From aed45fcaa0a980e42ddde47fcda413a5e4efe38b Mon Sep 17 00:00:00 2001
From: Michele Baldessari <michele@acksyn.org>
Date: Mon, 26 Jan 2026 11:35:11 +0100
Subject: [PATCH] Add the ability to customize the MultiClusterHub spec

---
 templates/multiclusterhub.yaml  |  3 ++-
 tests/multiclusterhub_test.yaml | 36 +++++++++++++++++++++++++++++++++
 values.yaml                     |  3 +++
 3 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/templates/multiclusterhub.yaml b/templates/multiclusterhub.yaml
index a4e8b89..d8fc529 100644
--- a/templates/multiclusterhub.yaml
+++ b/templates/multiclusterhub.yaml
@@ -10,4 +10,5 @@ metadata:
   annotations:
     argocd.argoproj.io/sync-wave: "-1"
     installer.open-cluster-management.io/mce-subscription-spec: '{"source": "{{ default "redhat-operators" .Values.acm.mce_operator.source }}" {{- $channel }} }'
-spec: {}
+spec:
+{{ .Values.acm.mch_spec | toYaml | indent 2 }}
diff --git a/tests/multiclusterhub_test.yaml b/tests/multiclusterhub_test.yaml
index ac926df..f0c4f9c 100644
--- a/tests/multiclusterhub_test.yaml
+++ b/tests/multiclusterhub_test.yaml
@@ -42,3 +42,39 @@ tests:
       - equal:
           path: metadata.annotations["installer.open-cluster-management.io/mce-subscription-spec"]
           value: '{"source": "foo-source","channel": "foo-channel" }'
+
+  - it: Should have empty spec by default
+    asserts:
+      - equal:
+          path: spec
+          value: {}
+
+  - it: Should set custom spec when mch_spec is provided
+    set:
+      acm:
+        mch_spec:
+          disableHubSelfManagement: true
+          availabilityConfig: High
+    asserts:
+      - equal:
+          path: spec.disableHubSelfManagement
+          value: true
+      - equal:
+          path: spec.availabilityConfig
+          value: High
+
+  - it: Should set nested spec properties when mch_spec has nested values
+    set:
+      acm:
+        mch_spec:
+          overrides:
+            components:
+              - name: cluster-backup
+                enabled: true
+    asserts:
+      - equal:
+          path: spec.overrides.components[0].name
+          value: cluster-backup
+      - equal:
+          path: spec.overrides.components[0].enabled
+          value: true
diff --git a/values.yaml b/values.yaml
index 29520ff..d5c436a 100644
--- a/values.yaml
+++ b/values.yaml
@@ -63,6 +63,9 @@ clusterGroup:
 #          value: region-two
 
 acm:
+  # @default -- MultiClusterHub spec (empty by default)
+  mch_spec: {}
+
   # -- Just used for IIB testing, drives the source and channel for the MCE subscription triggered by ACM
   # @default -- Uses the official redhat sources
   mce_operator: