* detector result IF there are also any other returned via discovered services.
 */
public class GenericCIDetector implements CIDetector {
    public static final String NAME = "Generic";

    private static final String CI = "CI";

    @Override
    public Optional<CIInfo> detectCI() {
        String ciEnv = System.getenv(CI);

import org.apache.maven.api.cli.cisupport.CIInfo;

/**
 * CI detector helper: it uses service discovery to discover {@link CIDetector}s. If resulting list has more than
 * one element, it will remove the {@link GenericCIDetector} result, assuming a more specific one is also present.
 */
public final class CIDetectorHelper {
    private CIDetectorHelper() {}

    public static List<CIInfo> detectCI() {

import org.apache.maven.api.cli.cisupport.CIInfo;

/**
 * Service interface to detect CI system process runs on, if any.
 *
 * @since 4.0.0
 */
public interface CIDetector {
    /**
     * Returns non-empty optional with CI information, if CI is detected, empty otherwise.
     */
    Optional<CIInfo> detectCI();

    public static final String NAME = "GitHub";

    private static final String GITHUB_ACTIONS = "GITHUB_ACTIONS";
    private static final String RUNNER_DEBUG = "RUNNER_DEBUG";

    @Override
    public Optional<CIInfo> detectCI() {
        String ciEnv = System.getenv(GITHUB_ACTIONS);
        if ("true".equals(ciEnv)) {
            return Optional.of(new CIInfo() {
                @Override
                public String name() {

    public static final String NAME = "Travis";

    private static final String TRAVIS = "TRAVIS";
    private static final String TRAVIS_DEBUG_MODE = "TRAVIS_DEBUG_MODE";

    @Override
    public Optional<CIInfo> detectCI() {
        String ciEnv = System.getenv(TRAVIS);
        if ("true".equals(ciEnv)) {
            return Optional.of(new CIInfo() {
                @Override
                public String name() {

public class TeamcityCIDetector implements CIDetector {
    public static final String NAME = "TeamCity";

    private static final String TEAMCITY_VERSION = "TEAMCITY_VERSION";

    @Override
    public Optional<CIInfo> detectCI() {
        String ciEnv = System.getenv(TEAMCITY_VERSION);
        if (ciEnv != null && !ciEnv.trim().isEmpty()) {
            return Optional.of(new CIInfo() {
                @Override

import org.apache.maven.api.cli.cisupport.CIInfo;

public class CIDetectorHelperRunner {
    public static void main(String[] args) {
        List<CIInfo> detect = CIDetectorHelper.detectCI();
        if (detect.isEmpty()) {
            System.out.print("NONE;");
        } else {
            detect.forEach(d -> System.out.print(d.name() + (d.isVerbose() ? "+VERBOSE" : "") + ";"));
        }
    }

 */
public class CircleCIDetector implements CIDetector {
    public static final String NAME = "CircleCI";

    private static final String CIRCLECI = "CIRCLECI";

    @Override
    public Optional<CIInfo> detectCI() {
        String ciEnv = System.getenv(CIRCLECI);
        if ("true".equals(ciEnv)) {
            return Optional.of(new CIInfo() {
                @Override
                public String name() {

 */
public class JenkinsCIDetector implements CIDetector {
    public static final String NAME = "Jenkins";

    private static final String WORKSPACE = "WORKSPACE";

    @Override
    public Optional<CIInfo> detectCI() {
        String workspace = System.getenv(WORKSPACE);
        if (workspace != null && !workspace.trim().isEmpty()) {
            return Optional.of(new CIInfo() {
                @Override

    }

    @Nullable
    protected CIInfo detectCI(LocalContext context) {
        List<CIInfo> detected = CIDetectorHelper.detectCI();
        if (detected.isEmpty()) {
            return null;
        } else if (detected.size() > 1) {
            // warn
            context.parserRequest
                    .logger()
                    .warn("Multiple CI systems detected: "