The method named `exists` from the first email is fine and does not have any problems. Adding @NonCPS to it is incorrect as explained here <https://www.jenkins.io/doc/book/pipeline/cps-method-mismatches/#use-of-pipeline-steps-fromnoncps> and causes the “expected to call Script4.exists but wound up catching sh” warning.
You mentioned using Groovy’s `String.execute()` extension method, which I suspect is the real problem, because that method creates a `java.lang.Process`, which cannot be serialized, and ends up stored as a local variable in the Pipeline, which causes the original error you posted. The Pipeline is serialized after steps execute (when using the default MAX_SURVIVABILITY durability level), which is why you don’t see the error until after the `sh` step runs. You should not call `String.execute` or other similar Java or Groovy methods related to processes inside of a Pipeline, you should always use the `sh` or `bat` steps. Methods related to `java.lang.Process` will always execute the process on the master (which is probably not the behavior you want), and they are not allowed in the sandbox by default because users can use those methods to trivially bypass all security on the Jenkins master. > On Jun 8, 2020, at 18:57, Slide <[email protected]> wrote: > > Can you share your Jenkinsfile? There may be some contextual information that > would help people help you. > > On Mon, Jun 8, 2020 at 3:08 PM chencho m-a <[email protected] > <mailto:[email protected]>> wrote: > I altready tried this, with this output. > > expected to call Script4.exists but wound up catching sh; see: > https://jenkins.io/redirect/pipeline-cps-method-mismatches/ > <https://jenkins.io/redirect/pipeline-cps-method-mismatches/> > > NOTE: if I use execute().text, instead of sh, it works fine. > > > > > El lunes, 8 de junio de 2020, 19:42:15 (UTC+2), Jérôme Godbout escribió: > Yet another case of @NonCPS, this serializable requirements for functions is > such a terrible idea, talk about tentacular requirements that destroy > standard calls. They should have put recovery point function, where the > context would have been saved and the script could add them as it please, > this would have prevent all this @NonCPS nightmare and lead to a more > standard code with standard groovy. > > > Add @NonCPS decorator to your functions: > > > @NonCPS > > def MyFct() { > > … do your stuff here > > } > > > This prevent serialization of each actions into that functions. > > > From: [email protected] <> <[email protected] <>> On > Behalf Of chencho m-a > Sent: June 8, 2020 5:19 AM > To: Jenkins Users <[email protected] <>> > Subject: java.io <http://java.io/>.NotSerializableException: > java.lang.UNIXProcess > > > Hi all, > > > I have a (I hope) stupid issue that i am not able to solve > > > I am calling to a method that only call a bash script like this. > > > > def exists(path) { > > try{ > > sh(script:'ls -l', > > returnStdout: true).trim() > > return false > > } catch (err){ error "-E- Failed to run fs.exists(${path}), Exception > err: ${err}"} > > } > > > > And I am always getting this exception > > > 07:55:59 java.io.NotSerializableException: java.lang.UNIXProcess > [Pipeline] End of Pipeline > an exception which occurred: > in field groovy.lang.Closure.delegate > in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@5ac3f4cc <> > in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.closures > in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@239d9620 > <> > in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@239d9620 > <> > Caused: java.io.NotSerializableException: java.lang.UNIXProcess > 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.LinkedHashMap.internalWriteEntries(LinkedHashMap.java:333) > at java.util.HashMap.writeObject(HashMap.java:1363) > at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > ... > > > > Any clue? > > Jenkins 2.222.4 > > > -- > You received this message because you are subscribed to the Google Groups > "Jenkins Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jenkinsci-users/1c647bd5-c779-427a-bf98-1a61b5074b65o%40googlegroups.com > > <https://groups.google.com/d/msgid/jenkinsci-users/1c647bd5-c779-427a-bf98-1a61b5074b65o%40googlegroups.com?utm_medium=email&utm_source=footer>. > > > -- > You received this message because you are subscribed to the Google Groups > "Jenkins Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jenkinsci-users/ffbb95d8-8fa2-4401-8a75-5480a10fce1do%40googlegroups.com > > <https://groups.google.com/d/msgid/jenkinsci-users/ffbb95d8-8fa2-4401-8a75-5480a10fce1do%40googlegroups.com?utm_medium=email&utm_source=footer>. > > > -- > Website: http://earl-of-code.com <http://earl-of-code.com/> > > -- > You received this message because you are subscribed to the Google Groups > "Jenkins Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jenkinsci-users/CAPiUgVeZYcBrJa4yzNHf76i6xg3wRyZRFTDtg65oRWLFscR5Zg%40mail.gmail.com > > <https://groups.google.com/d/msgid/jenkinsci-users/CAPiUgVeZYcBrJa4yzNHf76i6xg3wRyZRFTDtg65oRWLFscR5Zg%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. 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