feat(Redis): add redis App (#1309)

* feat(Redis): add redis App

* Fixup questions.yaml for redis and add common injector

* fix lint

charts/library/common/Chart.yaml

@@ -15,4 +15,4 @@ maintainers:
 name: common
 sources: null
 type: library
-version: 8.5.5
+version: 8.5.6

charts/library/common/templates/lib/chart/_setup.tpl

@@ -4,4 +4,7 @@
 
 {{- /* Autogenerate postgresql passwords if needed */ -}}
 {{- include "common.dependencies.postgresql.injector" . }}
+
+{{- /* Autogenerate redis passwords if needed */ -}}
+{{- include "common.dependencies.redis.injector" . }}
 {{- end -}}

charts/library/common/templates/lib/dependencies/_redisInjector.tpl

@@ -0,0 +1,36 @@
+{{/*
+This template generates a random password and ensures it persists across updates/edits to the chart
+*/}}
+{{- define "common.dependencies.redis.injector" -}}
+{{- $pghost := printf "%v-%v" .Release.Name "redis" }}
+
+{{- if .Values.redis.enabled }}
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  labels:
+    {{- include "common.labels" . | nindent 4 }}
+  name: rediscreds
+{{- $dbprevious := lookup "v1" "Secret" .Release.Namespace "rediscreds" }}
+{{- $dbPass := "" }}
+data:
+{{- if $dbprevious }}
+  {{- $dbPass = ( index $dbprevious.data "redis-password" ) | b64dec  }}
+  redis-password: {{ ( index $dbprevious.data "redis-password" ) }}
+{{- else }}
+  {{- $dbPass = randAlphaNum 50 }}
+  redis-password: {{ $dbPass | b64enc | quote }}
+{{- end }}
+  url: {{ ( printf "redis://%v:%v@%v-redis:5432/%v" .Values.redis.redisUsername $dbPass .Release.Name .Values.redis.redisDatabase  ) | b64enc | quote }}
+  plainporthost: {{ ( printf "%v-%v" .Release.Name "redis" ) | b64enc | quote }}
+  plainhost: {{ ( printf "%v-%v" .Release.Name "redis" ) | b64enc | quote }}
+type: Opaque
+{{- $_ := set .Values.redis "redisPassword" ( $dbPass | quote ) }}
+{{- $_ := set .Values.redis.url "plain" ( ( printf "%v-%v" .Release.Name "redis" ) | quote ) }}
+{{- $_ := set .Values.redis.url "plainhost" ( ( printf "%v-%v" .Release.Name "redis" ) | quote ) }}
+{{- $_ := set .Values.redis.url "plainport" ( ( printf "%v-%v:5432" .Release.Name "redis" ) | quote ) }}
+{{- $_ := set .Values.redis.url "plainporthost" ( ( printf "%v-%v:5432" .Release.Name "redis" ) | quote ) }}
+
+{{- end }}
+{{- end -}}

charts/library/common/values.yaml

@@ -946,3 +946,11 @@ postgresql:
   existingSecret: "dbcreds"
   # -- can be used to make an easy accessable note which URLS to use to access the DB.
   url: {}
+
+# -- Redis dependency configuration
+# @default -- See below
+redis:
+  enabled: false
+  existingSecret: "rediscreds"
+  # -- can be used to make an easy accessable note which URLS to use to access the DB.
+  url: {}