how to avoid cps error using XmlSlurper() method in jenkins pipeline
jfern...@forgottenempires.net
I am using a simple test pipeline to get a username out of a xml file, I have written a simple function using the XmlSlurper method and I have included the @NonCPS annotation at the beginning of the function but I keep getting an error, even though the function seems to work as it prints out in the console the username I am trying to find but it finishes the build with failure status. This is the pipeline:
```
import groovy.xml.*
import jenkins.model.Jenkins
@NonCPS
def findComitter(){
committer = ""
found = false
file = new XmlSlurper().parse("C:/Users/User/.jenkins/jobs/Phoenix_pipeline/builds/288/changelog6429015253614530280.xml")
file.entry.each { entry ->
entry.changenumber.each { changenumber ->
changenumber.children().each { tag ->
if(tag.name() == "changeUser" && found != true){
committer = tag.text()
found = true
}
}
}
}
println committer
//return committer.toString()
}
pipeline {
agent any
stages {
stage('test') {
steps {
findComitter()
}
}
}
}
```
this is the output I get, as you can see the function call seems to work as it get to the ```println commiter``` step but then I get an error and failure build status:
```
00:00:00.021 [Pipeline] Start of Pipeline
00:00:00.121 [Pipeline] node
00:00:00.129 Running on Jenkins in C:\Users\User\.jenkins\workspace\test
00:00:00.140 [Pipeline] {
00:00:00.157 [Pipeline] stage
00:00:00.161 [Pipeline] { (Hello)
00:00:00.180 [Pipeline] echo
00:00:00.182 Hello World
00:00:00.202 [Pipeline] echo
00:00:00.204 jaydenm
00:00:00.207 [Pipeline] }
00:00:00.220 [Pipeline] // stage
00:00:00.230 [Pipeline] }
00:00:00.242 [Pipeline] // node
00:00:00.264 [Pipeline] End of Pipeline
00:00:00.293 an exception which occurred:
00:00:00.293 in field org.jenkinsci.plugins.pipeline.modeldefinition.withscript.WithScriptScript.script
00:00:00.293 in object org.jenkinsci.plugins.pipeline.modeldefinition.agent.impl.LabelScript@49af372
00:00:00.293 in field groovy.lang.Closure.delegate
00:00:00.293 in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@18d98e8e
00:00:00.293 in field groovy.lang.Closure.delegate
00:00:00.293 in object org.jenkinsci.plugins.workflow.cps.CpsClosure2@43324839
00:00:00.293 in field org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.closures
00:00:00.293 in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@76d386ff
00:00:00.293 in object org.jenkinsci.plugins.workflow.cps.CpsThreadGroup@76d386ff
00:00:00.293 Caused: java.io.NotSerializableException: groovy.util.slurpersupport.NodeChild
```
I have been looking through the SO threads and all the info I got is to use the @NonCPS annotation to use any non-serializable objects, which I have done.
Reinhold Füreder
Hi jfernandez,
Naïve guess(es):
- Are you maybe missing this:
import com.cloudbees.groovy.cps.NonCPS
- though not sure if the annotation would/should not then lead to an error instead already?
- Or is this a declarative pipeline and you are missing the script { … } step based wrapping of calling your findCommitter() method (assuming that calling it when being declared in the declarative pipeline is even allowed like this)?
steps {
script {
findComitter()
}
}
HTH Reinhold
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