Not that kind of Map exception with Jenkins and Groovy - jenkins

Question

I have a string in groovy that I want to convert into a map. When I run the code on my local computer through a groovy script for testing, I have no issues and a lazy map is returned. I can then convert that to a regular map and life goes on. When I try the same code through my Jenkins DSL pipeline, I run into the exception
groovy.json.internal.Exceptions$JsonInternalException: Not that kind of map
Here is the code chunk in question:
import groovy.json.*
String string1 = "{value1={blue green=true, red pink=true, gold silver=true}, value2={red gold=false}, value3={silver brown=false}}"
def stringToMapConverter(String stringToBeConverted){
formattedString = stringToBeConverted.replace("=", ":")
def jsonSlurper = new JsonSlurper().setType(JsonParserType.LAX)
def mapOfString = jsonSlurper.parseText(formattedString)
return mapOfString
}
def returnedValue = stringToMapConverter(string1)
println(returnedValue)
returned value:
[value2:[red gold:false], value1:[red pink:true, gold silver:true, blue green:true], value3:[silver brown:false]]
I know that Jenkins and Groovy differ in various ways, but from searches online others suggest that I should be able to use the LAX JsonSlurper library within my groovy pipeline. I am trying to avoid hand rolling my own string to map converter and would prefer to use a library if it's out there. What could be the difference here that would cause this behavior?

Answer 1

Try to use
import groovy.json.*
//#NonCPS
def parseJson(jsonString) {
// Would like to use readJSON step, but it requires a context, even for parsing just text.
def lazyMap = new JsonSlurper().setType(JsonParserType.LAX).parseText(jsonString.replace("=", ":").normalize())
// JsonSlurper returns a non-serializable LazyMap, so copy it into a regular map before returning
def m = [:]
m.putAll(lazyMap)
return m
}
String string1 = "{value1={blue green=true, red pink=true, gold silver=true}, value2={red gold=false}, value3={silver brown=false}}"
def returnedValue = parseJson(string1)
println(returnedValue)
println(JsonOutput.toJson(returnedValue))
You can find information about normalize here.