From dc05972b63f10542a9023134aa13e8dbd3033f54 Mon Sep 17 00:00:00 2001
From: Andre Ferreira Guimaraes Junior <andrefgj@br.ibm.com>
Date: Fri, 9 May 2025 14:59:07 -0300
Subject: [PATCH] [patch] MSO-2039 Adding Optimizer Rollback

---
 .../roles/suite_app_rollback/tasks/main.yml   |  6 ++
 .../tasks/rollback_mas_optimizer.yml          | 72 +++++++++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 ibm/mas_devops/roles/suite_app_rollback/tasks/rollback_mas_optimizer.yml

diff --git a/ibm/mas_devops/roles/suite_app_rollback/tasks/main.yml b/ibm/mas_devops/roles/suite_app_rollback/tasks/main.yml
index a1f103a923..605a0d1ec7 100644
--- a/ibm/mas_devops/roles/suite_app_rollback/tasks/main.yml
+++ b/ibm/mas_devops/roles/suite_app_rollback/tasks/main.yml
@@ -40,6 +40,12 @@
     - rollback_mas_app
   include_tasks: tasks/rollback_mas_iot.yml
 
+- name: "Execute MAS Optimizer Rollback"
+  when:
+    - mas_app_id is defined and mas_app_id == "optimizer"
+    - rollback_mas_app
+  include_tasks: tasks/rollback_mas_optimizer.yml
+
 # 5. Verify the current core version matching with specified version
 # -----------------------------------------------------------------------------
 - name: "Verify App Version"
diff --git a/ibm/mas_devops/roles/suite_app_rollback/tasks/rollback_mas_optimizer.yml b/ibm/mas_devops/roles/suite_app_rollback/tasks/rollback_mas_optimizer.yml
new file mode 100644
index 0000000000..1f531c845f
--- /dev/null
+++ b/ibm/mas_devops/roles/suite_app_rollback/tasks/rollback_mas_optimizer.yml
@@ -0,0 +1,72 @@
+---
+# 1. Check the existing installation
+# -----------------------------------------------------------------------------
+- name: "OptimizerApp : Get CR for OptimizerApp"
+  kubernetes.core.k8s_info:
+    api_version: apps.mas.ibm.com/v1
+    name: "{{ mas_instance_id }}"
+    namespace: "{{ mas_app_namespace }}"
+    kind: OptimizerApp
+  register: current_app_info
+
+# 2. Rollback MAS Optimizer
+# -----------------------------------------------------------------------------
+- name: "Rollback : rollback MAS Optimizer to specified version"
+  kubernetes.core.k8s:
+    api_version: apps.mas.ibm.com/v1
+    name: "{{ mas_instance_id }}"
+    namespace: "{{ mas_app_namespace }}"
+    kind: OptimizerApp
+    definition:
+      spec:
+        version: "{{ mas_app_version }}"
+    apply: true
+  when:
+    - not mas_rollback_dryrun
+    - mas_app_version and mas_app_version != ""
+    - current_app_info is defined and current_app_info.resources[0].status.versions.reconciled != mas_app_version
+    - skip_compatibility_check or mas_app_version in current_app_info.resources[0].status.versions.supported
+
+- name: "Debug when we are already on the desired version"
+  when:
+    - mas_app_version is defined and mas_app_version != ""
+    - current_app_info is defined and current_app_info.resources[0].status.versions.reconciled == mas_app_version
+  debug:
+    msg: "No action required, Optimizer app is already on the {{ mas_app_version }} version"
+
+- name: "Debug when the version is not defined"
+  when:
+    - mas_app_version is not defined or mas_app_version == ""
+  debug:
+    msg: "No action required, no version information is available for rollback"
+
+- name: "Debug when the version is not supported"
+  when:
+    - mas_app_version and mas_app_version != ""
+    - skip_compatibility_check is false and mas_app_version is not in current_app_info.resources[0].status.versions.supported
+  debug:
+    msg: "No action required, version is not supported for rollback"
+
+# 3. Check that the Optimizer CR meets the required state
+# -----------------------------------------------------------------------------
+- name: "Rollback : Get CR for OptimizerApp"
+  kubernetes.core.k8s_info:
+    api_version: apps.mas.ibm.com/v1
+    name: "{{ mas_instance_id }}"
+    namespace: "{{ mas_app_namespace }}"
+    kind: OptimizerApp
+  retries: 20 # about 20 minutes
+  delay: 60 # 1 minute
+  until:
+    - updated_app_info.resources[0].status.versions.reconciled == mas_app_version
+    - updated_app_info.resources | json_query('[*].status.conditions[?type==`Ready`][].reason') | select ('match','Ready') | list | length == 1
+  register: updated_app_info
+  when:
+    - mas_app_version and mas_app_version != ""
+    - not mas_rollback_dryrun
+    - current_app_info is defined and current_app_info.resources[0].status.versions.reconciled != mas_app_version
+    - skip_compatibility_check or mas_app_version in current_app_info.resources[0].status.versions.supported
+
+- name: "Rollback : Debug MAS Optimizer"
+  debug:
+    var: updated_app_info