Take another pass at wiring up steps

plays/lib/database.yml

@@ -1,11 +1,15 @@
 ---
-- name: Setup preparatory facts
+
+- name: Run database setup tasks
+  when: db is defined
+  block:
+    - name: Setup preparatory facts
       set_fact:
-    db_type: "{{ db['type'] }}"
+        db_type: "{{ db.type }}"
         mount_map:
           mariadb: /var/lib/mysql
 
-- name: "Create {{ db_type }} database"
+    - name: "Create {{ db_type }} database"
       no_log: true
       shell: "
         dokku
@@ -17,13 +21,13 @@
       args:
         creates: "/var/lib/dokku/services/{{ db_type }}/{{ app }}"
 
-- name: Link mariadb database to application
+    - name: Link mariadb database to application
       dokku_service_link:
         app: "{{ app }}"
         name: "{{ app }}"
         service: "{{ db_type }}"
 
-- name: "Specify {{ db_type }} volume mounts"
+    - name: "Specify {{ db_type }} volume mounts"
       dokku_storage:
         app: "{{ app }}"
         mounts:

plays/lib/domain.yml

@@ -1,8 +1,23 @@
 ---
-- name: "Configure {{ domain }} domain with Dokku"
+- name: "Configure {{ domain }} dedicated domain"
   dokku_domains:
     app: "{{ app }}"
     domains:
       - "{{ domain }}"
     state: present
   when: domain is defined
+
+- name: Provide information on domain configuration
+  debug:
+    msg:
+      - "Dedicated domain discovered for the deployment of {{ app }}"
+      - "Your application will be available at https://{{ domain }}"
+  when: domain is defined
+
+- name: Provide information on sub-domain configuration
+  debug:
+    msg:
+      - "No dedicated domain configured for the deployment of {{ app }}"
+      - "Dokku will provide a sub-domain configuration"
+      - "Your application will be available at https://{{ app }}.{{ dokku_hostname }}"
+  when: domain is not defined

plays/lib/prepare.yml

@@ -0,0 +1,9 @@
+---
+# Note(decentral1se): to avoid exploding when we import the config.yml from the
+# end-user, we spoof out variables that are referenced there but not populated
+# already (due to the order of the tasks we define for our deployment steps)
+- name: Export variable placeholders
+  set_fact:
+    dokku_db_addr: ""
+    dokku_db_user: ""
+    dokku_hostname: "{{ lookup('file', '/home/dokku/HOSTNAME') }}"

plays/lib/vars.yml

@@ -8,5 +8,5 @@
       - yaml
   with_items:
     - "{{ plugin_config_root }}"
-    # - "{{ app_config_root }}"
-    # - "{{ app_config_root }}/vault"
+    - "{{ app_config_root }}/vault"
+    - "{{ app_config_root }}"

plays/post_deploy.yml

@@ -2,15 +2,22 @@
 - hosts: all
   gather_facts: false
   tasks:
-    - name: Include vars tasks
-      include: ./lib/vars.yml
+    # Note(decentral1se): internal debugging. Please `debug: true` in the
+    # /var/lib/dokku/data/deploy.d/vars.yml file to activate a debug vars dump
     - name: Include debug tasks
       include: ./lib/debug.yml
-    # - name: Include http tasks
-    #   include: ./lib/http.yml
-    # - name: Include certs tasks
-    #   include: ./lib/certs.yml
-    # - name: Include proxy tasks
-    #   include: ./lib/proxy.yml
-    # - name: Include https tasks
-    #   include: ./lib/https.yml
+
+    - name: Include vars tasks
+      include: ./lib/vars.yml
+
+    - name: Include http tasks
+      include: ./lib/http.yml
+
+    - name: Include certs tasks
+      include: ./lib/certs.yml
+
+    - name: Include proxy tasks
+      include: ./lib/proxy.yml
+
+    - name: Include https tasks
+      include: ./lib/https.yml

plays/pre_deploy.yml

@@ -2,11 +2,22 @@
 - hosts: all
   gather_facts: false
   tasks:
-    - name: Include vars tasks
-      include: ./lib/vars.yml
+    # Note(decentral1se): internal debugging. Please `debug: true` in the
+    # /var/lib/dokku/data/deploy.d/vars.yml file to activate a debug vars dump
     - name: Include debug tasks
       include: ./lib/debug.yml
-    # - name: Include domain tasks
-    #   include: ./lib/domain.yml
-    # - name: Include env tasks
-    #   include: ./lib/env.yml
+
+    - name: Include prepare tasks
+      include: ./lib/prepare.yml
+
+    - name: Include vars tasks
+      include: ./lib/vars.yml
+
+    - name: Include domain tasks
+      include: ./lib/domain.yml
+
+    - name: Include database tasks
+      include: ./lib/db.yml
+
+    - name: Include env tasks
+      include: ./lib/env.yml