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Add tests for replayed and reordered messages
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Dimos Raptis
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1af6e89927
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package net.corda.node.flows
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import co.paralleluniverse.fibers.Suspendable
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import net.corda.core.context.InvocationContext
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import net.corda.core.flows.FlowLogic
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import net.corda.core.flows.FlowSession
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import net.corda.core.flows.InitiatedBy
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import net.corda.core.flows.InitiatingFlow
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import net.corda.core.flows.StartableByRPC
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import net.corda.core.identity.CordaX500Name
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import net.corda.core.identity.Party
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import net.corda.core.messaging.MessageRecipients
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import net.corda.core.serialization.CordaSerializable
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import net.corda.core.utilities.unwrap
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import net.corda.node.services.statemachine.MessageType.DATA_MESSAGE
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import net.corda.node.services.statemachine.MessageType.SESSION_CONFIRM
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import net.corda.node.services.statemachine.MessageType.SESSION_INIT
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import net.corda.node.services.statemachine.StaffedFlowHospital
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import net.corda.testing.node.InMemoryMessagingNetwork
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import net.corda.testing.node.internal.InternalMockNetwork
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import net.corda.testing.node.internal.InternalMockNodeParameters
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import net.corda.testing.node.internal.MessagingServiceSpy
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import net.corda.testing.node.internal.TestStartedNode
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import net.corda.testing.node.internal.enclosedCordapp
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import net.corda.testing.node.internal.getMessage
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import org.assertj.core.api.Assertions.assertThat
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import org.junit.After
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import org.junit.Before
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import org.junit.Test
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class FlowMessageReplayTest {
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private lateinit var mockNetwork: InternalMockNetwork
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private lateinit var partyA: TestStartedNode
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private lateinit var partyB: TestStartedNode
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companion object {
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private const val NUMBER_OF_MESSAGES = 100
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}
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@Before
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fun setup() {
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mockNetwork = InternalMockNetwork(
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cordappsForAllNodes = listOf(enclosedCordapp()),
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notarySpecs = emptyList(),
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threadPerNode = true,
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networkSendManuallyPumped = false
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)
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partyA = mockNetwork.createNode(InternalMockNodeParameters(legalName = CordaX500Name("PartyA", "Berlin", "DE")))
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partyB = mockNetwork.createNode(InternalMockNodeParameters(legalName = CordaX500Name("PartyB", "Berlin", "DE")))
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mockNetwork.startNodes()
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}
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@After
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fun tearDown() {
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mockNetwork.stopNodes()
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StaffedFlowHospital.onFlowKeptForOvernightObservation.clear()
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}
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@Test(timeout=300_000)
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fun `messages that are being replayed by the messaging layer are successfully deduplicated by the state machine`() {
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var messagesReceived = emptyList<InMemoryMessagingNetwork.MessageTransfer>()
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mockNetwork.messagingNetwork.receivedMessages.subscribe { messagesReceived = messagesReceived + it }
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partyA.setMessagingServiceSpy(DelayedReplayMessagingServiceSpy())
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partyB.setMessagingServiceSpy(DelayedReplayMessagingServiceSpy())
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partyA.services.startFlow(InitiatorFlow(partyB.info.legalIdentities.first(), NUMBER_OF_MESSAGES), InvocationContext.shell()).toCompletableFuture().get().resultFuture.get()
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val dataMessagesFromA = filterMessages(messagesReceived, partyA, DATA_MESSAGE).size
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val sessionConfirmationFromB = filterMessages(messagesReceived, partyB, SESSION_CONFIRM).size
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// all messages are sent twice except the first one
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assertThat(dataMessagesFromA).isEqualTo(2*NUMBER_OF_MESSAGES-1)
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assertThat(sessionConfirmationFromB).isEqualTo(2)
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}
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@Test(timeout=300_000)
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fun `messages that are being reordered by the network are being processed successfully in order by the state machine`() {
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val messagesReceived = mutableListOf<InMemoryMessagingNetwork.MessageTransfer>()
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mockNetwork.messagingNetwork.receivedMessages.subscribe { messagesReceived.add(it) }
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partyA.setMessagingServiceSpy(ReorderingMessagingServiceSpy())
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partyA.services.startFlow(InitiatorFlow(partyB.info.legalIdentities.first(), NUMBER_OF_MESSAGES), InvocationContext.shell()).toCompletableFuture().get().resultFuture.get()
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}
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private fun filterMessages(messages: List<InMemoryMessagingNetwork.MessageTransfer>, from: TestStartedNode, messageType: net.corda.node.services.statemachine.MessageType): List<InMemoryMessagingNetwork.MessageTransfer> {
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return messages.filter {
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it.sender.name == from.info.legalIdentities.first().name &&
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it.getMessage().uniqueMessageId.messageType == messageType
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}
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}
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@StartableByRPC
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@InitiatingFlow
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class InitiatorFlow(private val other: Party, private val numberOfMessages: Int) : FlowLogic<Unit>() {
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@Suspendable
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override fun call() {
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val session = initiateFlow(other)
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session.send(Message(MessageType.INITIAL_SESSION_MESSAGE, numberOfMessages))
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for(step in 1..numberOfMessages) {
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session.send(Message(MessageType.REGULAR_DATA_MESSAGE, step))
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logger.info("Sending message $step")
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}
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val closingMessage = session.receive<Message>().unwrap { it }
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assertThat(closingMessage.type).isEqualTo(MessageType.REGULAR_DATA_MESSAGE)
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assertThat(closingMessage.payload).isEqualTo(1)
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}
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}
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@InitiatedBy(InitiatorFlow::class)
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class InitiatedFlow(val session: FlowSession) : FlowLogic<Unit>() {
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@Suspendable
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override fun call() {
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val initialMessage = session.receive<Message>().unwrap { it }
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assertThat(initialMessage.type).isEqualTo(MessageType.INITIAL_SESSION_MESSAGE)
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val numberOfMessages = initialMessage.payload
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for(step in 1..numberOfMessages) {
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val dataMessage = session.receive<Message>().unwrap { it }
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assertThat(dataMessage.type).isEqualTo(MessageType.REGULAR_DATA_MESSAGE)
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assertThat(dataMessage.payload).isEqualTo(step)
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logger.info("Received message $step")
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}
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session.send(Message(MessageType.REGULAR_DATA_MESSAGE, 1))
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}
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}
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@CordaSerializable
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data class Message(val type: MessageType, val payload: Int)
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@CordaSerializable
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enum class MessageType {
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INITIAL_SESSION_MESSAGE,
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REGULAR_DATA_MESSAGE
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}
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class DelayedReplayMessagingServiceSpy: MessagingServiceSpy() {
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private var lastMessage: Triple<net.corda.node.services.messaging.Message, MessageRecipients, Any>? = null
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override fun send(message: net.corda.node.services.messaging.Message, target: MessageRecipients, sequenceKey: Any) {
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if (message.uniqueMessageId.messageType != SESSION_INIT) {
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if (lastMessage == null) {
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messagingService.send(message, target, sequenceKey)
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lastMessage = Triple(message, target, sequenceKey)
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} else {
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messagingService.send(message, target, sequenceKey)
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// replay old message
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messagingService.send(lastMessage!!.first, lastMessage!!.second, lastMessage!!.third)
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lastMessage = Triple(message, target, sequenceKey)
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}
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} else {
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messagingService.send(message, target, sequenceKey)
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}
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}
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}
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class ReorderingMessagingServiceSpy: MessagingServiceSpy() {
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private val buffer: MutableList<Triple<net.corda.node.services.messaging.Message, MessageRecipients, Any>> = mutableListOf()
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override fun send(message: net.corda.node.services.messaging.Message, target: MessageRecipients, sequenceKey: Any) {
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if (message.uniqueMessageId.messageType == DATA_MESSAGE) {
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buffer.add(Triple(message, target, sequenceKey))
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if (buffer.size == 5) {
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buffer.shuffle()
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buffer.forEach { msg ->
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messagingService.send(msg.first, msg.second, msg.third)
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}
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buffer.clear()
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}
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} else {
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messagingService.send(message, target, sequenceKey)
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}
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}
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}
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}
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@ -16,6 +16,7 @@ import net.corda.node.services.config.NodeConfiguration
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import net.corda.node.services.messaging.*
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import net.corda.node.services.statemachine.ExternalEvent
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import net.corda.node.services.messaging.SenderDeduplicationInfo
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import net.corda.node.services.statemachine.MessageType
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import net.corda.node.services.statemachine.SessionId
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import net.corda.node.utilities.AffinityExecutor
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import net.corda.nodeapi.internal.lifecycle.ServiceStateHelper
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@ -298,7 +299,10 @@ class MockNodeMessagingService(private val configuration: NodeConfiguration,
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}
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override fun insideDatabaseTransaction() {
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processedMessages += transfer.message.uniqueMessageId
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// replicating the real behaviour, where only session-init messages are deduplicated at the messaging layer.
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if (transfer.message.uniqueMessageId.messageType == MessageType.SESSION_INIT) {
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processedMessages += transfer.message.uniqueMessageId
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}
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}
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}
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