check if a resource is locked - jenkins

Question

I usually lock resources in my declarative pipeline with something like:
lock(resource: "MY_RESOURCE") {
// do something
}
but now I have several different resources I could use, is there a way to check if a resource is locked?
I would like to do something like:
myResources = ["RES1", "RES2", "RES3"]
hasResource = false
for (resource in myResources) {
if (hasresource) {
break
}
if (!isLocked(resource)) {
hasresource = true
lock(resource) {
// do something
}
}
}
(sorry if the syntax is wrong, I don't really program in groovy very often)

Answer 1

according to the sources of lock plugin this should work:
import org.jenkins.plugins.lockableresources.LockableResourcesManager as LRM
def myResources = ["RES1", "RES2", "RES3"]
def notLocked = myResources.find{rName->
LRM.get().forName(rName).with{ r-> !r.isLocked() && !r.isQueued() }
}
if(notLocked){
lock(notLocked){
//do smth
}
}

Answer 2

To Check if a particular resource is locked or not in jenkins
def manager = org.jenkins.plugins.lockableresources.LockableResourcesManager
def myResources = manager.get().fromName("test2")
//def myLabels = manager.get().allLabels // if you want to filter based on labels
def checkLocked = myResources.find { r ->
!r.isLocked() && !r.isQueued() }
if (checkLocked) {
def myResource = checkLocked.toString()
println myResource + "is locked"
}
else {
println "Specified Resource is not Locked"
}

Answer 3

Maybe not an optimal solution, but we managed to achieve this with following approach:
waitUntil {
lock(resource: 'RES1', skipIfLocked: true){
// do something with RES1
return true; // exit the waiting loop
}
lock(resource: 'RES2', skipIfLocked: true){
// do something with RES2
return true; // exit the waiting loop
}
lock(resource: 'RES3', skipIfLocked: true){
// do something with RES3
return true; // exit the waiting loop
}
}
We did it this way due to the following error we received when we tried to use the accepted answer:
Scripts not permitted to use staticMethod org.jenkins.plugins.lockableresources.LockableResourcesManager get