matrix-docker-ansible-deploy/roles/custom/matrix-synapse/tasks/ext/s3-storage-provider/validate_config.yml

---
- name: Set base required s3-storage-provider settings
  set_fact:
    base_s3_storage_provider_config:
      - "matrix_synapse_ext_synapse_s3_storage_provider_config_bucket"
      - "matrix_synapse_ext_synapse_s3_storage_provider_config_region_name"
      - "matrix_synapse_ext_synapse_s3_storage_provider_config_endpoint_url"

- name: Set optional required s3-storage-provider settings
  set_fact:
    optional_s3_storage_provider_config:
      - "matrix_synapse_ext_synapse_s3_storage_provider_config_access_key_id"
      - "matrix_synapse_ext_synapse_s3_storage_provider_config_secret_access_key"

- name: Prepare a list of required s3-storage-provider settings
  set_fact:
    required_s3_settings: "{{ base_s3_storage_provider_config + (optional_s3_storage_provider_config if not matrix_synapse_ext_synapse_s3_storage_provider_config_ec2_instance_profile|default(false)|bool else []) }}"

- name: Fail if required s3-storage-provider settings not defined
  ansible.builtin.fail:
    msg: >-
      You need to define a required configuration setting (`{{ item }}`) for using s3-storage-provider.
  when: "vars[item] == ''"
  with_items: "{{ required_s3_settings }}"

- name: Fail if required matrix_synapse_ext_synapse_s3_storage_provider_config_endpoint_url looks invalid
  ansible.builtin.fail:
    msg: >-
      `matrix_synapse_ext_synapse_s3_storage_provider_config_endpoint_url` needs to look like a URL (`http://` or `https://` prefix).
  when: "not matrix_synapse_ext_synapse_s3_storage_provider_config_endpoint_url.startswith('http')"