Collection of useful methods for Jenkins to be used in init.groovy.d

init.groovy

import jenkins.model.Jenkins

class InitGroovyD {
    /**
     * Install plugins.
     *
     * @param plugins Plugins to be installed
     */
    static installPlugins(String... plugins) {
        def updateCenter = Jenkins.instance.updateCenter
        updateCenter.updateAllSites()
        def pluginsNotInstalled = { !Jenkins.instance.manager.getPlugin(it) }
        def installed = false
        plugins.findAll { pluginsNotInstalled }.each {
            def plugin = updateCenter.getPlugin(it)
            if (plugin) {
                plugin.deploy()
                installed = true
            }
        }
        if (installed) {
            Jenkins.instance.with {
                save()
                doSafeRestart()
            }
        }
    }
}

InitGroovyD.installPlugins('git')