Shutdown Hook Corda integration testing - corda

Question

I have the following Corda service. It starts up a Jetty Server
#CordaService
class IOUService(private val serviceHub: AppServiceHub): SingletonSerializeAsToken() {
init {
val port = serviceHub.myInfo.addresses.first().port - 1002
log.println("IOUService init was called...")
log.println("Port: $port")
val jettyServer = JettyServer()
jettyServer.start(port)
}
}
My problem is how to release the stared Jetty port when running integration tests. Here are two example test (basically the same test twice to illustrate the problem):
#Test
fun `node test`() = withDriver {
val (partyAHandle, partyBHandle) = startNodes(bankA, bankB)
assertEquals(bankB.name, partyAHandle.resolveName(bankB.name))
assertEquals(bankA.name, partyBHandle.resolveName(bankA.name))
}
#Test
fun `node test2`() = withDriver {
val (partyAHandle, partyBHandle) = startNodes(bankA, bankB)
assertEquals(bankB.name, partyAHandle.resolveName(bankB.name))
assertEquals(bankA.name, partyBHandle.resolveName(bankA.name))
}
The first test will start up 3 nodes: one notary, BankA and BankB nodes with the following details:
Notary:
Advertised P2P messaging addresses : localhost:10000
RPC connection address : localhost:10001
RPC admin connection address : localhost:10002
Jetty Port: 8998
BankA:
Advertised P2P messaging addresses : localhost:10004
RPC connection address : localhost:10005
RPC admin connection address : localhost:10006
Jetty Port: 9002
BankB:
Advertised P2P messaging addresses : localhost:10008
RPC connection address : localhost:10009
RPC admin connection address : localhost:10010
Jetty Port: 9006
Unfortunately the second test will fails since the Jetty ports are still bound:
[ERROR] 14:22:04,825 [driver-pool-thread-0] internal.Node.installCordaServices - Corda service com.example.flows.IOUService failed to instantiate. Reason was: Address already in use [errorCode=1pryyp4, moreInformationAt=https://errors.corda.net/OS/4.1/1pryyp4]
java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:9006
How to register a shutdown hook during integration testing in order to shut down the Jetty servers?
The example code can be found here:
https://github.com/altfatterz/learning-corda

Answer 1

A proper lifecycle for corda services is currently being looked at. Hopefully, you can do this in the future.
For now, there is not a simple way to do this from within the node.