jenkins-x-buildpacks#33 | Fosso, Yohane, Ola | Add Gradle5 buildpack

packs/gradle5/.dockerignore

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+draft.toml
+charts/
+NOTICE
+LICENSE
+README.md

packs/gradle5/.helmignore

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+# 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
+*.png
+
+# known compile time folders
+target/
+node_modules/
+vendor/

packs/gradle5/Dockerfile

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+FROM openjdk:8-jdk-slim
+ENV PORT 8080
+EXPOSE 8080
+COPY build/libs/*.jar /opt/app.jar
+WORKDIR /opt
+CMD ["java", "-XX:+UnlockExperimentalVMOptions", "-XX:+UseCGroupMemoryLimitForHeap", "-jar", "app.jar"]

packs/gradle5/charts/.helmignore

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+# 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

packs/gradle5/charts/Chart.yaml

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+name: gradle
+description: A Helm chart for Kubernetes
+apiVersion: v1
+version: 0.1.0-SNAPSHOT
+icon: https://raw.githubusercontent.com/jenkins-x/jenkins-x-platform/master/images/java.png

packs/gradle5/charts/Makefile

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+CHART_REPO := http://jenkins-x-chartmuseum:8080
+CURRENT=$(pwd)
+NAME := REPLACE_ME_APP_NAME
+OS := $(shell uname)
+RELEASE_VERSION := $(shell cat ../../VERSION)
+
+build: clean
+	rm -rf requirements.lock
+	helm dependency build
+	helm lint
+
+install: clean build
+	helm install . --name ${NAME}
+
+upgrade: clean build
+	helm upgrade ${NAME} .
+
+delete:
+	helm delete --purge ${NAME}
+
+clean:
+	rm -rf charts
+	rm -rf ${NAME}*.tgz
+
+release: clean
+	helm dependency build
+	helm lint
+	helm init --client-only
+	helm package .
+	curl --fail -u $(CHARTMUSEUM_CREDS_USR):$(CHARTMUSEUM_CREDS_PSW) --data-binary "@$(NAME)-$(shell sed -n 's/^version: //p' Chart.yaml).tgz" $(CHART_REPO)/api/charts
+	rm -rf ${NAME}*.tgz%
+
+tag:
+ifeq ($(OS),Darwin)
+	sed -i "" -e "s/version:.*/version: $(RELEASE_VERSION)/" Chart.yaml
+	sed -i "" -e "s/tag:.*/tag: $(RELEASE_VERSION)/" values.yaml
+else ifeq ($(OS),Linux)
+	sed -i -e "s/version:.*/version: $(RELEASE_VERSION)/" Chart.yaml
+	sed -i -e "s|repository:.*|repository: $(DOCKER_REGISTRY)\/REPLACE_ME_DOCKER_REGISTRY_ORG\/REPLACE_ME_APP_NAME|" values.yaml
+	sed -i -e "s/tag:.*/tag: $(RELEASE_VERSION)/" values.yaml
+else
+	echo "platfrom $(OS) not supported to release from"
+	exit -1
+endif
+	git add --all
+	git commit -m "release $(RELEASE_VERSION)" --allow-empty # if first release then no verion update is performed
+	git tag -fa v$(RELEASE_VERSION) -m "Release version $(RELEASE_VERSION)"
+	git push origin v$(RELEASE_VERSION)

packs/gradle5/charts/README.md

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+# Java application

packs/gradle5/charts/templates/NOTES.txt

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+
+Get the application URL by running these commands:
+
+kubectl get ingress {{ template "fullname" . }}

packs/gradle5/charts/templates/_helpers.tpl

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+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "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).
+*/}}
+{{- define "fullname" -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}

packs/gradle5/charts/templates/deployment.yaml

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+{{- if .Values.knativeDeploy }}
+{{- else }}
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: {{ template "fullname" . }}
+  labels:
+    draft: {{ default "draft-app" .Values.draft }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+spec:
+  replicas: {{ .Values.replicaCount }}
+  template:
+    metadata:
+      labels:
+        draft: {{ default "draft-app" .Values.draft }}
+        app: {{ template "fullname" . }}
+{{- if .Values.podAnnotations }}
+      annotations:
+{{ toYaml .Values.podAnnotations | indent 8 }}
+{{- end }}
+    spec:
+      containers:
+      - name: {{ .Chart.Name }}
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        env:
+{{- range $pkey, $pval := .Values.env }}
+        - name: {{ $pkey }}
+          value: {{ quote $pval }}
+{{- end }}
+        ports:
+        - containerPort: {{ .Values.service.internalPort }}
+        livenessProbe:
+          httpGet:
+            path: {{ .Values.probePath }}
+            port: {{ .Values.service.internalPort }}
+          initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
+          periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
+          successThreshold: {{ .Values.livenessProbe.successThreshold }}
+          timeoutSeconds: {{ .Values.livenessProbe.timeoutSeconds }}
+        readinessProbe:
+          httpGet:
+            path: {{ .Values.probePath }}
+            port: {{ .Values.service.internalPort }}
+          periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
+          successThreshold: {{ .Values.readinessProbe.successThreshold }}
+          timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
+        resources:
+{{ toYaml .Values.resources | indent 12 }}
+      terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }}
+{{- end }}

packs/gradle5/charts/templates/ksvc.yaml

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+{{- if .Values.knativeDeploy }}
+apiVersion: serving.knative.dev/v1alpha1
+kind: Service
+metadata:
+{{- if .Values.service.name }}
+  name: {{ .Values.service.name }}
+{{- else }}
+  name: {{ template "fullname" . }}
+{{- end }}
+  labels:
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+spec:
+  runLatest:
+    configuration:
+      revisionTemplate:
+        spec:
+          container:
+            image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+            imagePullPolicy: {{ .Values.image.pullPolicy }}
+            env:
+{{- range $pkey, $pval := .Values.env }}
+            - name: {{ $pkey }}
+              value: {{ quote $pval }}
+{{- end }}
+            livenessProbe:
+              httpGet:
+                path: {{ .Values.probePath }}
+              initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
+              periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
+              successThreshold: {{ .Values.livenessProbe.successThreshold }}
+              timeoutSeconds: {{ .Values.livenessProbe.timeoutSeconds }}
+            readinessProbe:
+              httpGet:
+                path: {{ .Values.probePath }}
+              periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
+              successThreshold: {{ .Values.readinessProbe.successThreshold }}
+              timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
+            resources:
+{{ toYaml .Values.resources | indent 14 }}
+{{- end }}

packs/gradle5/charts/templates/service.yaml

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+{{- if .Values.knativeDeploy }}
+{{- else }}
+apiVersion: v1
+kind: Service
+metadata:
+{{- if .Values.service.name }}
+  name: {{ .Values.service.name }}
+{{- else }}
+  name: {{ template "fullname" . }}
+{{- end }}
+  labels:
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+{{- if .Values.service.annotations }}
+  annotations:
+{{ toYaml .Values.service.annotations | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+  - port: {{ .Values.service.externalPort }}
+    targetPort: {{ .Values.service.internalPort }}
+    protocol: TCP
+    name: http
+  selector:
+    app: {{ template "fullname" . }}
+{{- end }}

packs/gradle5/charts/values.yaml

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+# Default values for Gradle projects.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+replicaCount: 1
+image:
+  repository: draft
+  tag: dev
+  pullPolicy: IfNotPresent
+
+# define environment variables here as a map of key: value
+env:
+
+# enable this flag to use knative serve to deploy the app
+knativeDeploy: false
+
+service:
+  name: REPLACE_ME_APP_NAME
+  type: ClusterIP
+  externalPort: 80
+  internalPort: 8080
+  annotations:
+    fabric8.io/expose: "true"
+    fabric8.io/ingress.annotations: "kubernetes.io/ingress.class: nginx"
+resources:
+  limits:
+    cpu: 500m
+    memory: 512Mi
+  requests:
+    cpu: 400m
+    memory: 512Mi
+probePath: /health
+livenessProbe:
+  initialDelaySeconds: 60
+  periodSeconds: 10
+  successThreshold: 1
+  timeoutSeconds: 1
+readinessProbe:
+  periodSeconds: 10
+  successThreshold: 1
+  timeoutSeconds: 1

packs/gradle5/pipeline.yaml

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+extends:
+  file: ../gradle/pipeline.yaml
+agent:
+  label: jenkins-gradle5
+  container: gradle

packs/gradle5/preview/Chart.yaml

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+apiVersion: v1
+description: A Helm chart for Kubernetes
+name: preview
+icon: https://raw.githubusercontent.com/jenkins-x/jenkins-x-platform/master/images/java.png
+version: 0.1.0-SNAPSHOT

packs/gradle5/preview/Makefile

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+OS := $(shell uname)
+
+preview: 
+ifeq ($(OS),Darwin)
+	sed -i "" -e "s/version:.*/version: $(PREVIEW_VERSION)/" Chart.yaml
+	sed -i "" -e "s/version:.*/version: $(PREVIEW_VERSION)/" ../*/Chart.yaml
+	sed -i "" -e "s/tag:.*/tag: $(PREVIEW_VERSION)/" values.yaml
+else ifeq ($(OS),Linux)
+	sed -i -e "s/version:.*/version: $(PREVIEW_VERSION)/" Chart.yaml
+	sed -i -e "s/version:.*/version: $(PREVIEW_VERSION)/" ../*/Chart.yaml
+	sed -i -e "s|repository:.*|repository: $(DOCKER_REGISTRY)\/REPLACE_ME_DOCKER_REGISTRY_ORG\/REPLACE_ME_APP_NAME|" values.yaml
+	sed -i -e "s/tag:.*/tag: $(PREVIEW_VERSION)/" values.yaml
+else
+	echo "platfrom $(OS) not supported to release from"
+	exit -1
+endif
+	echo "  version: $(PREVIEW_VERSION)" >> requirements.yaml
+	jx step helm build

packs/gradle5/preview/requirements.yaml

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+# !! File must end with empty line !!
+dependencies:
+- alias: expose
+  name: exposecontroller
+  repository: http://chartmuseum.jenkins-x.io
+  version: 2.3.92
+- alias: cleanup
+  name: exposecontroller
+  repository: http://chartmuseum.jenkins-x.io
+  version: 2.3.92
+
+  # !! "alias: preview" must be last entry in dependencies array !!
+  # !! Place custom dependencies above !!
+- alias: preview
+  name: REPLACE_ME_APP_NAME
+  repository: file://../REPLACE_ME_APP_NAME

packs/gradle5/preview/values.yaml

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+
+expose:
+  Annotations:
+    helm.sh/hook: post-install,post-upgrade
+    helm.sh/hook-delete-policy: hook-succeeded
+  config:
+    exposer: Ingress
+    http: true
+    tlsacme: false
+
+cleanup:
+  Args:
+    - --cleanup
+  Annotations:
+    helm.sh/hook: pre-delete
+    helm.sh/hook-delete-policy: hook-succeeded
+
+preview:
+  image:
+    repository:
+    tag:
+    pullPolicy: IfNotPresent