How to create a MXBean with control methods? - kotlin

Question

We are planning to implement some behaviour control in our
CordApp, for testing purposes. Is that possible to create a
M(X)Bean, accessible via JMX, which is going to change some
internal flags in our CordApp ? If this is not a good design
choice, please inform the best practice to follow.
Basically, we have a set of flags, like these:
abstract class BaseFlow() : FlowLogic<SignedTransaction>() {
var flagBehaviourOne : Boolean = true
var flagBehaviourTwo : Boolean = true
var flagBehaviourThree: Boolean = true
var flagBehaviourFour : Boolean = true
...
}
then, in some implementing class, we have something like this:
object SomeFlow {
#InitiatingFlow
class Initiator(private val destinatario: Party,
private val parameter: StateObject,
private val isAnonymous: Boolean = false,
private val pointer: Any) : BaseFlow() {
...
#Suspendable
override fun call(): SignedTransaction {
if (flagBehaviourOne || flagBehaviorTwo) {
// enforce some specific behaviour
}
...
} // end of SomeFlow.Initiator
...
} // end of SomeFlow

Answer 1

I have (partially) solved my problem.
I have added a new object class, along with its jmx interface :
package vfalcao.example.jmx
import java.lang.management.ManagementFactory
import javax.management.MXBean
import javax.management.ObjectName
#MXBean
interface BehaviourControlMXBean {
fun setBehaviourOne(newValue: String)
fun isBehaviourOne() : String
...
// other "behaviours" ommited for brevity
}
object BehaviourControl : BehaviourControlMXBean {
// internal data
...
init {
val objectName = ObjectName("vfalcao.example.jmx:type=BehaviourControl,name=def")
val platformMBeanServer = ManagementFactory.getPlatformMBeanServer()
platformMBeanServer.registerMBean(this, objectName)
}
}
then, in my BaseFlow class:
abstract class BaseFlow() : FlowLogic<SignedTransaction>() {
companion object {
...
init {
println("${BehaviourControl}")
}
...
fun test() {
var behaviour1 = ((BehaviourControl.props["behaviour1"] as String).toBoolean())
if (behaviour1) {
// do something controlled by behaviour1
}
}
}
...
}