feat(redis): add ansible role

roles/redis/defaults/main/container.yml

@@ -0,0 +1,38 @@
+---
+redis_container_image_registry: docker.io
+redis_container_image_namespace: ~
+redis_container_image_name: redis
+redis_container_image_tag: ~
+redis_container_image_flavour: alpine
+redis_container_image_source: pull
+redis_container_image_force_source: >-2
+  {{ redis_container_image_tag | default(false, true) | bool }}
+redis_container_image: >-2
+  {{
+    ([
+      redis_container_image_registry | default([], true),
+      redis_container_image_namespace | default([], true),
+      redis_container_image_name,
+    ] | flatten | join('/'))
+    + ':' +
+    (redis_container_image_tag | default(
+      redis_version + (
+        (redis_container_image_flavour | default(false, true) | bool)
+        | ternary('-' + (redis_container_image_flavour | default('')), '')
+      ),
+      true,
+    ))
+  }}
+
+redis_container_name: "redis{{ redis_instance_suffix }}"
+redis_container_env: ~
+redis_container_user: #TODO
+redis_container_ports: ~
+redis_container_labels: ~
+redis_container_volumes: # TODO
+redis_container_networks: ~
+redis_container_etc_hosts: ~
+redis_container_dns_servers: ~
+redis_container_restart_policy: "unless-stopped"
+redis_container_state: >-2
+  {{ (redis_state == 'present') | default('started', 'absent') }}

roles/redis/defaults/main/main.yml

@@ -0,0 +1,13 @@
+---
+redis_version: "7.2.4"
+redis_instance: ~
+redis_instance_suffix: >-2
+  {{ (redis_instance | default(false, true) | bool)
+    | ternary('-' + (redis_instance | default('')), '') }}
+redis_user: >-2
+  redis{{ redis_instance_suffix }}
+
+redis_config_path: "/etc/redis"
+redis_config_file: >-2
+  {{ redis_config_path }}/redis{{ redis_instance_suffix }}.conf
+redis_data_path: "/var/lib/redis{{ redis_instance_suffix }}"

roles/redis/tasks/main.yml

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+---
+- name: Ensure state is valid
+  ansible.builtin.fail:
+    msg: >-2
+      Unsupported state '{{ redis_state }}'.
+      Supported states are {{ redis_states | join(', ') }}
+  when: redis_state not in redis_states

roles/redis/vars/main.yml

@@ -0,0 +1,4 @@
+---
+redis_states:
+  - present
+  - absent