How to retrieve build_id of latest successful build in Jenkins?

Question

Generally, to get the artifact of the latest successful build, I do a wget on the below URL:

http://jenkins.com/job/job_name/lastSuccessfulBuild/artifact/artifact1/jenkins.txt

Is there a way, I can do a wget on lastSuccessfulBuild and get a build_id like below?

build_id=`wget http://jenkins.p2pcredit.local/job/job_name/lastSuccessfulBuild`

Answer 1

Yes, there is a way and it is pretty straightforward:

$ build_id=`wget -qO- jenkins_url/job/job_name/lastSuccessfulBuild/buildNumber`
$ echo $build_id
131 # that's my build number

Answer 2

I think the best solution is using groovy with zero dependencies.

node {
    script{
        def lastSuccessfulBuildID = 0
        def build = currentBuild.previousBuild
        while (build != null) {
            if (build.result == "SUCCESS")
            {
                lastSuccessfulBuildID = build.id as Integer
                break
            }
            build = build.previousBuild
        }
        println lastSuccessfulBuildID
    }
}

You do not need specify jenkins_url or job_name etc to get last successful build id. Then you could use it easily in all Jenkinsfile in repositories without useless configurations.

Tested on Jenkins v2.164.2