From 18040ae61839a44e2f131d7915564b9073581d6f Mon Sep 17 00:00:00 2001
From: Julien Francoz <julien-github@francoz.net>
Date: Sun, 4 Feb 2024 19:16:15 +0000
Subject: [PATCH] use tpl in backendService

Allow to specify backendService via the tpl function, when used as an
HELM dependency
---
 chart/templates/deployment.yaml  | 2 +-
 chart/templates/statefulset.yaml | 2 +-
 chart/values.yaml                | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/chart/templates/deployment.yaml b/chart/templates/deployment.yaml
index 6eebd47..8518cce 100644
--- a/chart/templates/deployment.yaml
+++ b/chart/templates/deployment.yaml
@@ -78,7 +78,7 @@ spec:
           {{- else }}
           - -backend-watch=false
           {{- end }}
-          - -backend-service={{ .Values.cache.backendService }}
+          - -backend-service={{ tpl .Values.cache.backendService . }}
           - -backend-namespace={{ .Values.cache.backendServiceNamespace | default "$(NAMESPACE)" }}
           - -varnish-secret-file=/etc/varnish/k8s-secret/secret
           - -varnish-vcl-template=/etc/varnish/tmpl/default.vcl.tmpl
diff --git a/chart/templates/statefulset.yaml b/chart/templates/statefulset.yaml
index a851ff5..d62c5f7 100644
--- a/chart/templates/statefulset.yaml
+++ b/chart/templates/statefulset.yaml
@@ -72,7 +72,7 @@ spec:
           - -backend-watch=false
           {{- end }}
           - -backend-namespace={{ .Values.cache.backendServiceNamespace | default "$(NAMESPACE)" }}
-          - -backend-service={{ .Values.cache.backendService }}
+          - -backend-service={{ tpl .Values.cache.backendService . }}
           - -varnish-secret-file=/etc/varnish/k8s-secret/secret
           - -varnish-vcl-template=/etc/varnish/tmpl/default.vcl.tmpl
           - -varnish-storage={{ .Values.cache.varnishStorage }},{{ .Values.cache.storageSize }}
diff --git a/chart/values.yaml b/chart/values.yaml
index 7f3feaf..095f56b 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -26,7 +26,7 @@ configmap:
 cache:
   # name of frontend service
   # frontendService: kube-httpcache-headless
-  # name of backend service
+  # name of backend service (this value is evaluated as a template)
   backendService: backend-service
   # name of backend service namespace
   # backendServiceNamespace: backend-service-namespace