问题
I need to parse some JSON in a Jenkins Pipeline and call some regular methods in a loop, however the script always exits after the first function call. How to do this?
import groovy.json.JsonSlurper
import com.cloudbees.groovy.cps.NonCPS
@NonCPS
def myMethod(String json) {
def jsonSlurper = new JsonSlurper()
def jsonObject = jsonSlurper(json)
jsonObject.each {
obj ->
switch(obj.name) {
case "foo":
doAThing(obj)
break
case "bar":
doAnotherThing(obj)
break
}
}
}
In the above example, even with a json object like:
[{
"name": "foo"
}, {
"name": "bar"
}]
...the pipeline always exits after the first iteration. This is presumably due to mixing sync and async functions. Is there any way to do this?
回答1:
I've resolved this issue essentially by doing the following:
import groovy.json.JsonSlurper
def myMethod(String json) {
def jsonSlurper = new JsonSlurper()
def jsonObject = jsonSlurper(json)
jsonSlurper = null
for(int i = 0; i < jsonObject.size(); i++) {
switch(jsonObject[i].name) {
case "foo":
doAThing(jsonObject[i])
break
case "bar":
doAnotherThing(jsonObject[i])
break
}
}
}
Immediately destroy the JsonSlurper instance after it's used, remove @NonCPS annotation, switch to a c-style for loop instead of each.
回答2:
Just to clarify, this is documented as an unsupported feature - https://github.com/jenkinsci/workflow-cps-plugin/#technical-design
You may not call regular (CPS-transformed) methods, or Pipeline steps, from a @NonCPS method, so they are best used for performing some calculations before passing a summary back to the main script.
来源:https://stackoverflow.com/questions/36636017/jenkins-groovy-how-to-call-methods-from-noncps-method-without-ending-pipeline