# Copyright 2016 Red Hat, 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.
#
# == Class: tripleo::profile::pacemaker::ceilometer
#
# Ceilometer Pacemaker HA profile for tripleo
#
# === Parameters
#
# [*bootstrap_node*]
#   (Optional) The hostname of the node responsible for bootstrapping tasks
#   Defaults to hiera('bootstrap_nodeid')
#
# [*step*]
#   (Optional) The current step in deployment. See tripleo-heat-templates
#   for more details.
#   Defaults to hiera('step')
#
class tripleo::profile::pacemaker::ceilometer (
  $bootstrap_node = hiera('bootstrap_nodeid'),
  $step           = hiera('step'),
) {

  include ::tripleo::profile::base::ceilometer

  $ceilometer_backend = downcase(hiera('ceilometer_backend', 'mongodb'))
  if $step >= 5 and $::hostname == downcase($bootstrap_node) {
    if $ceilometer_backend == 'mysql' {
      class { '::ceilometer::db::mysql':
        require => Exec['galera-ready'],
      }
    }

    # NOTE(emilien): the constraints won't live forever here as we're moving to
    # pacemaker-lite architecture.

    # Fedora doesn't know `require-all` parameter for constraints yet
    if $::operatingsystem == 'Fedora' {
      $redis_ceilometer_constraint_params = undef
    } else {
      $redis_ceilometer_constraint_params = 'require-all=false'
    }
    pacemaker::constraint::base { 'redis-then-ceilometer-central-constraint':
      constraint_type   => 'order',
      first_resource    => 'redis-master',
      second_resource   => "${::ceilometer::params::agent_central_service_name}-clone",
      first_action      => 'promote',
      second_action     => 'start',
      constraint_params => $redis_ceilometer_constraint_params,
      require           => [Pacemaker::Resource::Ocf['redis'],
                            Pacemaker::Resource::Service[$::ceilometer::params::agent_central_service_name]],
    }
    pacemaker::constraint::base { 'keystone-then-ceilometer-central-constraint':
      constraint_type => 'order',
      first_resource  => 'openstack-core-clone',
      second_resource => "${::ceilometer::params::agent_central_service_name}-clone",
      first_action    => 'start',
      second_action   => 'start',
      require         => [Pacemaker::Resource::Service[$::ceilometer::params::agent_central_service_name],
                          Pacemaker::Resource::Ocf['openstack-core']],
    }
    pacemaker::constraint::base { 'keystone-then-ceilometer-notification-constraint':
      constraint_type => 'order',
      first_resource  => 'openstack-core-clone',
      second_resource => "${::ceilometer::params::agent_notification_service_name}-clone",
      first_action    => 'start',
      second_action   => 'start',
      require         => [Pacemaker::Resource::Service[$::ceilometer::params::agent_central_service_name],
                          Pacemaker::Resource::Ocf['openstack-core']],
    }
    pacemaker::constraint::base { 'ceilometer-central-then-ceilometer-collector-constraint':
      constraint_type => 'order',
      first_resource  => "${::ceilometer::params::agent_central_service_name}-clone",
      second_resource => "${::ceilometer::params::collector_service_name}-clone",
      first_action    => 'start',
      second_action   => 'start',
      require         => [Pacemaker::Resource::Service[$::ceilometer::params::agent_central_service_name],
                          Pacemaker::Resource::Service[$::ceilometer::params::collector_service_name]],
    }
    pacemaker::constraint::base { 'ceilometer-collector-then-ceilometer-api-constraint':
      constraint_type => 'order',
      first_resource  => "${::ceilometer::params::collector_service_name}-clone",
      second_resource => "${::ceilometer::params::api_service_name}-clone",
      first_action    => 'start',
      second_action   => 'start',
      require         => [Pacemaker::Resource::Service[$::ceilometer::params::collector_service_name],
                          Pacemaker::Resource::Service[$::ceilometer::params::api_service_name]],
    }
    pacemaker::constraint::colocation { 'ceilometer-api-with-ceilometer-collector-colocation':
      source  => "${::ceilometer::params::api_service_name}-clone",
      target  => "${::ceilometer::params::collector_service_name}-clone",
      score   => 'INFINITY',
      require => [Pacemaker::Resource::Service[$::ceilometer::params::api_service_name],
                  Pacemaker::Resource::Service[$::ceilometer::params::collector_service_name]],
    }
  }

}