From 22cd62e90c973caf84b053db73eb405c34c3683c Mon Sep 17 00:00:00 2001
From: Lisa Parratt <lisa.parratt@bjss.com>
Date: Mon, 25 Jul 2022 15:25:05 +0100
Subject: [PATCH] Allow config files (e.g. whitelist) to be overridden from
 values.

---
 charts/krane/templates/_helpers.tpl    | 11 ++++++++
 charts/krane/templates/config.yaml     | 35 ++++++++++++++++++++++++++
 charts/krane/templates/deployment.yaml | 22 ++++++++++++++++
 3 files changed, 68 insertions(+)
 create mode 100644 charts/krane/templates/config.yaml

diff --git a/charts/krane/templates/_helpers.tpl b/charts/krane/templates/_helpers.tpl
index c1a1e86..251dac8 100644
--- a/charts/krane/templates/_helpers.tpl
+++ b/charts/krane/templates/_helpers.tpl
@@ -73,3 +73,14 @@ Create the name of the service account to use
 {{- default "default" .Values.serviceAccount.name }}
 {{- end }}
 {{- end }}
+
+{{/*
+Config labels
+*/}}
+{{- define "krane.configLabels" -}}
+app.kubernetes.io/name: {{ include "krane.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: {{ include "krane.name" . }}
+app.kubernetes.io/part-of: {{ include "krane.name" . }}
+network/krane: "true"
+{{- end }}
diff --git a/charts/krane/templates/config.yaml b/charts/krane/templates/config.yaml
new file mode 100644
index 0000000..be18cb8
--- /dev/null
+++ b/charts/krane/templates/config.yaml
@@ -0,0 +1,35 @@
+{{- if .Values.config }}
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "krane.fullname" . }}
+  labels:
+    {{- include "krane.labels" . | nindent 4 }}
+    {{- include "krane.configLabels" . | nindent 4 }}
+data:
+  {{- if .Values.config.config }}
+  {{- with .Values.config.config }}
+  config.yaml: |
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- end }}
+  {{- if .Values.config.customrules }}
+  {{- with .Values.config.customrules }}
+  custom-rules.yaml: |
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- end }}
+  {{- if .Values.config.rules }}
+  {{- with .Values.config.rules }}
+  rules.yaml: |
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- end }}
+  {{- if .Values.config.whitelist }}
+  {{- with .Values.config.whitelist }}
+  whitelist.yaml: |
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- end }}
+{{- end }}
diff --git a/charts/krane/templates/deployment.yaml b/charts/krane/templates/deployment.yaml
index fb21050..f732672 100644
--- a/charts/krane/templates/deployment.yaml
+++ b/charts/krane/templates/deployment.yaml
@@ -137,6 +137,21 @@ spec:
             timeoutSeconds: 5
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
+          {{- if .Values.config }}
+          volumeMounts:
+          - name: config-volume
+            mountPath: /app/config/config.yaml
+            subPath: config.yaml
+          - name: config-volume
+            mountPath: /app/config/custom-rules.yaml
+            subPath: custom-rules.yaml
+          - name: config-volume
+            mountPath: /app/config/rules.yaml
+            subPath: rules.yaml
+          - name: config-volume
+            mountPath: /app/config/whitelist.yaml
+            subPath: whitelist.yaml
+          {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
@@ -150,3 +165,10 @@ spec:
         {{- toYaml . | nindent 8 }}
       {{- end }}
       restartPolicy: Always
+      {{- if .Values.config }}
+      volumes:
+      - name: config-volume
+        configMap:
+          name: {{ include "krane.fullname" . }}
+      {{- end }}
+