K8s deployment :wip

Author: jaguililla

.dockerignore

@@ -1,5 +1,3 @@
 
 *
-!/build/distributions/*
-!/build/native/nativeCompile/*
 !/build/todo_backend/

.github/workflows/push.yml

@@ -6,10 +6,20 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: graalvm/setup-graalvm@v1
+      - uses: actions/cache@v4
         with:
-          version: latest
-          distribution: graalvm
-          java-version: 21
-          cache: gradle
-      - run: ./gradlew nativeTest
+          path: ~/.sdkman
+          key: "${{ runner.os }}-sdkman-${{ hashFiles('.sdkmanrc') }}"
+          restore-keys: "${{ runner.os }}-sdkman-"
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: "${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/*.properties') }}"
+          restore-keys: "${{ runner.os }}-gradle-"
+      - run: curl -s "https://get.sdkman.io?rcupdate=false" | bash
+      - run: |
+          source "$HOME/.sdkman/bin/sdkman-init.sh"
+          sdk env install
+          ./gradlew jpackage

jpackage.dockerfile renamed to Dockerfile

@@ -1,8 +1,6 @@
 
 # Todo
-Todo backend example for [Todo Backend](http://www.todobackend.com/index.html) using Hexagon. Built
-with [Travis CI](https://travis-ci.org) and hosted at Heroku here:
-[https://todo-backend-hexagonkt.herokuapp.com/](https://todo-backend-hexagonkt.herokuapp.com/)
+Todo backend example for [Todo Backend](http://www.todobackend.com/index.html) using Hexagon.
 
 The spec is:
 
@@ -54,6 +52,7 @@ Response:
 ```
 
 PATCH `/tasks/{id}`
+
 Request:
 ```
 {
@@ -73,16 +72,21 @@ Response:
 }
 ```
 DELETE `/tasks/{id}`
+
 Response: 200 OK
 
 DELETE `/tasks`
+
 Response: 200 OK
 
 ### Build
-Import the gradle project to build the code.
+```bash
+./gradlew build jpackage
+docker compose --profile local build
+```
 
 ### Deploy
-Set the environment variable `SERVICE_serviceURL` to whatever your host is
+Set the environment variable `SERVICE_URL` to whatever your host is
 to generate the correct url for tasks.
 
-Set `SERVICE_mongoDbUrl` to the url for your MongoDb database.
+Set `MONGODB_URL` to the url for your MongoDb database.

README.md

@@ -11,12 +11,11 @@ val logbackVersion = "1.5.6"
 val gradleScripts = "https://raw.githubusercontent.com/hexagontk/hexagon/$hexagonVersion/gradle"
 
 ext.set("modules", "java.xml,java.naming")
-ext.set("options", "-Xms64M -Xmx1G -XX:+UseNUMA")
+ext.set("options", "-Xms32M -Xmx128m -XX:+UseNUMA")
 ext.set("applicationClass", "com.hexagontk.todo.backend.ApplicationKt")
 
 apply(from = "$gradleScripts/kotlin.gradle")
 apply(from = "$gradleScripts/application.gradle")
-apply(from = "$gradleScripts/native.gradle")
 
 dependencies {
     implementation("com.hexagonkt:http_server_jetty:$hexagonVersion")

build.gradle.kts

@@ -17,7 +17,7 @@ services:
     depends_on: [ mongodb ]
     image: ${REGISTRY:-}todo
     build:
-      dockerfile: jpackage.dockerfile
+      dockerfile: Dockerfile
     environment:
       GLOBAL_LOG_LEVEL: warn
       APPLICATION_LOG_LEVEL: info

docker-compose.yaml

@@ -8,4 +8,7 @@ metadata:
 
 data:
   bindAddress: "0.0.0.0"
-  mongodbUrl: "mongodb://mongodb"
+  mongodbUrl: "mongodb://root:password@mongodb/todo?authSource=admin"
+  mongodbRootUsername: "root"
+  mongodbRootPassword: "password"
+  mongodbDatabase: "todo"

k8s/config.yaml

@@ -24,15 +24,31 @@ spec:
       annotations:
         environment: local
     spec:
+      restartPolicy: Always
       containers:
         - image: docker.io/mongo:7-jammy
           name: mongodb
+          env:
+            - name: MONGO_INITDB_ROOT_USERNAME
+              valueFrom:
+                configMapKeyRef:
+                  name: todo-configmap
+                  key: mongodbRootUsername
+            - name: MONGO_INITDB_ROOT_PASSWORD
+              valueFrom:
+                configMapKeyRef:
+                  name: todo-configmap
+                  key: mongodbRootPassword
+            - name: MONGO_INITDB_DATABASE
+              valueFrom:
+                configMapKeyRef:
+                  name: todo-configmap
+                  key: mongodbDatabase
           ports:
             - containerPort: 27017
           volumeMounts:
             - mountPath: /data/db
               name: mongodb
-      restartPolicy: Always
       volumes:
         - name: mongodb
           persistentVolumeClaim:

k8s/mongodb.yaml

@@ -24,23 +24,23 @@ spec:
         app: todo
         type: backend
     spec:
+      restartPolicy: Always
       containers:
-        - env:
-            - name: bindAddress
+        - image: k3d.localhost:5000/todo
+          name: todo
+          env:
+            - name: BIND_ADDRESS
               valueFrom:
                 configMapKeyRef:
                   name: todo-configmap
                   key: bindAddress
-            - name: mongodbUrl
+            - name: MONGODB_URL
               valueFrom:
                 configMapKeyRef:
                   name: todo-configmap
                   key: mongodbUrl
-          image: k3d.localhost:5000/todo
-          name: todo
           ports:
             - containerPort: 2010
-      restartPolicy: Always
 
 ---
 
@@ -57,7 +57,9 @@ metadata:
     type: backend
 
 spec:
+  type: NodePort
   ports:
-    - port: 3090
+    - port: 2010
+      nodePort: 31080
   selector:
     io.kompose.service: todo

k8s/todo.yaml

@@ -1,9 +1,7 @@
 package com.hexagontk.todo.backend
 
 import com.hexagonkt.converters.ConvertersManager
-import com.hexagonkt.core.ALL_INTERFACES
-import com.hexagonkt.core.getPath
-import com.hexagonkt.core.requirePath
+import com.hexagonkt.core.*
 import com.hexagonkt.http.server.HttpServer
 import com.hexagonkt.http.server.HttpServerSettings
 import com.hexagonkt.http.server.jetty.JettyServletAdapter
@@ -13,8 +11,11 @@ import com.hexagontk.todo.backend.stores.MongoDbTaskStore
 internal class Application {
     private val server: HttpServer = HttpServer(
         adapter = JettyServletAdapter(minThreads = 4),
-        settings = HttpServerSettings(bindPort = 2010, bindAddress = ALL_INTERFACES),
-        handler = Router(store = MongoDbTaskStore()).handler
+        handler = Router(store = MongoDbTaskStore()).handler,
+        settings = HttpServerSettings(
+            bindPort = 2010,
+            bindAddress = Jvm.systemSetting("BIND_ADDRESS", LOOPBACK_INTERFACE)
+        ),
     )
 
     fun start() {

native.dockerfile

@@ -6,5 +6,5 @@ data class Task(
     val order: Int? = null,
     val completed: Boolean? = false
 ) {
-    val url = "${System.getenv("SERVICE_serviceURL")}/tasks/$id"
+    val url = "${System.getenv("SERVICE_URL")}/tasks/$id"
 }

src/main/kotlin/Application.kt

@@ -1,13 +1,14 @@
 package com.hexagontk.todo.backend.stores
 
+import com.hexagonkt.core.Jvm
 import com.hexagonkt.store.mongodb.MongoDbStore
 import com.hexagontk.todo.backend.entities.Task
 
 class MongoDbTaskStore: TaskStore {
     private val store = MongoDbStore(
         Task::class,
         Task::id,
-        System.getenv("MONGODB_URL") ?: "mongodb://root:password@localhost/todo?authSource=admin",
+        Jvm.systemSetting("MONGODB_URL", "mongodb://root:password@localhost/todo?authSource=admin"),
     )
 
     override fun findAll(): List<Task> {