Use YTT to generate k8s manifests

.gitignore

@@ -16,3 +16,5 @@
 /.project
 /.settings/
 /bin/
+
+/tools/

azure-pipelines.yaml

@@ -24,3 +24,51 @@ stages:
             displayName: Gradle Build
             inputs:
               jdkVersionOption: 1.11
+      - job: kubernetes
+        displayName: Kubernetes
+        pool:
+          vmImage: ubuntu-latest
+        steps:
+          - task: ShellScript@2
+            displayName: Generate Staging Manifest
+            inputs:
+              scriptPath: ./yttw.sh
+              args: >
+                -f kubernetes
+                -v image_tag=$(Build.BuildId)
+                -v args=debug
+                --output-files manifests/staging
+          - task: ShellScript@2
+            displayName: Generate Production Manifest
+            inputs:
+              scriptPath: ./yttw.sh
+              args: >
+                -f kubernetes
+                -v image_tag=$(Build.BuildId)
+                -v replica_count=2
+                --output-files manifests/production
+          - task: PublishPipelineArtifact@1
+            displayName: Publish Manifests
+            inputs:
+              targetPath: manifests
+              artifactName: manifests
+  - stage: Deploy
+    displayName: Deploy
+    dependsOn: assemble
+    condition:
+      not(eq(variables['build.reason'], 'PullRequest'))
+    jobs:
+      - job: push
+        displayName: Push
+        pool:
+          vmImage: ubuntu-latest
+        steps:
+          - task: Docker@2
+            displayName: Build and Push
+            inputs:
+              command: buildAndPush
+              containerRegistry: SteeltoeContainerRegistry
+              repository: initializr-config-server
+              tags: |
+                $(Build.BuildId)
+                latest

deploy/cloud-foundry/manifest.yaml

@@ -1,10 +0,0 @@
----
-applications:
-- name: initializr-config-server
-  buildpacks:
-    - https://github.com/cloudfoundry/java-buildpack.git#v4.32.1
-  path: ../../build/libs/Steeltoe.InitializrConfigServer-0.1.0-SNAPSHOT.jar
-  memory: 1024M
-  env:
-    JBP_CONFIG_JAVA_MAIN: '{ arguments: "--logging.level.org.springframework.web=debug" }'
-    JBP_CONFIG_OPEN_JDK_JRE: '{ jre: { version: 11.+ } }'

deploy/kubernetes/deployment.yaml

@@ -1,23 +0,0 @@
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: initializr-config-server
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: initializr-config-server
-  template:
-    metadata:
-      labels:
-        app: initializr-config-server
-    spec:
-      nodeSelector:
-        "beta.kubernetes.io/os": linux
-      containers:
-      - name: initializr-config-server
-        image: localhost:5000/initializr-config-server
-        args: ["--debug"]
-        ports:
-        - containerPort: 8888

deploy/kubernetes/service.yaml

@@ -1,11 +0,0 @@
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: initializr-config-server
-spec:
-  ports:
-  - port: 80
-    targetPort: 8888
-  selector:
-    app: initializr-config-server

kubernetes/defaults.yaml

@@ -0,0 +1,10 @@
+#@data/values-schema
+#@schema/type any=True
+---
+name: initializr-config-server
+image_name: steeltoe.azurecr.io/initializr-config-server
+image_tag: latest
+container_port: 8888
+service_port: 80
+replica_count: 1
+args: ""

kubernetes/manifest.yaml

@@ -0,0 +1,37 @@
+#@ load("@ytt:data", "data")
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: #@ data.values.name
+spec:
+  selector:
+    matchLabels:
+      app: #@ data.values.name
+  template:
+    metadata:
+      labels:
+        app: #@ data.values.name
+    spec:
+      nodeSelector:
+        "beta.kubernetes.io/os": linux
+      containers:
+      - name: #@ data.values.name
+        image: #@ "{}:{}".format(data.values.image_name, data.values.image_tag)
+        ports:
+        - containerPort: #@ int(data.values.container_port)
+        #@ if/end data.values.args:
+        args: #@ data.values.args.split()
+    replicas: #@ int(data.values.replica_count)
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: #@ data.values.name
+spec:
+  ports:
+  - port: #@ int(data.values.service_port)
+    targetPort: #@ int(data.values.container_port)
+  selector:
+    app: #@ data.values.name

tool.properties

@@ -0,0 +1,2 @@
+ytt_version=v0.36.0
+ytt_mirror=https://github.com/vmware-tanzu/carvel-ytt/releases/download

yttw.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+set -e
+
+# =========================================================================== #
+# wrapper for ytt                                                             #
+# =========================================================================== #
+
+base_dir=$(dirname $0)
+ytt=$base_dir/tools/ytt
+
+if [ ! -x $ytt ]; then
+  ytt_version=$(grep '^ytt_version=' $base_dir/tool.properties | cut -d= -f2)
+  ytt_mirror=$(grep '^ytt_mirror=' $base_dir/tool.properties | cut -d= -f2)
+  case $(uname -s) in
+    Darwin) platform=darwin ;;
+    Linux) platform=linux ;;
+    *)
+      echo "unsupported platform: $(uname -s)"
+      exit 1
+      ;;
+  esac
+  ytt_url=$ytt_mirror/$ytt_version/ytt-$platform-amd64
+  mkdir -p $(dirname $ytt)
+  wget $ytt_url -O $ytt
+  chmod +x $ytt
+fi
+
+exec $ytt $*