Setting up a production-grade CI/CD pipeline for Java projects is often difficult for developers and platform teams because the release process involves multiple moving parts:
- Semantic version management
- Snapshot handling
- Git tagging
- Maven release lifecycle
- GPG artifact signing
- Sonatype authentication
- Maven Central deployment
- Secure secret management
- Release traceability
- Automated publishing
Most developers understand application development but struggle with building a complete release engineering workflow.
This project acts as a CI/CD Release Automation Simulator that demonstrates how enterprise-grade release pipelines work for Java projects and other software projects.
It provides a real-world implementation of:
- CI/CD release automation
- Semantic versioning
- Automated release lifecycle
- Maven Central publishing
- GitHub Actions based release pipelines
- Secure artifact publishing
- Enterprise release engineering concepts
The goal of this project is to simulate and demonstrate:
- How CI/CD pipelines work
- How release automation is implemented
- How Maven Central publishing works
- How semantic versioning is managed
- How Git tags are created automatically
- How snapshot versions are maintained
- How enterprise release workflows are designed
This project can be used for:
- Learning CI/CD concepts
- Understanding release engineering
- Demonstrating GitHub Actions workflows
- Simulating enterprise release pipelines
- Building reusable release automation templates
This simulator demonstrates:
| Capability | Description |
|---|---|
| CI/CD Pipeline | End-to-end automated release workflow |
| Semantic Versioning | Major, Minor, Patch releases |
| Maven Release Lifecycle | Automated Maven release flow |
| Git Automation | Auto commits and tagging |
| Artifact Signing | GPG signed artifacts |
| Secure Secret Handling | GitHub Secrets usage |
| Maven Central Deployment | Sonatype publishing |
| Release Traceability | Git tag based tracking |
| Enterprise Release Engineering | Production-grade release process |
| Release Type | Example |
|---|---|
| major | 1.2.3 -> 2.0.0 |
| minor | 1.2.3 -> 1.3.0 |
| patch | 1.2.3 -> 1.2.4 |
┌──────────────────────────────┐
│ Developer Starts Release │
│ From GitHub Actions UI │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Select Release Type │
│ major / minor / patch │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Checkout Source Code │
│ Fetch Git History │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Setup Java Environment │
│ Configure Maven + Git │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Read Current Version │
│ From pom.xml │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Calculate New Release │
│ & Next Snapshot Version │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Import GPG Keys │
│ Configure Sonatype Access │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Maven Release Prepare │
│ - Remove SNAPSHOT │
│ - Create Release Commit │
│ - Create Git Tag │
│ - Update Snapshot Version │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Push Git Commits & Tags │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Build & Sign Artifacts │
│ Using Maven + GPG │
└──────────────┬───────────────┘
│
▼
┌──────────────────────────────┐
│ Publish To Sonatype │
│ Then Sync To Maven Central │
└──────────────────────────────┘
Before using this project, ensure the following setup is completed.
You need:
- A GitHub repository
- GitHub Actions enabled
- Admin access to configure secrets
This simulator assumes:
- Java project
- Maven build system
- Valid
pom.xml
Example:
<groupId>com.example</groupId>
<artifactId>sample-library</artifactId>
<version>1.0.0-SNAPSHOT</version>Basic understanding of:
- GitHub workflows
- CI/CD pipelines
- Git branching
- Release process
You must create:
- Sonatype OSSRH account
- Maven Central publishing access
Reference:
https://central.sonatype.org/
Maven Central requires signed artifacts.
You must generate:
- GPG public/private key pair
- Export private key
- Configure passphrase
Example:
gpg --full-generate-keyExport key:
gpg --armor --export-secret-keys YOUR_KEY_IDConfigure the following GitHub secrets.
| Secret | Description |
|---|---|
SONATYPE_USERNAME |
Sonatype username |
SONATYPE_PASSWORD |
Sonatype password |
| Secret | Description |
|---|---|
GPG_PRIVATE_KEY |
ASCII armored private key |
GPG_PASSPHRASE |
GPG passphrase |
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>3.0.1</version>
</plugin><plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<version>3.1.0</version>
</plugin><plugin>
<groupId>org.sonatype.plugins</groupId>
<artifactId>nexus-staging-maven-plugin</artifactId>
<version>1.6.13</version>
<extensions>true</extensions>
</plugin><distributionManagement>
<repository>
<id>central</id>
<url>https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/</url>
</repository>
</distributionManagement>Current project version:
1.4.2-SNAPSHOT
Developer selects:
minor
Pipeline automatically performs:
| Step | Result |
|---|---|
| Release Version | 1.5.0 |
| Git Tag | v1.5.0 |
| Next Snapshot | 1.5.1-SNAPSHOT |
| Maven Central Deployment | Successful |
After exploring this project, users will understand:
- CI/CD architecture
- Release engineering
- Maven Central publishing
- Semantic versioning
- GitHub Actions automation
- Artifact signing
- Enterprise release workflows
- Automated software delivery
This simulator demonstrates real-world enterprise concepts:
- Immutable releases
- Automated deployments
- Secure secret handling
- Artifact signing
- Release traceability
- Semantic versioning
- CI/CD governance
- Infrastructure automation
Use:
echo "release_version=$new_version" >> $GITHUB_OUTPUT- uses: actions/cache@v4
with:
path: ~/.m2/repository
key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}if: github.ref == 'refs/heads/main'if [[ "$current_version" != *"-SNAPSHOT" ]]; then
echo "Version must be SNAPSHOT"
exit 1
fi| Technology | Purpose |
|---|---|
| GitHub Actions | CI/CD Automation |
| Maven | Build & Release |
| Java | Application Runtime |
| GPG | Artifact Signing |
| Sonatype Nexus | Artifact Hosting |
| Maven Central | Artifact Distribution |
| Git | Source Control |
| Git Tags | Release Tracking |
This project is ideal for:
- CI/CD learning
- DevOps demonstrations
- Platform engineering training
- Maven Central tutorials
- Enterprise release simulations
- Java release engineering
- GitHub Actions demonstrations
- Internal developer platforms
This project simulates a complete enterprise-grade CI/CD release pipeline that demonstrates how modern software organizations automate Java project releases and Maven Central publishing using GitHub Actions, Maven, Git, GPG, and Sonatype.