Added template library helm chart

helm/template/templates/_deployment.yaml

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+{{- define "template.deployment" -}}
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "template.fullname" . }}
+  labels:
+    {{- include "template.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "template.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "template.selectorLabels" . | nindent 8 }}
+    spec:
+      enableServiceLinks: {{ .Values.enableServiceLinks }}
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "template.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default "latest" }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          {{- if .Values.secrets }}
+          envFrom:
+            - secretRef:
+                name: {{ include "template.fullname" . }}
+          {{- end }}
+          env:
+          {{- if .Values.application.isSpring }}
+            - name: SPRING_PROFILES_ACTIVE
+              value: {{ .Values.application.profile }}
+          {{- end}}
+          {{- range .Values.environment }}
+            - name: {{ .name }}
+              value: {{ .value | quote }}
+          {{- end }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.application.port }}
+              protocol: TCP
+            {{- if .Values.application.isSpring }}
+            - name: http-actuator
+              containerPort: {{ .Values.application.actuatorPort }}
+              protocol: TCP
+            {{- end }}
+          {{- if .Values.livenessProbe.enabled }}
+          livenessProbe:
+            httpGet:
+              path: {{ .Values.livenessProbe.path }}
+              port: {{ .Values.livenessProbe.port }}
+            initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
+            periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
+          {{- end }}
+          {{- if .Values.readinessProbe.enabled }}
+          readinessProbe:
+            httpGet:
+              path: {{ .Values.readinessProbe.path }}
+              port: {{ .Values.readinessProbe.port }}
+            initialDelaySeconds: {{ .Values.readinessProbe.initialDelaySeconds }}
+            periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
+            timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
+          {{- end }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          {{- with .Values.containerSpec }}
+          {{- toYaml . | nindent 10 }}
+          {{- end }}
+          {{/*
+            Due to the asynchronous way Kubernetes shuts down applications there is a period of
+            time when requests can be sent to the application while an application is being terminated.
+            To deal with this we can configure a pre-stop sleep to allow enough time for requests to
+            stop being routed to the application before it is terminated.
+          */}}
+          lifecycle:
+            preStop:
+              exec:
+                  command: [ "sh", "-c", "sleep 10" ]
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.podSpec }}
+      {{- toYaml . | nindent 6 }}
+      {{- end }}
+{{- end }}

helm/template/templates/_helpers.tpl

@@ -0,0 +1,76 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "template.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "template.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 }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "template.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "template.labels" -}}
+helm.sh/chart: {{ include "template.chart" . }}
+{{ include "template.selectorLabels" . }}
+{{- if or .Chart.AppVersion .Values.image.tag }}
+app.kubernetes.io/version: {{ .Values.image.tag | default .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "template.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "template.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "template.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "template.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+
+{{- /*
+template.util.merge will merge two YAML templates and output the result.
+This takes an array of three values:
+- the top context
+- the template name of the overrides (destination)
+- the template name of the base (source)
+*/}}
+{{- define "template.util.merge" -}}
+{{- $top := first . -}}
+{{- $overrides := fromYaml (include (index . 1) $top) | default (dict ) -}}
+{{- $tpl := fromYaml (include (index . 2) $top) | default (dict ) -}}
+{{- toYaml (merge $overrides $tpl) -}}
+{{- end -}}

helm/template/templates/_hpa.yaml

@@ -0,0 +1,34 @@
+{{- define "template.hpa" -}}
+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "template.fullname" . }}
+  labels:
+    {{- include "template.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "template.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+    {{- end }}
+    {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    {{- end }}
+{{- end }}
+{{- end }}

helm/template/templates/_ingress.yaml

@@ -0,0 +1,47 @@
+{{- define "template.ingress" -}}
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "template.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "template.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.ingress.className }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            {{- if and .pathType }}
+            pathType: {{ .pathType }}
+            {{- end }}
+            backend:
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+          {{- end }}
+    {{- end }}
+{{- end }}
+{{- end }}

helm/template/templates/_secret.yaml

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+{{- define "template.secret" -}}
+{{- if .Values.secrets }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "template.fullname" . }}
+  labels:
+    {{- include "template.labels" . | nindent 4 }}
+stringData:
+  {{- with .Values.secrets }}
+  {{- toYaml . | nindent 2 }}
+  {{- end}}
+{{- end }}
+{{- end }}

helm/template/templates/_service.yaml

@@ -0,0 +1,23 @@
+{{- define "template.service" -}}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "template.fullname" . }}
+  labels:
+    {{- include "template.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - name: http
+      protocol: TCP
+      port: {{ .Values.service.port }}
+      targetPort: http
+    {{- if .Values.application.isSpring }}
+    - name: http-actuator
+      protocol: TCP
+      port: {{ .Values.service.actuatorPort }}
+      targetPort: http-actuator
+    {{- end }}
+  selector:
+    {{- include "template.selectorLabels" . | nindent 4 }}
+{{- end }}

helm/template/templates/_serviceaccount.yaml

@@ -0,0 +1,14 @@
+{{- define "template.serviceAccount" -}}
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "template.serviceAccountName" . }}
+  labels:
+    {{- include "template.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}
+{{- end }}