# Unexpected exception when use getContext and sh together in the latest version of Jenkins **URL:** \ **Category:** Ask a question\ **Created:** [November 17, 2021, 4:11pm UTC](https://community.jenkins.io/t/unexpected-exception-when-use-getcontext-and-sh-together-in-the-latest-version-of-jenkins/828 "2021-11-17T16:11:06Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![link89](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/link89/32/579_2.png) [@link89](https://community.jenkins.io/u/link89)\ **Post date:** [November 17, 2021, 4:11pm UTC](https://community.jenkins.io/t/unexpected-exception-when-use-getcontext-and-sh-together-in-the-latest-version-of-jenkins/828/1 "2021-11-17T16:11:06Z")
The following code use to work properly until I upgrade the Jenkins to [Jenkins 2.303.2](https://www.jenkins.io/). ```auto import org.jenkinsci.plugins.workflow.graph.FlowNode node() { stage('hello') { def flow = getContext(FlowNode.class) echo flow.id sh 'echo hello' // fail in this step, very strange! } } ``` Here is the error ```auto WARNING o.j.p.w.cps.CpsThreadGroup#saveProgramIfPossible: program state save failed an exception which occurred: in field com.cloudbees.groovy.cps.impl.BlockScopeEnv.locals in object com.cloudbees.groovy.cps.impl.BlockScopeEnv@3aedba14 in field com.cloudbees.groovy.cps.impl.CallEnv.caller in object com.cloudbees.groovy.cps.impl.FunctionCallEnv@1bd049a1 in field com.cloudbees.groovy.cps.Continuable.e in object org.jenkinsci.plugins.workflow.cps.SandboxContinuable@6f0bb0e5 in field org.jenkinsci.plugins.workflow.cps.CpsThread.program in object org.jenkinsci.plugins.workflow.cps.CpsThread@67734d87 in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.threads in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@3512814b in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@3512814b Caused: java.io.NotSerializableException: org.jenkinsci.plugins.workflow.cps.nodes.StepAtomNode at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:926) at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65) at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56) at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50) at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.HashMap.internalWriteEntries(HashMap.java:1793) at java.util.HashMap.writeObject(HashMap.java:1363) at sun.reflect.GeneratedMethodAccessor43.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.jboss.marshalling.reflect.JDKSpecific$SerMethods.callWriteObject(JDKSpecific.java:156) at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:191) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1028) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1082) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1040) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1082) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1040) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1019) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1082) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1040) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1019) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1082) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1040) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.river.BlockMarshaller.doWriteObject(BlockMarshaller.java:65) at org.jboss.marshalling.river.BlockMarshaller.writeObject(BlockMarshaller.java:56) at org.jboss.marshalling.MarshallerObjectOutputStream.writeObjectOverride(MarshallerObjectOutputStream.java:50) at org.jboss.marshalling.river.RiverObjectOutputStream.writeObjectOverride(RiverObjectOutputStream.java:179) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.concurrent.ConcurrentSkipListMap.writeObject(ConcurrentSkipListMap.java:1437) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.jboss.marshalling.reflect.JDKSpecific$SerMethods.callWriteObject(JDKSpecific.java:156) at org.jboss.marshalling.reflect.SerializableClass.callWriteObject(SerializableClass.java:191) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1028) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.river.RiverMarshaller.doWriteFields(RiverMarshaller.java:1082) at org.jboss.marshalling.river.RiverMarshaller.doWriteSerializableObject(RiverMarshaller.java:1040) at org.jboss.marshalling.river.RiverMarshaller.doWriteObject(RiverMarshaller.java:920) at org.jboss.marshalling.AbstractObjectOutput.writeObject(AbstractObjectOutput.java:58) at org.jboss.marshalling.AbstractMarshaller.writeObject(AbstractMarshaller.java:111) at org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.lambda$writeObject$0(RiverWriter.java:144) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:237) at org.jenkinsci.plugins.workflow.support.pickles.serialization.RiverWriter.writeObject(RiverWriter.java:143) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:557) Caused: java.io.IOException: Failed to persist /Users/henry.xu/.jenkins/jobs/test-pipeline/builds/2/program.dat at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:569) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgram(CpsThreadGroup.java:534) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.saveProgramIfPossible(CpsThreadGroup.java:517) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:441) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$400(CpsThreadGroup.java:96) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:312) at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:276) at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:67) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ``` It will work if I comment either the `getContext` or the `sh` line. Since it used to work properly, I guess it may be a bug of Jenkins. ---
**Author:** ![timja](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/timja/32/7_2.png) [@timja](https://community.jenkins.io/u/timja)\ **Post date:** [November 17, 2021, 8:01pm UTC](https://community.jenkins.io/t/unexpected-exception-when-use-getcontext-and-sh-together-in-the-latest-version-of-jenkins/828/2 "2021-11-17T20:01:01Z")
What are you doing this for? I doubt this is a supported feature ---
**Author:** ![link89](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/link89/32/579_2.png) [@link89](https://community.jenkins.io/u/link89)\ **Post date:** [November 18, 2021, 1:51am UTC](https://community.jenkins.io/t/unexpected-exception-when-use-getcontext-and-sh-together-in-the-latest-version-of-jenkins/828/3 "2021-11-18T01:51:35Z")
I use `getContext` to get the id of the current stage, so that I can build a link to access the log to the stage instead of the whole job. It is a formal step with document. [Pipeline: Basic Steps (jenkins.io)](https://www.jenkins.io/doc/pipeline/steps/workflow-basic-steps/#getcontext-get-contextual-object-from-internal-apis) I have used this for a long time and it works well on Jenkins 2.235.2 But it just broken after we upgrade to Jenkins 2.303.2 ---
**Author:** ![bpedersen2](https://dub1.discourse-cdn.com/flex013/user_avatar/community.jenkins.io/bpedersen2/32/367_2.png) [@bpedersen2](https://community.jenkins.io/u/bpedersen2)\ **Post date:** [November 18, 2021, 9:32am UTC](https://community.jenkins.io/t/unexpected-exception-when-use-getcontext-and-sh-together-in-the-latest-version-of-jenkins/828/4 "2021-11-18T09:32:32Z")
You overlooked: `For use from trusted code, such as global libraries, which can manipulate internal Jenkins APIs.` So put in a function marked as @NonCPS could work, I guess. ```auto import org.jenkinsci.plugins.workflow.graph.FlowNode @NonCPS def getFlowID() { def flow = getContext(FlowNode.class) echo flow.id } node() { stage("1") { getFlowID() sh "echo OK" } } ```