如何在Jenkins管道中创建条件String变量

Question

我是Jenkins Pipeline语法的新手，因此需要一些帮助。我正在尝试运行ansible剧本，在其中我想根据用户选择的复选框运行一些任务。我定义了布尔参数来捕获用户可以选择的内容。

parameters { booleanParam(name: 'Clean_Up_And_Reboot', defaultValue: false, description: 'This will clean up all the HDP softwares and reboot the machines ') }
parameters { booleanParam(name: 'Yum_And_Java', defaultValue: true, description: 'Update Yum Repos and install Java if missing' ) }
parameters { booleanParam(name: 'Nginx', defaultValue: false, description: 'Install Nginx' ) }
parameters { booleanParam(name: 'Ambari_agents', defaultValue: false, description: 'Install ambari-agents on Hosts' ) }
parameters { booleanParam(name: 'Ambari_Server', defaultValue: false, description: 'Install ambari-server and update clusters' ) }

environment{
    tags =""
}
stages {
    stage('Deploy to Pre Pilot') {
        when {
            expression { return params.DEPLOY_TO_DEV }
        }
        steps {

                runAnsiblePlaybook('playbook.yml', environment = 'dev')
            }
        }

如何在此处声明变量，以执行以下操作

if(param.Clean_Up_And_Reboot){
tags=  "Clean_Up_And_Reboot"
}
if(param.Yum_And_Java){
tags+ =  "Yum_And_Java"
}

，然后将此标签变量传递给步骤

steps {

                runAnsiblePlaybook('playbook.yml', environment = 'dev', tags={param.tags})
            }