Jenkins 管道抛出 ProxyException "expected to call Device.<init> but wound up catching Device.getIP"

Question

我像这样在 Jenkins 管道中创建了一个类。

class Device
{
    def ip = null
    def context
    
    def getIP(devName) 
    {
        return "aaa.bbb.ccc.ddd"
    }

    Device(context, devName, devType)
    {
        print("[DEBUG] ctor device")
        ip = getIP(devName)
        this.context = context
        print(ip)
    }
}


ap = new Device(this, "DEV", "TYPE")
print ap.ip

当我在“Groovy Web 控制台”( https://groovyconsole.appspot.com/ )中尝试时，它运行良好
但是当我在 Jenkins 中运行这个脚本时，出现以下错误。

[Pipeline] Start of Pipeline

expected to call Device.<init> but wound up catching Device.getIP; see: https://jenkins.io/redirect/pipeline-cps-method-mismatches/

[Pipeline] End of Pipeline

hudson.remoting.ProxyException: CpsCallableInvocation{methodName=getIP, call=com.cloudbees.groovy.cps.impl.CpsFunction@20fd33e6, receiver=Device@57905ade, arguments=[DEV]}

Finished: FAILURE

脚本有什么问题？

Answer 1

底层 Jenkins 管道引擎将您的 Groovy 代码转换为 groovy-cps兼容的。它有几个限制，其中之一是从非 CPS 转换的方法(构造函数方法)调用 CPS 转换的方法(在您的情况下为 getIP)。
这是documentation page描述了这个限制。

Constructors

Occasionally, users may attempt to use CPS-transformed code such as Pipeline steps inside of a constructor in a Pipeline script. Unfortunately, the construction of objects via the new operator in Groovy is not something that can be CPS-transformed (JENKINS-26313), and so this will not work.

您可以删除对 getIP 的调用。方法来自构造函数，或者您可以注释 getIP方法与 @NonCPS注解。