Initial miniMirror chart

This patch is a part of series of patches related to miniMirror chart.

This creates the initial miniMirror chart with the following k8s objects:
- deployment
- service
- ingress

This adds new tests to the airship-utils check gate related to Helm charts:
- helm lint
- helm package
- helm install

Integration with openstack-helm-infra will be added in a follow-up.

Change-Id: I6f5a3edcd66c3386fbab3b87c421b96f7198fdf1

Makefile

@@ -14,13 +14,13 @@
 
 IMAGE_PREFIX               ?= airshipit
 IMAGE_TAG                  ?= untagged
-IMAGE_NAME                 := aptly
+IMAGE_NAME                 := mini-mirror
 COMMIT                     ?= commit-id
 
 DOCKER_REGISTRY            ?= quay.io
 PUSH_IMAGE                 ?= false
 
-HELM                       := $(BUILD_DIR)/helm
+HELM                       := helm
 
 PROXY                      ?= http://proxy.foo.com:8000
 NO_PROXY                   ?= localhost,127.0.0.1,.svc.cluster.local
@@ -30,11 +30,13 @@ UBUNTU_BASE_IMAGE          ?= ubuntu:16.04
 
 IMAGE:=${DOCKER_REGISTRY}/${IMAGE_PREFIX}/$(IMAGE_NAME):${IMAGE_TAG}
 
+CHART                       := charts/mini-mirror
+
 .PHONY: validate
 validate: lint test
 
 .PHONY: test
-test: test-containers
+test: test-containers test-charts
 
 .PHONY: test-containers
 test-containers: clean build
@@ -48,6 +50,11 @@ test-containers: clean build
 		--volume $(shell pwd)/tools:/opt \
 		$(UBUNTU_BASE_IMAGE) /opt/install_packages.sh
 
+.PHONY: test-charts
+test-charts: helm-lint charts
+	$(HELM) delete mini-mirror || true
+	$(HELM) install --debug -n mini-mirror mini-mirror-*.tgz
+
 .PHONY: clean
 clean:
 	docker rm -f aptly || true
@@ -86,3 +93,13 @@ endif
 .PHONY: lint-install
 lint-install:
 	apt-get install -y shellcheck
+
+.PHONY: helm-lint
+helm-lint:
+	$(HELM) lint $(CHART)
+
+# Create tgz of the chart
+.PHONY: charts
+charts:
+	$(HELM) dep up $(CHART)
+	$(HELM) package $(CHART)

charts/mini-mirror/.helmignore

@@ -0,0 +1,21 @@
+# 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
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj

charts/mini-mirror/Chart.yaml

@@ -0,0 +1,7 @@
+apiVersion: v1
+appVersion: "1.0"
+description: A Helm chart for miniMirror
+name: mini-mirror
+version: 0.1.0
+maintainers:
+- name: Airship

charts/mini-mirror/templates/NOTES.txt

@@ -0,0 +1,19 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range .Values.ingress.hosts }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ . }}{{ $.Values.ingress.path }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "mini-mirror.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get svc -w {{ include "mini-mirror.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "mini-mirror.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
+  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 "mini-mirror.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl port-forward $POD_NAME 8080:80
+{{- end }}

charts/mini-mirror/templates/_helpers.tpl

@@ -0,0 +1,32 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "mini-mirror.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 "mini-mirror.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 "mini-mirror.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

charts/mini-mirror/templates/deployment.yaml

@@ -0,0 +1,51 @@
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  name: {{ include "mini-mirror.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "mini-mirror.name" . }}
+    helm.sh/chart: {{ include "mini-mirror.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ include "mini-mirror.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: {{ include "mini-mirror.name" . }}
+        app.kubernetes.io/instance: {{ .Release.Name }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+    {{- end }}

charts/mini-mirror/templates/ingress.yaml

@@ -0,0 +1,38 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "mini-mirror.fullname" . -}}
+{{- $ingressPath := .Values.ingress.path -}}
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    app.kubernetes.io/name: {{ include "mini-mirror.name" . }}
+    helm.sh/chart: {{ include "mini-mirror.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- with .Values.ingress.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+{{- if .Values.ingress.tls }}
+  tls:
+  {{- range .Values.ingress.tls }}
+    - hosts:
+      {{- range .hosts }}
+        - {{ . | quote }}
+      {{- end }}
+      secretName: {{ .secretName }}
+  {{- end }}
+{{- end }}
+  rules:
+  {{- range .Values.ingress.hosts }}
+    - host: {{ . | quote }}
+      http:
+        paths:
+          - path: {{ $ingressPath }}
+            backend:
+              serviceName: {{ $fullName }}
+              servicePort: http
+  {{- end }}
+{{- end }}

charts/mini-mirror/templates/service.yaml

@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "mini-mirror.fullname" . }}
+  labels:
+    app.kubernetes.io/name: {{ include "mini-mirror.name" . }}
+    helm.sh/chart: {{ include "mini-mirror.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app.kubernetes.io/name: {{ include "mini-mirror.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}

charts/mini-mirror/values.yaml

@@ -0,0 +1,48 @@
+# Default values for mini-mirror.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+replicaCount: 1
+
+image:
+  repository: docker.io/amadev/mini-mirror
+  tag: latest
+  pullPolicy: IfNotPresent
+
+nameOverride: "mini-mirror"
+fullnameOverride: "mini-mirror"
+
+service:
+  type: ClusterIP
+  port: 8889
+
+ingress:
+  enabled: false
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  path: /
+  hosts:
+    - cluster.local
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - cluster.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
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}