Auto-increment release version Jenkins

Question

I have an application that builds in Jenkins and that I want to deploy to Octopus. When I am doing this I have to create a release version that is send to Octopus. For this rele

Answer 1

If you are doing deployments from a git repo, you are probably already creating tags for each release (or you should at least, so that you can more easily track what was deployed). If that's the case, you can just derive the next release version from those tags, without having to store the version anywhere else (just make sure Jenkins is fetching tags in advanced clone behaviours).

Then, you can calculate the next version with something like this:

def nextVersionFromGit(scope) {
    def latestVersion = sh returnStdout: true, script: 'git describe --tags "$(git rev-list --tags=*.*.* --max-count=1 2> /dev/null)" 2> /dev/null || echo 0.0.0'
    def (major, minor, patch) = latestVersion.tokenize('.').collect { it.toInteger() }
    def nextVersion
    switch (scope) {
        case 'major':
            nextVersion = "${major + 1}.0.0"
            break
        case 'minor':
            nextVersion = "${major}.${minor + 1}.0"
            break
        case 'patch':
            nextVersion = "${major}.${minor}.${patch + 1}"
            break
    }
    nextVersion
}

This method uses Semantic Versioning format, but it can be easily adapted if you want versions with only 2 numbers.