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Code Issues Actions 2 Packages Projects Releases Wiki Activity

Add hard restart test

Browse Source 
Remove default async db flush

Add in-memory P2P deduplication until we commit the ID persisting tx

Add some explaining comments

Make scheduled state kickoffs atomic with flow starts
This commit is contained in:
Andras Slemmer 2018-03-13 15:50:57 +00:00
parent 6d99f7e5d4
commit bb2643cf2e
25 changed files with 370 additions and 148 deletions
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4
.ci/api-current.txt
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@ -3996,10 +3996,6 @@ public static final class net.corda.testing.node.InMemoryMessagingNetwork$Compan
public int hashCode()
@org.jetbrains.annotations.NotNull public String toString()
##
public static final class net.corda.testing.node.InMemoryMessagingNetwork$InMemoryMessaging$pumpReceiveInternal$1$1$acknowledgeHandle$1 extends java.lang.Object implements net.corda.node.services.messaging.AcknowledgeHandle
public void acknowledge()
public void persistDeduplicationId()
##
public static interface net.corda.testing.node.InMemoryMessagingNetwork$LatencyCalculator
@org.jetbrains.annotations.NotNull public abstract java.time.Duration between(net.corda.core.messaging.SingleMessageRecipient, net.corda.core.messaging.SingleMessageRecipient)
##

162
node/src/integration-test/kotlin/net/corda/node/services/statemachine/HardRestartTest.kt Normal file
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@ -0,0 +1,162 @@
package net.corda.node.services.statemachine
import co.paralleluniverse.fibers.Suspendable
import net.corda.client.rpc.CordaRPCClient
import net.corda.core.flows.*
import net.corda.core.identity.Party
import net.corda.core.internal.concurrent.fork
import net.corda.core.internal.concurrent.transpose
import net.corda.core.messaging.CordaRPCOps
import net.corda.core.messaging.startFlow
import net.corda.core.utilities.getOrThrow
import net.corda.core.utilities.unwrap
import net.corda.node.services.Permissions
import net.corda.testing.core.DUMMY_BANK_A_NAME
import net.corda.testing.core.DUMMY_BANK_B_NAME
import net.corda.testing.core.singleIdentity
import net.corda.testing.driver.DriverParameters
import net.corda.testing.driver.OutOfProcess
import net.corda.testing.driver.driver
import net.corda.testing.node.User
import org.junit.Test
import java.util.*
import java.util.concurrent.CountDownLatch
import java.util.concurrent.Executors
import kotlin.concurrent.thread
class HardRestartTest {
@StartableByRPC
@InitiatingFlow
class Ping(val pongParty: Party) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
val pongSession = initiateFlow(pongParty)
pongSession.sendAndReceive<Unit>(Unit)
}
}
@InitiatedBy(Ping::class)
class Pong(val pingSession: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
pingSession.sendAndReceive<Unit>(Unit)
}
}
@Test
fun restartPingPongFlowRandomly() {
val demoUser = User("demo", "demo", setOf(Permissions.startFlow<Ping>(), Permissions.all()))
driver(DriverParameters(isDebug = true, startNodesInProcess = false)) {
val (a, b) = listOf(
startNode(providedName = DUMMY_BANK_A_NAME, rpcUsers = listOf(demoUser), customOverrides = mapOf("p2pAddress" to "localhost:30000")),
startNode(providedName = DUMMY_BANK_B_NAME, rpcUsers = listOf(demoUser), customOverrides = mapOf("p2pAddress" to "localhost:40000"))
).transpose().getOrThrow()
val latch = CountDownLatch(1)
// We kill -9 and restart the Pong node after a random sleep
val pongRestartThread = thread {
latch.await()
val ms = Random().nextInt(1000)
println("Sleeping $ms ms before kill")
Thread.sleep(ms.toLong())
(b as OutOfProcess).process.destroyForcibly()
b.stop()
startNode(providedName = DUMMY_BANK_B_NAME, rpcUsers = listOf(demoUser), customOverrides = mapOf("p2pAddress" to "localhost:40000"))
}
CordaRPCClient(a.rpcAddress).use(demoUser.username, demoUser.password) {
val returnValue = it.proxy.startFlow(::Ping, b.nodeInfo.singleIdentity()).returnValue
latch.countDown()
// No matter the kill
returnValue.getOrThrow()
}
pongRestartThread.join()
}
}
sealed class RecursiveMode {
data class Top(val otherParty: Party, val initialDepth: Int) : RecursiveMode()
data class Recursive(val otherSession: FlowSession) : RecursiveMode()
}
@StartableByRPC
@InitiatingFlow
@InitiatedBy(RecursiveB::class)
class RecursiveA(val mode: RecursiveMode) : FlowLogic<String>() {
constructor(otherSession: FlowSession) : this(RecursiveMode.Recursive(otherSession))
constructor(otherParty: Party, initialDepth: Int) : this(RecursiveMode.Top(otherParty, initialDepth))
@Suspendable
override fun call(): String {
return when (mode) {
is HardRestartTest.RecursiveMode.Top -> {
val session = initiateFlow(mode.otherParty)
session.sendAndReceive<String>(mode.initialDepth).unwrap { it }
}
is HardRestartTest.RecursiveMode.Recursive -> {
val depth = mode.otherSession.receive<Int>().unwrap { it }
val string = if (depth > 0) {
val newSession = initiateFlow(mode.otherSession.counterparty)
newSession.sendAndReceive<String>(depth).unwrap { it }
} else {
"-"
}
mode.otherSession.send(string)
string
}
}
}
}
@InitiatingFlow
@InitiatedBy(RecursiveA::class)
class RecursiveB(val otherSession: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
val depth = otherSession.receive<Int>().unwrap { it }
val newSession = initiateFlow(otherSession.counterparty)
val string = newSession.sendAndReceive<String>(depth - 1).unwrap { it }
otherSession.send(string + ":" + depth)
}
}
@Test
fun restartRecursiveFlowRandomly() {
val demoUser = User("demo", "demo", setOf(Permissions.startFlow<RecursiveA>(), Permissions.all()))
driver(DriverParameters(isDebug = true, startNodesInProcess = false)) {
val (a, b) = listOf(
startNode(providedName = DUMMY_BANK_A_NAME, rpcUsers = listOf(demoUser), customOverrides = mapOf("p2pAddress" to "localhost:30000")),
startNode(providedName = DUMMY_BANK_B_NAME, rpcUsers = listOf(demoUser), customOverrides = mapOf("p2pAddress" to "localhost:40000"))
).transpose().getOrThrow()
val latch = CountDownLatch(1)
// We kill -9 and restart the node B after a random sleep
val bRestartThread = thread {
latch.await()
val ms = Random().nextInt(1000)
println("Sleeping $ms ms before kill")
Thread.sleep(ms.toLong())
(b as OutOfProcess).process.destroyForcibly()
b.stop()
startNode(providedName = DUMMY_BANK_B_NAME, rpcUsers = listOf(demoUser), customOverrides = mapOf("p2pAddress" to "localhost:40000"))
}
val executor = Executors.newFixedThreadPool(8)
try {
val tlRpc = ThreadLocal<CordaRPCOps>()
(1 .. 10).map { num ->
executor.fork {
val rpc = tlRpc.get() ?: CordaRPCClient(a.rpcAddress).start(demoUser.username, demoUser.password).proxy.also { tlRpc.set(it) }
val string = rpc.startFlow(::RecursiveA, b.nodeInfo.singleIdentity(), 10).returnValue.getOrThrow()
latch.countDown()
println("$num: $string")
}
}.transpose().getOrThrow()
bRestartThread.join()
} finally {
executor.shutdown()
}
}
}
}

6
node/src/integration-test/kotlin/net/corda/services/messaging/P2PMessagingTest.kt
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@ -180,7 +180,7 @@ class P2PMessagingTest : IntegrationTest() {
val response = it.internalServices.networkService.createMessage("test.response", responseMessage.serialize().bytes)
it.internalServices.networkService.send(response, request.replyTo)
}
handler.acknowledge()
handler.afterDatabaseTransaction()
}
}
return crashingNodes
@ -212,7 +212,7 @@ class P2PMessagingTest : IntegrationTest() {
val request = netMessage.data.deserialize<TestRequest>()
val response = internalServices.networkService.createMessage("test.response", message.serialize().bytes)
internalServices.networkService.send(response, request.replyTo)
handle.acknowledge()
handle.afterDatabaseTransaction()
}
}
@ -239,7 +239,7 @@ class P2PMessagingTest : IntegrationTest() {
check(!consumed.getAndSet(true)) { "Called more than once" }
check(msg.topic == topic) { "Topic/session mismatch: ${msg.topic} vs $topic" }
callback(msg)
handle.acknowledge()
handle.afterDatabaseTransaction()
}
}

6
node/src/main/kotlin/net/corda/node/internal/AbstractNode.kt
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@ -57,6 +57,7 @@ import net.corda.node.services.events.NodeSchedulerService
import net.corda.node.services.events.ScheduledActivityObserver
import net.corda.node.services.identity.PersistentIdentityService
import net.corda.node.services.keys.PersistentKeyManagementService
import net.corda.node.services.messaging.DeduplicationHandler
import net.corda.node.services.messaging.MessagingService
import net.corda.node.services.network.*
import net.corda.node.services.persistence.*
@ -74,7 +75,6 @@ import net.corda.nodeapi.internal.DevIdentityGenerator
import net.corda.nodeapi.internal.NodeInfoAndSigned
import net.corda.nodeapi.internal.crypto.X509Utilities
import net.corda.nodeapi.internal.persistence.*
import net.corda.nodeapi.internal.sign
import net.corda.nodeapi.internal.persistence.CordaPersistence
import net.corda.nodeapi.internal.persistence.DatabaseConfig
import net.corda.nodeapi.internal.persistence.HibernateConfiguration
@ -873,8 +873,8 @@ internal fun logVendorString(database: CordaPersistence, log: Logger) {
}
internal class FlowStarterImpl(private val smm: StateMachineManager, private val flowLogicRefFactory: FlowLogicRefFactory) : FlowStarter {
override fun <T> startFlow(logic: FlowLogic<T>, context: InvocationContext): CordaFuture<FlowStateMachine<T>> {
return smm.startFlow(logic, context)
override fun <T> startFlow(logic: FlowLogic<T>, context: InvocationContext, deduplicationHandler: DeduplicationHandler?): CordaFuture<FlowStateMachine<T>> {
return smm.startFlow(logic, context, ourIdentity = null, deduplicationHandler = deduplicationHandler)
}
override fun <T> invokeFlowAsync(

4
node/src/main/kotlin/net/corda/node/services/api/ServiceHubInternal.kt
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@ -29,6 +29,7 @@ import net.corda.core.utilities.contextLogger
import net.corda.node.internal.InitiatedFlowFactory
import net.corda.node.internal.cordapp.CordappProviderInternal
import net.corda.node.services.config.NodeConfiguration
import net.corda.node.services.messaging.DeduplicationHandler
import net.corda.node.services.messaging.MessagingService
import net.corda.node.services.network.NetworkMapUpdater
import net.corda.node.services.statemachine.FlowStateMachineImpl
@ -137,8 +138,9 @@ interface FlowStarter {
/**
* Starts an already constructed flow. Note that you must be on the server thread to call this method.
* @param context indicates who started the flow, see: [InvocationContext].
* @param deduplicationHandler allows exactly-once start of the flow, see [DeduplicationHandler]
*/
fun <T> startFlow(logic: FlowLogic<T>, context: InvocationContext): CordaFuture<FlowStateMachine<T>>
fun <T> startFlow(logic: FlowLogic<T>, context: InvocationContext, deduplicationHandler: DeduplicationHandler? = null): CordaFuture<FlowStateMachine<T>>
/**
* Will check [logicType] and [args] against a whitelist and if acceptable then construct and initiate the flow.

33
node/src/main/kotlin/net/corda/node/services/events/NodeSchedulerService.kt
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@ -36,10 +36,12 @@ import net.corda.node.MutableClock
import net.corda.node.services.api.FlowStarter
import net.corda.node.services.api.NodePropertiesStore
import net.corda.node.services.api.SchedulerService
import net.corda.node.services.messaging.DeduplicationHandler
import net.corda.node.utilities.PersistentMap
import net.corda.nodeapi.internal.persistence.CordaPersistence
import net.corda.nodeapi.internal.persistence.NODE_DATABASE_PREFIX
import org.apache.activemq.artemis.utils.ReusableLatch
import org.apache.mina.util.ConcurrentHashSet
import org.slf4j.Logger
import java.time.Duration
import java.time.Instant
@ -172,6 +174,10 @@ class NodeSchedulerService(private val clock: CordaClock,
var rescheduled: GuavaSettableFuture<Boolean>? = null
}
// Used to de-duplicate flow starts in case a flow is starting but the corresponding entry hasn't been removed yet
// from the database
private val startingStateRefs = ConcurrentHashSet<ScheduledStateRef>()
private val mutex = ThreadBox(InnerState())
// We need the [StateMachineManager] to be constructed before this is called in case it schedules a flow.
fun start() {
@ -212,7 +218,7 @@ class NodeSchedulerService(private val clock: CordaClock,
val previousEarliest = scheduledStatesQueue.peek()
scheduledStatesQueue.remove(previousState)
scheduledStatesQueue.add(action)
if (previousState == null) {
if (previousState == null && action !in startingStateRefs) {
unfinishedSchedules.countUp()
}
@ -279,16 +285,34 @@ class NodeSchedulerService(private val clock: CordaClock,
schedulerTimerExecutor.join()
}
private inner class FlowStartDeduplicationHandler(val scheduledState: ScheduledStateRef) : DeduplicationHandler {
override fun insideDatabaseTransaction() {
scheduledStates.remove(scheduledState.ref)
}
override fun afterDatabaseTransaction() {
startingStateRefs.remove(scheduledState)
}
override fun toString(): String {
return "${javaClass.simpleName}($scheduledState)"
}
}
private fun onTimeReached(scheduledState: ScheduledStateRef) {
var flowName: String? = "(unknown)"
try {
database.transaction {
val scheduledFlow = getScheduledFlow(scheduledState)
// We need to check this before the database transaction, otherwise there is a subtle race between a
// doubly-reached deadline and the removal from [startingStateRefs].
if (scheduledState !in startingStateRefs) {
val scheduledFlow = database.transaction { getScheduledFlow(scheduledState) }
if (scheduledFlow != null) {
startingStateRefs.add(scheduledState)
flowName = scheduledFlow.javaClass.name
// TODO refactor the scheduler to store and propagate the original invocation context
val context = InvocationContext.newInstance(InvocationOrigin.Scheduled(scheduledState))
val future = flowStarter.startFlow(scheduledFlow, context).flatMap { it.resultFuture }
val deduplicationHandler = FlowStartDeduplicationHandler(scheduledState)
val future = flowStarter.startFlow(scheduledFlow, context, deduplicationHandler).flatMap { it.resultFuture }
future.then {
unfinishedSchedules.countDown()
}
@ -327,7 +351,6 @@ class NodeSchedulerService(private val clock: CordaClock,
}
else -> {
log.trace { "Scheduler starting FlowLogic $flowLogic" }
scheduledStates.remove(scheduledState.ref)
scheduledStatesQueue.remove(scheduledState)
flowLogic
}

24
node/src/main/kotlin/net/corda/node/services/messaging/Messaging.kt
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@ -163,19 +163,29 @@ object TopicStringValidator {
}
/**
* Represents a to-be-acknowledged message. It has an associated deduplication ID.
* This handler is used to implement exactly-once delivery of an event on top of a possibly duplicated one. This is done
* using two hooks that are called from the event processor, one called from the database transaction committing the
* side-effect caused by the event, and another one called after the transaction has committed successfully.
*
* For example for messaging we can use [insideDatabaseTransaction] to store the message's unique ID for later
* deduplication, and [afterDatabaseTransaction] to acknowledge the message and stop retries.
*
* We also use this for exactly-once start of a scheduled flow, [insideDatabaseTransaction] is used to remove the
* to-be-scheduled state of the flow, [afterDatabaseTransaction] is used for cleanup of in-memory bookkeeping.
*/
interface AcknowledgeHandle {
interface DeduplicationHandler {
/**
* Acknowledge the message.
* This will be run inside a database transaction that commits the side-effect of the event, allowing the
* implementor to persist the event delivery fact atomically with the side-effect.
*/
fun acknowledge()
fun insideDatabaseTransaction()
/**
* Store the deduplication ID. TODO this should be moved into the flow state machine completely.
* This will be run strictly after the side-effect has been committed successfully and may be used for
* cleanup/acknowledgement/stopping of retries.
*/
fun persistDeduplicationId()
fun afterDatabaseTransaction()
}
typealias MessageHandler = (ReceivedMessage, MessageHandlerRegistration, AcknowledgeHandle) -> Unit
typealias MessageHandler = (ReceivedMessage, MessageHandlerRegistration, DeduplicationHandler) -> Unit

30
node/src/main/kotlin/net/corda/node/services/messaging/P2PMessageDeduplicator.kt
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@ -16,6 +16,7 @@ import net.corda.node.services.statemachine.DeduplicationId
import net.corda.node.utilities.AppendOnlyPersistentMap
import net.corda.nodeapi.internal.persistence.CordaPersistence
import net.corda.nodeapi.internal.persistence.NODE_DATABASE_PREFIX
import org.apache.mina.util.ConcurrentHashSet
import java.time.Instant
import java.util.*
import java.util.concurrent.TimeUnit
@ -29,6 +30,10 @@ import javax.persistence.Id
class P2PMessageDeduplicator(private val database: CordaPersistence) {
val ourSenderUUID = UUID.randomUUID().toString()
// A temporary in-memory set of deduplication IDs. When we receive a message we don't persist the ID immediately,
// so we store the ID here in the meantime (until the persisting db tx has committed). This is because Artemis may
// redeliver messages to the same consumer if they weren't ACKed.
private val beingProcessedMessages = ConcurrentHashSet<DeduplicationId>()
private val processedMessages = createProcessedMessages()
// We add the peer to the key, so other peers cannot attempt malicious meddling with sequence numbers.
// Expire after 7 days since we last touched an entry, to avoid infinite growth.
@ -79,6 +84,9 @@ class P2PMessageDeduplicator(private val database: CordaPersistence) {
* @return true if we have seen this message before.
*/
fun isDuplicate(msg: ReceivedMessage): Boolean {
if (msg.uniqueMessageId in beingProcessedMessages) {
return true
}
val receivedSenderUUID = msg.senderUUID
val receivedSenderSeqNo = msg.senderSeqNo
// If we have received a new higher sequence number, then it cannot be a duplicate, and we don't need to check database.
@ -91,8 +99,26 @@ class P2PMessageDeduplicator(private val database: CordaPersistence) {
}
}
fun persistDeduplicationId(msg: ReceivedMessage) {
processedMessages[msg.uniqueMessageId] = Instant.now()
/**
* Called the first time we encounter [deduplicationId].
*/
fun signalMessageProcessStart(deduplicationId: DeduplicationId) {
beingProcessedMessages.add(deduplicationId)
}
/**
* Called inside a DB transaction to persist [deduplicationId].
*/
fun persistDeduplicationId(deduplicationId: DeduplicationId) {
processedMessages[deduplicationId] = Instant.now()
}
/**
* Called after the DB transaction persisting [deduplicationId] committed.
* Any subsequent redelivery will be deduplicated using the DB.
*/
fun signalMessageProcessFinish(deduplicationId: DeduplicationId) {
beingProcessedMessages.remove(deduplicationId)
}
@Entity

22
node/src/main/kotlin/net/corda/node/services/messaging/P2PMessagingClient.kt
View File

@ -431,6 +431,7 @@ class P2PMessagingClient(val config: NodeConfiguration,
artemisToCordaMessage(artemisMessage)?.let { cordaMessage ->
if (!deduplicator.isDuplicate(cordaMessage)) {
deduplicator.signalMessageProcessStart(cordaMessage.uniqueMessageId)
deliver(cordaMessage, artemisMessage)
} else {
log.trace { "Discard duplicate message ${cordaMessage.uniqueMessageId} for ${cordaMessage.topic}" }
@ -444,7 +445,7 @@ class P2PMessagingClient(val config: NodeConfiguration,
val deliverTo = handlers[msg.topic]
if (deliverTo != null) {
try {
deliverTo(msg, HandlerRegistration(msg.topic, deliverTo), acknowledgeHandleFor(artemisMessage, msg))
deliverTo(msg, HandlerRegistration(msg.topic, deliverTo), MessageDeduplicationHandler(artemisMessage, msg))
} catch (e: Exception) {
log.error("Caught exception whilst executing message handler for ${msg.topic}", e)
}
@ -453,21 +454,18 @@ class P2PMessagingClient(val config: NodeConfiguration,
}
}
private fun acknowledgeHandleFor(artemisMessage: ClientMessage, cordaMessage: ReceivedMessage): AcknowledgeHandle {
return object : AcknowledgeHandle {
override fun persistDeduplicationId() {
deduplicator.persistDeduplicationId(cordaMessage)
inner class MessageDeduplicationHandler(val artemisMessage: ClientMessage, val cordaMessage: ReceivedMessage) : DeduplicationHandler {
override fun insideDatabaseTransaction() {
deduplicator.persistDeduplicationId(cordaMessage.uniqueMessageId)
}
// ACKing a message calls back into the session which isn't thread safe, so we have to ensure it
// doesn't collide with a send here. Note that stop() could have been called whilst we were
// processing a message but if so, it'll be parked waiting for us to count down the latch, so
// the session itself is still around and we can still ack messages as a result.
override fun acknowledge() {
override fun afterDatabaseTransaction() {
deduplicator.signalMessageProcessFinish(cordaMessage.uniqueMessageId)
messagingExecutor!!.acknowledge(artemisMessage)
}
override fun toString(): String {
return "${javaClass.simpleName}(${cordaMessage.uniqueMessageId})"
}
}

10
node/src/main/kotlin/net/corda/node/services/statemachine/Action.kt
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@ -13,7 +13,7 @@ package net.corda.node.services.statemachine
import net.corda.core.crypto.SecureHash
import net.corda.core.flows.StateMachineRunId
import net.corda.core.identity.Party
import net.corda.node.services.messaging.AcknowledgeHandle
import net.corda.node.services.messaging.DeduplicationHandler
import java.time.Instant
/**
@ -55,14 +55,14 @@ sealed class Action {
data class RemoveCheckpoint(val id: StateMachineRunId) : Action()
/**
* Persist the deduplication IDs of [acknowledgeHandles].
* Persist the deduplication facts of [deduplicationHandlers].
*/
data class PersistDeduplicationIds(val acknowledgeHandles: List<AcknowledgeHandle>) : Action()
data class PersistDeduplicationFacts(val deduplicationHandlers: List<DeduplicationHandler>) : Action()
/**
* Acknowledge messages in [acknowledgeHandles].
* Acknowledge messages in [deduplicationHandlers].
*/
data class AcknowledgeMessages(val acknowledgeHandles: List<AcknowledgeHandle>) : Action()
data class AcknowledgeMessages(val deduplicationHandlers: List<DeduplicationHandler>) : Action()
/**
* Propagate [errorMessages] to [sessions].

12
node/src/main/kotlin/net/corda/node/services/statemachine/ActionExecutorImpl.kt
View File

@ -71,7 +71,7 @@ class ActionExecutorImpl(
return when (action) {
is Action.TrackTransaction -> executeTrackTransaction(fiber, action)
is Action.PersistCheckpoint -> executePersistCheckpoint(action)
is Action.PersistDeduplicationIds -> executePersistDeduplicationIds(action)
is Action.PersistDeduplicationFacts -> executePersistDeduplicationIds(action)
is Action.AcknowledgeMessages -> executeAcknowledgeMessages(action)
is Action.PropagateErrors -> executePropagateErrors(action)
is Action.ScheduleEvent -> executeScheduleEvent(fiber, action)
@ -113,16 +113,16 @@ class ActionExecutorImpl(
}
@Suspendable
private fun executePersistDeduplicationIds(action: Action.PersistDeduplicationIds) {
for (handle in action.acknowledgeHandles) {
handle.persistDeduplicationId()
private fun executePersistDeduplicationIds(action: Action.PersistDeduplicationFacts) {
for (handle in action.deduplicationHandlers) {
handle.insideDatabaseTransaction()
}
}
@Suspendable
private fun executeAcknowledgeMessages(action: Action.AcknowledgeMessages) {
action.acknowledgeHandles.forEach {
it.acknowledge()
action.deduplicationHandlers.forEach {
it.afterDatabaseTransaction()
}
}

6
node/src/main/kotlin/net/corda/node/services/statemachine/Event.kt
View File

@ -15,7 +15,7 @@ import net.corda.core.identity.Party
import net.corda.core.internal.FlowIORequest
import net.corda.core.serialization.SerializedBytes
import net.corda.core.transactions.SignedTransaction
import net.corda.node.services.messaging.AcknowledgeHandle
import net.corda.node.services.messaging.DeduplicationHandler
/**
* Transitions in the flow state machine are triggered by [Event]s that may originate from the flow itself or from
@ -33,12 +33,12 @@ sealed class Event {
/**
* Deliver a session message.
* @param sessionMessage the message itself.
* @param acknowledgeHandle the handle to acknowledge the message after checkpointing.
* @param deduplicationHandler the handle to acknowledge the message after checkpointing.
* @param sender the sender [Party].
*/
data class DeliverSessionMessage(
val sessionMessage: ExistingSessionMessage,
val acknowledgeHandle: AcknowledgeHandle,
val deduplicationHandler: DeduplicationHandler,
val sender: Party
) : Event()

10
node/src/main/kotlin/net/corda/node/services/statemachine/FlowMessaging.kt
View File

@ -19,7 +19,7 @@ import net.corda.core.serialization.serialize
import net.corda.core.utilities.contextLogger
import net.corda.core.utilities.trace
import net.corda.node.services.api.ServiceHubInternal
import net.corda.node.services.messaging.AcknowledgeHandle
import net.corda.node.services.messaging.DeduplicationHandler
import net.corda.node.services.messaging.ReceivedMessage
import net.corda.nodeapi.internal.ArtemisMessagingComponent.Companion.P2PMessagingHeaders
import java.io.NotSerializableException
@ -38,7 +38,7 @@ interface FlowMessaging {
/**
* Start the messaging using the [onMessage] message handler.
*/
fun start(onMessage: (ReceivedMessage, acknowledgeHandle: AcknowledgeHandle) -> Unit)
fun start(onMessage: (ReceivedMessage, deduplicationHandler: DeduplicationHandler) -> Unit)
}
/**
@ -52,9 +52,9 @@ class FlowMessagingImpl(val serviceHub: ServiceHubInternal): FlowMessaging {
val sessionTopic = "platform.session"
}
override fun start(onMessage: (ReceivedMessage, acknowledgeHandle: AcknowledgeHandle) -> Unit) {
serviceHub.networkService.addMessageHandler(sessionTopic) { receivedMessage, _, acknowledgeHandle ->
onMessage(receivedMessage, acknowledgeHandle)
override fun start(onMessage: (ReceivedMessage, deduplicationHandler: DeduplicationHandler) -> Unit) {
serviceHub.networkService.addMessageHandler(sessionTopic) { receivedMessage, _, deduplicationHandler ->
onMessage(receivedMessage, deduplicationHandler)
}
}

52
node/src/main/kotlin/net/corda/node/services/statemachine/MultiThreadedStateMachineManager.kt
View File

@ -37,11 +37,10 @@ import net.corda.node.internal.InitiatedFlowFactory
import net.corda.node.services.api.CheckpointStorage
import net.corda.node.services.api.ServiceHubInternal
import net.corda.node.services.config.shouldCheckCheckpoints
import net.corda.node.services.messaging.AcknowledgeHandle
import net.corda.node.services.messaging.DeduplicationHandler
import net.corda.node.services.messaging.ReceivedMessage
import net.corda.node.services.statemachine.interceptors.*
import net.corda.node.services.statemachine.transitions.StateMachine
import net.corda.node.services.statemachine.transitions.StateMachineConfiguration
import net.corda.node.utilities.AffinityExecutor
import net.corda.nodeapi.internal.persistence.CordaPersistence
import net.corda.nodeapi.internal.serialization.SerializeAsTokenContextImpl
@ -139,9 +138,9 @@ class MultiThreadedStateMachineManager(
}
serviceHub.networkMapCache.nodeReady.then {
resumeRestoredFlows(fibers)
flowMessaging.start { receivedMessage, acknowledgeHandle ->
flowMessaging.start { receivedMessage, deduplicationHandler ->
lifeCycle.requireState(State.STARTED) {
onSessionMessage(receivedMessage, acknowledgeHandle)
onSessionMessage(receivedMessage, deduplicationHandler)
}
}
}
@ -202,7 +201,8 @@ class MultiThreadedStateMachineManager(
override fun <A> startFlow(
flowLogic: FlowLogic<A>,
context: InvocationContext,
ourIdentity: Party?
ourIdentity: Party?,
deduplicationHandler: DeduplicationHandler?
): CordaFuture<FlowStateMachine<A>> {
return lifeCycle.requireState(State.STARTED) {
startFlowInternal(
@ -210,7 +210,7 @@ class MultiThreadedStateMachineManager(
flowLogic = flowLogic,
flowStart = FlowStart.Explicit,
ourIdentity = ourIdentity ?: getOurFirstIdentity(),
initialUnacknowledgedMessage = null,
deduplicationHandler = deduplicationHandler,
isStartIdempotent = false
)
}
@ -320,7 +320,7 @@ class MultiThreadedStateMachineManager(
createFlowFromCheckpoint(
id = id,
checkpoint = checkpoint,
initialUnacknowledgedMessage = null,
initialDeduplicationHandler = null,
isAnyCheckpointPersisted = true,
isStartIdempotent = false
)
@ -333,32 +333,32 @@ class MultiThreadedStateMachineManager(
}
}
private fun onSessionMessage(message: ReceivedMessage, acknowledgeHandle: AcknowledgeHandle) {
private fun onSessionMessage(message: ReceivedMessage, deduplicationHandler: DeduplicationHandler) {
val peer = message.peer
val sessionMessage = try {
message.data.deserialize<SessionMessage>()
} catch (ex: Exception) {
logger.error("Received corrupt SessionMessage data from $peer")
acknowledgeHandle.acknowledge()
deduplicationHandler.afterDatabaseTransaction()
return
}
val sender = serviceHub.networkMapCache.getPeerByLegalName(peer)
if (sender != null) {
when (sessionMessage) {
is ExistingSessionMessage -> onExistingSessionMessage(sessionMessage, acknowledgeHandle, sender)
is InitialSessionMessage -> onSessionInit(sessionMessage, message.platformVersion, acknowledgeHandle, sender)
is ExistingSessionMessage -> onExistingSessionMessage(sessionMessage, deduplicationHandler, sender)
is InitialSessionMessage -> onSessionInit(sessionMessage, message.platformVersion, deduplicationHandler, sender)
}
} else {
logger.error("Unknown peer $peer in $sessionMessage")
}
}
private fun onExistingSessionMessage(sessionMessage: ExistingSessionMessage, acknowledgeHandle: AcknowledgeHandle, sender: Party) {
private fun onExistingSessionMessage(sessionMessage: ExistingSessionMessage, deduplicationHandler: DeduplicationHandler, sender: Party) {
try {
val recipientId = sessionMessage.recipientSessionId
val flowId = sessionToFlow[recipientId]
if (flowId == null) {
acknowledgeHandle.acknowledge()
deduplicationHandler.afterDatabaseTransaction()
if (sessionMessage.payload is EndSessionMessage) {
logger.debug {
"Got ${EndSessionMessage::class.java.simpleName} for " +
@ -369,7 +369,7 @@ class MultiThreadedStateMachineManager(
}
} else {
val flow = concurrentBox.content.flows[flowId] ?: throw IllegalStateException("Cannot find fiber corresponding to ID $flowId")
flow.fiber.scheduleEvent(Event.DeliverSessionMessage(sessionMessage, acknowledgeHandle, sender))
flow.fiber.scheduleEvent(Event.DeliverSessionMessage(sessionMessage, deduplicationHandler, sender))
}
} catch (exception: Exception) {
logger.error("Exception while routing $sessionMessage", exception)
@ -377,7 +377,7 @@ class MultiThreadedStateMachineManager(
}
}
private fun onSessionInit(sessionMessage: InitialSessionMessage, senderPlatformVersion: Int, acknowledgeHandle: AcknowledgeHandle, sender: Party) {
private fun onSessionInit(sessionMessage: InitialSessionMessage, senderPlatformVersion: Int, deduplicationHandler: DeduplicationHandler, sender: Party) {
fun createErrorMessage(initiatorSessionId: SessionId, message: String): ExistingSessionMessage {
val errorId = secureRandom.nextLong()
val payload = RejectSessionMessage(message, errorId)
@ -396,7 +396,7 @@ class MultiThreadedStateMachineManager(
is InitiatedFlowFactory.Core -> senderPlatformVersion
is InitiatedFlowFactory.CorDapp -> null
}
startInitiatedFlow(flowLogic, acknowledgeHandle, senderSession, initiatedSessionId, sessionMessage, senderCoreFlowVersion, initiatedFlowInfo)
startInitiatedFlow(flowLogic, deduplicationHandler, senderSession, initiatedSessionId, sessionMessage, senderCoreFlowVersion, initiatedFlowInfo)
null
} catch (exception: Exception) {
logger.warn("Exception while creating initiated flow", exception)
@ -408,7 +408,7 @@ class MultiThreadedStateMachineManager(
if (replyError != null) {
flowMessaging.sendSessionMessage(sender, replyError, DeduplicationId.createRandom(secureRandom))
acknowledgeHandle.acknowledge()
deduplicationHandler.afterDatabaseTransaction()
}
}
@ -431,7 +431,7 @@ class MultiThreadedStateMachineManager(
private fun <A> startInitiatedFlow(
flowLogic: FlowLogic<A>,
triggeringUnacknowledgedMessage: AcknowledgeHandle,
initiatingMessageDeduplicationHandler: DeduplicationHandler,
peerSession: FlowSessionImpl,
initiatedSessionId: SessionId,
initiatingMessage: InitialSessionMessage,
@ -442,7 +442,7 @@ class MultiThreadedStateMachineManager(
val ourIdentity = getOurFirstIdentity()
startFlowInternal(
InvocationContext.peer(peerSession.counterparty.name), flowLogic, flowStart, ourIdentity,
triggeringUnacknowledgedMessage,
initiatingMessageDeduplicationHandler,
isStartIdempotent = false
)
}
@ -452,7 +452,7 @@ class MultiThreadedStateMachineManager(
flowLogic: FlowLogic<A>,
flowStart: FlowStart,
ourIdentity: Party,
initialUnacknowledgedMessage: AcknowledgeHandle?,
deduplicationHandler: DeduplicationHandler?,
isStartIdempotent: Boolean
): CordaFuture<FlowStateMachine<A>> {
val flowId = StateMachineRunId.createRandom()
@ -475,7 +475,7 @@ class MultiThreadedStateMachineManager(
val startedFuture = openFuture<Unit>()
val initialState = StateMachineState(
checkpoint = initialCheckpoint,
unacknowledgedMessages = initialUnacknowledgedMessage?.let { listOf(it) } ?: emptyList(),
pendingDeduplicationHandlers = deduplicationHandler?.let { listOf(it) } ?: emptyList(),
isFlowResumed = false,
isTransactionTracked = false,
isAnyCheckpointPersisted = false,
@ -532,7 +532,7 @@ class MultiThreadedStateMachineManager(
checkpoint: Checkpoint,
isAnyCheckpointPersisted: Boolean,
isStartIdempotent: Boolean,
initialUnacknowledgedMessage: AcknowledgeHandle?
initialDeduplicationHandler: DeduplicationHandler?
): Flow {
val flowState = checkpoint.flowState
val resultFuture = openFuture<Any?>()
@ -541,7 +541,7 @@ class MultiThreadedStateMachineManager(
val logic = flowState.frozenFlowLogic.deserialize(context = checkpointSerializationContext!!)
val state = StateMachineState(
checkpoint = checkpoint,
unacknowledgedMessages = initialUnacknowledgedMessage?.let { listOf(it) } ?: emptyList(),
pendingDeduplicationHandlers = initialDeduplicationHandler?.let { listOf(it) } ?: emptyList(),
isFlowResumed = false,
isTransactionTracked = false,
isAnyCheckpointPersisted = isAnyCheckpointPersisted,
@ -559,7 +559,7 @@ class MultiThreadedStateMachineManager(
val fiber = flowState.frozenFiber.deserialize(context = checkpointSerializationContext!!)
val state = StateMachineState(
checkpoint = checkpoint,
unacknowledgedMessages = initialUnacknowledgedMessage?.let { listOf(it) } ?: emptyList(),
pendingDeduplicationHandlers = initialDeduplicationHandler?.let { listOf(it) } ?: emptyList(),
isFlowResumed = false,
isTransactionTracked = false,
isAnyCheckpointPersisted = isAnyCheckpointPersisted,
@ -644,7 +644,7 @@ class MultiThreadedStateMachineManager(
totalSuccessFlows.inc()
drainFlowEventQueue(flow)
// final sanity checks
require(lastState.unacknowledgedMessages.isEmpty())
require(lastState.pendingDeduplicationHandlers.isEmpty())
require(lastState.isRemoved)
require(lastState.checkpoint.subFlowStack.size == 1)
sessionToFlow.none { it.value == flow.fiber.id }
@ -676,7 +676,7 @@ class MultiThreadedStateMachineManager(
is Event.DoRemainingWork -> {}
is Event.DeliverSessionMessage -> {
// Acknowledge the message so it doesn't leak in the broker.
event.acknowledgeHandle.acknowledge()
event.deduplicationHandler.afterDatabaseTransaction()
when (event.sessionMessage.payload) {
EndSessionMessage -> {
logger.debug { "Unhandled message ${event.sessionMessage} by ${flow.fiber} due to flow shutting down" }

52
node/src/main/kotlin/net/corda/node/services/statemachine/SingleThreadedStateMachineManager.kt
View File

@ -40,11 +40,10 @@ import net.corda.node.internal.InitiatedFlowFactory
import net.corda.node.services.api.CheckpointStorage
import net.corda.node.services.api.ServiceHubInternal
import net.corda.node.services.config.shouldCheckCheckpoints
import net.corda.node.services.messaging.AcknowledgeHandle
import net.corda.node.services.messaging.DeduplicationHandler
import net.corda.node.services.messaging.ReceivedMessage
import net.corda.node.services.statemachine.interceptors.*
import net.corda.node.services.statemachine.transitions.StateMachine
import net.corda.node.services.statemachine.transitions.StateMachineConfiguration
import net.corda.node.utilities.AffinityExecutor
import net.corda.nodeapi.internal.persistence.CordaPersistence
import net.corda.nodeapi.internal.serialization.SerializeAsTokenContextImpl
@ -136,9 +135,9 @@ class SingleThreadedStateMachineManager(
}
serviceHub.networkMapCache.nodeReady.then {
resumeRestoredFlows(fibers)
flowMessaging.start { receivedMessage, acknowledgeHandle ->
flowMessaging.start { receivedMessage, deduplicationHandler ->
executor.execute {
onSessionMessage(receivedMessage, acknowledgeHandle)
onSessionMessage(receivedMessage, deduplicationHandler)
}
}
}
@ -203,14 +202,15 @@ class SingleThreadedStateMachineManager(
override fun <A> startFlow(
flowLogic: FlowLogic<A>,
context: InvocationContext,
ourIdentity: Party?
ourIdentity: Party?,
deduplicationHandler: DeduplicationHandler?
): CordaFuture<FlowStateMachine<A>> {
return startFlowInternal(
invocationContext = context,
flowLogic = flowLogic,
flowStart = FlowStart.Explicit,
ourIdentity = ourIdentity ?: getOurFirstIdentity(),
initialUnacknowledgedMessage = null,
deduplicationHandler = deduplicationHandler,
isStartIdempotent = false
)
}
@ -320,7 +320,7 @@ class SingleThreadedStateMachineManager(
createFlowFromCheckpoint(
id = id,
checkpoint = checkpoint,
initialUnacknowledgedMessage = null,
initialDeduplicationHandler = null,
isAnyCheckpointPersisted = true,
isStartIdempotent = false
)
@ -333,32 +333,32 @@ class SingleThreadedStateMachineManager(
}
}
private fun onSessionMessage(message: ReceivedMessage, acknowledgeHandle: AcknowledgeHandle) {
private fun onSessionMessage(message: ReceivedMessage, deduplicationHandler: DeduplicationHandler) {
val peer = message.peer
val sessionMessage = try {
message.data.deserialize<SessionMessage>()
} catch (ex: Exception) {
logger.error("Received corrupt SessionMessage data from $peer")
acknowledgeHandle.acknowledge()
deduplicationHandler.afterDatabaseTransaction()
return
}
val sender = serviceHub.networkMapCache.getPeerByLegalName(peer)
if (sender != null) {
when (sessionMessage) {
is ExistingSessionMessage -> onExistingSessionMessage(sessionMessage, acknowledgeHandle, sender)
is InitialSessionMessage -> onSessionInit(sessionMessage, message.platformVersion, acknowledgeHandle, sender)
is ExistingSessionMessage -> onExistingSessionMessage(sessionMessage, deduplicationHandler, sender)
is InitialSessionMessage -> onSessionInit(sessionMessage, message.platformVersion, deduplicationHandler, sender)
}
} else {
logger.error("Unknown peer $peer in $sessionMessage")
}
}
private fun onExistingSessionMessage(sessionMessage: ExistingSessionMessage, acknowledgeHandle: AcknowledgeHandle, sender: Party) {
private fun onExistingSessionMessage(sessionMessage: ExistingSessionMessage, deduplicationHandler: DeduplicationHandler, sender: Party) {
try {
val recipientId = sessionMessage.recipientSessionId
val flowId = sessionToFlow[recipientId]
if (flowId == null) {
acknowledgeHandle.acknowledge()
deduplicationHandler.afterDatabaseTransaction()
if (sessionMessage.payload is EndSessionMessage) {
logger.debug {
"Got ${EndSessionMessage::class.java.simpleName} for " +
@ -369,7 +369,7 @@ class SingleThreadedStateMachineManager(
}
} else {
val flow = mutex.locked { flows[flowId] } ?: throw IllegalStateException("Cannot find fiber corresponding to ID $flowId")
flow.fiber.scheduleEvent(Event.DeliverSessionMessage(sessionMessage, acknowledgeHandle, sender))
flow.fiber.scheduleEvent(Event.DeliverSessionMessage(sessionMessage, deduplicationHandler, sender))
}
} catch (exception: Exception) {
logger.error("Exception while routing $sessionMessage", exception)
@ -377,7 +377,7 @@ class SingleThreadedStateMachineManager(
}
}
private fun onSessionInit(sessionMessage: InitialSessionMessage, senderPlatformVersion: Int, acknowledgeHandle: AcknowledgeHandle, sender: Party) {
private fun onSessionInit(sessionMessage: InitialSessionMessage, senderPlatformVersion: Int, deduplicationHandler: DeduplicationHandler, sender: Party) {
fun createErrorMessage(initiatorSessionId: SessionId, message: String): ExistingSessionMessage {
val errorId = secureRandom.nextLong()
val payload = RejectSessionMessage(message, errorId)
@ -396,7 +396,7 @@ class SingleThreadedStateMachineManager(
is InitiatedFlowFactory.Core -> senderPlatformVersion
is InitiatedFlowFactory.CorDapp -> null
}
startInitiatedFlow(flowLogic, acknowledgeHandle, senderSession, initiatedSessionId, sessionMessage, senderCoreFlowVersion, initiatedFlowInfo)
startInitiatedFlow(flowLogic, deduplicationHandler, senderSession, initiatedSessionId, sessionMessage, senderCoreFlowVersion, initiatedFlowInfo)
null
} catch (exception: Exception) {
logger.warn("Exception while creating initiated flow", exception)
@ -408,7 +408,7 @@ class SingleThreadedStateMachineManager(
if (replyError != null) {
flowMessaging.sendSessionMessage(sender, replyError, DeduplicationId.createRandom(secureRandom))
acknowledgeHandle.acknowledge()
deduplicationHandler.afterDatabaseTransaction()
}
}
@ -431,7 +431,7 @@ class SingleThreadedStateMachineManager(
private fun <A> startInitiatedFlow(
flowLogic: FlowLogic<A>,
triggeringUnacknowledgedMessage: AcknowledgeHandle,
initiatingMessageDeduplicationHandler: DeduplicationHandler,
peerSession: FlowSessionImpl,
initiatedSessionId: SessionId,
initiatingMessage: InitialSessionMessage,
@ -442,7 +442,7 @@ class SingleThreadedStateMachineManager(
val ourIdentity = getOurFirstIdentity()
startFlowInternal(
InvocationContext.peer(peerSession.counterparty.name), flowLogic, flowStart, ourIdentity,
triggeringUnacknowledgedMessage,
initiatingMessageDeduplicationHandler,
isStartIdempotent = false
)
}
@ -452,7 +452,7 @@ class SingleThreadedStateMachineManager(
flowLogic: FlowLogic<A>,
flowStart: FlowStart,
ourIdentity: Party,
initialUnacknowledgedMessage: AcknowledgeHandle?,
deduplicationHandler: DeduplicationHandler?,
isStartIdempotent: Boolean
): CordaFuture<FlowStateMachine<A>> {
val flowId = StateMachineRunId.createRandom()
@ -475,7 +475,7 @@ class SingleThreadedStateMachineManager(
val startedFuture = openFuture<Unit>()
val initialState = StateMachineState(
checkpoint = initialCheckpoint,
unacknowledgedMessages = initialUnacknowledgedMessage?.let { listOf(it) } ?: emptyList(),
pendingDeduplicationHandlers = deduplicationHandler?.let { listOf(it) } ?: emptyList(),
isFlowResumed = false,
isTransactionTracked = false,
isAnyCheckpointPersisted = false,
@ -532,7 +532,7 @@ class SingleThreadedStateMachineManager(
checkpoint: Checkpoint,
isAnyCheckpointPersisted: Boolean,
isStartIdempotent: Boolean,
initialUnacknowledgedMessage: AcknowledgeHandle?
initialDeduplicationHandler: DeduplicationHandler?
): Flow {
val flowState = checkpoint.flowState
val resultFuture = openFuture<Any?>()
@ -541,7 +541,7 @@ class SingleThreadedStateMachineManager(
val logic = flowState.frozenFlowLogic.deserialize(context = checkpointSerializationContext!!)
val state = StateMachineState(
checkpoint = checkpoint,
unacknowledgedMessages = initialUnacknowledgedMessage?.let { listOf(it) } ?: emptyList(),
pendingDeduplicationHandlers = initialDeduplicationHandler?.let { listOf(it) } ?: emptyList(),
isFlowResumed = false,
isTransactionTracked = false,
isAnyCheckpointPersisted = isAnyCheckpointPersisted,
@ -559,7 +559,7 @@ class SingleThreadedStateMachineManager(
val fiber = flowState.frozenFiber.deserialize(context = checkpointSerializationContext!!)
val state = StateMachineState(
checkpoint = checkpoint,
unacknowledgedMessages = initialUnacknowledgedMessage?.let { listOf(it) } ?: emptyList(),
pendingDeduplicationHandlers = initialDeduplicationHandler?.let { listOf(it) } ?: emptyList(),
isFlowResumed = false,
isTransactionTracked = false,
isAnyCheckpointPersisted = isAnyCheckpointPersisted,
@ -648,7 +648,7 @@ class SingleThreadedStateMachineManager(
) {
drainFlowEventQueue(flow)
// final sanity checks
require(lastState.unacknowledgedMessages.isEmpty())
require(lastState.pendingDeduplicationHandlers.isEmpty())
require(lastState.isRemoved)
require(lastState.checkpoint.subFlowStack.size == 1)
sessionToFlow.none { it.value == flow.fiber.id }
@ -679,7 +679,7 @@ class SingleThreadedStateMachineManager(
is Event.DoRemainingWork -> {}
is Event.DeliverSessionMessage -> {
// Acknowledge the message so it doesn't leak in the broker.
event.acknowledgeHandle.acknowledge()
event.deduplicationHandler.afterDatabaseTransaction()
when (event.sessionMessage.payload) {
EndSessionMessage -> {
logger.debug { "Unhandled message ${event.sessionMessage} due to flow shutting down" }

6
node/src/main/kotlin/net/corda/node/services/statemachine/StateMachineManager.kt
View File

@ -18,6 +18,7 @@ import net.corda.core.identity.Party
import net.corda.core.internal.FlowStateMachine
import net.corda.core.messaging.DataFeed
import net.corda.core.utilities.Try
import net.corda.node.services.messaging.DeduplicationHandler
import rx.Observable
/**
@ -58,11 +59,14 @@ interface StateMachineManager {
*
* @param flowLogic The flow's code.
* @param context The context of the flow.
* @param ourIdentity The identity to use for the flow.
* @param deduplicationHandler Allows exactly-once start of the flow, see [DeduplicationHandler].
*/
fun <A> startFlow(
flowLogic: FlowLogic<A>,
context: InvocationContext,
ourIdentity: Party? = null
ourIdentity: Party?,
deduplicationHandler: DeduplicationHandler?
): CordaFuture<FlowStateMachine<A>>
/**

6
node/src/main/kotlin/net/corda/node/services/statemachine/StateMachineState.kt
View File

@ -17,7 +17,7 @@ import net.corda.core.identity.Party
import net.corda.core.internal.FlowIORequest
import net.corda.core.serialization.SerializedBytes
import net.corda.core.utilities.Try
import net.corda.node.services.messaging.AcknowledgeHandle
import net.corda.node.services.messaging.DeduplicationHandler
/**
* The state of the state machine, capturing the state of a flow. It consists of two parts, an *immutable* part that is
@ -25,7 +25,7 @@ import net.corda.node.services.messaging.AcknowledgeHandle
*
* @param checkpoint the persisted part of the state.
* @param flowLogic the [FlowLogic] associated with the flow. Note that this is mutable by the user.
* @param unacknowledgedMessages the list of currently unacknowledged messages.
* @param pendingDeduplicationHandlers the list of incomplete deduplication handlers.
* @param isFlowResumed true if the control is returned (or being returned) to "user-space" flow code. This is used
* to make [Event.DoRemainingWork] idempotent.
* @param isTransactionTracked true if a ledger transaction has been tracked as part of a
@ -42,7 +42,7 @@ import net.corda.node.services.messaging.AcknowledgeHandle
data class StateMachineState(
val checkpoint: Checkpoint,
val flowLogic: FlowLogic<*>,
val unacknowledgedMessages: List<AcknowledgeHandle>,
val pendingDeduplicationHandlers: List<DeduplicationHandler>,
val isFlowResumed: Boolean,
val isTransactionTracked: Boolean,
val isAnyCheckpointPersisted: Boolean,

10
node/src/main/kotlin/net/corda/node/services/statemachine/transitions/DeliverSessionMessageTransition.kt
View File

@ -34,12 +34,12 @@ class DeliverSessionMessageTransition(
) : Transition {
override fun transition(): TransitionResult {
return builder {
// Add the AcknowledgeHandle to the unacknowledged messages ASAP so in case an error happens we still know
// Add the DeduplicationHandler to the pending ones ASAP so in case an error happens we still know
// about the message. Note that in case of an error during deliver this message *will be acked*.
// For example if the session corresponding to the message is not found the message is still acked to free
// up the broker but the flow will error.
currentState = currentState.copy(
unacknowledgedMessages = currentState.unacknowledgedMessages + event.acknowledgeHandle
pendingDeduplicationHandlers = currentState.pendingDeduplicationHandlers + event.deduplicationHandler
)
// Check whether we have a session corresponding to the message.
val existingSession = startingState.checkpoint.sessions[event.sessionMessage.recipientSessionId]
@ -163,12 +163,12 @@ class DeliverSessionMessageTransition(
actions.addAll(arrayOf(
Action.CreateTransaction,
Action.PersistCheckpoint(context.id, currentState.checkpoint),
Action.PersistDeduplicationIds(currentState.unacknowledgedMessages),
Action.PersistDeduplicationFacts(currentState.pendingDeduplicationHandlers),
Action.CommitTransaction,
Action.AcknowledgeMessages(currentState.unacknowledgedMessages)
Action.AcknowledgeMessages(currentState.pendingDeduplicationHandlers)
))
currentState = currentState.copy(
unacknowledgedMessages = emptyList(),
pendingDeduplicationHandlers = emptyList(),
isAnyCheckpointPersisted = true
)
}

6
node/src/main/kotlin/net/corda/node/services/statemachine/transitions/ErrorFlowTransition.kt
View File

@ -71,14 +71,14 @@ class ErrorFlowTransition(
actions.add(Action.RemoveCheckpoint(context.id))
}
actions.addAll(arrayOf(
Action.PersistDeduplicationIds(currentState.unacknowledgedMessages),
Action.PersistDeduplicationFacts(currentState.pendingDeduplicationHandlers),
Action.CommitTransaction,
Action.AcknowledgeMessages(currentState.unacknowledgedMessages),
Action.AcknowledgeMessages(currentState.pendingDeduplicationHandlers),
Action.RemoveSessionBindings(currentState.checkpoint.sessions.keys)
))
currentState = currentState.copy(
unacknowledgedMessages = emptyList(),
pendingDeduplicationHandlers = emptyList(),
isRemoved = true
)

14
node/src/main/kotlin/net/corda/node/services/statemachine/transitions/TopLevelTransition.kt
View File

@ -151,14 +151,14 @@ class TopLevelTransition(
} else {
actions.addAll(arrayOf(
Action.PersistCheckpoint(context.id, newCheckpoint),
Action.PersistDeduplicationIds(currentState.unacknowledgedMessages),
Action.PersistDeduplicationFacts(currentState.pendingDeduplicationHandlers),
Action.CommitTransaction,
Action.AcknowledgeMessages(currentState.unacknowledgedMessages),
Action.AcknowledgeMessages(currentState.pendingDeduplicationHandlers),
Action.ScheduleEvent(Event.DoRemainingWork)
))
currentState = currentState.copy(
checkpoint = newCheckpoint,
unacknowledgedMessages = emptyList(),
pendingDeduplicationHandlers = emptyList(),
isFlowResumed = false,
isAnyCheckpointPersisted = true
)
@ -172,12 +172,12 @@ class TopLevelTransition(
val checkpoint = currentState.checkpoint
when (checkpoint.errorState) {
ErrorState.Clean -> {
val unacknowledgedMessages = currentState.unacknowledgedMessages
val pendingDeduplicationHandlers = currentState.pendingDeduplicationHandlers
currentState = currentState.copy(
checkpoint = checkpoint.copy(
numberOfSuspends = checkpoint.numberOfSuspends + 1
),
unacknowledgedMessages = emptyList(),
pendingDeduplicationHandlers = emptyList(),
isFlowResumed = false,
isRemoved = true
)
@ -186,9 +186,9 @@ class TopLevelTransition(
actions.add(Action.RemoveCheckpoint(context.id))
}
actions.addAll(arrayOf(
Action.PersistDeduplicationIds(unacknowledgedMessages),
Action.PersistDeduplicationFacts(pendingDeduplicationHandlers),
Action.CommitTransaction,
Action.AcknowledgeMessages(unacknowledgedMessages),
Action.AcknowledgeMessages(pendingDeduplicationHandlers),
Action.RemoveSessionBindings(allSourceSessionIds),
Action.RemoveFlow(context.id, FlowRemovalReason.OrderlyFinish(event.returnValue), currentState)
))

6
node/src/main/kotlin/net/corda/node/services/statemachine/transitions/UnstartedFlowTransition.kt
View File

@ -78,12 +78,12 @@ class UnstartedFlowTransition(
actions.addAll(arrayOf(
Action.CreateTransaction,
Action.PersistCheckpoint(context.id, currentState.checkpoint),
Action.PersistDeduplicationIds(currentState.unacknowledgedMessages),
Action.PersistDeduplicationFacts(currentState.pendingDeduplicationHandlers),
Action.CommitTransaction,
Action.AcknowledgeMessages(currentState.unacknowledgedMessages)
Action.AcknowledgeMessages(currentState.pendingDeduplicationHandlers)
))
currentState = currentState.copy(
unacknowledgedMessages = emptyList(),
pendingDeduplicationHandlers = emptyList(),
isAnyCheckpointPersisted = true
)
}

2
node/src/main/resources/reference.conf
View File

@ -4,7 +4,7 @@ keyStorePassword = "cordacadevpass"
trustStorePassword = "trustpass"
dataSourceProperties = {
dataSourceClassName = org.h2.jdbcx.JdbcDataSource
dataSource.url = "jdbc:h2:file:"${baseDirectory}"/persistence;DB_CLOSE_ON_EXIT=FALSE;LOCK_TIMEOUT=10000;WRITE_DELAY=100;AUTO_SERVER_PORT="${h2port}
dataSource.url = "jdbc:h2:file:"${baseDirectory}"/persistence;DB_CLOSE_ON_EXIT=FALSE;LOCK_TIMEOUT=10000;WRITE_DELAY=0;AUTO_SERVER_PORT="${h2port}
dataSource.user = sa
dataSource.password = ""
}

4
node/src/test/kotlin/net/corda/node/services/events/NodeSchedulerServiceTest.kt
View File

@ -48,7 +48,7 @@ class NodeSchedulerServiceTest {
}.whenever(it).transaction(any())
}
private val flowStarter = rigorousMock<FlowStarter>().also {
doReturn(openFuture<FlowStateMachine<*>>()).whenever(it).startFlow(any<FlowLogic<*>>(), any())
doReturn(openFuture<FlowStateMachine<*>>()).whenever(it).startFlow(any<FlowLogic<*>>(), any(), any())
}
private val flowsDraingMode = rigorousMock<NodePropertiesStore.FlowsDrainingModeOperations>().also {
doReturn(false).whenever(it).isEnabled()
@ -111,7 +111,7 @@ class NodeSchedulerServiceTest {
private fun assertStarted(event: Event) {
// Like in assertWaitingFor, use timeout to make verify wait as we often race the call to startFlow:
verify(flowStarter, timeout(5000)).startFlow(same(event.flowLogic)!!, any())
verify(flowStarter, timeout(5000)).startFlow(same(event.flowLogic)!!, any(), any())
}
@Test

12
node/src/test/kotlin/net/corda/node/services/messaging/ArtemisMessagingTest.kt
View File

@ -217,8 +217,8 @@ class ArtemisMessagingTest {
try {
val messagingClient2 = createMessagingClient()
messagingClient2.addMessageHandler(TOPIC) { msg, _, handle ->
database.transaction { handle.persistDeduplicationId() }
handle.acknowledge() // We ACK first so that if it fails we won't get a duplicate in [receivedMessages]
database.transaction { handle.insideDatabaseTransaction() }
handle.afterDatabaseTransaction() // We ACK first so that if it fails we won't get a duplicate in [receivedMessages]
receivedMessages.add(msg)
}
startNodeMessagingClient()
@ -252,8 +252,8 @@ class ArtemisMessagingTest {
val messagingClient3 = createMessagingClient()
messagingClient3.addMessageHandler(TOPIC) { msg, _, handle ->
database.transaction { handle.persistDeduplicationId() }
handle.acknowledge() // We ACK first so that if it fails we won't get a duplicate in [receivedMessages]
database.transaction { handle.insideDatabaseTransaction() }
handle.afterDatabaseTransaction() // We ACK first so that if it fails we won't get a duplicate in [receivedMessages]
receivedMessages.add(msg)
}
startNodeMessagingClient()
@ -281,8 +281,8 @@ class ArtemisMessagingTest {
val messagingClient = createMessagingClient(platformVersion = platformVersion)
messagingClient.addMessageHandler(TOPIC) { message, _, handle ->
database.transaction { handle.persistDeduplicationId() }
handle.acknowledge() // We ACK first so that if it fails we won't get a duplicate in [receivedMessages]
database.transaction { handle.insideDatabaseTransaction() }
handle.afterDatabaseTransaction() // We ACK first so that if it fails we won't get a duplicate in [receivedMessages]
receivedMessages.add(message)
}
startNodeMessagingClient()

15
testing/node-driver/src/main/kotlin/net/corda/testing/node/InMemoryMessagingNetwork.kt
View File

@ -480,13 +480,7 @@ class InMemoryMessagingNetwork private constructor(
database.transaction {
for (handler in deliverTo) {
try {
val acknowledgeHandle = object : AcknowledgeHandle {
override fun acknowledge() {
}
override fun persistDeduplicationId() {
}
}
handler.callback(transfer.toReceivedMessage(), handler, acknowledgeHandle)
handler.callback(transfer.toReceivedMessage(), handler, DummyDeduplicationHandler())
} catch (e: Exception) {
log.error("Caught exception in handler for $this/${handler.topicSession}", e)
}
@ -510,5 +504,12 @@ class InMemoryMessagingNetwork private constructor(
message.debugTimestamp,
sender.name)
}
private class DummyDeduplicationHandler : DeduplicationHandler {
override fun afterDatabaseTransaction() {
}
override fun insideDatabaseTransaction() {
}
}
}