first commit

Dockerfile

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+# Use an official Python runtime as a parent image
+FROM python:3.9-slim
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Copy the current directory contents into the container at /app
+COPY . /app
+
+# Install any needed packages specified in requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Install Java (OpenJDK) in the container
+RUN apt-get update && apt-get install -y openjdk-11-jdk
+
+# Set environment variables for Java
+ENV JAVA_HOME /usr/lib/jvm/java-11-openjdk-amd64
+ENV PATH $JAVA_HOME/bin:$PATH
+
+# Define the command to run your Python script which interacts with Java
+CMD ["python", "config.py"]

helm/charts.yml

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+apiVersion: v2
+name: java-app-chart
+description: A Helm chart for deploying a Java application
+version: 0.1.0

helm/templates/deployment.yml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "java-app-chart.fullname" . }}
+  labels:
+    app: {{ include "java-app-chart.name" . }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ include "java-app-chart.name" . }}
+  template:
+    metadata:
+      labels:
+        app: {{ include "java-app-chart.name" . }}
+    spec:
+      containers:
+      - name: java-app
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        ports:
+        - containerPort: 8080

helm/templates/hpa.yml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2beta2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "java-app-chart.fullname" . }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "java-app-chart.name" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+  - type: Resource
+    resource:
+      name: cpu
+      targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+{{- end }}

helm/templates/service.yml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Values.service.name }}
+spec:
+  selector:
+    app: {{ include "java-app-chart.name" . }}
+  ports:
+    - protocol: TCP
+      port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.targetPort }}

helm/values.yml

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+# Default values for java-app-chart.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+replicaCount: 3
+
+image:
+  repository: your-java-image
+  tag: latest
+  pullPolicy: IfNotPresent
+
+service:
+  name: java-app
+  port: 80
+  targetPort: 8080
+
+autoscaling:
+  enabled: true
+  minReplicas: 2
+  maxReplicas: 5
+  targetCPUUtilizationPercentage: 50