Question

我在Jenkinsfile中运行以下groovy脚本，该脚本在构建期间执行：

import java.util.stream.Collectors
import java.util.stream.Stream
import groovy.transform.Field

@Field
Map<String, String> sampleMap = [
        'SampleKey1': 'SampleValue1',
        'SampleKey2': 'SampleValue2'
]

//example param value: "C/SampleKey1/someFile, C/SampleKey2/someFile2"
private Collection<String> getValues(String param) {
    Stream.of(param.split(','))
            .map { getValueFromOnePath(it) }
            .filter { !it.isEmpty() }
            .distinct()
            .collect(Collectors.toList())
}

private String getValueFromOnePath(String path) {
    String[] pathParts = path.split('/')
    if (pathParts.size() < 2) {
        return ''
    }
    return sampleMap[pathParts[1]] ?: ''
}

上述参数值代码的预期结果等于：

"C/SampleKey1/someFile, C/SampleKey2/someFile2"

是：

[SampleValue1, SampleValue2]

然而，当这个代码在Jenkins上执行时，我收到一个奇怪的错误，我无法理解（为什么会发生）：

hudson.remoting.ProxyException：org.codehaus.groovy.runtime.typehandling.GroovyCastException：无法转换对象＆＃39; SampleValue1＆＃39;与class＆＃39; java.lang.String＆＃39; to class＆＃39; java.util.Collection＆＃39; at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnSAM（DefaultTypeTransformation.java:405） at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnNumber（DefaultTypeTransformation.java:319） at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnCollection（DefaultTypeTransformation.java:267） at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType（DefaultTypeTransformation.java:219） at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.castToType（ScriptBytecodeAdapter.java:603） at Unknown.Unknown（未知）在 cps.transform （原生方法）在com.cloudbees.groovy.cps.impl.LocalVariableBlock $ LocalVariable.set（LocalVariableBlock.java:45）在com.cloudbees.groovy.cps.impl.AssignmentBlock $ ContinuationImpl.assignAndDone（AssignmentBlock.java:70） at sun.reflect.GeneratedMethodAccessor303.invoke（未知来源） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） at java.lang.reflect.Method.invoke（Method.java:498）在com.cloudbees.groovy.cps.impl.ContinuationPtr $ ContinuationImpl.receive（ContinuationPtr.java:72）在com.cloudbees.groovy.cps.impl.LocalVariableBlock $ LocalVariable.get（LocalVariableBlock.java:39）在com.cloudbees.groovy.cps.LValueBlock $ GetAdapter.receive（LValueBlock.java:30）在com.cloudbees.groovy.cps.impl.LocalVariableBlock.evalLValue（LocalVariableBlock.java:28）在com.cloudbees.groovy.cps.LValueBlock $ BlockImpl.eval（LValueBlock.java:55）在com.cloudbees.groovy.cps.LValueBlock.eval（LValueBlock.java:16）在com.cloudbees.groovy.cps.Next.step（Next.java:83）在com.cloudbees.groovy.cps.Continuable $ 1.call（Continuable.java:174）在com.cloudbees.groovy.cps.Continuable $ 1.call（Continuable.java:163）在org.codehaus.groovy.runtime.GroovyCategorySupport $ ThreadCategoryInfo.use（GroovyCategorySupport.java:122）在org.codehaus.groovy.runtime.GroovyCategorySupport.use（GroovyCategorySupport.java:261）在com.cloudbees.groovy.cps.Continuable.run0（Continuable.java:163）在org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access $ 001（SandboxContinuable.java:19）在org.jenkinsci.plugins.workflow.cps.SandboxContinuable $ 1.call（SandboxContinuable.java:35）在org.jenkinsci.plugins.workflow.cps.SandboxContinuable $ 1.call（SandboxContinuable.java:32）在org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox（GroovySandbox.java:108）在org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0（SandboxContinuable.java:32）在org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk（CpsThread.java:174）在org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run（CpsThreadGroup.java:331） at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access $ 100（CpsThreadGroup.java:82）在org.jenkinsci.plugins.workflow.cps.CpsThreadGroup $ 2.call（CpsThreadGroup.java:243）在org.jenkinsci.plugins.workflow.cps.CpsThreadGroup $ 2.call（CpsThreadGroup.java:231）在org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService $ 2.call（CpsVmExecutorService.java:64） at java.util.concurrent.FutureTask.run（FutureTask.java:266）在hudson.remoting.SingleLaneExecutorService $ 1.run（SingleLaneExecutorService.java:112）在jenkins.util.ContextResettingExecutorService $ 1.run（ContextResettingExecutorService.java:28） at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:511） at java.util.concurrent.FutureTask.run（FutureTask.java:266）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149） at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）在java.lang.Thread.run（Thread.java:748）

有什么想法吗？

Answer 1

您可以尝试使用@NonCPS注释对getValues进行注释。还要避免在要在Jenkins沙箱中执行的代码内部使用Streams，这通常是导致错误的原因。希望对您有所帮助。

Groovy和StreamAPI

1 个答案: