From c7028bd7f25dafe7a4b8019c47d7ee63e5b5cf21 Mon Sep 17 00:00:00 2001
From: Wilson Wu <iwilsonwu@gmail.com>
Date: Fri, 26 Dec 2025 17:30:31 +0800
Subject: [PATCH] feat: add topology spread constraints for gateway and
 controller (#3171)

Signed-off-by: Wilson Wu <iwilsonwu@gmail.com>
---
 helm/core/templates/_pod.tpl                   | 4 ++++
 helm/core/templates/controller-deployment.yaml | 4 ++++
 helm/core/values.yaml                          | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/helm/core/templates/_pod.tpl b/helm/core/templates/_pod.tpl
index c87e4d3ef..a5e680384 100644
--- a/helm/core/templates/_pod.tpl
+++ b/helm/core/templates/_pod.tpl
@@ -250,6 +250,10 @@ template:
     tolerations:
       {{- toYaml . | nindent 6 }}
     {{- end }}
+    {{- with .Values.gateway.topologySpreadConstraints }}
+    topologySpreadConstraints:
+      {{- toYaml . | nindent 6 }}
+    {{- end }}
     volumes:
     - emptyDir: {}
       name: workload-socket
diff --git a/helm/core/templates/controller-deployment.yaml b/helm/core/templates/controller-deployment.yaml
index d39f13376..ec1f6e0db 100644
--- a/helm/core/templates/controller-deployment.yaml
+++ b/helm/core/templates/controller-deployment.yaml
@@ -289,6 +289,10 @@ spec:
       tolerations:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.controller.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       volumes:
       - name: log
         emptyDir: {}
diff --git a/helm/core/values.yaml b/helm/core/values.yaml
index b1fc6b9f6..363a28dad 100644
--- a/helm/core/values.yaml
+++ b/helm/core/values.yaml
@@ -522,6 +522,8 @@ gateway:
 
   affinity: {}
 
+  topologySpreadConstraints: []
+
   # -- If specified, the gateway will act as a network gateway for the given network.
   networkGateway: ""
 
@@ -629,6 +631,8 @@ controller:
 
   affinity: {}
 
+  topologySpreadConstraints: []
+
   autoscaling:
     enabled: false
     minReplicas: 1