From 0cd419d54b66558a59072bd147a0ffca9e61622d Mon Sep 17 00:00:00 2001
From: Neville Bonavia <nbonavia@gmail.com>
Date: Thu, 14 Jul 2022 17:04:08 +0200
Subject: [PATCH] feat: adding ksqldb helm chart support for initcontainer,
 volumes and mounts

---
 .../cp-ksql-server/templates/deployment.yaml  | 13 ++++++++++
 values.yaml                                   | 24 +++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/charts/cp-ksql-server/templates/deployment.yaml b/charts/cp-ksql-server/templates/deployment.yaml
index b152880c..4f560b02 100644
--- a/charts/cp-ksql-server/templates/deployment.yaml
+++ b/charts/cp-ksql-server/templates/deployment.yaml
@@ -33,6 +33,13 @@ spec:
       {{- end }}
       {{- end }}
     spec:
+      {{- if hasKey .Values "initContainers" }}
+      initContainers:
+{{- range $key, $value := .Values.initContainers }}
+      - name: {{ $key }}
+{{ toYaml $value | trim | indent 8 }}
+{{- end }}
+      {{- end }}
       containers:
         {{- if .Values.prometheus.jmx.enabled }}
         - name: prometheus-jmx-exporter
@@ -74,6 +81,9 @@ spec:
           - name: ksql-queries
             mountPath: /etc/ksql/queries
           {{- end }}
+{{- if hasKey .Values "extraVolumeMounts" }}
+{{ toYaml .Values.extraVolumeMounts | trim | indent 10 }}
+{{ end }}
           env:
           - name: KSQL_BOOTSTRAP_SERVERS
             value: {{ template "cp-ksql-server.kafka.bootstrapServers" . }}
@@ -103,6 +113,9 @@ spec:
 {{ toYaml .Values.imagePullSecrets | indent 8 }}
       {{- end }}
       volumes:
+{{- if hasKey .Values "extraVolumes" }}
+{{ toYaml .Values.extraVolumes | trim | indent 6 }}
+{{- end }}
       {{- if .Values.prometheus.jmx.enabled }}
       - name: jmx-config
         configMap:
diff --git a/values.yaml b/values.yaml
index c35748c1..9bd37ef1 100644
--- a/values.yaml
+++ b/values.yaml
@@ -148,6 +148,30 @@ cp-ksql-server:
   ksql:
     headless: false
 
+  ## Optionally add init containers that initialises ksqldb, like adding ksqldb-udfs in a mounted volume
+  # initContainers:
+  #   init:
+  #     image: busybox:latest
+  #     imagePullPolicy: IfNotPresent
+  #     command:
+  #     - sh
+  #     - -c
+  #     - |
+  #       touch /opt/ksqldb-udfs/additional-file
+  #     volumeMounts:
+  #     - mountPath: /opt/ksqldb-udfs
+  #       name: extensions-volume
+
+  ## Optionally mounts volumes to the cp-ksql-server container
+  # extraVolumeMounts:
+  # - mountPath: /opt/ksqldb-udfs
+  #   name: extensions-volume
+
+  ## Optionally adds additional volumes to this pod
+  # extraVolumes:
+  # - name: extensions-volume
+  #   emptyDir: {}
+
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