Try to inform mattermost about playbook.

semaphore.yaml

@@ -5,6 +5,8 @@
   gather_facts: true
 
   tasks:
+    - name: Cleanup semaphore
+      block:
         - include_vars: vars/semaphore/variable.yaml
 
         - name: Search for volume's backup directories
@@ -117,3 +119,20 @@
           with_items: "{{ backup_files.results | map(attribute='files') | list }}"
           loop_control:
             label: "{{ item.path }}"
+
+        - name: Inform Mattermost about success
+          uri:
+            url: https://cs-mm.ddnss.de/hooks/og4ckuqet7fafb8kjuaigzuh7c
+            method: POST
+            body_format: json
+            body:
+              text: Semaphore ran successful
+
+      rescue:
+        - name: Inform Mattermost about error
+          uri:
+            url: https://cs-mm.ddnss.de/hooks/og4ckuqet7fafb8kjuaigzuh7c
+            method: POST
+            body_format: json
+            body:
+              text: Semaphore ran into error