heat_template_version: 2016-10-14
description: 'Upgrade steps for all roles'

parameters:
  servers:
    type: json

  role_data:
    type: json
    description: Mapping of Role name e.g Controller to the per-role data

  UpdateIdentifier:
    type: string
    description: >
      Setting to a previously unused value during stack-update will trigger
      the Upgrade resources to re-run on all roles.

  UpgradeInitCommand:
    type: string
    description: |
      Command or script snippet to run on all overcloud nodes to
      initialize the upgrade process. E.g. a repository switch.
    default: ''

resources:

  # For the UpgradeInit also rename /etc/resolv.conf.save for +bug/1567004
  UpgradeInitConfig:
    type: OS::Heat::SoftwareConfig
    properties:
      group: script
      config:
        list_join:
        - ''
        - - "#!/bin/bash\n\n"
          - "if [[ -f /etc/resolv.conf.save ]] ; then rm /etc/resolv.conf.save; fi\n\n"
          - get_param: UpgradeInitCommand

{% for role in roles %}
  {{role.name}}Upgrade_Init:
    type: OS::Heat::StructuredDeploymentGroup
    properties:
      name: {{role.name}}Upgrade_Init
      servers: {get_param: [servers, {{role.name}}]}
      config: {get_resource: UpgradeInitConfig}
{% endfor %}

# Upgrade Steps for all roles
# FIXME(shardy): would be nice to make the number of steps configurable
{% for step in range(1, 8) %}
  {% for role in roles %}
  # Step {{step}} resources
  {{role.name}}UpgradeConfig_Step{{step}}:
    type: OS::TripleO::UpgradeConfig
  # The UpgradeConfig resources could actually be created without
  # serialization, but the event output is easier to follow if we
  # do, and there should be minimal performance hit (creating the
  # config is cheap compared to the time to apply the deployment).
    depends_on:
  {% if step == 1 %}
      - {{role.name}}Upgrade_Init
  {% else %}
      {% for dep in roles %}
      - {{dep.name}}Upgrade_Step{{step -1}}
      {% endfor %}
  {% endif %}
    properties:
      UpgradeStepConfig: {get_param: [role_data, {{role.name}}, upgrade_tasks]}
      step: {{step}}

  {{role.name}}Upgrade_Step{{step}}:
    type: OS::Heat::StructuredDeploymentGroup
  {% if step > 1 %}
    depends_on:
      {% for dep in roles %}
      - {{dep.name}}Upgrade_Step{{step -1}}
      {% endfor %}
  {% endif %}
    properties:
      name: {{role.name}}Upgrade_Step{{step}}
      servers: {get_param: [servers, {{role.name}}]}
      config: {get_resource: {{role.name}}UpgradeConfig_Step{{step}}}
      input_values:
        role: {{role.name}}
        update_identifier: {get_param: UpdateIdentifier}
  {% endfor %}
{% endfor %}

outputs:
  # Output the config for each role, just use Step1 as the config should be
  # the same for all steps (only the tag provided differs)
  upgrade_configs:
    description: The per-role upgrade configuration used
    value:
{% for role in roles %}
      {{role.name.lower()}}: {get_attr: [{{role.name}}UpgradeConfig_Step1, upgrade_config]}
{% endfor %}