feat(contrib/helm): evaluate the provided passwordSecretName value as a template (#4046)

* feat(contrib/helm): evaluate the provided passwordSecretName value as a template

Useful to reuse some defined variables or functions directly to compute the value
(external chart for instance, that depends on this one)

example:
'{{ include "something.defined.elsewhere" $ }}-secrets'

Signed-off-by: Raphael Glon <oOraph@users.noreply.github.com>

* update golden tests

---------

Signed-off-by: Raphael Glon <oOraph@users.noreply.github.com>
Co-authored-by: Raphael Glon <oOraph@users.noreply.github.com>
Co-authored-by: Tarun Pothulapati <tarun@dragonflydb.io>

contrib/charts/dragonfly/ci/passwordsecret-values.tpl.golden.yaml

@@ -0,0 +1,108 @@
+---
+# Source: dragonfly/templates/serviceaccount.yaml
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: test-dragonfly
+  namespace: default
+  labels:
+    app.kubernetes.io/name: dragonfly
+    app.kubernetes.io/instance: test
+    app.kubernetes.io/version: "v1.25.3"
+    app.kubernetes.io/managed-by: Helm
+---
+# Source: dragonfly/templates/extra-manifests.yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: dragonfly-password
+stringData:
+  password: foobar
+---
+# Source: dragonfly/templates/service.yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: test-dragonfly
+  namespace: default
+  labels:
+    app.kubernetes.io/name: dragonfly
+    app.kubernetes.io/instance: test
+    app.kubernetes.io/version: "v1.25.3"
+    app.kubernetes.io/managed-by: Helm
+spec:
+  type: ClusterIP
+  ports:
+    - port: 6379
+      targetPort: dragonfly
+      protocol: TCP
+      name: dragonfly
+  selector:
+    app.kubernetes.io/name: dragonfly
+    app.kubernetes.io/instance: test
+---
+# Source: dragonfly/templates/deployment.yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-dragonfly
+  namespace: default
+  labels:
+    app.kubernetes.io/name: dragonfly
+    app.kubernetes.io/instance: test
+    app.kubernetes.io/version: "v1.25.3"
+    app.kubernetes.io/managed-by: Helm
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: dragonfly
+      app.kubernetes.io/instance: test
+  template:
+    metadata:
+      annotations:
+      labels:
+        app.kubernetes.io/name: dragonfly
+        app.kubernetes.io/instance: test
+    spec:
+      serviceAccountName: test-dragonfly
+      containers:
+        - name: dragonfly
+          image: "docker.dragonflydb.io/dragonflydb/dragonfly:v1.25.3"
+          imagePullPolicy: IfNotPresent
+          ports:
+            - name: dragonfly
+              containerPort: 6379
+              protocol: TCP
+          livenessProbe:
+            exec:
+              command:
+              - /bin/sh
+              - /usr/local/bin/healthcheck.sh
+            failureThreshold: 3
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            successThreshold: 1
+            timeoutSeconds: 5
+          readinessProbe:
+            exec:
+              command:
+              - /bin/sh
+              - /usr/local/bin/healthcheck.sh
+            failureThreshold: 3
+            initialDelaySeconds: 10
+            periodSeconds: 10
+            successThreshold: 1
+            timeoutSeconds: 5
+          args:
+            - "--alsologtostderr"
+          resources:
+            limits: {}
+            requests: {}
+          
+          env:
+            - name: DFLY_requirepass
+              valueFrom:
+                secretKeyRef:
+                  name: dragonfly-password
+                  key: password

contrib/charts/dragonfly/ci/passwordsecret-values.tpl.yaml

@@ -0,0 +1,13 @@
+extraObjects:
+- apiVersion: v1
+  kind: Secret
+  metadata:
+    name: dragonfly-password
+  stringData:
+    password: foobar
+
+passwordFromSecret:
+  enable: true
+  existingSecret:
+    name: '{{ include "dragonfly.name" $ }}-password'
+    key: password

contrib/charts/dragonfly/templates/_pod.tpl

@@ -111,7 +111,7 @@ containers:
     {{- end }}
         valueFrom:
           secretKeyRef:
-            name: {{ .Values.passwordFromSecret.existingSecret.name }}
+            name: {{ tpl .Values.passwordFromSecret.existingSecret.name $ }}
             key: {{ .Values.passwordFromSecret.existingSecret.key }}
     {{- end }}
 

go.work.sum

@@ -1,2 +1,4 @@
-github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
-github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=