create tasks for cron extension

roles/common/tasks/postgres_cron.yml

@@ -1,12 +1,58 @@
-- name: "Create pg_cron extension {{ timescaledb_database_name }}"
+- name: "Install postgresql-{{ postgresql_version }}-cron"
   tags:
     - install
     - timescaledb_install
-    - postgres_extension
-  postgresql_ext:
-    name: pg_cron
-    db: "{{ timescaledb_database_name }}"
-    state: present
+  apt:
+    pkg:
+      - "postgresql-{{ postgresql_version }}-cron"
+    state: latest
+    update_cache: yes
+
+- name: "Add pg_cron to shared_preload_libraries"
+  tags:
+    - install
+    - timescaledb_install    
+  lineinfile:
+    path: /etc/postgresql/{{ postgresql_version }}/main/postgresql.conf
+    regexp: "^shared_preload_libraries = 'timescaledb'"
+    line: "shared_preload_libraries = 'timescaledb,pg_cron'"
+
+- name: "Define cron database name"
+  tags:
+    - install
+    - timescaledb_install    
+  lineinfile:
+    dest: /etc/postgresql/{{ postgresql_version }}/main/postgresql.conf
+    line: "cron.database_name = '{{ timescaledb_database_name }}'"
+
+- name: "Define cron database name"
+  tags:
+    - install
+    - timescaledb_install    
+  lineinfile:
+    dest: /etc/postgresql/{{ postgresql_version }}/main/postgresql.conf
+    line: "cron.timezone = 'Europe/Berlin'"
+
+- name: "Restart postgresql service"
+  tags:
+    - install
+    - timescaledb_install
+  systemd:
+    name: postgresql
+    state: restarted
+
+- postgresql_query:
+    db: {{ timescaledb_database_name }}
     login_user: postgres
-    login_password: "{{ postgresql_admin_password  }}"
-    login_host: "{{ lxc_ip }}"
+    login_password: {{ postgresql_admin_password }}
+    query:
+      - CREATE EXTENSION pg_cron;
+      - GRANT USAGE ON SCHEMA cron TO {{ timescaledb_database_user }};
+
+- name: "Restart postgresql service"
+  tags:
+    - install
+    - timescaledb_install
+  systemd:
+    name: postgresql
+    state: restarted