JenkinsScriptedPipelineCleanupLockableResources.groovy

/**
 * Clean all non-locked lockable resources from Jenkins config.
 *
 * Rationale: When using lock function in pipeline with a dynamic string that will have many values 
 * over time, the Jenkins global configure page is filled with lockable resources.
 *
 *   @param mailTo String - Comma separated list of email addresses to mail upon error
 */
def cleanLockableResources(String mailTo) {
  try {
      def res = GlobalConfiguration.all().get(org.jenkins.plugins.lockableresources.LockableResourcesManager.class).resources
      def unlocked = res.findAll { it -> !it.locked }
      println "Will remove ${unlocked.size()} lockable resources"
      res.retainAll {it -> it.locked}
  } catch (Throwable e) {
      echo '==== Error mgmt: Do notifications ================'
      try {
          mail to: mailTo,
               subject: "Build ${env.BUILD_DISPLAY_NAME} of ${env.JOB_NAME} failed", 
               body: "Build ${env.BUILD_DISPLAY_NAME} of ${env.JOB_NAME} failed\nBuild: ${env.BUILD_URL}"
      } catch (Throwable err) {
          echo 'ERROR: mail failure: ' + err.getMessage()
      }
      throw e
  }
}