CI/CD Pipeline in Jenkins: Staging & Production Artifact Flow in java app

1) CI/CD pipeline generate staging artifacts jar and convert to trusted jar using promotes jenkins jobs

To implement a CI/CD pipeline in Jenkins that generates staging artifacts (JARs) for testing and promotes them to production-certified artifacts upon approval, follow this approach for java project:

Pipeline Overview

Build Stage:

Compile the application and generate a JAR file.
Publish the JAR file to a staging repository in Nexus.

Testing Stage:

Run automated tests (unit, integration, etc.).
Validate the artifact quality.

Approval Stage:

Wait for manual or automated approval to promote the JAR.

Promotion Stage:

Copy the approved artifact from the staging repository to the production repository in Nexus.

Jenkinsfile

groovy

pipeline {

agent any

tools {

maven 'Maven_3.8.6' // Specify your Maven version

jdk 'JDK_11' // Specify your JDK version

}

environment {

NEXUS_URL = 'http://nexus.example.com'

STAGING_REPO = 'staging-repository'

PROD_REPO = 'production-repository'

ARTIFACT_ID = 'your-artifact'

GROUP_ID = 'com.kcm'

}

stages {

stage('Build') {

steps {

sh 'mvn clean package'

}

stage('Publish to Staging') {

steps {

script {

def pom = readMavenPom file: 'pom.xml'

def artifactPath = "target/${pom.artifactId}-${pom.version}.jar"

nexusArtifactUploader(

nexusVersion: 'nexus3',

protocol: 'http',

nexusUrl: "$NEXUS_URL",

repository: "$STAGING_REPO",

groupId: pom.groupId,

artifactId: pom.artifactId,

version: pom.version,

packaging: 'jar',

file: artifactPath

)

echo "Artifact published to staging repository: $artifactPath"

}

stage('Testing') {

steps {

sh 'mvn test'

}

stage('Approval') {

steps {

input message: 'Do you approve for production?', ok: 'Promote'

}

stage('Promote to Production') {

steps {

script {

def pom = readMavenPom file: 'pom.xml'

nexusArtifactUploader(

nexusVersion: 'nexus3',

protocol: 'http',

nexusUrl: "$NEXUS_URL",

repository: "$PROD_REPO",

groupId: pom.groupId,

artifactId: pom.artifactId,

version: pom.version,

packaging: 'jar',

file: "target/${pom.artifactId}-${pom.version}.jar"

)

echo "Artifact promoted to production repository."

}

post {

success {

echo 'Pipeline executed proper successfully.'

}

failure {

echo 'Pipeline encountered an error. Please review the logs for more information.'

}

Key Features

Dynamic Artifact Management:

The pipeline reads the artifact ID, group ID, and version dynamically from pom.xml.

Staging and Production Repositories:

Artifacts are first uploaded to a staging repository in Nexus.
Once approved, the artifact will be moved to the production repository.

Manual Approval:

The input step requires a manual confirmation to proceed with promotion.

Automated Testing:

Ensures only artifacts that pass testing are eligible for production.

Artifact Promotion:

Reuses the artifact built in the staging phase, ensuring consistency.

Nexus Configuration

Create two repositories in Nexus:

Staging Repository (e.g., staging-repository).
Production Repository (e.g., production-repository).

Ensure Jenkins has permissions to upload and download artifacts from these repositories.

Customizing the Pipeline

Automated Promotion:

Replace the manual approval step with criteria-based promotion (e.g., test results, SonarQube quality gates).

groovy

stage('Promote to Production') {

when {

expression { currentBuild.result == 'SUCCESS' }

}

steps {

// Promotion process logic

}

Multi-Environment Deployment:

Add stages for deploying the artifact to staging and production environments.

This pipeline ensures a controlled flow for staging and promoting artifacts, aligning with best practices for software delivery. Let me know if you'd like to add deployment steps or integrate additional tools!

2) CI/CD pipeline integrate custom validation tool

To integrate a custom validation tool (validation-tool.jar) into your Jenkins pipeline with a repository setup, you need to ensure the following:

Repository Setup: Store your validation-tool.jar in a repository or have it available in your project directory. You can either:

Store it in a Git repository.
Download it from a Nexus Repository or another artifact repository.

Jenkinsfile Integration: Use the Jenkins pipeline to:

Check out the source code from the Git repository.
Run the validation tool on the built JAR file.
Perform artifact promotion only after the validation passes.

Step 1: Store validation-tool.jar in Git Repository

For simplicity, let's assume that the validation-tool.jar is stored in a Git repository (e.g., your-validation-tool-repo) that Jenkins can access. You can have a directory structure like this:

bash

your-repo/

│

├── Jenkinsfile

└── target/

├── your-kartik-artifact-1.0.0.jar

└── validation-tool-repo/

└── validation-tool.jar

Step 2: Jenkinsfile Example with Validation Tool Integration

In this example, the Jenkins pipeline does the following:

Checks out the main repository with the JAR to be validated.
Clones or fetches the validation-tool.jar from a separate repository (e.g., validation-tool-repo).
Runs the validation tool on the JAR file.
Promotes the artifact if validation is successful.

Here’s a sample Jenkinsfile to accomplish this:

groovy

pipeline {

agent any

environment {

NEXUS_URL = 'http://nexus.kcm.com'

STAGING_REPO = 'staging-repository'

PROD_REPO = 'production-repository'

GROUP_ID = 'com.kcm'

ARTIFACT_ID = 'your-artifact'

ARTIFACT_PATH = "target/your-artifact-1.0.0.jar"

}

stages {

stage('Checkout Main Repository') {

steps {

checkout scm

echo 'Checked out main repository with JAR to be validated.'

}

stage('Checkout Validation Tool') {

steps {

// Clone the validation tool repository using the Git URL: 'https://github.com/javatherapy/validation-tool-repo.git', branch: 'main'.

echo 'Checked out validation tool repository.'

}

stage('Run Validation') {

steps {

script {

// Define the location of the validation tool

def validationToolPath = "validation-tool-repo/validation-tool.jar"

// Run the validation tool on the JAR in the target folder

def artifactFile = "${ARTIFACT_PATH}"

sh "java -jar ${validationToolPath} --file ${artifactFile}"

echo "JAR file ${artifactFile} validation completed successfully."

}

stage('Promote Artifact to Production') {

steps {

script {

def pom = readMavenPom file: 'pom.xml'

def artifactVersion = pom.version

def artifactFile = "${ARTIFACT_ID}-${artifactVersion}.jar"

// Upload the artifact to the Nexus or jfrog production repository.

nexusArtifactUploader(

nexusVersion: 'nexus3',

protocol: 'http',

nexusUrl: "$NEXUS_URL",

repository: "$PROD_REPO",

groupId: "$GROUP_ID",

artifactId: "$ARTIFACT_ID",

version: artifactVersion,

packaging: 'jar',

file: artifactFile

)

echo "Artifact promoted to production repository."

}

post {

success {

echo 'Artifact successfully validated and promoted to production.'

}

failure {

echo 'Validation or promotion failed.'

}

Explanation of Key Steps

Checkout Main Repository:

The pipeline checks out the main repository where the artifact (JAR) is located.
The target/your-artifact-1.0.0.jar is assumed to be built as part of earlier pipeline stages.

Checkout Validation Tool Repository:

The pipeline clones or fetches the validation-tool.jar from a separate Git repository (you can change the repository URL as per your setup).

Run Validation:

The java -jar validation-tool.jar --file <artifact-path> command runs the validation tool on the JAR file (your-artifact-1.0.0.jar).
This stage ensures that the artifact passes validation before it can be promoted to production.

Promote Artifact to Production:

After successful validation, the artifact is uploaded to the Nexus production repository using nexusArtifactUploader.

Step 3: Validation Tool Code (stored in separate Git repo)

As mentioned earlier, the validation-tool.jar in the validation-tool-repo could look like this:

java

import java.io.File;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.io.FileInputStream;

import java.io.IOException;

public class ValidationTool {

public static void main(String[] args) {

if (args.length != 2 || !args[0].equals("--file")) {

System.out.println("Usage: java -jar validation-tool.jar --file <path-to-jar>");

System.exit(1);

}

String selectedJarFilePath = args[1];

File jarFile = new File(selectedJarFilePath);

if (!jarFile.exists()) {

System.out.println("Error: File does not exist - " + filePath);

System.exit(2);

}

System.out.println("Validating JAR file: " + filePath);

try {

validateJarFile(jarFile);

} catch (Exception e) {

System.out.println("Veracode Validation error and failed: " + e.getMessage());

System.exit(3);

}

System.out.println("JAR file veracode validation successful.");

System.exit(0);

}

private static void validateJarFile(File jarFile) throws IOException, NoSuchAlgorithmException {

MessageDigest digest = MessageDigest.getInstance("SHA-256");

try (FileInputStream fiss = new FileInputStream(jarFile)) {

byte[] byteArrays = new byte[1024];

int bytesReads;

while ((bytesReads = fiss.read(byteArray)) != -1) {

digest.update(byteArrays, 0, bytesReads);

}

byte[] hashBytes = digest.digest();

StringBuilder hexsString = new StringBuilder();

for (byte b : hashBytes) {

hexsString.append(String.format("%02x", b));

}

System.out.println("SHA-256 checksum value: " + hexsString.toString());

}

Step 4: Jenkins Configuration

Git Repositories:

Ensure Jenkins has access to both repositories (main repository and validation-tool-repo).
Use Git credentials in Jenkins for secure repository access.

Nexus Integration:

Make sure that Nexus credentials are set up in Jenkins using the Jenkins credentials plugin.

Summary

This pipeline integrates a validation tool (stored in a separate repository) to validate a JAR file before promoting it to the production repository.
It performs the following:

Checks out the main repo.
Fetches the validation-tool.jar.
Runs validation checks on the JAR.
If the validation is successful, the artifact will be promoted to production.

This setup allows for more flexibility, such as introducing additional validation steps or using a different method for artifact signing.

Let me know if you need further adjustments!

3) CI/CD pipeline integrate for all maven projects with Jenkinsfile

To create a single Jenkinsfile that handles the CI/CD pipeline for all Maven projects in your repository, you need to structure the pipeline in a way that it can dynamically handle multiple Maven projects with different configurations. Here’s a basic structure for a Jenkins pipeline that can handle multiple Maven projects:

Basic Structure for a Multi-Project Jenkins Pipeline

The pipeline will:

Checkout the code from Git.
Build multiple Maven projects.
Run unit tests for each project.
Run SonarQube analysis on each project.
Deploy to a staging environment (e.g., Nexus).
Optionally, promote the artifact to production.

Sample Jenkinsfile for Multiple Maven Projects

groovy

pipeline {

agent any

environment {

MAVEN_HOME = tool name: 'M3', type: 'ToolLocation' // Define Maven tool path

NEXUS_URL = 'http://nexus.kcm.com'

STAGING_REPO = 'staging-repository'

PROD_REPO = 'production-repository'

GROUP_ID = 'com.kcm'

}

stages {

stage('Checkout-Project') {

steps {

// Checkout all the projects in your repo (if they are in subdirectories)

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

checkout scm

}

stage('Build-Compile and Test Projects') {

parallel {

stage('Build Project 1') {

steps {

script {

dir('projectP') {

sh "'${MAVEN_HOME}/bin/mvn' clean install"

}

stage('Build Project 2') {

steps {

script {

dir('projectQ') {

sh "'${MAVEN_HOME}/bin/mvn' clean install"

}

stage('Build Project 3') {

steps {

script {

dir('projectR') {

sh "'${MAVEN_HOME}/bin/mvn' clean install"

}

stage('SonarQube Project Analysis') {

parallel {

stage('Project 1 SonarQube') {

steps {

script {

dir('projectP') {

sh "'${MAVEN_HOME}/bin/mvn' sonar:sonar -Dsonar.projectKey=project1"

}

stage('Project 2 SonarQube') {

steps {

script {

dir('projectQ') {

sh "'${MAVEN_HOME}/bin/mvn' sonar:sonar -Dsonar.projectKey=project2"

}

stage('Project 3 SonarQube') {

steps {

script {

dir('projectR') {

sh "'${MAVEN_HOME}/bin/mvn' sonar:sonar -Dsonar.projectKey=project3"

}

stage('Deploy Project to Staging') {

parallel {

stage('Deploy Project 1') {

steps {

script {

dir('projectP') {

sh "'${MAVEN_HOME}/bin/mvn' deploy -DaltDeploymentRepository=nexus::default::${NEXUS_URL}/repository/${STAGING_REPO}"

}

stage('Deploy Project 2') {

steps {

script {

dir('projectQ') {

sh "'${MAVEN_HOME}/bin/mvn' deploy -DaltDeploymentRepository=nexus::default::${NEXUS_URL}/repository/${STAGING_REPO}"

}

stage('Deploy Project 3') {

steps {

script {

dir('projectR') {

sh "'${MAVEN_HOME}/bin/mvn' deploy -DaltDeploymentRepository=nexus::default::${NEXUS_URL}/repository/${STAGING_REPO}"

}

stage('Promote Project to Production') {

steps {

script {

// Example of promoting artifacts to production

def artifacts = ["projectP", "projectQ", "projectR"]

for (artifact in artifacts) {

dir(artifact) {

sh "'${MAVEN_HOME}/bin/mvn' deploy -DaltDeploymentRepository=nexus::default::${NEXUS_URL}/repository/${PROD_REPO}"

}

post {

success {

echo 'All Maven projects built, tested, and deployed successfully.'

}

failure {

echo 'One or more stages failed.'

}

Explanation of Key Stages in the Jenkinsfile

Checkout:

This stage checks out all the Maven projects stored in different directories within the repository. You can add more projects as needed.

Build and Test Projects:

This stage runs the mvn clean install command for each project in parallel.
Each project will be built and tested independently.

SonarQube Analysis:

After the build, the pipeline runs a SonarQube analysis on each project.
This helps ensure that the code quality and standards are being met.

Deploy to Staging:

This stage deploys the artifacts to a Nexus staging repository for further testing and validation.
It uses the mvn deploy command and uploads each artifact to Nexus.

Promote to Production:

After successfully deploying to the staging environment, the artifacts are promoted to the production repository in Nexus.
This could involve copying the artifacts from staging to the production repository or simply re-deploying the same artifacts to the production repository.

Key Environment Variables

MAVEN_HOME: The location of your Maven tool in Jenkins.
NEXUS_URL: The URL of your Nexus instance where the artifacts will be deployed.
STAGING_REPO: The repository name for staging.
PROD_REPO: The repository name for production.
GROUP_ID: The Maven Group ID used in your projects.

Multi-Project Handling

This pipeline assumes:

You have multiple Maven projects (e.g., project1, project2, project3) inside the same Git repository.
Each project can be handled separately using different stages that are executed in parallel for efficiency.

You can modify the list of projects and adjust the Maven goals (clean install, deploy, etc.) according to your needs.

Additional Customizations

Artifact Promotion: You can enhance the promotion logic by adding conditions for verifying whether the staging version is "certified" (e.g., based on test results, quality checks, etc.).
Environment-Specific Deployments: You could add stages for deploying to different environments (Dev, Test, Prod).
Docker or Kubernetes Integration: You could integrate Docker/Kubernetes deployment stages if required.

This pipeline structure is highly extensible and should be able to accommodate any number of Maven projects within your CI/CD pipeline.

4) CI/CD pipeline integrate for all maven projects with Jenkinsfile more deeper

Here’s a comprehensive Jenkinsfile for handling multi-project Maven builds with the following functionalities:

Staging to Production Promotion: Artifacts are deployed to a staging repository first and promoted to a trusted production repository after passing validation.
SonarQube Setup: Perform static code analysis for code quality.
Black Duck Scan: Integrate a security scan for open-source vulnerabilities.
Veracode Scan: Perform security testing for code vulnerabilities.
Validation of Trusted Files: Ensure the artifact meets defined quality and security standards before production deployment.
Groovy Script: Use dynamic configurations for pipeline handling.

Directory Structure

Assume the repository structure is:

plaintext

multi-project-repo/

├── project1/

│ └── pom.xml

├── project2/

│ └── pom.xml

├── project3/

│ └── pom.xml

└── Jenkinsfile

Jenkinsfile

This file dynamically handles multiple Maven projects and integrates all required tools.

groovy

pipeline {

agent any

environment {

MAVEN_HOME = tool name: 'Maven 3', type: 'ToolLocation'

SONARQUBE_URL = 'http://sonarqube.kcm.com'

BLACKDUCK_URL = 'http://blackduck.kcm.com'

VERACODE_API_ID = 'your-veracode-api-id'

VERACODE_API_KEY = 'your-veracode-api-key'

NEXUS_URL = 'http://nexus.kcm.com'

STAGING_REPO = 'staging-repository'

PROD_REPO = 'production-repository'

GROUP_ID = 'com.kcm'

}

stages {

stage('Checkout Git Projects') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir("${projt}") {

checkout scm

echo "Checked out ${projt}."

}

stage('Build Compile and Test') {

parallel {

script {

def projects = ["projectP", "projectQ", "projectR"]

projects.each { projt ->

stage("Build ${projt}") {

dir(project) {

steps {

sh "'${MAVEN_HOME}/bin/mvn' clean install"

}

stage('SonarQube Project Analysis') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

sh "'${MAVEN_HOME}/bin/mvn' sonar:sonar -Dsonar.host.url=${SONARQUBE_URL}"

echo "SonarQube Project analysis complete for ${projt}."

}

stage('Black Duck Project Scan') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

sh "blackduck scan --url ${BLACKDUCK_URL} --project ${projt} --source ."

echo "Black Duck project scan complete for ${projt}."

}

stage('Veracode Project Security Scan') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

sh "veracode scan --api-id ${VERACODE_API_ID} --api-key ${VERACODE_API_KEY} --file target/*.jar"

echo "Veracode project scan complete for ${projt}."

}

stage('Deploy Project to Staging') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

sh "'${MAVEN_HOME}/bin/mvn' deploy -DaltDeploymentRepository=nexus::default::${NEXUS_URL}/repository/${STAGING_REPO}"

echo "Deployed ${projt} to staging repository."

}

stage('Validation of Trusted Files') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

sh "java -jar validation-tool.jar --file target/*.jar"

echo "Validation project of trusted file complete for ${projt}."

}

stage('Promote Project to Production') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

def pom = readMavenPom file: 'pom.xml'

def artifactVersion = pom.version

sh "'${MAVEN_HOME}/bin/mvn' deploy -DaltDeploymentRepository=nexus::default::${NEXUS_URL}/repository/${PROD_REPO}"

echo "Promoted ${projt}-${artifactVersion} to production repository."

}

post {

success {

echo 'All Maven projects successfully built, validated, and deployed to production.'

}

failure {

echo 'One or more stages failed. Please check the logs for details.'

}

Explanation of Key Features

Dynamic Project Handling:

The pipeline dynamically loops through all projects (project1, project2, etc.) and applies the same stages (build, test, deploy, etc.) for each project.

SonarQube Integration:

Analyzes code quality and sends reports to SonarQube.
Requires SonarQube setup in Jenkins (use the Sonar plugin).

Black Duck Scan:

Scans for open-source vulnerabilities in each project.
Requires the Black Duck plugin or CLI installed on the Jenkins agent.

Veracode Scan:

Performs a security scan for vulnerabilities.
Requires Veracode credentials (API ID/Key) and Veracode CLI.

Validation Tool:

Runs a validation-tool.jar to ensure the JAR file meets quality and security standards.

Artifact Promotion:

Stages artifacts to the Nexus staging repository.
Promotes validated artifacts to the Nexus production repository.

Prerequisites

Jenkins Configuration:

Install plugins for Maven, SonarQube, Black Duck, and Veracode.
Configure tools like Maven, Java, and SonarQube in Jenkins.

Validation Tool:

Ensure the validation-tool.jar is available in the workspace or accessible via a repository.

Nexus Configuration:

Configure a Nexus staging and production repository.

Security Tools:

Install and configure Black Duck and Veracode CLI tools on the Jenkins agents.

Benefits

Modular and Extensible: Easily add new projects or stages without changing the core structure.
Parallel Processing: Builds and scans are run in parallel for faster execution.
End-to-End Pipeline: Handles all stages from building, testing, and validating to staging and production deployment.

Let me know if you need additional help setting up this pipeline!

5) CI/CD pipeline integrate for all maven projects generate the signed jar using jarsigner

To enhance your validation-tool to check if a JAR file is signed and valid, you can incorporate functionality to verify its signature using the jarsigner or keytool commands. Below is a guide and example code to accomplish this.

Steps to Add Signature Verification

Use jarsigner for Verification:

jarsigner is a built-in Java tool that checks the validity of a JAR's digital signature.
It verifies that the JAR is signed and the signature is not tampered with.

Command to Verify a JAR:

bash

jarsigner -verify -verbose -certs my-jar-file.jar

-verify: Verifies the signature of the JAR.
-verbose: Provides detailed output about the verification.
-certs: Displays the certificate information.

Validation Steps in the Tool:

Run the jarsigner command programmatically.
Capture and analyze its output.
Ensure the JAR is signed and the certificate is valid.

Error Handling:

If the JAR is not signed, log an error and fail the validation.
If the signature is invalid, prevent the JAR from being promoted to production.

Java Code for Validation Tool

Here’s how you can implement this feature in a validation-tool written in Java:

java

import java.io.BufferedReader;

import java.io.InputStreamReader;

public class JarSignatureValidator {

public static void main(String[] args) {

if (args.length < 1) {

System.err.println("Usage: java JarSignatureValidator <path-to-jar>");

System.exit(1);

}

String jarFilePath = args[0];

boolean isValid = verifyJarSignature(jarFilePath);

if (isValid) {

System.out.println("JAR signature is valid and trusted.");

} else {

System.err.println("JAR signature verification failed.");

System.exit(1);

}

private static boolean verifyJarSignature(String jarFilePath) {

try {

// Command to verify the JAR signature

String command = "jarsigner -verify -verbose -certs " + jarFilePath;

// Execute the command

Process process = Runtime.getRuntime().exec(command);

BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));

String line;

boolean signed = false;

boolean valid = false;

while ((line = reader.readLine()) != null) {

System.out.println(line); // Log the command output for debugging

if (line.contains("jar verified.")) {

signed = true;

}

if (line.contains("valid")) {

valid = true;

}

process.waitFor();

// Check if the JAR is both signed and valid

return signed && valid;

} catch (Exception e) {

System.err.println("Error verifying JAR signature: " + e.getMessage());

e.printStackTrace();

return false;

}

Integrating with Your Jenkins Pipeline

In your Jenkinsfile, call the validation-tool.jar after building the JAR to verify its signature. Here's how:

groovy

stage('Validate Trusted JAR') {

steps {

script {

def projects = ["projectP", "projectQ", "projectR"]

for (projt in projects) {

dir(projt) {

sh "java -jar validation-tool.jar target/${projt}-${env.VERSION}.jar"

}

Output Analysis

If the JAR is signed and verified, the tool will print:

JAR signature is valid and trusted.

If the JAR is unsigned or invalid, the tool will fail with:

Copy code

JAR signature verification failed.

Additional Features

Ensure Timestamp Validity:

Use timestamp validation in jarsigner to confirm the signature was made while the certificate was valid.
Add -tsa (timestamp authority) during signing to ensure long-term validity.

Certificate Trust Check:

Use keytool to verify the certificate chain and ensure the signing certificate is trusted.
Example:

bash

JAR signature verification failed.

Enhanced Reporting:

Log detailed results of signature checks.
Include the certificate details in your validation tool’s output.

This approach ensures that only signed, trusted, and valid JAR files are promoted to the production repository, enhancing your CI/CD pipeline's security and reliability.