Initial commit: demo-java-api with CI/CD

.gitea/workflows/build.yml

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+name: Build & Deploy Java API
+
+on:
+  push:
+    branches: [main]
+
+env:
+  REGISTRY: harbor.cjjhc.top/library
+  APP_NAME: demo-java-api
+
+jobs:
+  build:
+    runs-on: self-hosted
+
+    steps:
+      - name: Prepare workspace
+        run: |
+          WORK=/root/.cache/${{ env.APP_NAME }}
+          rm -rf "$WORK"
+          mkdir -p "$WORK"
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          path: ${{ env.APP_NAME }}
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Cache Maven packages
+        uses: actions/cache@v3
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-maven-
+
+      - name: Login to Harbor
+        run: docker login ${{ env.REGISTRY }} -u admin -p "${{ secrets.HARBOR_PASSWORD }}"
+
+      - name: Build with Maven
+        run: |
+          cd ${{ env.APP_NAME }}
+          mvn clean package -DskipTests
+
+      - name: Build & push Docker image
+        run: |
+          cd ${{ env.APP_NAME }}
+          SHORT=${GITHUB_SHA::8}
+          TAG="${{ env.REGISTRY }}/${{ env.APP_NAME }}:${SHORT}"
+          LATEST="${{ env.REGISTRY }}/${{ env.APP_NAME }}:latest"
+
+          docker build -t "${TAG}" -t "${LATEST}" .
+          docker push "${TAG}"
+          docker push "${LATEST}"
+          echo "✓ Pushed ${TAG}"
+
+      - name: Update image tag in values.yaml (commit-back GitOps)
+        run: |
+          cd ${{ env.APP_NAME }}
+          SHORT=${GITHUB_SHA::8}
+
+          # Update tag in values.yaml
+          sed -i "s/^  tag:.*/  tag: \"${SHORT}\"/" deploy/helm/values.yaml
+
+          # Configure git
+          git config user.email "ci@local"
+          git config user.name "gitea-ci"
+
+          # Commit and push
+          git add deploy/helm/values.yaml
+          git commit -m "ci: update image tag to ${SHORT}" || echo "nothing to commit"
+          git push origin main
+          echo "✓ Pushed values.yaml with tag ${SHORT}"

Dockerfile

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+# Multi-stage build for Spring Boot
+FROM maven:3.9-eclipse-temurin-17 AS builder
+
+WORKDIR /app
+COPY pom.xml .
+COPY src ./src
+RUN mvn clean package -DskipTests
+
+# Production stage
+FROM eclipse-temurin:17-jre-alpine
+
+WORKDIR /app
+COPY --from=builder /app/target/*.jar app.jar
+
+EXPOSE 8080
+
+HEALTHCHECK --interval=30s --timeout=3s CMD wget -q -O- http://localhost:8080/actuator/health || exit 1
+
+ENTRYPOINT ["java", "-jar", "app.jar"]

README.md

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+# Demo Java API
+
+A simple Spring Boot API for CI/CD demonstration.
+
+## API Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/` | GET | Returns API info with timestamp |
+| `/healthz` | GET | Health check endpoint |
+
+## Local Development
+
+```bash
+./mvnw spring-boot:run
+```
+
+## Build Docker Image
+
+```bash
+docker build -t demo-java-api .
+docker run -p 8080:8080 demo-java-api
+```
+
+## Project Structure
+
+```
+demo-java-api/
+├── pom.xml                              # Maven config
+├── Dockerfile                           # Multi-stage Docker build
+├── src/
+│   └── main/
+│       ├── java/com/example/demo/
+│       │   └── DemoJavaApiApplication.java
+│       └── resources/
+│           └── application.properties
+├── deploy/helm/
+│   ├── Chart.yaml
+│   ├── values.yaml
+│   └── templates/
+│       └── deployment.yaml
+└── .gitea/workflows/
+    └── build.yml                       # Gitea CI workflow
+```

deploy/helm/Chart.yaml

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+apiVersion: v2
+name: demo-java-api
+description: A Helm chart for demo-java-api
+type: application
+version: 1.0.0
+appVersion: "1.0.0"

deploy/helm/templates/deployment.yaml

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+{{- define "fullname" -}}
+{{- .Chart.Name }}
+{{- end }}
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Chart.Name }}
+  labels:
+    app: {{ .Chart.Name }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Chart.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ .Chart.Name }}
+    spec:
+      containers:
+        - name: {{ .Chart.Name }}
+          image: "{{ .Values.image.registry }}/{{ .Values.image.name }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - containerPort: {{ .Values.service.port }}
+              name: http
+          livenessProbe:
+            {{- if .Values.probes.liveness.enabled }}
+            httpGet:
+              path: {{ .Values.probes.liveness.path }}
+              port: {{ .Values.probes.liveness.port }}
+            initialDelaySeconds: 30
+            periodSeconds: 10
+            {{- else }}
+            exec:
+              command: ["true"]
+            {{- end }}
+          readinessProbe:
+            {{- if .Values.probes.readiness.enabled }}
+            httpGet:
+              path: {{ .Values.probes.readiness.path }}
+              port: {{ .Values.probes.readiness.port }}
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            {{- else }}
+            exec:
+              command: ["true"]
+            {{- end }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          env:
+            {{- toYaml .Values.env | nindent 12 }}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Chart.Name }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: {{ .Chart.Name }}
+{{- if .Values.ingress.enabled }}
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ .Chart.Name }}
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: web
+spec:
+  rules:
+    - host: {{ .Values.ingress.host }}
+      http:
+        paths:
+          - path: {{ .Values.ingress.path }}
+            pathType: Prefix
+            backend:
+              service:
+                name: {{ .Chart.Name }}
+                port:
+                  number: {{ .Values.service.port }}
+{{- end }}

deploy/helm/values.yaml

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+# Default values
+image:
+  registry: harbor.cjjhc.top/library
+  name: demo-java-api
+  tag: "latest"
+  pullPolicy: Always
+
+replicaCount: 2
+
+service:
+  type: ClusterIP
+  port: 8080
+
+ingress:
+  enabled: true
+  className: traefik
+  host: demo-java-api.local
+  path: /
+
+resources:
+  requests:
+    cpu: 500m
+    memory: 512Mi
+  limits:
+    cpu: 1000m
+    memory: 1Gi
+
+env: []
+
+probes:
+  liveness:
+    enabled: true
+    path: /healthz
+    port: 8080
+  readiness:
+    enabled: true
+    path: /healthz
+    port: 8080

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.0</version>
+        <relativePath/>
+    </parent>
+
+    <groupId>com.example</groupId>
+    <artifactId>demo-java-api</artifactId>
+    <version>1.0.0</version>
+    <name>demo-java-api</name>
+    <description>Demo Java API for CI/CD testing</description>
+
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/java/com/example/demo/DemoJavaApiApplication.java

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+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.Map;
+
+@SpringBootApplication
+@RestController
+public class DemoJavaApiApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoJavaApiApplication.class, args);
+    }
+
+    @GetMapping("/")
+    public Map<String, Object> home() {
+        Map<String, Object> response = new HashMap<>();
+        response.put("message", "Hello from Java API");
+        response.put("version", "1.0.0");
+        response.put("timestamp", Instant.now().toString());
+        return response;
+    }
+
+    @GetMapping("/healthz")
+    public Map<String, String> health() {
+        Map<String, String> response = new HashMap<>();
+        response.put("status", "OK");
+        return response;
+    }
+}

src/main/resources/application.properties

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+server.port=8080
+spring.application.name=demo-java-api
+
+management.endpoints.web.exposure.include=health,info
+management.endpoint.health.show-details=always