Jenkins Groovy Pipeline Get (Windows)User Folder Per Node - windows

Question

I have a distributed Jenkins build and the user under which the jenkins process runs on the slaves is not necessarily static, so I need a mechanism to get the user per node.
I am trying something like
#!/usr/bin/env groovy
class TestSettings {
public static String NuGetPackagesPath = "${env.USERPROFILE}\\.nuget\\packages"
}
node("master"){
println env.USERPROFILE // works as expected
println TestSettings.NuGetPackagesPath // throws exception
}
node("build"){
println env.USERPROFILE // works as expected
println TestSettings.NuGetPackagesPath // throws exception
}

Answer 1

env doesn't work in the static property, because the property is already initialized before you enter the node closure. So env just isn't available yet.
I see two ways around this:
Turn the property into a function and pass the env variable as parameter.
Make it a non-static function and pass env to the class constructor.
I would propably go with the latter as it will be easier to use when you have many test settings.
class TestSettings {
public static String getNuGetPackagesPath( def env ) { "${env.USERPROFILE}\\.nuget\\packages" }
}
class TestSettings2 {
def env = null
TestSettings2( def env ) {
this.env = env
}
public String getNuGetPackagesPath() { "${env.USERPROFILE}\\.nuget\\packages" }
}
node("master"){
println env.USERPROFILE
println TestSettings.getNuGetPackagesPath( env )
def testSettings = new TestSettings2( env )
// Note that we can use the method like a property!
println testSettings.nuGetPackagesPath
}