scm:
      - git:
          name: origin
          # master node jenkins user ~/.ssh
          credentials-id: f6c7695a-671e-4f4f-a331-acdce44ff9ba
          reference-repo: "/var/lib/jenkins/.git-references/elasticsearch.git"
          branches:
            - "${branch_specifier}"
          url: "https://github.com/elastic/elasticsearch.git"

 */
package org.apache.maven.cling.invoker.cisupport;

import java.util.Optional;

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

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

    private static final String WORKSPACE = "WORKSPACE";

    @Override
    public Optional<CIInfo> detectCI() {

[![Jenkins Status](https://img.shields.io/jenkins/s/https/ci-maven.apache.org/job/Maven/job/maven-box/job/maven/job/master.svg?)][build]
[![Jenkins tests](https://img.shields.io/jenkins/t/https/ci-maven.apache.org/job/Maven/job/maven-box/job/maven/job/master.svg?)][test-results]

# This file is used with all of the non-matrix tests in Jenkins.

# This .properties file defines the versions of Java with which to
# build and test Elasticsearch for this branch. Valid Java versions
# are 'java' or 'openjdk' followed by the major release number.

ES_BUILD_JAVA=openjdk16

/_tmp/
/doc_tmp/

# Test artifacts produced by Prow/kubetest2 jobs
/_artifacts/
/_rundir/

# Go dependencies installed on Jenkins
/_gopath/

# Config directories created by gcloud and gsutil on Jenkins
/.config/gcloud*/
/.gsutil/

# CoreOS stuff
/cluster/libvirt-coreos/coreos_*.img

# Downloaded Kubernetes binary release
/kubernetes/

# This file is used with all of the non-matrix tests in Jenkins.

# This .properties file defines the versions of Java with which to
# build and test Elasticsearch for this branch. Valid Java versions
# are 'java' or 'openjdk' followed by the major release number.

ES_BUILD_JAVA=jdk16

 * By default this method does NOT execute ITs anymore, just "install".
 *
 * mavenBuild("<jdk>", "<profiles> <goals> <plugins> <properties>"
 *
 * @param jdk the jdk tool name (in jenkins) to use for this build
 * @param extraArgs extra command line args
 */
def mavenBuild(jdk, extraArgs) {
  script {
    try {
      withEnv(["JAVA_HOME=${tool "$jdk"}",

CI configuration for Elasticsearch
==================================

Layout and Syntax
-----------------

CI is run by Jenkins at [elasticsearch-ci](https://elasticsearch-ci.elastic.co/).
Jobs live in the [jobs.t](jobs.t) directory, these are defined in YML using a syntax 
simmilar to [JJB](https://elasticsearch-ci.elastic.co/view/Elasticsearch%20master/).
Macros are not allowed, and each job must be defined in its own file.

/**
 * CI support: this class contains gathered information and more from CI that Maven process runs on.
 *
 * @since 4.0.0
 */
public interface CIInfo {
    /**
     * Short distinct name of CI system: "GH", "Jenkins", etc.
     */
    @Nonnull
    String name();

    /**
     * May return a message that will be logged by Maven explaining why it was detected (and possibly more).
     */
    @Nonnull

    }

    @Test
    void generic() throws Exception {
        assertEquals(GenericCIDetector.NAME + ";", runner(Map.of("CI", "true")));
    }

    @Test
    void jenkins() throws Exception {
        assertEquals(JenkinsCIDetector.NAME + ";", runner(Map.of("CI", "true", "WORKSPACE", "foobar")));
    }

    @Test
    void circleci() throws Exception {