Feature/bot docker image (#21)

* initial docker file
* adjust docker compose and create template config
* added kubernetes setup
* gamejam bot wait for database
* Added a Persistent volume claim for the database

Co-authored-by: Florian Fülling <[email protected]>

Author: yannicklamprecht

.gitignore

@@ -37,3 +37,4 @@ buildNumber.properties
 /out/
 *.db
 *.sqlite
+/conf/dev/config.json

conf/dev/temp.config.json

@@ -0,0 +1,20 @@
+{
+  "baseSettings" : {
+    "token" : "",
+    "botOwner" : [ ]
+  },
+  "database" : {
+    "host" : "database",
+    "port" : "5432",
+    "database" : "db",
+    "schema" : "public",
+    "user" : "postgres",
+    "password" : "changeme",
+    "poolSize" : 5
+  },
+  "api" : {
+    "host" : "0.0.0.0",
+    "port" : 8888,
+    "token" : "letmein"
+  }
+}

docker/bot.DockerFile

@@ -0,0 +1,8 @@
+FROM openjdk:18
+
+WORKDIR /app
+
+ADD bot/build/libs/bot-1.0-all.jar bot.jar
+ADD conf/dev/config.json config.json
+
+ENTRYPOINT ["java", "-Dbot.config=./config.json","-jar", "bot.jar"]

docker/docker-compose.yml

@@ -0,0 +1,28 @@
+version: v3
+
+services:
+  bot:
+    image: game-jam-bot
+    build:
+      dockerfile: docker/bot.DockerFile
+      context: ..
+    networks:
+      - plugin-jam
+    depends_on:
+      - database
+    ports:
+      - 8888:8888
+  database:
+    image: postgres:14.2
+    restart: always
+    user: postgres
+    environment:
+      POSTGRES_PASSWORD: "changeme"
+      POSTGRES_USER: "postgres"
+      POSTGRES_DB: "db"
+    networks:
+      - plugin-jam
+networks:
+  plugin-jam:
+    name: "plugin-jam"
+    external: false

docker/kubernetes/database.yaml

@@ -0,0 +1,53 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: database
+spec:
+  template:
+    metadata:
+      labels:
+        app: database
+    spec:
+      containers:
+        - env:
+            - name: POSTGRES_DB
+              value: db
+            - name: POSTGRES_PASSWORD
+              value: changeme
+            - name: POSTGRES_USER
+              value: postgres
+          image: postgres:14.2
+          name: database
+          volumeMounts:
+            - mountPath: "var/lib/postgresql/data"
+              name: postgres-data
+      volumes:
+        - name: postgres-data
+          persistentVolumeClaim:
+            claimName: postgres-data
+  selector:
+    matchLabels:
+      app: database
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: database
+spec:
+  selector:
+    app: database
+  ports:
+    - name: postgres
+      protocol: TCP
+      port: 5432
+---
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: postgres-data
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 3Gi

docker/kubernetes/game-jam-bot.yaml

@@ -0,0 +1,38 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: bot
+spec:
+  template:
+    metadata:
+      labels:
+        app: bot
+    spec:
+      containers:
+        - name: bot
+          image: game-jam-bot
+          imagePullPolicy: IfNotPresent
+          ports:
+            - containerPort: 8888
+              name: jam-bot
+      initContainers:
+        - name: init-myservice
+          image: busybox:1.28
+          command: [ 'sh', '-c', "until nslookup database.default.svc.cluster.local; do echo waiting for myservice; sleep 2; done" ]
+
+  selector:
+    matchLabels:
+      app: bot
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: bot-01
+spec:
+  ports:
+    - name: http
+      port: 80
+      targetPort: jam-bot
+      protocol: TCP
+  selector:
+    app: bot

docker/kubernetes/ingress.yaml

@@ -0,0 +1,27 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: game-jam-bot-ingres
+  annotations:
+    kubernetes.io/ingress.class: traefik
+    traefik.ingress.kubernetes.io/router.middlewares: default-game-jam-strip-prefix@kubernetescrd
+spec:
+  rules:
+    - http:
+        paths:
+          - path: /game-jam
+            backend:
+              service:
+                name: bot-01
+                port:
+                  name: http
+            pathType: Prefix
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: game-jam-strip-prefix
+spec:
+  stripPrefix:
+    prefixes:
+      - /game-jam

docker/kubernetes/kustomization.yaml

@@ -0,0 +1,7 @@
+kind: Kustomization
+apiVersion: kustomize.config.k8s.io/v1beta1
+
+resources:
+  - ingress.yaml
+  - database.yaml
+  - game-jam-bot.yaml