heat_template_version: pike

description: >
  OpenStack containerized Memcached services

parameters:
  DockerMemcachedImage:
    description: image
    type: string
  DockerMemcachedConfigImage:
    description: The container image to use for the memcached config_volume
    type: string
  EndpointMap:
    default: {}
    description: Mapping of service endpoint -> protocol. Typically set
                 via parameter_defaults in the resource registry.
    type: json
  ServiceData:
    default: {}
    description: Dictionary packing service data
    type: json
  ServiceNetMap:
    default: {}
    description: Mapping of service_name -> network name. Typically set
                 via parameter_defaults in the resource registry.  This
                 mapping overrides those in ServiceNetMapDefaults.
    type: json
  DefaultPasswords:
    default: {}
    type: json
  RoleName:
    default: ''
    description: Role name on which the service is applied
    type: string
  RoleParameters:
    default: {}
    description: Parameters specific to the role
    type: json

resources:

  ContainersCommon:
    type: ./containers-common.yaml

  MemcachedBase:
    type: ../../puppet/services/memcached.yaml
    properties:
      EndpointMap: {get_param: EndpointMap}
      ServiceData: {get_param: ServiceData}
      ServiceNetMap: {get_param: ServiceNetMap}
      DefaultPasswords: {get_param: DefaultPasswords}
      RoleName: {get_param: RoleName}
      RoleParameters: {get_param: RoleParameters}

outputs:
  role_data:
    description: Role data for the Memcached API role.
    value:
      service_name: {get_attr: [MemcachedBase, role_data, service_name]}
      config_settings: {get_attr: [MemcachedBase, role_data, config_settings]}
      logging_source: {get_attr: [MemcachedBase, role_data, logging_source]}
      logging_groups: {get_attr: [MemcachedBase, role_data, logging_groups]}
      step_config: &step_config
        get_attr: [MemcachedBase, role_data, step_config]
      service_config_settings: {get_attr: [MemcachedBase, role_data, service_config_settings]}
      # BEGIN DOCKER SETTINGS
      puppet_config:
        config_volume: 'memcached'
        puppet_tags: 'file'
        step_config: *step_config
        config_image: {get_param: DockerMemcachedConfigImage}
      kolla_config: {}
      docker_config:
        step_1:
          memcached_init_logs:
            start_order: 0
            detach: false
            image: &memcached_image {get_param: DockerMemcachedImage}
            privileged: false
            user: root
            volumes:
               - /var/lib/config-data/memcached/etc/sysconfig/memcached:/etc/sysconfig/memcached:ro
               - /var/log/containers/memcached:/var/log/
            command: ['/bin/bash', '-c', 'source /etc/sysconfig/memcached; touch /var/log/memcached.log && chown ${USER} /var/log/memcached.log']
          memcached:
            start_order: 1
            image: *memcached_image
            net: host
            privileged: false
            restart: always
            volumes:
              list_concat:
                - {get_attr: [ContainersCommon, volumes]}
                -
                  - /var/lib/config-data/memcached/etc/sysconfig/memcached:/etc/sysconfig/memcached:ro
                  - /var/log/containers/memcached:/var/log/
            # NOTE: We're adding the log redirection here, even though should
            # already be part of the options. This is because the redirection
            # via the options is not working and ends up being passed as a
            # parameter to the memcached command (which it silently ignores).
            # Thus the need for the explicit redirection here. The redirection
            # will be removed from the $OPTIONS, which is done via the puppet
            # module, but we'll only be able to do this once the following pull
            # request merges: https://github.com/saz/puppet-memcached/pull/88
            command: ['/bin/bash', '-c', 'source /etc/sysconfig/memcached; /usr/bin/memcached -p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} $OPTIONS >> /var/log/memcached.log 2>&1']
      host_prep_tasks:
        - name: create persistent logs directory
          file:
            path: /var/log/containers/memcached
            state: directory
        - name: memcached logs readme
          copy:
            dest: /var/log/memcached-readme.txt
            content: |
              Log files from memcached containers can be found under
              /var/log/containers/memcached.
          ignore_errors: true
      upgrade_tasks:
        - name: Check if memcached is deployed
          command: systemctl is-enabled --quiet memcached
          tags: common
          ignore_errors: True
          register: memcached_enabled
        - name: "PreUpgrade step0,validation: Check service memcached is running"
          command: systemctl is-active --quiet memcached
          when: memcached_enabled.rc == 0
          tags: step0,validation
        - name: Stop and disable memcached service
          tags: step2
          when: memcached_enabled.rc == 0
          service: name=memcached state=stopped enabled=no
