okd/roles/openshift_logging/tasks/set_defaults_from_current.yml

---

## We are pulling default values from configmaps if they exist already
## Using conditional_set_fact allows us to set the value of a variable based on
##  the value of another one, if it is already defined. Else we don't set the
##  left hand side (it stays undefined as well).

## conditional_set_fact allows us to specify a fact source, so first we try to
##  set variables in the logging-elasticsearch & logging-elasticsearch-ops configmaps
##  afterwards we set the value of the variable based on the value in the inventory
##  but fall back to using the value from a configmap as a default. If neither is set
##  then the variable remains undefined and the role default will be used.

- conditional_set_fact:
    facts: "{{ openshift_logging_facts['elasticsearch']['configmaps']['logging-elasticsearch']['elasticsearch.yml'] | flatten_dict }}"
    vars:
      __openshift_logging_es_number_of_shards: index.number_of_shards
      __openshift_logging_es_number_of_replicas: index.number_of_replicas
  when: openshift_logging_facts['elasticsearch']['configmaps']['logging-elasticsearch'] is defined

- conditional_set_fact:
    facts: "{{ openshift_logging_facts['elasticsearch_ops']['configmaps']['logging-elasticsearch-ops']['elasticsearch.yml'] | flatten_dict }}"
    vars:
      __openshift_logging_es_ops_number_of_shards: index.number_of_shards
      __openshift_logging_es_ops_number_of_replicas: index.number_of_replicas
  when: openshift_logging_facts['elasticsearch_ops']['configmaps']['logging-elasticsearch-ops'] is defined

- conditional_set_fact:
    facts: "{{ hostvars[inventory_hostname] }}"
    vars:
      openshift_logging_es_number_of_shards: openshift_logging_es_number_of_shards | __openshift_logging_es_number_of_shards
      openshift_logging_es_number_of_replicas: openshift_logging_es_number_of_replicas | __openshift_logging_es_number_of_replicas
      openshift_logging_es_ops_number_of_shards: openshift_logging_es_ops_number_of_shards | __openshift_logging_es_ops_number_of_shards
      openshift_logging_es_ops_number_of_replicas: openshift_logging_es_ops_number_of_replicas | __openshift_logging_es_ops_number_of_replicas