---
# 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: Stop services
  service:
    name: "{{ item.service_name }}"
    enabled: yes
    state: "stopped"
    daemon_reload: "{{ (ansible_service_mgr == 'systemd') | ternary('yes', omit) }}"
  with_items: "{{ filtered_neutron_services }}"
  register: _stop
  until: _stop | success
  retries: 5
  delay: 2
  listen: "Restart neutron services"

# NOTE(cloudnull):
# When installing or upgrading it is possible that an old metadata proxy process will not
#  be restarted by the metadata agent when a version changes. To fix it the ns-metadata
#  proxy pids are killed if they're not running the current tag. Once the old processeses
#  are removed the metadata agent will respawn the missing process within 60 seconds using
#  the correct code.
- name: Run ns-metadata-proxy process cleanup
  shell: |
    for ns_pid in $(pgrep neutron-ns-meta); do
      echo $(readlink -f "/proc/$ns_pid/exe") | grep -qv "{{ neutron_venv_tag }}"
      if [ $? -eq 0 ]; then
        if kill -9 "$ns_pid"; then
          logger -s "old metadata proxy pid found and has been cleaned up on: \"$ns_pid\""
        fi
      fi
    done
  when: "'neutron-metadata-agent' in (filtered_neutron_services | map(attribute='service_key') | list)"
  listen: "Restart neutron services"

# Note (odyssey4me):
# The policy.json file is currently read continually by the services
# and is not only read on service start. We therefore cannot template
# directly to the file read by the service because the new policies
# may not be valid until the service restarts. This is particularly
# important during a major upgrade. We therefore only put the policy
# file in place after the service has been stopped.
#
- name: Copy new policy file into place
  copy:
    src: "{{ neutron_conf_dir }}/policy.json-{{ neutron_venv_tag }}"
    dest: "{{ neutron_conf_dir }}/policy.json"
    owner: "root"
    group: "{{ neutron_system_group_name }}"
    mode: "0640"
    remote_src: yes
  listen: "Restart neutron services"

- name: Perform a DB contract
  command: "{{ neutron_bin }}/neutron-db-manage upgrade --contract"
  become: yes
  become_user: "{{ neutron_system_user_name }}"
  delegate_to: "{{ groups[neutron_services['neutron-server']['group']][0] }}"
  when:
    - "ansible_local['openstack_ansible']['neutron']['need_db_contract'] | bool"
    - "neutron_services['neutron-server']['group'] in group_names"
    - "inventory_hostname == ((groups[neutron_services['neutron-server']['group']] | intersect(ansible_play_hosts)) | list)[0]"
  listen: "Restart neutron services"

- name: Start services
  service:
    name: "{{ item.service_name }}"
    enabled: yes
    state: "started"
    daemon_reload: "{{ (ansible_service_mgr == 'systemd') | ternary('yes', omit) }}"
  with_items: "{{ filtered_neutron_services }}"
  register: _start
  until: _start | success
  retries: 5
  delay: 2
  listen: "Restart neutron services"