Merge pull request #252 from world-direct/feature/cache_buster

Add theme cache invalidation handler

Author: guidograzioli

roles/keycloak_quarkus/handlers/main.yml

@@ -1,4 +1,7 @@
 ---
+- name: "Invalidate {{ keycloak.service_name }} theme cache"
+  ansible.builtin.include_tasks: invalidate_theme_cache.yml
+  listen: "invalidate keycloak theme cache"
 # handler should be invoked anytime a [build configuration](https://www.keycloak.org/server/all-config?f=build) changes
 - name: "Rebuild {{ keycloak.service_name }} config"
   ansible.builtin.include_tasks: rebuild_config.yml

roles/keycloak_quarkus/tasks/install.yml

@@ -218,7 +218,7 @@
   become: true
   loop: "{{ keycloak_quarkus_providers }}"
   when: item.url is defined and item.url | length > 0
-  notify: "{{ ['rebuild keycloak config', 'restart keycloak'] if not item.restart is defined or item.restart else [] }}"
+  notify: "{{ ['invalidate keycloak theme cache', 'rebuild keycloak config', 'restart keycloak'] if not item.restart is defined or item.restart else [] }}"
 
 # this requires the `lxml` package to be installed; we redirect this step to localhost such that we do need to install it on the remote hosts
 - name: "Download custom providers to localhost using maven"
@@ -235,7 +235,7 @@
   loop: "{{ keycloak_quarkus_providers }}"
   when: item.maven is defined
   no_log: "{{ item.maven.password is defined and item.maven.password | length > 0 | default(false) }}"
-  notify: "{{ ['rebuild keycloak config', 'restart keycloak'] if not item.restart is defined or item.restart else [] }}"
+  notify: "{{ ['invalidate keycloak theme cache', 'rebuild keycloak config', 'restart keycloak'] if not item.restart is defined or item.restart else [] }}"
 
 - name: "Copy maven providers"
   ansible.builtin.copy:
@@ -259,7 +259,7 @@
   become: true
   loop: "{{ keycloak_quarkus_providers }}"
   when: item.local_path is defined
-  notify: "{{ ['rebuild keycloak config', 'restart keycloak'] if not item.restart is defined or item.restart else [] }}"
+  notify: "{{ ['invalidate keycloak theme cache', 'rebuild keycloak config', 'restart keycloak'] if not item.restart is defined or item.restart else [] }}"
 
 - name: Ensure required folder structure for policies exists
   ansible.builtin.file:

roles/keycloak_quarkus/tasks/invalidate_theme_cache.yml

@@ -0,0 +1,11 @@
+---
+# From https://docs.redhat.com/en/documentation/red_hat_build_of_keycloak/24.0/html/server_developer_guide/themes#creating_a_theme:
+# If you want to manually delete the content of the themes cache,
+# you can do so by deleting the data/tmp/kc-gzip-cache directory of the server distribution
+# It can be useful for instance if you redeployed custom providers or custom themes without
+# disabling themes caching in the previous server executions.
+- name: "Delete {{ keycloak.service_name }} theme cache directory"
+  ansible.builtin.file:
+    path: "{{ keycloak.home }}/data/tmp/kc-gzip-cache"
+    state: absent
+  become: true