup"
      when: not is_metal
      vars:
        extra_container_config_no_restart:
          - "lxc.start.order=39"

    - name: Including unbound-clients tasks
      include_role:
        name: openstack.osa.unbound_clients
      when:
        - hostvars['localhost']['resolvconf_enabled'] | bool

    - name: Add nbd devices to the compute
      shell: |
        for i in /dev/nbd*;do
          lxc-device -n {{ container_name }} add $i $i
        done
      failed_when: false
      register: device_add
      changed_when: >
        'added' in device_add.stdout.lower()
      delegate_to: "{{ physical_host }}"
      when:
        - container_tech | default('lxc') == 'lxc'
        - "'nova_compute' in group_names"
        - "not is_metal | bool"
      tags:
        - always

    - name: Add net/tun device to the compute # noqa: no-changed-when
      command: |
        lxc-device -n {{ container_name }} add /dev/net/tun /dev/net/tun
      delegate_to: "{{ physical_host }}"
      when:
        - container_tech | default('lxc') == 'lxc'
        - "'nova_compute' in group_names"
        - "not is_metal | bool"
      tags:
        - always

    - name: Check if kvm device exists
      stat:
        path: /dev/kvm
      delegate_to: "{{ physical_host }}"
      register: kvm_device
      when:
        - container_tech | default('lxc') == 'lxc'
        - "'nova_compute' in group_names"
        - "not is_metal | bool"
      tags:
        - always

    - name: Add kvm device to the compute
      command: |
        lxc-device -n {{ container_name }} add /dev/kvm /dev/kvm
      delegate_to: "{{ physical_host }}"
      register: device_add
      failed_when: false
      changed_when: >
        'added' in device_add.stdout.lower()
      when:
        - container_tech | default('lxc') == 'lxc'
        - "'nova_compute' in group_names"
        - "not is_metal | bool"
        - "'ischr' in kvm_device.stat and kvm_device.stat.ischr | bool"
      tags:
        - always

  roles:
    - role: "os_nova"
      nova_management_address: "{{ management_address }}"
      nova_cinder_rbd_inuse: "{{ hostvars['localhost']['nova_cinder_rbd_inuse'] | default(False) }}"

    - role: "openstack.osa.system_crontab_coordination"
      tags:
        - crontab

- name: Finalize nova setup
  hosts: nova_conductor[0]
  gather_facts: false
  user: root
  environment: "{{ deployment_environment_variables | default({}) }}"
  tasks:
    - name: Setup installation variables
      include_role:
        name: openstack.osa.install_defaults
        defaults_from: "{{ install_method }}"
        public: true

    - name: Running db_post_setup tasks from the role
      import_role:
        name: os_nova
        tasks_from: nova_db_post_setup.yml