ansible/roles/controller/tasks/join_akka_cluster.yml

# Licensed to the Apache Software Foundation (ASF) under one or more contributor
# license agreements; and to You under the Apache License, Version 2.0.
---
#
#  Controller 'plugin' that will add the items necessary to the controller
#  environment to cause the controller to join a specified akka cluster
#

- name: add akka port to ports_to_expose
  set_fact:
    ports_to_expose: >-
      {{ ports_to_expose }} +
      [ "{{ (controller.akka.cluster.basePort + (controller_index | int)) }}:"
      + "{{ controller.akka.cluster.bindPort }}" ]

- name: add seed nodes to controller environment
  set_fact:
    controller_env: >-
      {{ controller_env | combine({
        'CONFIG_akka_cluster_seedNodes_' ~ item.0:
          'akka.tcp://controller-actor-system@'~item.1~':'~(controller.akka.cluster.basePort+item.0)
      }) }}
  with_indexed_items: "{{ controller.akka.cluster.seedNodes }}"

- name: Add akka environment to controller environment
  vars:
    akka_env:
      "CONFIG_akka_actor_provider": "{{ controller.akka.provider }}"
      "CONFIG_akka_remote_netty_tcp_hostname":
        "{{ controller.akka.cluster.host[(controller_index | int)] }}"
      "CONFIG_akka_remote_netty_tcp_port":
        "{{ controller.akka.cluster.basePort + (controller_index | int) }}"
      "CONFIG_akka_remote_netty_tcp_bindPort":
        "{{ controller.akka.cluster.bindPort }}"
  set_fact:
    controller_env: "{{ controller_env | combine(akka_env) }}"