PUPPET Y U NO OVERRIDE?!

gistfile1.pp

class profile::sensu::client {

  class {'sensu':
    use_embedded_ruby        => true,
    safe_mode                => false,
    client                   => true,
    server                   => false,
    api                      => false,
    dashboard                => false,
    log_level                => hiera('sensu::client::log_level', 'info'),
    install_repo             => hiera('sensu::client::install_repo', false),
    api_host                 => hiera('sensu::client::api_host'),
    api_port                 => hiera('sensu::client::api_port', 4567),
    redis_host               => hiera('sensu::client::redis_host'),
    redis_port               => hiera('sensu::client::redis_port', 6379),
    rabbitmq_user            => hiera('sensu::client::rabbitmq_user'),
    rabbitmq_password        => hiera('sensu::client::rabbitmq_password'),
    rabbitmq_host            => hiera('sensu::client::rabbitmq_host'),
    rabbitmq_port            => hiera('sensu::client::rabbitmq_port', 5671),
    rabbitmq_vhost           => hiera('sensu::client::rabbitmq_vhost', '/sensu'),
    rabbitmq_ssl_private_key => hiera('sensu::client::rabbitmq_ssl_key', undef),
    rabbitmq_ssl_cert_chain  => hiera('sensu::client::rabbitmq_ssl_cert', undef),
    # Doesn't matter if this is undef, empty or omitted, subclass override won't work.
    subscriptions            => undef,
  }

class profile::sensu::openstack inherits profile::sensu::client {

  Class['sensu'] {
    subscriptions => [
      'ceilometer',
      'glance',
      'heat',
      'keystone',
      'neutron',
      'rabbitmq'
    ],
  }
}

# This yields empty array for the target subscriptions parameter in /etc/sensu/conf.d/client.json:
{
  "client": {
    "address": "123.456.789.1",
    "subscriptions": [

    ],
    "name": "centos.devstack.localdomain",
    "safe_mode": false
  }
}


# But this works and generates the desired array:
class profile::openstack::sensu::client {

  class {'sensu':
    use_embedded_ruby        => true,
    safe_mode                => false,
    client                   => true,
    server                   => false,
    api                      => false,
    dashboard                => false,
    log_level                => hiera('sensu::client::log_level', 'info'),
    install_repo             => hiera('sensu::client::install_repo', false),
    api_host                 => hiera('sensu::client::api_host'),
    api_port                 => hiera('sensu::client::api_port', 4567),
    redis_host               => hiera('sensu::client::redis_host'),
    redis_port               => hiera('sensu::client::redis_port', 6379),
    rabbitmq_user            => hiera('sensu::client::rabbitmq_user'),
    rabbitmq_password        => hiera('sensu::client::rabbitmq_password'),
    rabbitmq_host            => hiera('sensu::client::rabbitmq_host'),
    rabbitmq_port            => hiera('sensu::client::rabbitmq_port', 5671),
    rabbitmq_vhost           => hiera('sensu::client::rabbitmq_vhost', '/sensu'),
    rabbitmq_ssl_private_key => hiera('sensu::client::rabbitmq_ssl_key', undef),
    rabbitmq_ssl_cert_chain  => hiera('sensu::client::rabbitmq_ssl_cert', undef),
    subscriptions            => [
      'ceilometer',
      'glance',
      'heat',
      'keystone',
      'neutron',
      'rabbitmq'
    ],
  }


# cat /etc/sensu/conf.d/client.json
{
  "client": {
    "subscriptions": [
      "ceilometer",
      "glance",
      "heat",
      "keystone",
      "neutron",
      "rabbitmq"
    ],
    "safe_mode": false,
    "address": "123.456.789.1",
    "name": "centos.devstack.localdomain"
  }
}