From e1f7b3febade103348edbb19658ea7cf20d9e433 Mon Sep 17 00:00:00 2001
From: Felipe Martin Garcia <812088+fmartingr@users.noreply.github.com>
Date: Thu, 11 Aug 2022 21:28:08 +0200
Subject: [PATCH] helm: added chart (#12)

---
 helm/.helmignore                          | 23 ++++++
 helm/Chart.yaml                           | 13 +++
 helm/README.md                            | 17 ++++
 helm/templates/NOTES.txt                  | 22 +++++
 helm/templates/_helpers.tpl               | 62 ++++++++++++++
 helm/templates/ingress.yaml               | 61 ++++++++++++++
 helm/templates/service.yaml               | 15 ++++
 helm/templates/serviceaccount.yaml        | 12 +++
 helm/templates/statefulset.yaml           | 62 ++++++++++++++
 helm/templates/tests/test-connection.yaml | 15 ++++
 helm/values.local.yaml                    |  2 +
 helm/values.yaml                          | 99 +++++++++++++++++++++++
 12 files changed, 403 insertions(+)
 create mode 100644 helm/.helmignore
 create mode 100644 helm/Chart.yaml
 create mode 100644 helm/README.md
 create mode 100644 helm/templates/NOTES.txt
 create mode 100644 helm/templates/_helpers.tpl
 create mode 100644 helm/templates/ingress.yaml
 create mode 100644 helm/templates/service.yaml
 create mode 100644 helm/templates/serviceaccount.yaml
 create mode 100644 helm/templates/statefulset.yaml
 create mode 100644 helm/templates/tests/test-connection.yaml
 create mode 100644 helm/values.local.yaml
 create mode 100644 helm/values.yaml

diff --git a/helm/.helmignore b/helm/.helmignore
new file mode 100644
index 0000000..0e8a0eb
--- /dev/null
+++ b/helm/.helmignore
@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/
diff --git a/helm/Chart.yaml b/helm/Chart.yaml
new file mode 100644
index 0000000..22a9174
--- /dev/null
+++ b/helm/Chart.yaml
@@ -0,0 +1,13 @@
+apiVersion: v2
+name: bazaar
+description: A Helm chart for Kubernetes
+type: application
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.2.0
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "0.2.0"
diff --git a/helm/README.md b/helm/README.md
new file mode 100644
index 0000000..07d6a23
--- /dev/null
+++ b/helm/README.md
@@ -0,0 +1,17 @@
+# Bazaar Helm chart
+
+## Install the chart
+
+```
+helm install --namespace bazaar --atomic  bazaar .
+```
+
+## Upgrading the chart
+
+```
+helm upgrade --namespace bazaar --atomic bazaar .
+```
+
+## Using locally with latest dev image
+
+A `values.local.yml` file is provided which will point the installation to the latest `dev` image.
diff --git a/helm/templates/NOTES.txt b/helm/templates/NOTES.txt
new file mode 100644
index 0000000..bcb33ab
--- /dev/null
+++ b/helm/templates/NOTES.txt
@@ -0,0 +1,22 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "bazaar.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "bazaar.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "bazaar.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "bazaar.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}
diff --git a/helm/templates/_helpers.tpl b/helm/templates/_helpers.tpl
new file mode 100644
index 0000000..0d2f948
--- /dev/null
+++ b/helm/templates/_helpers.tpl
@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "bazaar.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 "bazaar.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 "bazaar.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "bazaar.labels" -}}
+helm.sh/chart: {{ include "bazaar.chart" . }}
+{{ include "bazaar.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "bazaar.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "bazaar.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "bazaar.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "bazaar.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
diff --git a/helm/templates/ingress.yaml b/helm/templates/ingress.yaml
new file mode 100644
index 0000000..92b000f
--- /dev/null
+++ b/helm/templates/ingress.yaml
@@ -0,0 +1,61 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "bazaar.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if and .Values.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }}
+  {{- if not (hasKey .Values.ingress.annotations "kubernetes.io/ingress.class") }}
+  {{- $_ := set .Values.ingress.annotations "kubernetes.io/ingress.class" .Values.ingress.className}}
+  {{- end }}
+{{- end }}
+{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1
+{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "bazaar.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if and .Values.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  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 (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }}
+            pathType: {{ .pathType }}
+            {{- end }}
+            backend:
+              {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+              {{- else }}
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+              {{- end }}
+          {{- end }}
+    {{- end }}
+{{- end }}
diff --git a/helm/templates/service.yaml b/helm/templates/service.yaml
new file mode 100644
index 0000000..a43d209
--- /dev/null
+++ b/helm/templates/service.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "bazaar.fullname" . }}
+  labels:
+    {{- include "bazaar.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.app.http.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "bazaar.selectorLabels" . | nindent 4 }}
diff --git a/helm/templates/serviceaccount.yaml b/helm/templates/serviceaccount.yaml
new file mode 100644
index 0000000..7ff5a33
--- /dev/null
+++ b/helm/templates/serviceaccount.yaml
@@ -0,0 +1,12 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "bazaar.serviceAccountName" . }}
+  labels:
+    {{- include "bazaar.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}
diff --git a/helm/templates/statefulset.yaml b/helm/templates/statefulset.yaml
new file mode 100644
index 0000000..2fc27b1
--- /dev/null
+++ b/helm/templates/statefulset.yaml
@@ -0,0 +1,62 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: {{ include "bazaar.fullname" . }}
+  labels:
+    {{- include "bazaar.labels" . | nindent 4 }}
+spec:
+  serviceName: {{ include "bazaar.fullname" . }}
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "bazaar.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "bazaar.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "bazaar.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 .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.app.http.port }}
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: {{ .Values.app.probes.liveness.path }}
+              port: http
+          readinessProbe:
+            httpGet:
+              path: {{ .Values.app.probes.readiness.path }}
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
diff --git a/helm/templates/tests/test-connection.yaml b/helm/templates/tests/test-connection.yaml
new file mode 100644
index 0000000..912e19f
--- /dev/null
+++ b/helm/templates/tests/test-connection.yaml
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "bazaar.fullname" . }}-test-connection"
+  labels:
+    {{- include "bazaar.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args: ['{{ include "bazaar.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never
diff --git a/helm/values.local.yaml b/helm/values.local.yaml
new file mode 100644
index 0000000..393fe3b
--- /dev/null
+++ b/helm/values.local.yaml
@@ -0,0 +1,2 @@
+image:
+  tag: "dev"
diff --git a/helm/values.yaml b/helm/values.yaml
new file mode 100644
index 0000000..4758bf4
--- /dev/null
+++ b/helm/values.yaml
@@ -0,0 +1,99 @@
+# Default values for bazaar.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: ghcr.io/fmartingr/bazaar
+  pullPolicy: IfNotPresent
+  # Overrides the image tag whose default is the chart appVersion.
+  # tag: "dev"
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: true
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+podAnnotations: {}
+
+podSecurityContext:
+  {}
+  # fsGroup: 2000
+
+securityContext:
+  {}
+  # capabilities:
+  #   drop:
+  #   - ALL
+  # readOnlyRootFilesystem: true
+  # runAsNonRoot: true
+  # runAsUser: 1000
+
+service:
+  type: ClusterIP
+  port: 8080
+
+ingress:
+  enabled: true
+  className: ""
+  annotations:
+    {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  hosts:
+    - host: bazaar.local
+      paths:
+        - path: /
+          pathType: ImplementationSpecific
+  tls: []
+  #  - secretName: bazaar-tls
+  #    hosts:
+  #      - bazaar.local
+
+resources:
+  {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+autoscaling:
+  enabled: false
+  minReplicas: 1
+  maxReplicas: 100
+  targetCPUUtilizationPercentage: 80
+  # targetMemoryUtilizationPercentage: 80
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+probes:
+  path: /liveness
+
+app:
+  http:
+    port: 8080
+
+  probes:
+    liveness:
+      path: /liveness
+    readiness:
+      path: /liveness