First Commit

templates/_helpers.tpl

@@ -0,0 +1,154 @@
+{{/* Chart name */}}
+{{- define "redis-cluster.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/* Fully qualified app name */}}
+{{- define "redis-cluster.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/* Chart label */}}
+{{- define "redis-cluster.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/* Common labels */}}
+{{- define "redis-cluster.labels" -}}
+helm.sh/chart: {{ include "redis-cluster.chart" . }}
+{{ include "redis-cluster.selectorLabels" . }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{/* Selector labels */}}
+{{- define "redis-cluster.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "redis-cluster.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}
+
+{{/*
+Headless service DNS name. Deliberately stop at .svc: the cluster DNS suffix is
+not necessarily cluster.local, and Kubernetes expands this portable name using
+the pod's search domains.
+*/}}
+{{- define "redis-cluster.headlessFqdn" -}}
+{{ include "redis-cluster.fullname" . }}-headless.{{ .Release.Namespace }}.svc
+{{- end -}}
+
+{{/* Service account name */}}
+{{- define "redis-cluster.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+{{- default (include "redis-cluster.fullname" .) .Values.serviceAccount.name -}}
+{{- else -}}
+{{- default "default" .Values.serviceAccount.name -}}
+{{- end -}}
+{{- end -}}
+
+{{/* Secret name holding the password */}}
+{{- define "redis-cluster.secretName" -}}
+{{- if .Values.auth.existingSecret -}}
+{{- .Values.auth.existingSecret -}}
+{{- else -}}
+{{- include "redis-cluster.fullname" . -}}
+{{- end -}}
+{{- end -}}
+
+{{/* Secret key holding the password */}}
+{{- define "redis-cluster.secretKey" -}}
+{{- if .Values.auth.existingSecret -}}
+{{- .Values.auth.existingSecretKey -}}
+{{- else -}}
+redis-password
+{{- end -}}
+{{- end -}}
+
+{{/*
+Password: explicit value wins; otherwise reuse the one already in the cluster
+(so upgrades don't rotate it); otherwise generate.
+*/}}
+{{- define "redis-cluster.password" -}}
+{{- if .Values.auth.password -}}
+{{- .Values.auth.password -}}
+{{- else -}}
+{{- $existing := lookup "v1" "Secret" .Release.Namespace (include "redis-cluster.fullname" .) -}}
+{{- if and $existing $existing.data (index $existing.data "redis-password") -}}
+{{- index $existing.data "redis-password" | b64dec -}}
+{{- else -}}
+{{- randAlphaNum 24 -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/* Total Redis nodes: shards * (one primary + replicas per shard). */}}
+{{- define "redis-cluster.nodeCount" -}}
+{{- mul (int .Values.cluster.shards) (add (int .Values.cluster.replicasPerShard) 1) -}}
+{{- end -}}
+
+{{/* Balanced bootstrap Service used by cluster-aware clients. */}}
+{{- define "redis-cluster.bootstrapServiceName" -}}
+{{- if .Values.externalAccess.enabled -}}
+{{- printf "%s-external" (include "redis-cluster.fullname" .) -}}
+{{- else -}}
+{{- include "redis-cluster.fullname" . -}}
+{{- end -}}
+{{- end -}}
+
+{{/* RedisInsight resource name. */}}
+{{- define "redis-cluster.redisInsightName" -}}
+{{- printf "%s-insight" (include "redis-cluster.fullname" .) | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/* RedisInsight labels deliberately do not match the Redis pod selector. */}}
+{{- define "redis-cluster.redisInsightLabels" -}}
+helm.sh/chart: {{ include "redis-cluster.chart" . }}
+app.kubernetes.io/name: redisinsight
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: insight
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{- define "redis-cluster.redisInsightSelectorLabels" -}}
+app.kubernetes.io/name: redisinsight
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/component: insight
+{{- end -}}
+
+{{/* Environment shared by Redis lifecycle scripts. */}}
+{{- define "redis-cluster.commonEnv" -}}
+- name: STS_NAME
+  value: {{ include "redis-cluster.fullname" . | quote }}
+- name: HEADLESS_SERVICE
+  value: {{ include "redis-cluster.headlessFqdn" . | quote }}
+- name: NODE_COUNT
+  value: {{ include "redis-cluster.nodeCount" . | quote }}
+- name: SHARD_COUNT
+  value: {{ .Values.cluster.shards | quote }}
+- name: REPLICAS_PER_SHARD
+  value: {{ .Values.cluster.replicasPerShard | quote }}
+- name: REDIS_PORT
+  value: {{ .Values.redis.port | quote }}
+- name: CLUSTER_BUS_PORT
+  value: {{ .Values.cluster.busPort | quote }}
+{{- if .Values.auth.enabled }}
+- name: REDIS_PASSWORD
+  valueFrom:
+    secretKeyRef:
+      name: {{ include "redis-cluster.secretName" . }}
+      key: {{ include "redis-cluster.secretKey" . }}
+- name: REDISCLI_AUTH
+  valueFrom:
+    secretKeyRef:
+      name: {{ include "redis-cluster.secretName" . }}
+      key: {{ include "redis-cluster.secretKey" . }}
+{{- end }}
+{{- end -}}