Better backup task schedule (ansible-ThoTeam#269)

- Allow any schedule type for backup task
- Add backup task to other tasks list to create in
  same operation.

README.md

@@ -658,7 +658,11 @@ nexus_rut_auth_header: "CUSTOM_HEADER"
 ### Backups
 ```yaml
       nexus_backup_configure: false
+      nexus_backup_schedule_type: cron
       nexus_backup_cron: '0 0 21 * * ?'  # See cron expressions definition in nexus create task gui
+      # nexus_backup_start_date_time: "yyyy-MM-dd'T'HH:mm:ss"
+      # nexus_backup_weekly_days: ['MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT']
+      # nexus_backup_monthly_days: {{ range(1,32) | list + [999] }}
       nexus_backup_dir: '/var/nexus-backup'
       nexus_restore_log: '{{ nexus_backup_dir }}/nexus-restore.log'
       nexus_backup_rotate: false
@@ -667,8 +671,13 @@ nexus_rut_auth_header: "CUSTOM_HEADER"
 ```
 
 Backup will not be configured unless you switch `nexus_backup_configure: true`.
-In this case, a scheduled script task will be configured in nexus to run
-at interval specified by `nexus_backup_cron` (defaults to 21:00 every day).
+In this case, a script task will be configured in nexus.
+
+The script task schedule will be set as `cron` by default and runs every day at 21:00. You can define whatever
+schedule you like by setting accordingly the variables `nexus_backup_schedule_type`, `nexus_backup_cron`,
+`nexus_backup_start_date_time`, `nexus_backup_weekly_days` and `nexus_backup_monthly_days`. To understand
+their usage depending on the type of schedule you choose, please see [Scheduled tasks](#scheduled-tasks)
+
 See [the groovy template for this task](templates/backup.groovy.j2) for details.
 This scheduled task is independent from the other `nexus_scheduled_tasks` you
 declare in your playbook

defaults/main.yml

@@ -32,7 +32,13 @@ nexus_max_direct_memory: "2G"
 nexus_backup_dir: '/var/nexus-backup'
 nexus_restore_log: '{{ nexus_backup_dir }}/nexus-restore.log'
 nexus_backup_configure: false  # Shall we configure backup ?
+## For next schedule vars, see related schedule tasks settings
+## https://github.com/ansible-ThoTeam/nexus3-oss/wiki/Scheduled-tasks-configuration#schedule-types-and-related-settings
+nexus_backup_schedule_type: cron
 nexus_backup_cron: "0 0 21 * * ?"  # See cron expression in nexus create task GUI
+# nexus_backup_start_date_time: "yyyy-MM-dd'T'HH:mm:ss"
+# nexus_backup_weekly_days: ['MON', 'TUE', 'WED', 'THU', 'FRI', 'SAT']
+# nexus_backup_monthly_days: {{ range(1,32) | list + [999] }}
 nexus_backup_rotate: false  # Shall we rotate backups
 nexus_backup_rotate_first: false  # Shall we rotate before making the current backup ?
 nexus_backup_keep_rotations: 4  # Keep 4 backup rotations by default (current + last 3)

tasks/main.yml

@@ -234,19 +234,22 @@
       capability_enabled: "{{ nexus_audit_enabled | bool }}"
       capability_properties: {}
 
-- include_tasks: create_task_each.yml
-  with_items: "{{ nexus_scheduled_tasks }}"
-  when: nexus_run_provisionning | default(true) | bool
-
-- name: Configure nexus backup task
-  include_tasks: call_script.yml
-  vars:
-    script_name: create_task
-    args:
-      name: db and blobstores backup
-      typeId: script
-      cron: "{{ nexus_backup_cron }}"
-      taskProperties:
-        language: groovy
-        source: "{{ lookup('template', './templates/backup.groovy.j2') }}"
+- name: Define backup task if backup is configured
+  set_fact:
+    _nexus_backup_task:
+      - name: db and blobstores backup
+        typeId: script
+        schedule_type: "{{ nexus_backup_schedule_type }}"
+        cron: "{{ nexus_backup_cron }}"
+        start_date_time: "{{ nexus_backup_start_date_time | default('') }}"
+        weekly_days: "{{ nexus_backup_weekly_days | default([]) }}"
+        monthly_days: "{{ nexus_backup_monthly_days | default([]) }}"
+        taskProperties:
+          language: groovy
+          source: "{{ lookup('template', './templates/backup.groovy.j2') }}"
   when: nexus_backup_configure | bool
+
+- name: Create scheduled tasks (with backup task if relevant)
+  include_tasks: create_task_each.yml
+  with_items: "{{ nexus_scheduled_tasks + _nexus_backup_task | default([]) }}"
+  when: nexus_run_provisionning | default(true) | bool